diff --git a/.golangci.yml b/.golangci.yml
index 95ad5f308a..b0e652bb6f 100644
--- a/.golangci.yml
+++ b/.golangci.yml
@@ -70,7 +70,7 @@ issues:
- path: modules/log/
linters:
- errcheck
- - path: routers/routes/routes.go
+ - path: routers/routes/macaron.go
linters:
- dupl
- path: routers/api/v1/repo/issue_subscription.go
diff --git a/cmd/web.go b/cmd/web.go
index 036f1a6d66..7dcaee306c 100644
--- a/cmd/web.go
+++ b/cmd/web.go
@@ -19,8 +19,6 @@ import (
"code.gitea.io/gitea/routers"
"code.gitea.io/gitea/routers/routes"
- "gitea.com/macaron/macaron"
-
context2 "github.com/gorilla/context"
"github.com/unknwon/com"
"github.com/urfave/cli"
@@ -135,9 +133,9 @@ func runWeb(ctx *cli.Context) error {
return err
}
}
- m := routes.NewMacaron()
- routes.RegisterInstallRoute(m)
- err := listen(m, false)
+ c := routes.NewChi()
+ routes.RegisterInstallRoute(c)
+ err := listen(c, false)
select {
case <-graceful.GetManager().IsShutdown():
<-graceful.GetManager().Done()
@@ -168,10 +166,10 @@ func runWeb(ctx *cli.Context) error {
}
}
// Set up Macaron
- m := routes.NewMacaron()
- routes.RegisterRoutes(m)
+ c := routes.NewChi()
+ routes.RegisterRoutes(c)
- err := listen(m, true)
+ err := listen(c, true)
<-graceful.GetManager().Done()
log.Info("PID: %d Gitea Web Finished", os.Getpid())
log.Close()
@@ -212,7 +210,7 @@ func setPort(port string) error {
return nil
}
-func listen(m *macaron.Macaron, handleRedirector bool) error {
+func listen(m http.Handler, handleRedirector bool) error {
listenAddr := setting.HTTPAddr
if setting.Protocol != setting.UnixSocket && setting.Protocol != setting.FCGIUnix {
listenAddr = net.JoinHostPort(listenAddr, setting.HTTPPort)
diff --git a/contrib/pr/checkout.go b/contrib/pr/checkout.go
index 8fe1aa4206..7a56b61fe3 100644
--- a/contrib/pr/checkout.go
+++ b/contrib/pr/checkout.go
@@ -117,8 +117,8 @@ func runPR() {
//routers.GlobalInit()
external.RegisterParsers()
markup.Init()
- m := routes.NewMacaron()
- routes.RegisterRoutes(m)
+ c := routes.NewChi()
+ routes.RegisterRoutes(c)
log.Printf("[PR] Ready for testing !\n")
log.Printf("[PR] Login with user1, user2, user3, ... with pass: password\n")
@@ -138,7 +138,7 @@ func runPR() {
*/
//Start the server
- http.ListenAndServe(":8080", context2.ClearHandler(m))
+ http.ListenAndServe(":8080", context2.ClearHandler(c))
log.Printf("[PR] Cleaning up ...\n")
/*
diff --git a/go.mod b/go.mod
index d7e8edc105..e9a264fdfd 100644
--- a/go.mod
+++ b/go.mod
@@ -39,6 +39,7 @@ require (
github.com/facebookgo/subset v0.0.0-20150612182917-8dac2c3c4870 // indirect
github.com/gliderlabs/ssh v0.3.1
github.com/glycerine/go-unsnap-stream v0.0.0-20190901134440-81cf024a9e0a // indirect
+ github.com/go-chi/chi v1.5.0
github.com/go-enry/go-enry/v2 v2.5.2
github.com/go-git/go-billy/v5 v5.0.0
github.com/go-git/go-git/v5 v5.2.0
diff --git a/go.sum b/go.sum
index 7710cbc63f..c169da1c76 100644
--- a/go.sum
+++ b/go.sum
@@ -288,6 +288,7 @@ github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymF
github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1mIlRU8Am5FuJP05cCM98=
github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
+github.com/ethantkoenig/rupture v0.0.0-20181029165146-c3b3b810dc77 h1:ZLWiTTzTUBb0WEXUxobYI/RxULIzOoIP7pgfDd4p1cw=
github.com/ethantkoenig/rupture v0.0.0-20181029165146-c3b3b810dc77/go.mod h1:MkKY/CB98aVE4VxO63X5vTQKUgcn+3XP15LMASe3lYs=
github.com/facebookgo/ensure v0.0.0-20160127193407-b4ab57deab51 h1:0JZ+dUmQeA8IIVUMzysrX4/AKuQwWhV2dYQuPZdvdSQ=
github.com/facebookgo/ensure v0.0.0-20160127193407-b4ab57deab51/go.mod h1:Yg+htXGokKKdzcwhuNDwVvN+uBxDGXJ7G/VN1d8fa64=
@@ -323,6 +324,8 @@ github.com/glycerine/goconvey v0.0.0-20190410193231-58a59202ab31 h1:gclg6gY70GLy
github.com/glycerine/goconvey v0.0.0-20190410193231-58a59202ab31/go.mod h1:Ogl1Tioa0aV7gstGFO7KhffUsb9M4ydbEbbxpcEDc24=
github.com/go-asn1-ber/asn1-ber v1.5.1 h1:pDbRAunXzIUXfx4CB2QJFv5IuPiuoW+sWvr/Us009o8=
github.com/go-asn1-ber/asn1-ber v1.5.1/go.mod h1:hEBeB/ic+5LoWskz+yKT7vGhhPYkProFKoKdwZRWMe0=
+github.com/go-chi/chi v1.5.0 h1:2ZcJZozJ+rj6BA0c19ffBUGXEKAT/aOLOtQjD46vBRA=
+github.com/go-chi/chi v1.5.0/go.mod h1:REp24E+25iKvxgeTfHmdUoL5x15kBiDBlnIl5bCwe2k=
github.com/go-enry/go-enry/v2 v2.5.2 h1:3f3PFAO6JitWkPi1GQ5/m6Xu4gNL1U5soJ8QaYqJ0YQ=
github.com/go-enry/go-enry/v2 v2.5.2/go.mod h1:GVzIiAytiS5uT/QiuakK7TF1u4xDab87Y8V5EJRpsIQ=
github.com/go-enry/go-oniguruma v1.2.1 h1:k8aAMuJfMrqm/56SG2lV9Cfti6tC4x8673aHCcBk+eo=
@@ -655,6 +658,7 @@ github.com/jackc/puddle v0.0.0-20190413234325-e4ced69a3a2b/go.mod h1:m4B5Dj62Y0f
github.com/jackc/puddle v0.0.0-20190608224051-11cab39313c9/go.mod h1:m4B5Dj62Y0fbyuIc15OsIqK0+JU8nkqQjsgx7dvjSWk=
github.com/jackc/puddle v1.1.0/go.mod h1:m4B5Dj62Y0fbyuIc15OsIqK0+JU8nkqQjsgx7dvjSWk=
github.com/jarcoal/httpmock v0.0.0-20180424175123-9c70cfe4a1da/go.mod h1:ks+b9deReOc7jgqp+e7LuFiCBH6Rm5hL32cLcEAArb4=
+github.com/jaytaylor/html2text v0.0.0-20200412013138-3577fbdbcff7 h1:g0fAGBisHaEQ0TRq1iBvemFRf+8AEWEmBESSiWB3Vsc=
github.com/jaytaylor/html2text v0.0.0-20200412013138-3577fbdbcff7/go.mod h1:CVKlgaMiht+LXvHG173ujK6JUhZXKb2u/BQtjPDIvyk=
github.com/jbenet/go-context v0.0.0-20150711004518-d14ea06fba99 h1:BQSFePA1RWJOlocH6Fxy8MmwDt+yVQYULKfN0RoTN8A=
github.com/jbenet/go-context v0.0.0-20150711004518-d14ea06fba99/go.mod h1:1lJo3i6rXxKeerYnT8Nvf0QmHCRC1n8sfWVwXF2Frvo=
@@ -684,6 +688,7 @@ github.com/julienschmidt/httprouter v1.2.0/go.mod h1:SYymIcj16QtmaHHD7aYtjjsJG7V
github.com/julienschmidt/httprouter v1.3.0/go.mod h1:JR6WtHb+2LUe8TCKY3cZOxFyyO8IZAc4RVcycCCAKdM=
github.com/karrick/godirwalk v1.8.0/go.mod h1:H5KPZjojv4lE+QYImBI8xVtrBRgYrIVsaRPx4tDPEn4=
github.com/karrick/godirwalk v1.10.3/go.mod h1:RoGL9dQei4vP9ilrpETWE8CLOZ1kiN0LhBygSwrAsHA=
+github.com/kballard/go-shellquote v0.0.0-20180428030007-95032a82bc51 h1:Z9n2FFNUXsshfwJMBgNA0RU6/i7WVaAegv3PtuIHPMs=
github.com/kballard/go-shellquote v0.0.0-20180428030007-95032a82bc51/go.mod h1:CzGEWj7cYgsdH8dAjBGEr58BoE7ScuLd+fwFZ44+/x8=
github.com/kevinburke/ssh_config v0.0.0-20190725054713-01f96b0aa0cd h1:Coekwdh0v2wtGp9Gmz1Ze3eVRAWJMLokvN3QjdzCHLY=
github.com/kevinburke/ssh_config v0.0.0-20190725054713-01f96b0aa0cd/go.mod h1:CT57kijsi8u/K/BOFA39wgDQJ9CxiF4nAY/ojJ6r6mM=
@@ -1025,6 +1030,7 @@ github.com/spf13/viper v1.7.0 h1:xVKxvI7ouOI5I+U9s2eeiUfMaWBVoXA3AWskkrqK0VM=
github.com/spf13/viper v1.7.0/go.mod h1:8WkrPz2fc9jxqZNCJI/76HCieCp4Q8HaLFoCha5qpdg=
github.com/spf13/viper v1.7.1 h1:pM5oEahlgWv/WnHXpgbKz7iLIxRf65tye2Ci+XFK5sk=
github.com/spf13/viper v1.7.1/go.mod h1:8WkrPz2fc9jxqZNCJI/76HCieCp4Q8HaLFoCha5qpdg=
+github.com/ssor/bom v0.0.0-20170718123548-6386211fdfcf h1:pvbZ0lM0XWPBqUKqFU8cmavspvIl9nulOYwdy6IFRRo=
github.com/ssor/bom v0.0.0-20170718123548-6386211fdfcf/go.mod h1:RJID2RhlZKId02nZ62WenDCkgHFerpIOmW0iT7GKmXM=
github.com/steveyen/gtreap v0.1.0 h1:CjhzTa274PyJLJuMZwIzCO1PfC00oRa8d1Kc78bFXJM=
github.com/steveyen/gtreap v0.1.0/go.mod h1:kl/5J7XbrOmlIbYIXdRHDDE5QxHqpk0cmkT7Z4dM9/Y=
@@ -1069,6 +1075,7 @@ github.com/unknwon/com v1.0.1/go.mod h1:tOOxU81rwgoCLoOVVPHb6T/wt8HZygqH5id+GNnl
github.com/unknwon/i18n v0.0.0-20190805065654-5c6446a380b6/go.mod h1:+5rDk6sDGpl3azws3O+f+GpFSyN9GVr0K8cvQLQM2ZQ=
github.com/unknwon/i18n v0.0.0-20200823051745-09abd91c7f2c h1:679/gJXwrsHC3RATr0YYjZvDMJPYN7W9FGSGNoLmKxM=
github.com/unknwon/i18n v0.0.0-20200823051745-09abd91c7f2c/go.mod h1:+5rDk6sDGpl3azws3O+f+GpFSyN9GVr0K8cvQLQM2ZQ=
+github.com/unknwon/paginater v0.0.0-20200328080006-042474bd0eae h1:ihaXiJkaca54IaCSnEXtE/uSZOmPxKZhDfVLrzZLFDs=
github.com/unknwon/paginater v0.0.0-20200328080006-042474bd0eae/go.mod h1:1fdkY6xxl6ExVs2QFv7R0F5IRZHKA8RahhB9fMC9RvM=
github.com/urfave/cli v1.20.0/go.mod h1:70zkFmudgCuE/ngEzBv17Jvp/497gISqfk5gWijbERA=
github.com/urfave/cli v1.22.1/go.mod h1:Gos4lmkARVdJ6EkW0WaNv/tZAAMe9V7XWyB60NtXRu0=
diff --git a/integrations/create_no_session_test.go b/integrations/create_no_session_test.go
index 5380d17509..671c6cd517 100644
--- a/integrations/create_no_session_test.go
+++ b/integrations/create_no_session_test.go
@@ -58,8 +58,8 @@ func TestSessionFileCreation(t *testing.T) {
oldSessionConfig := setting.SessionConfig.ProviderConfig
defer func() {
setting.SessionConfig.ProviderConfig = oldSessionConfig
- mac = routes.NewMacaron()
- routes.RegisterRoutes(mac)
+ c = routes.NewChi()
+ routes.RegisterRoutes(c)
}()
var config session.Options
@@ -83,8 +83,8 @@ func TestSessionFileCreation(t *testing.T) {
setting.SessionConfig.ProviderConfig = string(newConfigBytes)
- mac = routes.NewMacaron()
- routes.RegisterRoutes(mac)
+ c = routes.NewChi()
+ routes.RegisterRoutes(c)
t.Run("NoSessionOnViewIssue", func(t *testing.T) {
defer PrintCurrentTest(t)()
diff --git a/integrations/git_helper_for_declarative_test.go b/integrations/git_helper_for_declarative_test.go
index 5823ce38dc..04b4c99013 100644
--- a/integrations/git_helper_for_declarative_test.go
+++ b/integrations/git_helper_for_declarative_test.go
@@ -82,7 +82,7 @@ func onGiteaRun(t *testing.T, callback func(*testing.T, *url.URL), prepare ...bo
defer prepareTestEnv(t, 1)()
}
s := http.Server{
- Handler: mac,
+ Handler: c,
}
u, err := url.Parse(setting.AppURL)
diff --git a/integrations/integration_test.go b/integrations/integration_test.go
index 13a1bac370..1e42fb5333 100644
--- a/integrations/integration_test.go
+++ b/integrations/integration_test.go
@@ -34,13 +34,13 @@ import (
"code.gitea.io/gitea/routers"
"code.gitea.io/gitea/routers/routes"
- "gitea.com/macaron/macaron"
"github.com/PuerkitoBio/goquery"
+ "github.com/go-chi/chi"
"github.com/stretchr/testify/assert"
"github.com/unknwon/com"
)
-var mac *macaron.Macaron
+var c chi.Router
type NilResponseRecorder struct {
httptest.ResponseRecorder
@@ -67,8 +67,8 @@ func TestMain(m *testing.M) {
defer cancel()
initIntegrationTest()
- mac = routes.NewMacaron()
- routes.RegisterRoutes(mac)
+ c = routes.NewChi()
+ routes.RegisterRoutes(c)
// integration test settings...
if setting.Cfg != nil {
@@ -404,7 +404,7 @@ const NoExpectedStatus = -1
func MakeRequest(t testing.TB, req *http.Request, expectedStatus int) *httptest.ResponseRecorder {
t.Helper()
recorder := httptest.NewRecorder()
- mac.ServeHTTP(recorder, req)
+ c.ServeHTTP(recorder, req)
if expectedStatus != NoExpectedStatus {
if !assert.EqualValues(t, expectedStatus, recorder.Code,
"Request: %s %s", req.Method, req.URL.String()) {
@@ -417,7 +417,7 @@ func MakeRequest(t testing.TB, req *http.Request, expectedStatus int) *httptest.
func MakeRequestNilResponseRecorder(t testing.TB, req *http.Request, expectedStatus int) *NilResponseRecorder {
t.Helper()
recorder := NewNilResponseRecorder()
- mac.ServeHTTP(recorder, req)
+ c.ServeHTTP(recorder, req)
if expectedStatus != NoExpectedStatus {
if !assert.EqualValues(t, expectedStatus, recorder.Code,
"Request: %s %s", req.Method, req.URL.String()) {
diff --git a/integrations/oauth_test.go b/integrations/oauth_test.go
index 1307baba89..a9e48b061f 100644
--- a/integrations/oauth_test.go
+++ b/integrations/oauth_test.go
@@ -5,7 +5,9 @@
package integrations
import (
+ "bytes"
"encoding/json"
+ "io/ioutil"
"testing"
"code.gitea.io/gitea/modules/setting"
@@ -233,11 +235,21 @@ func TestRefreshTokenInvalidation(t *testing.T) {
"redirect_uri": "a",
"refresh_token": parsed.RefreshToken,
})
+ // tip: Why this changed, because macaron will set req.Body back when consume the req but chi will not.
+ bs, err := ioutil.ReadAll(refreshReq.Body)
+ assert.NoError(t, err)
+
+ refreshReq.Body = ioutil.NopCloser(bytes.NewReader(bs))
MakeRequest(t, refreshReq, 200)
+
+ refreshReq.Body = ioutil.NopCloser(bytes.NewReader(bs))
MakeRequest(t, refreshReq, 200)
// test with invalidation
setting.OAuth2.InvalidateRefreshTokens = true
+ refreshReq.Body = ioutil.NopCloser(bytes.NewReader(bs))
MakeRequest(t, refreshReq, 200)
+
+ refreshReq.Body = ioutil.NopCloser(bytes.NewReader(bs))
MakeRequest(t, refreshReq, 400)
}
diff --git a/modules/public/dynamic.go b/modules/public/dynamic.go
index 07f83e1f6a..f1a4dbb1a3 100644
--- a/modules/public/dynamic.go
+++ b/modules/public/dynamic.go
@@ -6,11 +6,9 @@
package public
-import (
- "gitea.com/macaron/macaron"
-)
+import "net/http"
// Static implements the macaron static handler for serving assets.
-func Static(opts *Options) macaron.Handler {
+func Static(opts *Options) func(next http.Handler) http.Handler {
return opts.staticHandler(opts.Directory)
}
diff --git a/modules/public/public.go b/modules/public/public.go
index 2dcc530a73..3a2fa4c57c 100644
--- a/modules/public/public.go
+++ b/modules/public/public.go
@@ -15,8 +15,6 @@ import (
"time"
"code.gitea.io/gitea/modules/setting"
-
- "gitea.com/macaron/macaron"
)
// Options represents the available options to configure the macaron handler.
@@ -41,7 +39,7 @@ var KnownPublicEntries = []string{
}
// Custom implements the macaron static handler for serving custom assets.
-func Custom(opts *Options) macaron.Handler {
+func Custom(opts *Options) func(next http.Handler) http.Handler {
return opts.staticHandler(path.Join(setting.CustomPath, "public"))
}
@@ -52,7 +50,7 @@ type staticFileSystem struct {
func newStaticFileSystem(directory string) staticFileSystem {
if !filepath.IsAbs(directory) {
- directory = filepath.Join(macaron.Root, directory)
+ directory = filepath.Join(setting.AppWorkPath, directory)
}
dir := http.Dir(directory)
return staticFileSystem{&dir}
@@ -63,39 +61,43 @@ func (fs staticFileSystem) Open(name string) (http.File, error) {
}
// StaticHandler sets up a new middleware for serving static files in the
-func StaticHandler(dir string, opts *Options) macaron.Handler {
+func StaticHandler(dir string, opts *Options) func(next http.Handler) http.Handler {
return opts.staticHandler(dir)
}
-func (opts *Options) staticHandler(dir string) macaron.Handler {
- // Defaults
- if len(opts.IndexFile) == 0 {
- opts.IndexFile = "index.html"
- }
- // Normalize the prefix if provided
- if opts.Prefix != "" {
- // Ensure we have a leading '/'
- if opts.Prefix[0] != '/' {
- opts.Prefix = "/" + opts.Prefix
+func (opts *Options) staticHandler(dir string) func(next http.Handler) http.Handler {
+ return func(next http.Handler) http.Handler {
+ // Defaults
+ if len(opts.IndexFile) == 0 {
+ opts.IndexFile = "index.html"
+ }
+ // Normalize the prefix if provided
+ if opts.Prefix != "" {
+ // Ensure we have a leading '/'
+ if opts.Prefix[0] != '/' {
+ opts.Prefix = "/" + opts.Prefix
+ }
+ // Remove any trailing '/'
+ opts.Prefix = strings.TrimRight(opts.Prefix, "/")
+ }
+ if opts.FileSystem == nil {
+ opts.FileSystem = newStaticFileSystem(dir)
}
- // Remove any trailing '/'
- opts.Prefix = strings.TrimRight(opts.Prefix, "/")
- }
- if opts.FileSystem == nil {
- opts.FileSystem = newStaticFileSystem(dir)
- }
- return func(ctx *macaron.Context, log *log.Logger) {
- opts.handle(ctx, log, opts)
+ return http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
+ if !opts.handle(w, req, opts) {
+ next.ServeHTTP(w, req)
+ }
+ })
}
}
-func (opts *Options) handle(ctx *macaron.Context, log *log.Logger, opt *Options) bool {
- if ctx.Req.Method != "GET" && ctx.Req.Method != "HEAD" {
+func (opts *Options) handle(w http.ResponseWriter, req *http.Request, opt *Options) bool {
+ if req.Method != "GET" && req.Method != "HEAD" {
return false
}
- file := ctx.Req.URL.Path
+ file := req.URL.Path
// if we have a prefix, filter requests by stripping the prefix
if opt.Prefix != "" {
if !strings.HasPrefix(file, opt.Prefix) {
@@ -117,7 +119,7 @@ func (opts *Options) handle(ctx *macaron.Context, log *log.Logger, opt *Options)
}
for _, entry := range KnownPublicEntries {
if entry == parts[1] {
- ctx.Resp.WriteHeader(404)
+ w.WriteHeader(404)
return true
}
}
@@ -135,8 +137,8 @@ func (opts *Options) handle(ctx *macaron.Context, log *log.Logger, opt *Options)
// Try to serve index file
if fi.IsDir() {
// Redirect if missing trailing slash.
- if !strings.HasSuffix(ctx.Req.URL.Path, "/") {
- http.Redirect(ctx.Resp, ctx.Req.Request, path.Clean(ctx.Req.URL.Path+"/"), http.StatusFound)
+ if !strings.HasSuffix(req.URL.Path, "/") {
+ http.Redirect(w, req, path.Clean(req.URL.Path+"/"), http.StatusFound)
return true
}
@@ -148,7 +150,7 @@ func (opts *Options) handle(ctx *macaron.Context, log *log.Logger, opt *Options)
fi, err = f.Stat()
if err != nil || fi.IsDir() {
- return true
+ return false
}
}
@@ -158,16 +160,16 @@ func (opts *Options) handle(ctx *macaron.Context, log *log.Logger, opt *Options)
// Add an Expires header to the static content
if opt.ExpiresAfter > 0 {
- ctx.Resp.Header().Set("Expires", time.Now().Add(opt.ExpiresAfter).UTC().Format(http.TimeFormat))
+ w.Header().Set("Expires", time.Now().Add(opt.ExpiresAfter).UTC().Format(http.TimeFormat))
tag := GenerateETag(fmt.Sprint(fi.Size()), fi.Name(), fi.ModTime().UTC().Format(http.TimeFormat))
- ctx.Resp.Header().Set("ETag", tag)
- if ctx.Req.Header.Get("If-None-Match") == tag {
- ctx.Resp.WriteHeader(304)
- return false
+ w.Header().Set("ETag", tag)
+ if req.Header.Get("If-None-Match") == tag {
+ w.WriteHeader(304)
+ return true
}
}
- http.ServeContent(ctx.Resp, ctx.Req.Request, file, fi.ModTime(), f)
+ http.ServeContent(w, req, file, fi.ModTime(), f)
return true
}
diff --git a/modules/public/static.go b/modules/public/static.go
index 76050632c9..8da10567ea 100644
--- a/modules/public/static.go
+++ b/modules/public/static.go
@@ -8,12 +8,11 @@ package public
import (
"io/ioutil"
-
- "gitea.com/macaron/macaron"
+ "net/http"
)
// Static implements the macaron static handler for serving assets.
-func Static(opts *Options) macaron.Handler {
+func Static(opts *Options) func(next http.Handler) http.Handler {
opts.FileSystem = Assets
// we don't need to pass the directory, because the directory var is only
// used when in the options there is no FileSystem.
diff --git a/routers/routes/chi.go b/routers/routes/chi.go
new file mode 100644
index 0000000000..c78fe96ae4
--- /dev/null
+++ b/routers/routes/chi.go
@@ -0,0 +1,260 @@
+// Copyright 2020 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package routes
+
+import (
+ "bytes"
+ "errors"
+ "fmt"
+ "io"
+ "net/http"
+ "os"
+ "path"
+ "strings"
+ "text/template"
+ "time"
+
+ "code.gitea.io/gitea/modules/log"
+ "code.gitea.io/gitea/modules/public"
+ "code.gitea.io/gitea/modules/setting"
+ "code.gitea.io/gitea/modules/storage"
+
+ "github.com/go-chi/chi"
+ "github.com/go-chi/chi/middleware"
+)
+
+type routerLoggerOptions struct {
+ req *http.Request
+ Identity *string
+ Start *time.Time
+ ResponseWriter http.ResponseWriter
+}
+
+// SignedUserName returns signed user's name via context
+// FIXME currently no any data stored on gin.Context but macaron.Context, so this will
+// return "" before we remove macaron totally
+func SignedUserName(req *http.Request) string {
+ if v, ok := req.Context().Value("SignedUserName").(string); ok {
+ return v
+ }
+ return ""
+}
+
+func setupAccessLogger(c chi.Router) {
+ logger := log.GetLogger("access")
+
+ logTemplate, _ := template.New("log").Parse(setting.AccessLogTemplate)
+ c.Use(func(next http.Handler) http.Handler {
+ return http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
+ start := time.Now()
+ next.ServeHTTP(w, req)
+ identity := "-"
+ if val := SignedUserName(req); val != "" {
+ identity = val
+ }
+ rw := w
+
+ buf := bytes.NewBuffer([]byte{})
+ err := logTemplate.Execute(buf, routerLoggerOptions{
+ req: req,
+ Identity: &identity,
+ Start: &start,
+ ResponseWriter: rw,
+ })
+ if err != nil {
+ log.Error("Could not set up macaron access logger: %v", err.Error())
+ }
+
+ err = logger.SendLog(log.INFO, "", "", 0, buf.String(), "")
+ if err != nil {
+ log.Error("Could not set up macaron access logger: %v", err.Error())
+ }
+ })
+ })
+}
+
+// LoggerHandler is a handler that will log the routing to the default gitea log
+func LoggerHandler(level log.Level) func(next http.Handler) http.Handler {
+ return func(next http.Handler) http.Handler {
+ return http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
+ start := time.Now()
+
+ _ = log.GetLogger("router").Log(0, level, "Started %s %s for %s", log.ColoredMethod(req.Method), req.RequestURI, req.RemoteAddr)
+
+ next.ServeHTTP(w, req)
+
+ ww := middleware.NewWrapResponseWriter(w, req.ProtoMajor)
+
+ status := ww.Status()
+ _ = log.GetLogger("router").Log(0, level, "Completed %s %s %v %s in %v", log.ColoredMethod(req.Method), req.RequestURI, log.ColoredStatus(status), log.ColoredStatus(status, http.StatusText(status)), log.ColoredTime(time.Since(start)))
+ })
+ }
+}
+
+// Recovery returns a middleware that recovers from any panics and writes a 500 and a log if so.
+// Although similar to macaron.Recovery() the main difference is that this error will be created
+// with the gitea 500 page.
+func Recovery() func(next http.Handler) http.Handler {
+ return func(next http.Handler) http.Handler {
+ return http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
+ defer func() {
+ if err := recover(); err != nil {
+ combinedErr := fmt.Sprintf("PANIC: %v\n%s", err, string(log.Stack(2)))
+ http.Error(w, combinedErr, 500)
+ }
+ }()
+
+ next.ServeHTTP(w, req)
+ })
+ }
+}
+
+func storageHandler(storageSetting setting.Storage, prefix string, objStore storage.ObjectStorage) func(next http.Handler) http.Handler {
+ return func(next http.Handler) http.Handler {
+ if storageSetting.ServeDirect {
+ return http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
+ if req.Method != "GET" && req.Method != "HEAD" {
+ next.ServeHTTP(w, req)
+ return
+ }
+
+ if !strings.HasPrefix(req.RequestURI, "/"+prefix) {
+ next.ServeHTTP(w, req)
+ return
+ }
+
+ rPath := strings.TrimPrefix(req.RequestURI, "/"+prefix)
+ u, err := objStore.URL(rPath, path.Base(rPath))
+ if err != nil {
+ if os.IsNotExist(err) || errors.Is(err, os.ErrNotExist) {
+ log.Warn("Unable to find %s %s", prefix, rPath)
+ http.Error(w, "file not found", 404)
+ return
+ }
+ log.Error("Error whilst getting URL for %s %s. Error: %v", prefix, rPath, err)
+ http.Error(w, fmt.Sprintf("Error whilst getting URL for %s %s", prefix, rPath), 500)
+ return
+ }
+ http.Redirect(
+ w,
+ req,
+ u.String(),
+ 301,
+ )
+ })
+ }
+
+ return http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
+ if req.Method != "GET" && req.Method != "HEAD" {
+ next.ServeHTTP(w, req)
+ return
+ }
+
+ if !strings.HasPrefix(req.RequestURI, "/"+prefix) {
+ next.ServeHTTP(w, req)
+ return
+ }
+
+ rPath := strings.TrimPrefix(req.RequestURI, "/"+prefix)
+ rPath = strings.TrimPrefix(rPath, "/")
+ //If we have matched and access to release or issue
+ fr, err := objStore.Open(rPath)
+ if err != nil {
+ if os.IsNotExist(err) || errors.Is(err, os.ErrNotExist) {
+ log.Warn("Unable to find %s %s", prefix, rPath)
+ http.Error(w, "file not found", 404)
+ return
+ }
+ log.Error("Error whilst opening %s %s. Error: %v", prefix, rPath, err)
+ http.Error(w, fmt.Sprintf("Error whilst opening %s %s", prefix, rPath), 500)
+ return
+ }
+ defer fr.Close()
+
+ _, err = io.Copy(w, fr)
+ if err != nil {
+ log.Error("Error whilst rendering %s %s. Error: %v", prefix, rPath, err)
+ http.Error(w, fmt.Sprintf("Error whilst rendering %s %s", prefix, rPath), 500)
+ return
+ }
+ })
+ }
+}
+
+// NewChi creates a chi Router
+func NewChi() chi.Router {
+ c := chi.NewRouter()
+ if !setting.DisableRouterLog && setting.RouterLogLevel != log.NONE {
+ if log.GetLogger("router").GetLevel() <= setting.RouterLogLevel {
+ c.Use(LoggerHandler(setting.RouterLogLevel))
+ }
+ }
+ c.Use(Recovery())
+ if setting.EnableAccessLog {
+ setupAccessLogger(c)
+ }
+ if setting.ProdMode {
+ log.Warn("ProdMode ignored")
+ }
+
+ c.Use(public.Custom(
+ &public.Options{
+ SkipLogging: setting.DisableRouterLog,
+ ExpiresAfter: time.Hour * 6,
+ },
+ ))
+ c.Use(public.Static(
+ &public.Options{
+ Directory: path.Join(setting.StaticRootPath, "public"),
+ SkipLogging: setting.DisableRouterLog,
+ ExpiresAfter: time.Hour * 6,
+ },
+ ))
+
+ c.Use(storageHandler(setting.Avatar.Storage, "avatars", storage.Avatars))
+ c.Use(storageHandler(setting.RepoAvatar.Storage, "repo-avatars", storage.RepoAvatars))
+
+ return c
+}
+
+// RegisterInstallRoute registers the install routes
+func RegisterInstallRoute(c chi.Router) {
+ m := NewMacaron()
+ RegisterMacaronInstallRoute(m)
+
+ c.NotFound(func(w http.ResponseWriter, req *http.Request) {
+ m.ServeHTTP(w, req)
+ })
+
+ c.MethodNotAllowed(func(w http.ResponseWriter, req *http.Request) {
+ m.ServeHTTP(w, req)
+ })
+}
+
+// RegisterRoutes registers gin routes
+func RegisterRoutes(c chi.Router) {
+ // for health check
+ c.Head("/", func(w http.ResponseWriter, req *http.Request) {
+ w.WriteHeader(http.StatusOK)
+ })
+
+ // robots.txt
+ if setting.HasRobotsTxt {
+ c.Get("/robots.txt", func(w http.ResponseWriter, req *http.Request) {
+ http.ServeFile(w, req, path.Join(setting.CustomPath, "robots.txt"))
+ })
+ }
+
+ m := NewMacaron()
+ RegisterMacaronRoutes(m)
+
+ c.NotFound(func(w http.ResponseWriter, req *http.Request) {
+ m.ServeHTTP(w, req)
+ })
+
+ c.MethodNotAllowed(func(w http.ResponseWriter, req *http.Request) {
+ m.ServeHTTP(w, req)
+ })
+}
diff --git a/routers/routes/routes.go b/routers/routes/macaron.go
similarity index 88%
rename from routers/routes/routes.go
rename to routers/routes/macaron.go
index 285510dbe3..7178ead679 100644
--- a/routers/routes/routes.go
+++ b/routers/routes/macaron.go
@@ -5,17 +5,8 @@
package routes
import (
- "bytes"
"encoding/gob"
- "errors"
- "fmt"
- "io"
- "net/http"
- "os"
"path"
- "strings"
- "text/template"
- "time"
"code.gitea.io/gitea/models"
"code.gitea.io/gitea/modules/auth"
@@ -24,9 +15,7 @@ import (
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/metrics"
"code.gitea.io/gitea/modules/options"
- "code.gitea.io/gitea/modules/public"
"code.gitea.io/gitea/modules/setting"
- "code.gitea.io/gitea/modules/storage"
"code.gitea.io/gitea/modules/templates"
"code.gitea.io/gitea/modules/validation"
"code.gitea.io/gitea/routers"
@@ -58,129 +47,6 @@ import (
"github.com/tstranex/u2f"
)
-type routerLoggerOptions struct {
- Ctx *macaron.Context
- Identity *string
- Start *time.Time
- ResponseWriter *macaron.ResponseWriter
-}
-
-func setupAccessLogger(m *macaron.Macaron) {
- logger := log.GetLogger("access")
-
- logTemplate, _ := template.New("log").Parse(setting.AccessLogTemplate)
- m.Use(func(ctx *macaron.Context) {
- start := time.Now()
- ctx.Next()
- identity := "-"
- if val, ok := ctx.Data["SignedUserName"]; ok {
- if stringVal, ok := val.(string); ok && stringVal != "" {
- identity = stringVal
- }
- }
- rw := ctx.Resp.(macaron.ResponseWriter)
-
- buf := bytes.NewBuffer([]byte{})
- err := logTemplate.Execute(buf, routerLoggerOptions{
- Ctx: ctx,
- Identity: &identity,
- Start: &start,
- ResponseWriter: &rw,
- })
- if err != nil {
- log.Error("Could not set up macaron access logger: %v", err.Error())
- }
-
- err = logger.SendLog(log.INFO, "", "", 0, buf.String(), "")
- if err != nil {
- log.Error("Could not set up macaron access logger: %v", err.Error())
- }
- })
-}
-
-// RouterHandler is a macaron handler that will log the routing to the default gitea log
-func RouterHandler(level log.Level) func(ctx *macaron.Context) {
- return func(ctx *macaron.Context) {
- start := time.Now()
-
- _ = log.GetLogger("router").Log(0, level, "Started %s %s for %s", log.ColoredMethod(ctx.Req.Method), ctx.Req.URL.RequestURI(), ctx.RemoteAddr())
-
- rw := ctx.Resp.(macaron.ResponseWriter)
- ctx.Next()
-
- status := rw.Status()
- _ = log.GetLogger("router").Log(0, level, "Completed %s %s %v %s in %v", log.ColoredMethod(ctx.Req.Method), ctx.Req.URL.RequestURI(), log.ColoredStatus(status), log.ColoredStatus(status, http.StatusText(rw.Status())), log.ColoredTime(time.Since(start)))
- }
-}
-
-func storageHandler(storageSetting setting.Storage, prefix string, objStore storage.ObjectStorage) macaron.Handler {
- if storageSetting.ServeDirect {
- return func(ctx *macaron.Context) {
- req := ctx.Req.Request
- if req.Method != "GET" && req.Method != "HEAD" {
- return
- }
-
- if !strings.HasPrefix(req.RequestURI, "/"+prefix) {
- return
- }
-
- rPath := strings.TrimPrefix(req.RequestURI, "/"+prefix)
- u, err := objStore.URL(rPath, path.Base(rPath))
- if err != nil {
- if os.IsNotExist(err) || errors.Is(err, os.ErrNotExist) {
- log.Warn("Unable to find %s %s", prefix, rPath)
- ctx.Error(404, "file not found")
- return
- }
- log.Error("Error whilst getting URL for %s %s. Error: %v", prefix, rPath, err)
- ctx.Error(500, fmt.Sprintf("Error whilst getting URL for %s %s", prefix, rPath))
- return
- }
- http.Redirect(
- ctx.Resp,
- req,
- u.String(),
- 301,
- )
- }
- }
-
- return func(ctx *macaron.Context) {
- req := ctx.Req.Request
- if req.Method != "GET" && req.Method != "HEAD" {
- return
- }
-
- if !strings.HasPrefix(req.RequestURI, "/"+prefix) {
- return
- }
-
- rPath := strings.TrimPrefix(req.RequestURI, "/"+prefix)
- rPath = strings.TrimPrefix(rPath, "/")
- //If we have matched and access to release or issue
- fr, err := objStore.Open(rPath)
- if err != nil {
- if os.IsNotExist(err) || errors.Is(err, os.ErrNotExist) {
- log.Warn("Unable to find %s %s", prefix, rPath)
- ctx.Error(404, "file not found")
- return
- }
- log.Error("Error whilst opening %s %s. Error: %v", prefix, rPath, err)
- ctx.Error(500, fmt.Sprintf("Error whilst opening %s %s", prefix, rPath))
- return
- }
- defer fr.Close()
-
- _, err = io.Copy(ctx.Resp, fr)
- if err != nil {
- log.Error("Error whilst rendering %s %s. Error: %v", prefix, rPath, err)
- ctx.Error(500, fmt.Sprintf("Error whilst rendering %s %s", prefix, rPath))
- return
- }
- }
-}
-
// NewMacaron initializes Macaron instance.
func NewMacaron() *macaron.Macaron {
gob.Register(&u2f.Challenge{})
@@ -188,47 +54,19 @@ func NewMacaron() *macaron.Macaron {
if setting.RedirectMacaronLog {
loggerAsWriter := log.NewLoggerAsWriter("INFO", log.GetLogger("macaron"))
m = macaron.NewWithLogger(loggerAsWriter)
- if !setting.DisableRouterLog && setting.RouterLogLevel != log.NONE {
- if log.GetLogger("router").GetLevel() <= setting.RouterLogLevel {
- m.Use(RouterHandler(setting.RouterLogLevel))
- }
- }
} else {
m = macaron.New()
- if !setting.DisableRouterLog {
- m.Use(macaron.Logger())
- }
}
- // Access Logger is similar to Router Log but more configurable and by default is more like the NCSA Common Log format
- if setting.EnableAccessLog {
- setupAccessLogger(m)
- }
- m.Use(macaron.Recovery())
+
if setting.EnableGzip {
m.Use(gzip.Middleware())
}
if setting.Protocol == setting.FCGI || setting.Protocol == setting.FCGIUnix {
m.SetURLPrefix(setting.AppSubURL)
}
- m.Use(public.Custom(
- &public.Options{
- SkipLogging: setting.DisableRouterLog,
- ExpiresAfter: setting.StaticCacheTime,
- },
- ))
- m.Use(public.Static(
- &public.Options{
- Directory: path.Join(setting.StaticRootPath, "public"),
- SkipLogging: setting.DisableRouterLog,
- ExpiresAfter: setting.StaticCacheTime,
- },
- ))
m.Use(templates.HTMLRenderer())
- m.Use(storageHandler(setting.Avatar.Storage, "avatars", storage.Avatars))
- m.Use(storageHandler(setting.RepoAvatar.Storage, "repo-avatars", storage.RepoAvatars))
-
mailer.InitMailRender(templates.Mailer())
localeNames, err := options.Dir("locale")
@@ -294,15 +132,12 @@ func NewMacaron() *macaron.Macaron {
DisableDebug: !setting.EnablePprof,
}))
m.Use(context.Contexter())
- // OK we are now set-up enough to allow us to create a nicer recovery than
- // the default macaron recovery
- m.Use(context.Recovery())
m.SetAutoHead(true)
return m
}
-// RegisterInstallRoute registers the install routes
-func RegisterInstallRoute(m *macaron.Macaron) {
+// RegisterMacaronInstallRoute registers the install routes
+func RegisterMacaronInstallRoute(m *macaron.Macaron) {
m.Combo("/", routers.InstallInit).Get(routers.Install).
Post(binding.BindIgnErr(auth.InstallForm{}), routers.InstallPost)
m.NotFound(func(ctx *context.Context) {
@@ -310,8 +145,8 @@ func RegisterInstallRoute(m *macaron.Macaron) {
})
}
-// RegisterRoutes routes routes to Macaron
-func RegisterRoutes(m *macaron.Macaron) {
+// RegisterMacaronRoutes routes routes to Macaron
+func RegisterMacaronRoutes(m *macaron.Macaron) {
reqSignIn := context.Toggle(&context.ToggleOptions{SignInRequired: true})
ignSignIn := context.Toggle(&context.ToggleOptions{SignInRequired: setting.Service.RequireSignInView})
ignSignInAndCsrf := context.Toggle(&context.ToggleOptions{DisableCSRF: true})
@@ -353,9 +188,6 @@ func RegisterRoutes(m *macaron.Macaron) {
// Especially some AJAX requests, we can reduce middleware number to improve performance.
// Routers.
// for health check
- m.Head("/", func() string {
- return ""
- })
m.Get("/", routers.Home)
m.Group("/explore", func() {
m.Get("", func(ctx *context.Context) {
@@ -1146,15 +978,6 @@ func RegisterRoutes(m *macaron.Macaron) {
private.RegisterRoutes(m)
})
- // robots.txt
- m.Get("/robots.txt", func(ctx *context.Context) {
- if setting.HasRobotsTxt {
- ctx.ServeFileContent(path.Join(setting.CustomPath, "robots.txt"))
- } else {
- ctx.NotFound("", nil)
- }
- })
-
m.Get("/apple-touch-icon.png", func(ctx *context.Context) {
ctx.Redirect(path.Join(setting.StaticURLPrefix, "img/apple-touch-icon.png"), 301)
})
diff --git a/vendor/github.com/go-chi/chi/.gitignore b/vendor/github.com/go-chi/chi/.gitignore
new file mode 100644
index 0000000000..ba22c99a99
--- /dev/null
+++ b/vendor/github.com/go-chi/chi/.gitignore
@@ -0,0 +1,3 @@
+.idea
+*.sw?
+.vscode
diff --git a/vendor/github.com/go-chi/chi/.travis.yml b/vendor/github.com/go-chi/chi/.travis.yml
new file mode 100644
index 0000000000..7b8e26bcee
--- /dev/null
+++ b/vendor/github.com/go-chi/chi/.travis.yml
@@ -0,0 +1,20 @@
+language: go
+
+go:
+ - 1.10.x
+ - 1.11.x
+ - 1.12.x
+ - 1.13.x
+ - 1.14.x
+
+script:
+ - go get -d -t ./...
+ - go vet ./...
+ - go test ./...
+ - >
+ go_version=$(go version);
+ if [ ${go_version:13:4} = "1.12" ]; then
+ go get -u golang.org/x/tools/cmd/goimports;
+ goimports -d -e ./ | grep '.*' && { echo; echo "Aborting due to non-empty goimports output."; exit 1; } || :;
+ fi
+
diff --git a/vendor/github.com/go-chi/chi/CHANGELOG.md b/vendor/github.com/go-chi/chi/CHANGELOG.md
new file mode 100644
index 0000000000..9a64a72eec
--- /dev/null
+++ b/vendor/github.com/go-chi/chi/CHANGELOG.md
@@ -0,0 +1,190 @@
+# Changelog
+
+## v4.1.2 (2020-06-02)
+
+- fix that handles MethodNotAllowed with path variables, thank you @caseyhadden for your contribution
+- fix to replace nested wildcards correctly in RoutePattern, thank you @@unmultimedio for your contribution
+- History of changes: see https://github.com/go-chi/chi/compare/v4.1.1...v4.1.2
+
+
+## v4.1.1 (2020-04-16)
+
+- fix for issue https://github.com/go-chi/chi/issues/411 which allows for overlapping regexp
+ route to the correct handler through a recursive tree search, thanks to @Jahaja for the PR/fix!
+- new middleware.RouteHeaders as a simple router for request headers with wildcard support
+- History of changes: see https://github.com/go-chi/chi/compare/v4.1.0...v4.1.1
+
+
+## v4.1.0 (2020-04-1)
+
+- middleware.LogEntry: Write method on interface now passes the response header
+ and an extra interface type useful for custom logger implementations.
+- middleware.WrapResponseWriter: minor fix
+- middleware.Recoverer: a bit prettier
+- History of changes: see https://github.com/go-chi/chi/compare/v4.0.4...v4.1.0
+
+
+## v4.0.4 (2020-03-24)
+
+- middleware.Recoverer: new pretty stack trace printing (https://github.com/go-chi/chi/pull/496)
+- a few minor improvements and fixes
+- History of changes: see https://github.com/go-chi/chi/compare/v4.0.3...v4.0.4
+
+
+## v4.0.3 (2020-01-09)
+
+- core: fix regexp routing to include default value when param is not matched
+- middleware: rewrite of middleware.Compress
+- middleware: suppress http.ErrAbortHandler in middleware.Recoverer
+- History of changes: see https://github.com/go-chi/chi/compare/v4.0.2...v4.0.3
+
+
+## v4.0.2 (2019-02-26)
+
+- Minor fixes
+- History of changes: see https://github.com/go-chi/chi/compare/v4.0.1...v4.0.2
+
+
+## v4.0.1 (2019-01-21)
+
+- Fixes issue with compress middleware: #382 #385
+- History of changes: see https://github.com/go-chi/chi/compare/v4.0.0...v4.0.1
+
+
+## v4.0.0 (2019-01-10)
+
+- chi v4 requires Go 1.10.3+ (or Go 1.9.7+) - we have deprecated support for Go 1.7 and 1.8
+- router: respond with 404 on router with no routes (#362)
+- router: additional check to ensure wildcard is at the end of a url pattern (#333)
+- middleware: deprecate use of http.CloseNotifier (#347)
+- middleware: fix RedirectSlashes to include query params on redirect (#334)
+- History of changes: see https://github.com/go-chi/chi/compare/v3.3.4...v4.0.0
+
+
+## v3.3.4 (2019-01-07)
+
+- Minor middleware improvements. No changes to core library/router. Moving v3 into its
+- own branch as a version of chi for Go 1.7, 1.8, 1.9, 1.10, 1.11
+- History of changes: see https://github.com/go-chi/chi/compare/v3.3.3...v3.3.4
+
+
+## v3.3.3 (2018-08-27)
+
+- Minor release
+- See https://github.com/go-chi/chi/compare/v3.3.2...v3.3.3
+
+
+## v3.3.2 (2017-12-22)
+
+- Support to route trailing slashes on mounted sub-routers (#281)
+- middleware: new `ContentCharset` to check matching charsets. Thank you
+ @csucu for your community contribution!
+
+
+## v3.3.1 (2017-11-20)
+
+- middleware: new `AllowContentType` handler for explicit whitelist of accepted request Content-Types
+- middleware: new `SetHeader` handler for short-hand middleware to set a response header key/value
+- Minor bug fixes
+
+
+## v3.3.0 (2017-10-10)
+
+- New chi.RegisterMethod(method) to add support for custom HTTP methods, see _examples/custom-method for usage
+- Deprecated LINK and UNLINK methods from the default list, please use `chi.RegisterMethod("LINK")` and `chi.RegisterMethod("UNLINK")` in an `init()` function
+
+
+## v3.2.1 (2017-08-31)
+
+- Add new `Match(rctx *Context, method, path string) bool` method to `Routes` interface
+ and `Mux`. Match searches the mux's routing tree for a handler that matches the method/path
+- Add new `RouteMethod` to `*Context`
+- Add new `Routes` pointer to `*Context`
+- Add new `middleware.GetHead` to route missing HEAD requests to GET handler
+- Updated benchmarks (see README)
+
+
+## v3.1.5 (2017-08-02)
+
+- Setup golint and go vet for the project
+- As per golint, we've redefined `func ServerBaseContext(h http.Handler, baseCtx context.Context) http.Handler`
+ to `func ServerBaseContext(baseCtx context.Context, h http.Handler) http.Handler`
+
+
+## v3.1.0 (2017-07-10)
+
+- Fix a few minor issues after v3 release
+- Move `docgen` sub-pkg to https://github.com/go-chi/docgen
+- Move `render` sub-pkg to https://github.com/go-chi/render
+- Add new `URLFormat` handler to chi/middleware sub-pkg to make working with url mime
+ suffixes easier, ie. parsing `/articles/1.json` and `/articles/1.xml`. See comments in
+ https://github.com/go-chi/chi/blob/master/middleware/url_format.go for example usage.
+
+
+## v3.0.0 (2017-06-21)
+
+- Major update to chi library with many exciting updates, but also some *breaking changes*
+- URL parameter syntax changed from `/:id` to `/{id}` for even more flexible routing, such as
+ `/articles/{month}-{day}-{year}-{slug}`, `/articles/{id}`, and `/articles/{id}.{ext}` on the
+ same router
+- Support for regexp for routing patterns, in the form of `/{paramKey:regExp}` for example:
+ `r.Get("/articles/{name:[a-z]+}", h)` and `chi.URLParam(r, "name")`
+- Add `Method` and `MethodFunc` to `chi.Router` to allow routing definitions such as
+ `r.Method("GET", "/", h)` which provides a cleaner interface for custom handlers like
+ in `_examples/custom-handler`
+- Deprecating `mux#FileServer` helper function. Instead, we encourage users to create their
+ own using file handler with the stdlib, see `_examples/fileserver` for an example
+- Add support for LINK/UNLINK http methods via `r.Method()` and `r.MethodFunc()`
+- Moved the chi project to its own organization, to allow chi-related community packages to
+ be easily discovered and supported, at: https://github.com/go-chi
+- *NOTE:* please update your import paths to `"github.com/go-chi/chi"`
+- *NOTE:* chi v2 is still available at https://github.com/go-chi/chi/tree/v2
+
+
+## v2.1.0 (2017-03-30)
+
+- Minor improvements and update to the chi core library
+- Introduced a brand new `chi/render` sub-package to complete the story of building
+ APIs to offer a pattern for managing well-defined request / response payloads. Please
+ check out the updated `_examples/rest` example for how it works.
+- Added `MethodNotAllowed(h http.HandlerFunc)` to chi.Router interface
+
+
+## v2.0.0 (2017-01-06)
+
+- After many months of v2 being in an RC state with many companies and users running it in
+ production, the inclusion of some improvements to the middlewares, we are very pleased to
+ announce v2.0.0 of chi.
+
+
+## v2.0.0-rc1 (2016-07-26)
+
+- Huge update! chi v2 is a large refactor targetting Go 1.7+. As of Go 1.7, the popular
+ community `"net/context"` package has been included in the standard library as `"context"` and
+ utilized by `"net/http"` and `http.Request` to managing deadlines, cancelation signals and other
+ request-scoped values. We're very excited about the new context addition and are proud to
+ introduce chi v2, a minimal and powerful routing package for building large HTTP services,
+ with zero external dependencies. Chi focuses on idiomatic design and encourages the use of
+ stdlib HTTP handlers and middlwares.
+- chi v2 deprecates its `chi.Handler` interface and requires `http.Handler` or `http.HandlerFunc`
+- chi v2 stores URL routing parameters and patterns in the standard request context: `r.Context()`
+- chi v2 lower-level routing context is accessible by `chi.RouteContext(r.Context()) *chi.Context`,
+ which provides direct access to URL routing parameters, the routing path and the matching
+ routing patterns.
+- Users upgrading from chi v1 to v2, need to:
+ 1. Update the old chi.Handler signature, `func(ctx context.Context, w http.ResponseWriter, r *http.Request)` to
+ the standard http.Handler: `func(w http.ResponseWriter, r *http.Request)`
+ 2. Use `chi.URLParam(r *http.Request, paramKey string) string`
+ or `URLParamFromCtx(ctx context.Context, paramKey string) string` to access a url parameter value
+
+
+## v1.0.0 (2016-07-01)
+
+- Released chi v1 stable https://github.com/go-chi/chi/tree/v1.0.0 for Go 1.6 and older.
+
+
+## v0.9.0 (2016-03-31)
+
+- Reuse context objects via sync.Pool for zero-allocation routing [#33](https://github.com/go-chi/chi/pull/33)
+- BREAKING NOTE: due to subtle API changes, previously `chi.URLParams(ctx)["id"]` used to access url parameters
+ has changed to: `chi.URLParam(ctx, "id")`
diff --git a/vendor/github.com/go-chi/chi/CONTRIBUTING.md b/vendor/github.com/go-chi/chi/CONTRIBUTING.md
new file mode 100644
index 0000000000..c0ac2dfe85
--- /dev/null
+++ b/vendor/github.com/go-chi/chi/CONTRIBUTING.md
@@ -0,0 +1,31 @@
+# Contributing
+
+## Prerequisites
+
+1. [Install Go][go-install].
+2. Download the sources and switch the working directory:
+
+ ```bash
+ go get -u -d github.com/go-chi/chi
+ cd $GOPATH/src/github.com/go-chi/chi
+ ```
+
+## Submitting a Pull Request
+
+A typical workflow is:
+
+1. [Fork the repository.][fork] [This tip maybe also helpful.][go-fork-tip]
+2. [Create a topic branch.][branch]
+3. Add tests for your change.
+4. Run `go test`. If your tests pass, return to the step 3.
+5. Implement the change and ensure the steps from the previous step pass.
+6. Run `goimports -w .`, to ensure the new code conforms to Go formatting guideline.
+7. [Add, commit and push your changes.][git-help]
+8. [Submit a pull request.][pull-req]
+
+[go-install]: https://golang.org/doc/install
+[go-fork-tip]: http://blog.campoy.cat/2014/03/github-and-go-forking-pull-requests-and.html
+[fork]: https://help.github.com/articles/fork-a-repo
+[branch]: http://learn.github.com/p/branching.html
+[git-help]: https://guides.github.com
+[pull-req]: https://help.github.com/articles/using-pull-requests
diff --git a/vendor/github.com/go-chi/chi/LICENSE b/vendor/github.com/go-chi/chi/LICENSE
new file mode 100644
index 0000000000..d99f02ffac
--- /dev/null
+++ b/vendor/github.com/go-chi/chi/LICENSE
@@ -0,0 +1,20 @@
+Copyright (c) 2015-present Peter Kieltyka (https://github.com/pkieltyka), Google Inc.
+
+MIT License
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/vendor/github.com/go-chi/chi/README.md b/vendor/github.com/go-chi/chi/README.md
new file mode 100644
index 0000000000..3d53a61476
--- /dev/null
+++ b/vendor/github.com/go-chi/chi/README.md
@@ -0,0 +1,496 @@
+# <img alt="chi" src="https://cdn.rawgit.com/go-chi/chi/master/_examples/chi.svg" width="220" />
+
+
+[![GoDoc Widget]][GoDoc] [![Travis Widget]][Travis]
+
+`chi` is a lightweight, idiomatic and composable router for building Go HTTP services. It's
+especially good at helping you write large REST API services that are kept maintainable as your
+project grows and changes. `chi` is built on the new `context` package introduced in Go 1.7 to
+handle signaling, cancelation and request-scoped values across a handler chain.
+
+The focus of the project has been to seek out an elegant and comfortable design for writing
+REST API servers, written during the development of the Pressly API service that powers our
+public API service, which in turn powers all of our client-side applications.
+
+The key considerations of chi's design are: project structure, maintainability, standard http
+handlers (stdlib-only), developer productivity, and deconstructing a large system into many small
+parts. The core router `github.com/go-chi/chi` is quite small (less than 1000 LOC), but we've also
+included some useful/optional subpackages: [middleware](/middleware), [render](https://github.com/go-chi/render) and [docgen](https://github.com/go-chi/docgen). We hope you enjoy it too!
+
+## Install
+
+`go get -u github.com/go-chi/chi`
+
+
+## Features
+
+* **Lightweight** - cloc'd in ~1000 LOC for the chi router
+* **Fast** - yes, see [benchmarks](#benchmarks)
+* **100% compatible with net/http** - use any http or middleware pkg in the ecosystem that is also compatible with `net/http`
+* **Designed for modular/composable APIs** - middlewares, inline middlewares, route groups and subrouter mounting
+* **Context control** - built on new `context` package, providing value chaining, cancellations and timeouts
+* **Robust** - in production at Pressly, CloudFlare, Heroku, 99Designs, and many others (see [discussion](https://github.com/go-chi/chi/issues/91))
+* **Doc generation** - `docgen` auto-generates routing documentation from your source to JSON or Markdown
+* **No external dependencies** - plain ol' Go stdlib + net/http
+
+
+## Examples
+
+See [_examples/](https://github.com/go-chi/chi/blob/master/_examples/) for a variety of examples.
+
+
+**As easy as:**
+
+```go
+package main
+
+import (
+ "net/http"
+
+ "github.com/go-chi/chi"
+ "github.com/go-chi/chi/middleware"
+)
+
+func main() {
+ r := chi.NewRouter()
+ r.Use(middleware.Logger)
+ r.Get("/", func(w http.ResponseWriter, r *http.Request) {
+ w.Write([]byte("welcome"))
+ })
+ http.ListenAndServe(":3000", r)
+}
+```
+
+**REST Preview:**
+
+Here is a little preview of how routing looks like with chi. Also take a look at the generated routing docs
+in JSON ([routes.json](https://github.com/go-chi/chi/blob/master/_examples/rest/routes.json)) and in
+Markdown ([routes.md](https://github.com/go-chi/chi/blob/master/_examples/rest/routes.md)).
+
+I highly recommend reading the source of the [examples](https://github.com/go-chi/chi/blob/master/_examples/) listed
+above, they will show you all the features of chi and serve as a good form of documentation.
+
+```go
+import (
+ //...
+ "context"
+ "github.com/go-chi/chi"
+ "github.com/go-chi/chi/middleware"
+)
+
+func main() {
+ r := chi.NewRouter()
+
+ // A good base middleware stack
+ r.Use(middleware.RequestID)
+ r.Use(middleware.RealIP)
+ r.Use(middleware.Logger)
+ r.Use(middleware.Recoverer)
+
+ // Set a timeout value on the request context (ctx), that will signal
+ // through ctx.Done() that the request has timed out and further
+ // processing should be stopped.
+ r.Use(middleware.Timeout(60 * time.Second))
+
+ r.Get("/", func(w http.ResponseWriter, r *http.Request) {
+ w.Write([]byte("hi"))
+ })
+
+ // RESTy routes for "articles" resource
+ r.Route("/articles", func(r chi.Router) {
+ r.With(paginate).Get("/", listArticles) // GET /articles
+ r.With(paginate).Get("/{month}-{day}-{year}", listArticlesByDate) // GET /articles/01-16-2017
+
+ r.Post("/", createArticle) // POST /articles
+ r.Get("/search", searchArticles) // GET /articles/search
+
+ // Regexp url parameters:
+ r.Get("/{articleSlug:[a-z-]+}", getArticleBySlug) // GET /articles/home-is-toronto
+
+ // Subrouters:
+ r.Route("/{articleID}", func(r chi.Router) {
+ r.Use(ArticleCtx)
+ r.Get("/", getArticle) // GET /articles/123
+ r.Put("/", updateArticle) // PUT /articles/123
+ r.Delete("/", deleteArticle) // DELETE /articles/123
+ })
+ })
+
+ // Mount the admin sub-router
+ r.Mount("/admin", adminRouter())
+
+ http.ListenAndServe(":3333", r)
+}
+
+func ArticleCtx(next http.Handler) http.Handler {
+ return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+ articleID := chi.URLParam(r, "articleID")
+ article, err := dbGetArticle(articleID)
+ if err != nil {
+ http.Error(w, http.StatusText(404), 404)
+ return
+ }
+ ctx := context.WithValue(r.Context(), "article", article)
+ next.ServeHTTP(w, r.WithContext(ctx))
+ })
+}
+
+func getArticle(w http.ResponseWriter, r *http.Request) {
+ ctx := r.Context()
+ article, ok := ctx.Value("article").(*Article)
+ if !ok {
+ http.Error(w, http.StatusText(422), 422)
+ return
+ }
+ w.Write([]byte(fmt.Sprintf("title:%s", article.Title)))
+}
+
+// A completely separate router for administrator routes
+func adminRouter() http.Handler {
+ r := chi.NewRouter()
+ r.Use(AdminOnly)
+ r.Get("/", adminIndex)
+ r.Get("/accounts", adminListAccounts)
+ return r
+}
+
+func AdminOnly(next http.Handler) http.Handler {
+ return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+ ctx := r.Context()
+ perm, ok := ctx.Value("acl.permission").(YourPermissionType)
+ if !ok || !perm.IsAdmin() {
+ http.Error(w, http.StatusText(403), 403)
+ return
+ }
+ next.ServeHTTP(w, r)
+ })
+}
+```
+
+
+## Router interface
+
+chi's router is based on a kind of [Patricia Radix trie](https://en.wikipedia.org/wiki/Radix_tree).
+The router is fully compatible with `net/http`.
+
+Built on top of the tree is the `Router` interface:
+
+```go
+// Router consisting of the core routing methods used by chi's Mux,
+// using only the standard net/http.
+type Router interface {
+ http.Handler
+ Routes
+
+ // Use appends one or more middlewares onto the Router stack.
+ Use(middlewares ...func(http.Handler) http.Handler)
+
+ // With adds inline middlewares for an endpoint handler.
+ With(middlewares ...func(http.Handler) http.Handler) Router
+
+ // Group adds a new inline-Router along the current routing
+ // path, with a fresh middleware stack for the inline-Router.
+ Group(fn func(r Router)) Router
+
+ // Route mounts a sub-Router along a `pattern`` string.
+ Route(pattern string, fn func(r Router)) Router
+
+ // Mount attaches another http.Handler along ./pattern/*
+ Mount(pattern string, h http.Handler)
+
+ // Handle and HandleFunc adds routes for `pattern` that matches
+ // all HTTP methods.
+ Handle(pattern string, h http.Handler)
+ HandleFunc(pattern string, h http.HandlerFunc)
+
+ // Method and MethodFunc adds routes for `pattern` that matches
+ // the `method` HTTP method.
+ Method(method, pattern string, h http.Handler)
+ MethodFunc(method, pattern string, h http.HandlerFunc)
+
+ // HTTP-method routing along `pattern`
+ Connect(pattern string, h http.HandlerFunc)
+ Delete(pattern string, h http.HandlerFunc)
+ Get(pattern string, h http.HandlerFunc)
+ Head(pattern string, h http.HandlerFunc)
+ Options(pattern string, h http.HandlerFunc)
+ Patch(pattern string, h http.HandlerFunc)
+ Post(pattern string, h http.HandlerFunc)
+ Put(pattern string, h http.HandlerFunc)
+ Trace(pattern string, h http.HandlerFunc)
+
+ // NotFound defines a handler to respond whenever a route could
+ // not be found.
+ NotFound(h http.HandlerFunc)
+
+ // MethodNotAllowed defines a handler to respond whenever a method is
+ // not allowed.
+ MethodNotAllowed(h http.HandlerFunc)
+}
+
+// Routes interface adds two methods for router traversal, which is also
+// used by the github.com/go-chi/docgen package to generate documentation for Routers.
+type Routes interface {
+ // Routes returns the routing tree in an easily traversable structure.
+ Routes() []Route
+
+ // Middlewares returns the list of middlewares in use by the router.
+ Middlewares() Middlewares
+
+ // Match searches the routing tree for a handler that matches
+ // the method/path - similar to routing a http request, but without
+ // executing the handler thereafter.
+ Match(rctx *Context, method, path string) bool
+}
+```
+
+Each routing method accepts a URL `pattern` and chain of `handlers`. The URL pattern
+supports named params (ie. `/users/{userID}`) and wildcards (ie. `/admin/*`). URL parameters
+can be fetched at runtime by calling `chi.URLParam(r, "userID")` for named parameters
+and `chi.URLParam(r, "*")` for a wildcard parameter.
+
+
+### Middleware handlers
+
+chi's middlewares are just stdlib net/http middleware handlers. There is nothing special
+about them, which means the router and all the tooling is designed to be compatible and
+friendly with any middleware in the community. This offers much better extensibility and reuse
+of packages and is at the heart of chi's purpose.
+
+Here is an example of a standard net/http middleware where we assign a context key `"user"`
+the value of `"123"`. This middleware sets a hypothetical user identifier on the request
+context and calls the next handler in the chain.
+
+```go
+// HTTP middleware setting a value on the request context
+func MyMiddleware(next http.Handler) http.Handler {
+ return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+ // create new context from `r` request context, and assign key `"user"`
+ // to value of `"123"`
+ ctx := context.WithValue(r.Context(), "user", "123")
+
+ // call the next handler in the chain, passing the response writer and
+ // the updated request object with the new context value.
+ //
+ // note: context.Context values are nested, so any previously set
+ // values will be accessible as well, and the new `"user"` key
+ // will be accessible from this point forward.
+ next.ServeHTTP(w, r.WithContext(ctx))
+ })
+}
+```
+
+
+### Request handlers
+
+chi uses standard net/http request handlers. This little snippet is an example of a http.Handler
+func that reads a user identifier from the request context - hypothetically, identifying
+the user sending an authenticated request, validated+set by a previous middleware handler.
+
+```go
+// HTTP handler accessing data from the request context.
+func MyRequestHandler(w http.ResponseWriter, r *http.Request) {
+ // here we read from the request context and fetch out `"user"` key set in
+ // the MyMiddleware example above.
+ user := r.Context().Value("user").(string)
+
+ // respond to the client
+ w.Write([]byte(fmt.Sprintf("hi %s", user)))
+}
+```
+
+
+### URL parameters
+
+chi's router parses and stores URL parameters right onto the request context. Here is
+an example of how to access URL params in your net/http handlers. And of course, middlewares
+are able to access the same information.
+
+```go
+// HTTP handler accessing the url routing parameters.
+func MyRequestHandler(w http.ResponseWriter, r *http.Request) {
+ // fetch the url parameter `"userID"` from the request of a matching
+ // routing pattern. An example routing pattern could be: /users/{userID}
+ userID := chi.URLParam(r, "userID")
+
+ // fetch `"key"` from the request context
+ ctx := r.Context()
+ key := ctx.Value("key").(string)
+
+ // respond to the client
+ w.Write([]byte(fmt.Sprintf("hi %v, %v", userID, key)))
+}
+```
+
+
+## Middlewares
+
+chi comes equipped with an optional `middleware` package, providing a suite of standard
+`net/http` middlewares. Please note, any middleware in the ecosystem that is also compatible
+with `net/http` can be used with chi's mux.
+
+### Core middlewares
+
+----------------------------------------------------------------------------------------------------
+| chi/middleware Handler | description |
+| :--------------------- | :---------------------------------------------------------------------- |
+| [AllowContentType] | Explicit whitelist of accepted request Content-Types |
+| [BasicAuth] | Basic HTTP authentication |
+| [Compress] | Gzip compression for clients that accept compressed responses |
+| [GetHead] | Automatically route undefined HEAD requests to GET handlers |
+| [Heartbeat] | Monitoring endpoint to check the servers pulse |
+| [Logger] | Logs the start and end of each request with the elapsed processing time |
+| [NoCache] | Sets response headers to prevent clients from caching |
+| [Profiler] | Easily attach net/http/pprof to your routers |
+| [RealIP] | Sets a http.Request's RemoteAddr to either X-Forwarded-For or X-Real-IP |
+| [Recoverer] | Gracefully absorb panics and prints the stack trace |
+| [RequestID] | Injects a request ID into the context of each request |
+| [RedirectSlashes] | Redirect slashes on routing paths |
+| [SetHeader] | Short-hand middleware to set a response header key/value |
+| [StripSlashes] | Strip slashes on routing paths |
+| [Throttle] | Puts a ceiling on the number of concurrent requests |
+| [Timeout] | Signals to the request context when the timeout deadline is reached |
+| [URLFormat] | Parse extension from url and put it on request context |
+| [WithValue] | Short-hand middleware to set a key/value on the request context |
+----------------------------------------------------------------------------------------------------
+
+[AllowContentEncoding]: https://pkg.go.dev/github.com/go-chi/chi/middleware#AllowContentEncoding
+[AllowContentType]: https://pkg.go.dev/github.com/go-chi/chi/middleware#AllowContentType
+[BasicAuth]: https://pkg.go.dev/github.com/go-chi/chi/middleware#BasicAuth
+[Compress]: https://pkg.go.dev/github.com/go-chi/chi/middleware#Compress
+[ContentCharset]: https://pkg.go.dev/github.com/go-chi/chi/middleware#ContentCharset
+[GetHead]: https://pkg.go.dev/github.com/go-chi/chi/middleware#GetHead
+[GetReqID]: https://pkg.go.dev/github.com/go-chi/chi/middleware#GetReqID
+[Heartbeat]: https://pkg.go.dev/github.com/go-chi/chi/middleware#Heartbeat
+[Logger]: https://pkg.go.dev/github.com/go-chi/chi/middleware#Logger
+[New]: https://pkg.go.dev/github.com/go-chi/chi/middleware#New
+[NextRequestID]: https://pkg.go.dev/github.com/go-chi/chi/middleware#NextRequestID
+[NoCache]: https://pkg.go.dev/github.com/go-chi/chi/middleware#NoCache
+[PrintPrettyStack]: https://pkg.go.dev/github.com/go-chi/chi/middleware#PrintPrettyStack
+[Profiler]: https://pkg.go.dev/github.com/go-chi/chi/middleware#Profiler
+[RealIP]: https://pkg.go.dev/github.com/go-chi/chi/middleware#RealIP
+[Recoverer]: https://pkg.go.dev/github.com/go-chi/chi/middleware#Recoverer
+[RedirectSlashes]: https://pkg.go.dev/github.com/go-chi/chi/middleware#RedirectSlashes
+[RequestID]: https://pkg.go.dev/github.com/go-chi/chi/middleware#RequestID
+[RequestLogger]: https://pkg.go.dev/github.com/go-chi/chi/middleware#RequestLogger
+[SetHeader]: https://pkg.go.dev/github.com/go-chi/chi/middleware#SetHeader
+[StripSlashes]: https://pkg.go.dev/github.com/go-chi/chi/middleware#StripSlashes
+[Throttle]: https://pkg.go.dev/github.com/go-chi/chi/middleware#Throttle
+[ThrottleBacklog]: https://pkg.go.dev/github.com/go-chi/chi/middleware#ThrottleBacklog
+[ThrottleWithOpts]: https://pkg.go.dev/github.com/go-chi/chi/middleware#ThrottleWithOpts
+[Timeout]: https://pkg.go.dev/github.com/go-chi/chi/middleware#Timeout
+[URLFormat]: https://pkg.go.dev/github.com/go-chi/chi/middleware#URLFormat
+[WithLogEntry]: https://pkg.go.dev/github.com/go-chi/chi/middleware#WithLogEntry
+[WithValue]: https://pkg.go.dev/github.com/go-chi/chi/middleware#WithValue
+[Compressor]: https://pkg.go.dev/github.com/go-chi/chi/middleware#Compressor
+[DefaultLogFormatter]: https://pkg.go.dev/github.com/go-chi/chi/middleware#DefaultLogFormatter
+[EncoderFunc]: https://pkg.go.dev/github.com/go-chi/chi/middleware#EncoderFunc
+[HeaderRoute]: https://pkg.go.dev/github.com/go-chi/chi/middleware#HeaderRoute
+[HeaderRouter]: https://pkg.go.dev/github.com/go-chi/chi/middleware#HeaderRouter
+[LogEntry]: https://pkg.go.dev/github.com/go-chi/chi/middleware#LogEntry
+[LogFormatter]: https://pkg.go.dev/github.com/go-chi/chi/middleware#LogFormatter
+[LoggerInterface]: https://pkg.go.dev/github.com/go-chi/chi/middleware#LoggerInterface
+[Pattern]: https://pkg.go.dev/github.com/go-chi/chi/middleware#Pattern
+[ThrottleOpts]: https://pkg.go.dev/github.com/go-chi/chi/middleware#ThrottleOpts
+[WrapResponseWriter]: https://pkg.go.dev/github.com/go-chi/chi/middleware#WrapResponseWriter
+
+### Extra middlewares & packages
+
+Please see https://github.com/go-chi for additional packages.
+
+--------------------------------------------------------------------------------------------------------------------
+| package | description |
+|:---------------------------------------------------|:-------------------------------------------------------------
+| [cors](https://github.com/go-chi/cors) | Cross-origin resource sharing (CORS) |
+| [docgen](https://github.com/go-chi/docgen) | Print chi.Router routes at runtime |
+| [jwtauth](https://github.com/go-chi/jwtauth) | JWT authentication |
+| [hostrouter](https://github.com/go-chi/hostrouter) | Domain/host based request routing |
+| [httplog](https://github.com/go-chi/httplog) | Small but powerful structured HTTP request logging |
+| [httprate](https://github.com/go-chi/httprate) | HTTP request rate limiter |
+| [httptracer](https://github.com/go-chi/httptracer) | HTTP request performance tracing library |
+| [httpvcr](https://github.com/go-chi/httpvcr) | Write deterministic tests for external sources |
+| [stampede](https://github.com/go-chi/stampede) | HTTP request coalescer |
+--------------------------------------------------------------------------------------------------------------------
+
+
+## context?
+
+`context` is a tiny pkg that provides simple interface to signal context across call stacks
+and goroutines. It was originally written by [Sameer Ajmani](https://github.com/Sajmani)
+and is available in stdlib since go1.7.
+
+Learn more at https://blog.golang.org/context
+
+and..
+* Docs: https://golang.org/pkg/context
+* Source: https://github.com/golang/go/tree/master/src/context
+
+
+## Benchmarks
+
+The benchmark suite: https://github.com/pkieltyka/go-http-routing-benchmark
+
+Results as of Jan 9, 2019 with Go 1.11.4 on Linux X1 Carbon laptop
+
+```shell
+BenchmarkChi_Param 3000000 475 ns/op 432 B/op 3 allocs/op
+BenchmarkChi_Param5 2000000 696 ns/op 432 B/op 3 allocs/op
+BenchmarkChi_Param20 1000000 1275 ns/op 432 B/op 3 allocs/op
+BenchmarkChi_ParamWrite 3000000 505 ns/op 432 B/op 3 allocs/op
+BenchmarkChi_GithubStatic 3000000 508 ns/op 432 B/op 3 allocs/op
+BenchmarkChi_GithubParam 2000000 669 ns/op 432 B/op 3 allocs/op
+BenchmarkChi_GithubAll 10000 134627 ns/op 87699 B/op 609 allocs/op
+BenchmarkChi_GPlusStatic 3000000 402 ns/op 432 B/op 3 allocs/op
+BenchmarkChi_GPlusParam 3000000 500 ns/op 432 B/op 3 allocs/op
+BenchmarkChi_GPlus2Params 3000000 586 ns/op 432 B/op 3 allocs/op
+BenchmarkChi_GPlusAll 200000 7237 ns/op 5616 B/op 39 allocs/op
+BenchmarkChi_ParseStatic 3000000 408 ns/op 432 B/op 3 allocs/op
+BenchmarkChi_ParseParam 3000000 488 ns/op 432 B/op 3 allocs/op
+BenchmarkChi_Parse2Params 3000000 551 ns/op 432 B/op 3 allocs/op
+BenchmarkChi_ParseAll 100000 13508 ns/op 11232 B/op 78 allocs/op
+BenchmarkChi_StaticAll 20000 81933 ns/op 67826 B/op 471 allocs/op
+```
+
+Comparison with other routers: https://gist.github.com/pkieltyka/123032f12052520aaccab752bd3e78cc
+
+NOTE: the allocs in the benchmark above are from the calls to http.Request's
+`WithContext(context.Context)` method that clones the http.Request, sets the `Context()`
+on the duplicated (alloc'd) request and returns it the new request object. This is just
+how setting context on a request in Go works.
+
+
+## Credits
+
+* Carl Jackson for https://github.com/zenazn/goji
+ * Parts of chi's thinking comes from goji, and chi's middleware package
+ sources from goji.
+* Armon Dadgar for https://github.com/armon/go-radix
+* Contributions: [@VojtechVitek](https://github.com/VojtechVitek)
+
+We'll be more than happy to see [your contributions](./CONTRIBUTING.md)!
+
+
+## Beyond REST
+
+chi is just a http router that lets you decompose request handling into many smaller layers.
+Many companies use chi to write REST services for their public APIs. But, REST is just a convention
+for managing state via HTTP, and there's a lot of other pieces required to write a complete client-server
+system or network of microservices.
+
+Looking beyond REST, I also recommend some newer works in the field:
+* [webrpc](https://github.com/webrpc/webrpc) - Web-focused RPC client+server framework with code-gen
+* [gRPC](https://github.com/grpc/grpc-go) - Google's RPC framework via protobufs
+* [graphql](https://github.com/99designs/gqlgen) - Declarative query language
+* [NATS](https://nats.io) - lightweight pub-sub
+
+
+## License
+
+Copyright (c) 2015-present [Peter Kieltyka](https://github.com/pkieltyka)
+
+Licensed under [MIT License](./LICENSE)
+
+[GoDoc]: https://pkg.go.dev/github.com/go-chi/chi?tab=versions
+[GoDoc Widget]: https://godoc.org/github.com/go-chi/chi?status.svg
+[Travis]: https://travis-ci.org/go-chi/chi
+[Travis Widget]: https://travis-ci.org/go-chi/chi.svg?branch=master
diff --git a/vendor/github.com/go-chi/chi/chain.go b/vendor/github.com/go-chi/chi/chain.go
new file mode 100644
index 0000000000..88e6846138
--- /dev/null
+++ b/vendor/github.com/go-chi/chi/chain.go
@@ -0,0 +1,49 @@
+package chi
+
+import "net/http"
+
+// Chain returns a Middlewares type from a slice of middleware handlers.
+func Chain(middlewares ...func(http.Handler) http.Handler) Middlewares {
+ return Middlewares(middlewares)
+}
+
+// Handler builds and returns a http.Handler from the chain of middlewares,
+// with `h http.Handler` as the final handler.
+func (mws Middlewares) Handler(h http.Handler) http.Handler {
+ return &ChainHandler{mws, h, chain(mws, h)}
+}
+
+// HandlerFunc builds and returns a http.Handler from the chain of middlewares,
+// with `h http.Handler` as the final handler.
+func (mws Middlewares) HandlerFunc(h http.HandlerFunc) http.Handler {
+ return &ChainHandler{mws, h, chain(mws, h)}
+}
+
+// ChainHandler is a http.Handler with support for handler composition and
+// execution.
+type ChainHandler struct {
+ Middlewares Middlewares
+ Endpoint http.Handler
+ chain http.Handler
+}
+
+func (c *ChainHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+ c.chain.ServeHTTP(w, r)
+}
+
+// chain builds a http.Handler composed of an inline middleware stack and endpoint
+// handler in the order they are passed.
+func chain(middlewares []func(http.Handler) http.Handler, endpoint http.Handler) http.Handler {
+ // Return ahead of time if there aren't any middlewares for the chain
+ if len(middlewares) == 0 {
+ return endpoint
+ }
+
+ // Wrap the end handler with the middleware chain
+ h := middlewares[len(middlewares)-1](endpoint)
+ for i := len(middlewares) - 2; i >= 0; i-- {
+ h = middlewares[i](h)
+ }
+
+ return h
+}
diff --git a/vendor/github.com/go-chi/chi/chi.go b/vendor/github.com/go-chi/chi/chi.go
new file mode 100644
index 0000000000..b7063dc297
--- /dev/null
+++ b/vendor/github.com/go-chi/chi/chi.go
@@ -0,0 +1,134 @@
+//
+// Package chi is a small, idiomatic and composable router for building HTTP services.
+//
+// chi requires Go 1.10 or newer.
+//
+// Example:
+// package main
+//
+// import (
+// "net/http"
+//
+// "github.com/go-chi/chi"
+// "github.com/go-chi/chi/middleware"
+// )
+//
+// func main() {
+// r := chi.NewRouter()
+// r.Use(middleware.Logger)
+// r.Use(middleware.Recoverer)
+//
+// r.Get("/", func(w http.ResponseWriter, r *http.Request) {
+// w.Write([]byte("root."))
+// })
+//
+// http.ListenAndServe(":3333", r)
+// }
+//
+// See github.com/go-chi/chi/_examples/ for more in-depth examples.
+//
+// URL patterns allow for easy matching of path components in HTTP
+// requests. The matching components can then be accessed using
+// chi.URLParam(). All patterns must begin with a slash.
+//
+// A simple named placeholder {name} matches any sequence of characters
+// up to the next / or the end of the URL. Trailing slashes on paths must
+// be handled explicitly.
+//
+// A placeholder with a name followed by a colon allows a regular
+// expression match, for example {number:\\d+}. The regular expression
+// syntax is Go's normal regexp RE2 syntax, except that regular expressions
+// including { or } are not supported, and / will never be
+// matched. An anonymous regexp pattern is allowed, using an empty string
+// before the colon in the placeholder, such as {:\\d+}
+//
+// The special placeholder of asterisk matches the rest of the requested
+// URL. Any trailing characters in the pattern are ignored. This is the only
+// placeholder which will match / characters.
+//
+// Examples:
+// "/user/{name}" matches "/user/jsmith" but not "/user/jsmith/info" or "/user/jsmith/"
+// "/user/{name}/info" matches "/user/jsmith/info"
+// "/page/*" matches "/page/intro/latest"
+// "/page/*/index" also matches "/page/intro/latest"
+// "/date/{yyyy:\\d\\d\\d\\d}/{mm:\\d\\d}/{dd:\\d\\d}" matches "/date/2017/04/01"
+//
+package chi
+
+import "net/http"
+
+// NewRouter returns a new Mux object that implements the Router interface.
+func NewRouter() *Mux {
+ return NewMux()
+}
+
+// Router consisting of the core routing methods used by chi's Mux,
+// using only the standard net/http.
+type Router interface {
+ http.Handler
+ Routes
+
+ // Use appends one or more middlewares onto the Router stack.
+ Use(middlewares ...func(http.Handler) http.Handler)
+
+ // With adds inline middlewares for an endpoint handler.
+ With(middlewares ...func(http.Handler) http.Handler) Router
+
+ // Group adds a new inline-Router along the current routing
+ // path, with a fresh middleware stack for the inline-Router.
+ Group(fn func(r Router)) Router
+
+ // Route mounts a sub-Router along a `pattern`` string.
+ Route(pattern string, fn func(r Router)) Router
+
+ // Mount attaches another http.Handler along ./pattern/*
+ Mount(pattern string, h http.Handler)
+
+ // Handle and HandleFunc adds routes for `pattern` that matches
+ // all HTTP methods.
+ Handle(pattern string, h http.Handler)
+ HandleFunc(pattern string, h http.HandlerFunc)
+
+ // Method and MethodFunc adds routes for `pattern` that matches
+ // the `method` HTTP method.
+ Method(method, pattern string, h http.Handler)
+ MethodFunc(method, pattern string, h http.HandlerFunc)
+
+ // HTTP-method routing along `pattern`
+ Connect(pattern string, h http.HandlerFunc)
+ Delete(pattern string, h http.HandlerFunc)
+ Get(pattern string, h http.HandlerFunc)
+ Head(pattern string, h http.HandlerFunc)
+ Options(pattern string, h http.HandlerFunc)
+ Patch(pattern string, h http.HandlerFunc)
+ Post(pattern string, h http.HandlerFunc)
+ Put(pattern string, h http.HandlerFunc)
+ Trace(pattern string, h http.HandlerFunc)
+
+ // NotFound defines a handler to respond whenever a route could
+ // not be found.
+ NotFound(h http.HandlerFunc)
+
+ // MethodNotAllowed defines a handler to respond whenever a method is
+ // not allowed.
+ MethodNotAllowed(h http.HandlerFunc)
+}
+
+// Routes interface adds two methods for router traversal, which is also
+// used by the `docgen` subpackage to generation documentation for Routers.
+type Routes interface {
+ // Routes returns the routing tree in an easily traversable structure.
+ Routes() []Route
+
+ // Middlewares returns the list of middlewares in use by the router.
+ Middlewares() Middlewares
+
+ // Match searches the routing tree for a handler that matches
+ // the method/path - similar to routing a http request, but without
+ // executing the handler thereafter.
+ Match(rctx *Context, method, path string) bool
+}
+
+// Middlewares type is a slice of standard middleware handlers with methods
+// to compose middleware chains and http.Handler's.
+type Middlewares []func(http.Handler) http.Handler
diff --git a/vendor/github.com/go-chi/chi/context.go b/vendor/github.com/go-chi/chi/context.go
new file mode 100644
index 0000000000..26c609ea2c
--- /dev/null
+++ b/vendor/github.com/go-chi/chi/context.go
@@ -0,0 +1,172 @@
+package chi
+
+import (
+ "context"
+ "net"
+ "net/http"
+ "strings"
+)
+
+// URLParam returns the url parameter from a http.Request object.
+func URLParam(r *http.Request, key string) string {
+ if rctx := RouteContext(r.Context()); rctx != nil {
+ return rctx.URLParam(key)
+ }
+ return ""
+}
+
+// URLParamFromCtx returns the url parameter from a http.Request Context.
+func URLParamFromCtx(ctx context.Context, key string) string {
+ if rctx := RouteContext(ctx); rctx != nil {
+ return rctx.URLParam(key)
+ }
+ return ""
+}
+
+// RouteContext returns chi's routing Context object from a
+// http.Request Context.
+func RouteContext(ctx context.Context) *Context {
+ val, _ := ctx.Value(RouteCtxKey).(*Context)
+ return val
+}
+
+// ServerBaseContext wraps an http.Handler to set the request context to the
+// `baseCtx`.
+func ServerBaseContext(baseCtx context.Context, h http.Handler) http.Handler {
+ fn := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+ ctx := r.Context()
+ baseCtx := baseCtx
+
+ // Copy over default net/http server context keys
+ if v, ok := ctx.Value(http.ServerContextKey).(*http.Server); ok {
+ baseCtx = context.WithValue(baseCtx, http.ServerContextKey, v)
+ }
+ if v, ok := ctx.Value(http.LocalAddrContextKey).(net.Addr); ok {
+ baseCtx = context.WithValue(baseCtx, http.LocalAddrContextKey, v)
+ }
+
+ h.ServeHTTP(w, r.WithContext(baseCtx))
+ })
+ return fn
+}
+
+// NewRouteContext returns a new routing Context object.
+func NewRouteContext() *Context {
+ return &Context{}
+}
+
+var (
+ // RouteCtxKey is the context.Context key to store the request context.
+ RouteCtxKey = &contextKey{"RouteContext"}
+)
+
+// Context is the default routing context set on the root node of a
+// request context to track route patterns, URL parameters and
+// an optional routing path.
+type Context struct {
+ Routes Routes
+
+ // Routing path/method override used during the route search.
+ // See Mux#routeHTTP method.
+ RoutePath string
+ RouteMethod string
+
+ // Routing pattern stack throughout the lifecycle of the request,
+ // across all connected routers. It is a record of all matching
+ // patterns across a stack of sub-routers.
+ RoutePatterns []string
+
+ // URLParams are the stack of routeParams captured during the
+ // routing lifecycle across a stack of sub-routers.
+ URLParams RouteParams
+
+ // The endpoint routing pattern that matched the request URI path
+ // or `RoutePath` of the current sub-router. This value will update
+ // during the lifecycle of a request passing through a stack of
+ // sub-routers.
+ routePattern string
+
+ // Route parameters matched for the current sub-router. It is
+ // intentionally unexported so it cant be tampered.
+ routeParams RouteParams
+
+ // methodNotAllowed hint
+ methodNotAllowed bool
+}
+
+// Reset a routing context to its initial state.
+func (x *Context) Reset() {
+ x.Routes = nil
+ x.RoutePath = ""
+ x.RouteMethod = ""
+ x.RoutePatterns = x.RoutePatterns[:0]
+ x.URLParams.Keys = x.URLParams.Keys[:0]
+ x.URLParams.Values = x.URLParams.Values[:0]
+
+ x.routePattern = ""
+ x.routeParams.Keys = x.routeParams.Keys[:0]
+ x.routeParams.Values = x.routeParams.Values[:0]
+ x.methodNotAllowed = false
+}
+
+// URLParam returns the corresponding URL parameter value from the request
+// routing context.
+func (x *Context) URLParam(key string) string {
+ for k := len(x.URLParams.Keys) - 1; k >= 0; k-- {
+ if x.URLParams.Keys[k] == key {
+ return x.URLParams.Values[k]
+ }
+ }
+ return ""
+}
+
+// RoutePattern builds the routing pattern string for the particular
+// request, at the particular point during routing. This means, the value
+// will change throughout the execution of a request in a router. That is
+// why its advised to only use this value after calling the next handler.
+//
+// For example,
+//
+// func Instrument(next http.Handler) http.Handler {
+// return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+// next.ServeHTTP(w, r)
+// routePattern := chi.RouteContext(r.Context()).RoutePattern()
+// measure(w, r, routePattern)
+// })
+// }
+func (x *Context) RoutePattern() string {
+ routePattern := strings.Join(x.RoutePatterns, "")
+ return replaceWildcards(routePattern)
+}
+
+// replaceWildcards takes a route pattern and recursively replaces all
+// occurrences of "/*/" to "/".
+func replaceWildcards(p string) string {
+ if strings.Contains(p, "/*/") {
+ return replaceWildcards(strings.Replace(p, "/*/", "/", -1))
+ }
+
+ return p
+}
+
+// RouteParams is a structure to track URL routing parameters efficiently.
+type RouteParams struct {
+ Keys, Values []string
+}
+
+// Add will append a URL parameter to the end of the route param
+func (s *RouteParams) Add(key, value string) {
+ s.Keys = append(s.Keys, key)
+ s.Values = append(s.Values, value)
+}
+
+// contextKey is a value for use with context.WithValue. It's used as
+// a pointer so it fits in an interface{} without allocation. This technique
+// for defining context keys was copied from Go 1.7's new use of context in net/http.
+type contextKey struct {
+ name string
+}
+
+func (k *contextKey) String() string {
+ return "chi context value " + k.name
+}
diff --git a/vendor/github.com/go-chi/chi/go.mod b/vendor/github.com/go-chi/chi/go.mod
new file mode 100644
index 0000000000..cffc732e6d
--- /dev/null
+++ b/vendor/github.com/go-chi/chi/go.mod
@@ -0,0 +1,3 @@
+module github.com/go-chi/chi
+
+go 1.15
diff --git a/vendor/github.com/go-chi/chi/middleware/basic_auth.go b/vendor/github.com/go-chi/chi/middleware/basic_auth.go
new file mode 100644
index 0000000000..87b2641a6a
--- /dev/null
+++ b/vendor/github.com/go-chi/chi/middleware/basic_auth.go
@@ -0,0 +1,32 @@
+package middleware
+
+import (
+ "fmt"
+ "net/http"
+)
+
+// BasicAuth implements a simple middleware handler for adding basic http auth to a route.
+func BasicAuth(realm string, creds map[string]string) func(next http.Handler) http.Handler {
+ return func(next http.Handler) http.Handler {
+ return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+ user, pass, ok := r.BasicAuth()
+ if !ok {
+ basicAuthFailed(w, realm)
+ return
+ }
+
+ credPass, credUserOk := creds[user]
+ if !credUserOk || pass != credPass {
+ basicAuthFailed(w, realm)
+ return
+ }
+
+ next.ServeHTTP(w, r)
+ })
+ }
+}
+
+func basicAuthFailed(w http.ResponseWriter, realm string) {
+ w.Header().Add("WWW-Authenticate", fmt.Sprintf(`Basic realm="%s"`, realm))
+ w.WriteHeader(http.StatusUnauthorized)
+}
diff --git a/vendor/github.com/go-chi/chi/middleware/compress.go b/vendor/github.com/go-chi/chi/middleware/compress.go
new file mode 100644
index 0000000000..2f40cc15af
--- /dev/null
+++ b/vendor/github.com/go-chi/chi/middleware/compress.go
@@ -0,0 +1,399 @@
+package middleware
+
+import (
+ "bufio"
+ "compress/flate"
+ "compress/gzip"
+ "errors"
+ "fmt"
+ "io"
+ "io/ioutil"
+ "net"
+ "net/http"
+ "strings"
+ "sync"
+)
+
+var defaultCompressibleContentTypes = []string{
+ "text/html",
+ "text/css",
+ "text/plain",
+ "text/javascript",
+ "application/javascript",
+ "application/x-javascript",
+ "application/json",
+ "application/atom+xml",
+ "application/rss+xml",
+ "image/svg+xml",
+}
+
+// Compress is a middleware that compresses response
+// body of a given content types to a data format based
+// on Accept-Encoding request header. It uses a given
+// compression level.
+//
+// NOTE: make sure to set the Content-Type header on your response
+// otherwise this middleware will not compress the response body. For ex, in
+// your handler you should set w.Header().Set("Content-Type", http.DetectContentType(yourBody))
+// or set it manually.
+//
+// Passing a compression level of 5 is sensible value
+func Compress(level int, types ...string) func(next http.Handler) http.Handler {
+ compressor := NewCompressor(level, types...)
+ return compressor.Handler
+}
+
+// Compressor represents a set of encoding configurations.
+type Compressor struct {
+ level int // The compression level.
+ // The mapping of encoder names to encoder functions.
+ encoders map[string]EncoderFunc
+ // The mapping of pooled encoders to pools.
+ pooledEncoders map[string]*sync.Pool
+ // The set of content types allowed to be compressed.
+ allowedTypes map[string]struct{}
+ allowedWildcards map[string]struct{}
+ // The list of encoders in order of decreasing precedence.
+ encodingPrecedence []string
+}
+
+// NewCompressor creates a new Compressor that will handle encoding responses.
+//
+// The level should be one of the ones defined in the flate package.
+// The types are the content types that are allowed to be compressed.
+func NewCompressor(level int, types ...string) *Compressor {
+ // If types are provided, set those as the allowed types. If none are
+ // provided, use the default list.
+ allowedTypes := make(map[string]struct{})
+ allowedWildcards := make(map[string]struct{})
+ if len(types) > 0 {
+ for _, t := range types {
+ if strings.Contains(strings.TrimSuffix(t, "/*"), "*") {
+ panic(fmt.Sprintf("middleware/compress: Unsupported content-type wildcard pattern '%s'. Only '/*' supported", t))
+ }
+ if strings.HasSuffix(t, "/*") {
+ allowedWildcards[strings.TrimSuffix(t, "/*")] = struct{}{}
+ } else {
+ allowedTypes[t] = struct{}{}
+ }
+ }
+ } else {
+ for _, t := range defaultCompressibleContentTypes {
+ allowedTypes[t] = struct{}{}
+ }
+ }
+
+ c := &Compressor{
+ level: level,
+ encoders: make(map[string]EncoderFunc),
+ pooledEncoders: make(map[string]*sync.Pool),
+ allowedTypes: allowedTypes,
+ allowedWildcards: allowedWildcards,
+ }
+
+ // Set the default encoders. The precedence order uses the reverse
+ // ordering that the encoders were added. This means adding new encoders
+ // will move them to the front of the order.
+ //
+ // TODO:
+ // lzma: Opera.
+ // sdch: Chrome, Android. Gzip output + dictionary header.
+ // br: Brotli, see https://github.com/go-chi/chi/pull/326
+
+ // HTTP 1.1 "deflate" (RFC 2616) stands for DEFLATE data (RFC 1951)
+ // wrapped with zlib (RFC 1950). The zlib wrapper uses Adler-32
+ // checksum compared to CRC-32 used in "gzip" and thus is faster.
+ //
+ // But.. some old browsers (MSIE, Safari 5.1) incorrectly expect
+ // raw DEFLATE data only, without the mentioned zlib wrapper.
+ // Because of this major confusion, most modern browsers try it
+ // both ways, first looking for zlib headers.
+ // Quote by Mark Adler: http://stackoverflow.com/a/9186091/385548
+ //
+ // The list of browsers having problems is quite big, see:
+ // http://zoompf.com/blog/2012/02/lose-the-wait-http-compression
+ // https://web.archive.org/web/20120321182910/http://www.vervestudios.co/projects/compression-tests/results
+ //
+ // That's why we prefer gzip over deflate. It's just more reliable
+ // and not significantly slower than gzip.
+ c.SetEncoder("deflate", encoderDeflate)
+
+ // TODO: Exception for old MSIE browsers that can't handle non-HTML?
+ // https://zoompf.com/blog/2012/02/lose-the-wait-http-compression
+ c.SetEncoder("gzip", encoderGzip)
+
+ // NOTE: Not implemented, intentionally:
+ // case "compress": // LZW. Deprecated.
+ // case "bzip2": // Too slow on-the-fly.
+ // case "zopfli": // Too slow on-the-fly.
+ // case "xz": // Too slow on-the-fly.
+ return c
+}
+
+// SetEncoder can be used to set the implementation of a compression algorithm.
+//
+// The encoding should be a standardised identifier. See:
+// https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Accept-Encoding
+//
+// For example, add the Brotli algortithm:
+//
+// import brotli_enc "gopkg.in/kothar/brotli-go.v0/enc"
+//
+// compressor := middleware.NewCompressor(5, "text/html")
+// compressor.SetEncoder("br", func(w http.ResponseWriter, level int) io.Writer {
+// params := brotli_enc.NewBrotliParams()
+// params.SetQuality(level)
+// return brotli_enc.NewBrotliWriter(params, w)
+// })
+func (c *Compressor) SetEncoder(encoding string, fn EncoderFunc) {
+ encoding = strings.ToLower(encoding)
+ if encoding == "" {
+ panic("the encoding can not be empty")
+ }
+ if fn == nil {
+ panic("attempted to set a nil encoder function")
+ }
+
+ // If we are adding a new encoder that is already registered, we have to
+ // clear that one out first.
+ if _, ok := c.pooledEncoders[encoding]; ok {
+ delete(c.pooledEncoders, encoding)
+ }
+ if _, ok := c.encoders[encoding]; ok {
+ delete(c.encoders, encoding)
+ }
+
+ // If the encoder supports Resetting (IoReseterWriter), then it can be pooled.
+ encoder := fn(ioutil.Discard, c.level)
+ if encoder != nil {
+ if _, ok := encoder.(ioResetterWriter); ok {
+ pool := &sync.Pool{
+ New: func() interface{} {
+ return fn(ioutil.Discard, c.level)
+ },
+ }
+ c.pooledEncoders[encoding] = pool
+ }
+ }
+ // If the encoder is not in the pooledEncoders, add it to the normal encoders.
+ if _, ok := c.pooledEncoders[encoding]; !ok {
+ c.encoders[encoding] = fn
+ }
+
+ for i, v := range c.encodingPrecedence {
+ if v == encoding {
+ c.encodingPrecedence = append(c.encodingPrecedence[:i], c.encodingPrecedence[i+1:]...)
+ }
+ }
+
+ c.encodingPrecedence = append([]string{encoding}, c.encodingPrecedence...)
+}
+
+// Handler returns a new middleware that will compress the response based on the
+// current Compressor.
+func (c *Compressor) Handler(next http.Handler) http.Handler {
+ return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+ encoder, encoding, cleanup := c.selectEncoder(r.Header, w)
+
+ cw := &compressResponseWriter{
+ ResponseWriter: w,
+ w: w,
+ contentTypes: c.allowedTypes,
+ contentWildcards: c.allowedWildcards,
+ encoding: encoding,
+ compressable: false, // determined in post-handler
+ }
+ if encoder != nil {
+ cw.w = encoder
+ }
+ // Re-add the encoder to the pool if applicable.
+ defer cleanup()
+ defer cw.Close()
+
+ next.ServeHTTP(cw, r)
+ })
+}
+
+// selectEncoder returns the encoder, the name of the encoder, and a closer function.
+func (c *Compressor) selectEncoder(h http.Header, w io.Writer) (io.Writer, string, func()) {
+ header := h.Get("Accept-Encoding")
+
+ // Parse the names of all accepted algorithms from the header.
+ accepted := strings.Split(strings.ToLower(header), ",")
+
+ // Find supported encoder by accepted list by precedence
+ for _, name := range c.encodingPrecedence {
+ if matchAcceptEncoding(accepted, name) {
+ if pool, ok := c.pooledEncoders[name]; ok {
+ encoder := pool.Get().(ioResetterWriter)
+ cleanup := func() {
+ pool.Put(encoder)
+ }
+ encoder.Reset(w)
+ return encoder, name, cleanup
+
+ }
+ if fn, ok := c.encoders[name]; ok {
+ return fn(w, c.level), name, func() {}
+ }
+ }
+
+ }
+
+ // No encoder found to match the accepted encoding
+ return nil, "", func() {}
+}
+
+func matchAcceptEncoding(accepted []string, encoding string) bool {
+ for _, v := range accepted {
+ if strings.Contains(v, encoding) {
+ return true
+ }
+ }
+ return false
+}
+
+// An EncoderFunc is a function that wraps the provided io.Writer with a
+// streaming compression algorithm and returns it.
+//
+// In case of failure, the function should return nil.
+type EncoderFunc func(w io.Writer, level int) io.Writer
+
+// Interface for types that allow resetting io.Writers.
+type ioResetterWriter interface {
+ io.Writer
+ Reset(w io.Writer)
+}
+
+type compressResponseWriter struct {
+ http.ResponseWriter
+
+ // The streaming encoder writer to be used if there is one. Otherwise,
+ // this is just the normal writer.
+ w io.Writer
+ encoding string
+ contentTypes map[string]struct{}
+ contentWildcards map[string]struct{}
+ wroteHeader bool
+ compressable bool
+}
+
+func (cw *compressResponseWriter) isCompressable() bool {
+ // Parse the first part of the Content-Type response header.
+ contentType := cw.Header().Get("Content-Type")
+ if idx := strings.Index(contentType, ";"); idx >= 0 {
+ contentType = contentType[0:idx]
+ }
+
+ // Is the content type compressable?
+ if _, ok := cw.contentTypes[contentType]; ok {
+ return true
+ }
+ if idx := strings.Index(contentType, "/"); idx > 0 {
+ contentType = contentType[0:idx]
+ _, ok := cw.contentWildcards[contentType]
+ return ok
+ }
+ return false
+}
+
+func (cw *compressResponseWriter) WriteHeader(code int) {
+ if cw.wroteHeader {
+ cw.ResponseWriter.WriteHeader(code) // Allow multiple calls to propagate.
+ return
+ }
+ cw.wroteHeader = true
+ defer cw.ResponseWriter.WriteHeader(code)
+
+ // Already compressed data?
+ if cw.Header().Get("Content-Encoding") != "" {
+ return
+ }
+
+ if !cw.isCompressable() {
+ cw.compressable = false
+ return
+ }
+
+ if cw.encoding != "" {
+ cw.compressable = true
+ cw.Header().Set("Content-Encoding", cw.encoding)
+ cw.Header().Set("Vary", "Accept-Encoding")
+
+ // The content-length after compression is unknown
+ cw.Header().Del("Content-Length")
+ }
+}
+
+func (cw *compressResponseWriter) Write(p []byte) (int, error) {
+ if !cw.wroteHeader {
+ cw.WriteHeader(http.StatusOK)
+ }
+
+ return cw.writer().Write(p)
+}
+
+func (cw *compressResponseWriter) writer() io.Writer {
+ if cw.compressable {
+ return cw.w
+ } else {
+ return cw.ResponseWriter
+ }
+}
+
+type compressFlusher interface {
+ Flush() error
+}
+
+func (cw *compressResponseWriter) Flush() {
+ if f, ok := cw.writer().(http.Flusher); ok {
+ f.Flush()
+ }
+ // If the underlying writer has a compression flush signature,
+ // call this Flush() method instead
+ if f, ok := cw.writer().(compressFlusher); ok {
+ f.Flush()
+
+ // Also flush the underlying response writer
+ if f, ok := cw.ResponseWriter.(http.Flusher); ok {
+ f.Flush()
+ }
+ }
+}
+
+func (cw *compressResponseWriter) Hijack() (net.Conn, *bufio.ReadWriter, error) {
+ if hj, ok := cw.writer().(http.Hijacker); ok {
+ return hj.Hijack()
+ }
+ return nil, nil, errors.New("chi/middleware: http.Hijacker is unavailable on the writer")
+}
+
+func (cw *compressResponseWriter) Push(target string, opts *http.PushOptions) error {
+ if ps, ok := cw.writer().(http.Pusher); ok {
+ return ps.Push(target, opts)
+ }
+ return errors.New("chi/middleware: http.Pusher is unavailable on the writer")
+}
+
+func (cw *compressResponseWriter) Close() error {
+ if c, ok := cw.writer().(io.WriteCloser); ok {
+ return c.Close()
+ }
+ return errors.New("chi/middleware: io.WriteCloser is unavailable on the writer")
+}
+
+func encoderGzip(w io.Writer, level int) io.Writer {
+ gw, err := gzip.NewWriterLevel(w, level)
+ if err != nil {
+ return nil
+ }
+ return gw
+}
+
+func encoderDeflate(w io.Writer, level int) io.Writer {
+ dw, err := flate.NewWriter(w, level)
+ if err != nil {
+ return nil
+ }
+ return dw
+}
diff --git a/vendor/github.com/go-chi/chi/middleware/content_charset.go b/vendor/github.com/go-chi/chi/middleware/content_charset.go
new file mode 100644
index 0000000000..07b5ce6f66
--- /dev/null
+++ b/vendor/github.com/go-chi/chi/middleware/content_charset.go
@@ -0,0 +1,51 @@
+package middleware
+
+import (
+ "net/http"
+ "strings"
+)
+
+// ContentCharset generates a handler that writes a 415 Unsupported Media Type response if none of the charsets match.
+// An empty charset will allow requests with no Content-Type header or no specified charset.
+func ContentCharset(charsets ...string) func(next http.Handler) http.Handler {
+ for i, c := range charsets {
+ charsets[i] = strings.ToLower(c)
+ }
+
+ return func(next http.Handler) http.Handler {
+ return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+ if !contentEncoding(r.Header.Get("Content-Type"), charsets...) {
+ w.WriteHeader(http.StatusUnsupportedMediaType)
+ return
+ }
+
+ next.ServeHTTP(w, r)
+ })
+ }
+}
+
+// Check the content encoding against a list of acceptable values.
+func contentEncoding(ce string, charsets ...string) bool {
+ _, ce = split(strings.ToLower(ce), ";")
+ _, ce = split(ce, "charset=")
+ ce, _ = split(ce, ";")
+ for _, c := range charsets {
+ if ce == c {
+ return true
+ }
+ }
+
+ return false
+}
+
+// Split a string in two parts, cleaning any whitespace.
+func split(str, sep string) (string, string) {
+ var a, b string
+ var parts = strings.SplitN(str, sep, 2)
+ a = strings.TrimSpace(parts[0])
+ if len(parts) == 2 {
+ b = strings.TrimSpace(parts[1])
+ }
+
+ return a, b
+}
diff --git a/vendor/github.com/go-chi/chi/middleware/content_encoding.go b/vendor/github.com/go-chi/chi/middleware/content_encoding.go
new file mode 100644
index 0000000000..e0b9ccc08a
--- /dev/null
+++ b/vendor/github.com/go-chi/chi/middleware/content_encoding.go
@@ -0,0 +1,34 @@
+package middleware
+
+import (
+ "net/http"
+ "strings"
+)
+
+// AllowContentEncoding enforces a whitelist of request Content-Encoding otherwise responds
+// with a 415 Unsupported Media Type status.
+func AllowContentEncoding(contentEncoding ...string) func(next http.Handler) http.Handler {
+ allowedEncodings := make(map[string]struct{}, len(contentEncoding))
+ for _, encoding := range contentEncoding {
+ allowedEncodings[strings.TrimSpace(strings.ToLower(encoding))] = struct{}{}
+ }
+ return func(next http.Handler) http.Handler {
+ fn := func(w http.ResponseWriter, r *http.Request) {
+ requestEncodings := r.Header["Content-Encoding"]
+ // skip check for empty content body or no Content-Encoding
+ if r.ContentLength == 0 {
+ next.ServeHTTP(w, r)
+ return
+ }
+ // All encodings in the request must be allowed
+ for _, encoding := range requestEncodings {
+ if _, ok := allowedEncodings[strings.TrimSpace(strings.ToLower(encoding))]; !ok {
+ w.WriteHeader(http.StatusUnsupportedMediaType)
+ return
+ }
+ }
+ next.ServeHTTP(w, r)
+ }
+ return http.HandlerFunc(fn)
+ }
+}
diff --git a/vendor/github.com/go-chi/chi/middleware/content_type.go b/vendor/github.com/go-chi/chi/middleware/content_type.go
new file mode 100644
index 0000000000..ee4957874f
--- /dev/null
+++ b/vendor/github.com/go-chi/chi/middleware/content_type.go
@@ -0,0 +1,51 @@
+package middleware
+
+import (
+ "net/http"
+ "strings"
+)
+
+// SetHeader is a convenience handler to set a response header key/value
+func SetHeader(key, value string) func(next http.Handler) http.Handler {
+ return func(next http.Handler) http.Handler {
+ fn := func(w http.ResponseWriter, r *http.Request) {
+ w.Header().Set(key, value)
+ next.ServeHTTP(w, r)
+ }
+ return http.HandlerFunc(fn)
+ }
+}
+
+// AllowContentType enforces a whitelist of request Content-Types otherwise responds
+// with a 415 Unsupported Media Type status.
+func AllowContentType(contentTypes ...string) func(next http.Handler) http.Handler {
+ cT := []string{}
+ for _, t := range contentTypes {
+ cT = append(cT, strings.ToLower(t))
+ }
+
+ return func(next http.Handler) http.Handler {
+ fn := func(w http.ResponseWriter, r *http.Request) {
+ if r.ContentLength == 0 {
+ // skip check for empty content body
+ next.ServeHTTP(w, r)
+ return
+ }
+
+ s := strings.ToLower(strings.TrimSpace(r.Header.Get("Content-Type")))
+ if i := strings.Index(s, ";"); i > -1 {
+ s = s[0:i]
+ }
+
+ for _, t := range cT {
+ if t == s {
+ next.ServeHTTP(w, r)
+ return
+ }
+ }
+
+ w.WriteHeader(http.StatusUnsupportedMediaType)
+ }
+ return http.HandlerFunc(fn)
+ }
+}
diff --git a/vendor/github.com/go-chi/chi/middleware/get_head.go b/vendor/github.com/go-chi/chi/middleware/get_head.go
new file mode 100644
index 0000000000..86068a96db
--- /dev/null
+++ b/vendor/github.com/go-chi/chi/middleware/get_head.go
@@ -0,0 +1,39 @@
+package middleware
+
+import (
+ "net/http"
+
+ "github.com/go-chi/chi"
+)
+
+// GetHead automatically route undefined HEAD requests to GET handlers.
+func GetHead(next http.Handler) http.Handler {
+ return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+ if r.Method == "HEAD" {
+ rctx := chi.RouteContext(r.Context())
+ routePath := rctx.RoutePath
+ if routePath == "" {
+ if r.URL.RawPath != "" {
+ routePath = r.URL.RawPath
+ } else {
+ routePath = r.URL.Path
+ }
+ }
+
+ // Temporary routing context to look-ahead before routing the request
+ tctx := chi.NewRouteContext()
+
+ // Attempt to find a HEAD handler for the routing path, if not found, traverse
+ // the router as through its a GET route, but proceed with the request
+ // with the HEAD method.
+ if !rctx.Routes.Match(tctx, "HEAD", routePath) {
+ rctx.RouteMethod = "GET"
+ rctx.RoutePath = routePath
+ next.ServeHTTP(w, r)
+ return
+ }
+ }
+
+ next.ServeHTTP(w, r)
+ })
+}
diff --git a/vendor/github.com/go-chi/chi/middleware/heartbeat.go b/vendor/github.com/go-chi/chi/middleware/heartbeat.go
new file mode 100644
index 0000000000..fe822fb536
--- /dev/null
+++ b/vendor/github.com/go-chi/chi/middleware/heartbeat.go
@@ -0,0 +1,26 @@
+package middleware
+
+import (
+ "net/http"
+ "strings"
+)
+
+// Heartbeat endpoint middleware useful to setting up a path like
+// `/ping` that load balancers or uptime testing external services
+// can make a request before hitting any routes. It's also convenient
+// to place this above ACL middlewares as well.
+func Heartbeat(endpoint string) func(http.Handler) http.Handler {
+ f := func(h http.Handler) http.Handler {
+ fn := func(w http.ResponseWriter, r *http.Request) {
+ if r.Method == "GET" && strings.EqualFold(r.URL.Path, endpoint) {
+ w.Header().Set("Content-Type", "text/plain")
+ w.WriteHeader(http.StatusOK)
+ w.Write([]byte("."))
+ return
+ }
+ h.ServeHTTP(w, r)
+ }
+ return http.HandlerFunc(fn)
+ }
+ return f
+}
diff --git a/vendor/github.com/go-chi/chi/middleware/logger.go b/vendor/github.com/go-chi/chi/middleware/logger.go
new file mode 100644
index 0000000000..158a6a3905
--- /dev/null
+++ b/vendor/github.com/go-chi/chi/middleware/logger.go
@@ -0,0 +1,155 @@
+package middleware
+
+import (
+ "bytes"
+ "context"
+ "log"
+ "net/http"
+ "os"
+ "time"
+)
+
+var (
+ // LogEntryCtxKey is the context.Context key to store the request log entry.
+ LogEntryCtxKey = &contextKey{"LogEntry"}
+
+ // DefaultLogger is called by the Logger middleware handler to log each request.
+ // Its made a package-level variable so that it can be reconfigured for custom
+ // logging configurations.
+ DefaultLogger = RequestLogger(&DefaultLogFormatter{Logger: log.New(os.Stdout, "", log.LstdFlags), NoColor: false})
+)
+
+// Logger is a middleware that logs the start and end of each request, along
+// with some useful data about what was requested, what the response status was,
+// and how long it took to return. When standard output is a TTY, Logger will
+// print in color, otherwise it will print in black and white. Logger prints a
+// request ID if one is provided.
+//
+// Alternatively, look at https://github.com/goware/httplog for a more in-depth
+// http logger with structured logging support.
+func Logger(next http.Handler) http.Handler {
+ return DefaultLogger(next)
+}
+
+// RequestLogger returns a logger handler using a custom LogFormatter.
+func RequestLogger(f LogFormatter) func(next http.Handler) http.Handler {
+ return func(next http.Handler) http.Handler {
+ fn := func(w http.ResponseWriter, r *http.Request) {
+ entry := f.NewLogEntry(r)
+ ww := NewWrapResponseWriter(w, r.ProtoMajor)
+
+ t1 := time.Now()
+ defer func() {
+ entry.Write(ww.Status(), ww.BytesWritten(), ww.Header(), time.Since(t1), nil)
+ }()
+
+ next.ServeHTTP(ww, WithLogEntry(r, entry))
+ }
+ return http.HandlerFunc(fn)
+ }
+}
+
+// LogFormatter initiates the beginning of a new LogEntry per request.
+// See DefaultLogFormatter for an example implementation.
+type LogFormatter interface {
+ NewLogEntry(r *http.Request) LogEntry
+}
+
+// LogEntry records the final log when a request completes.
+// See defaultLogEntry for an example implementation.
+type LogEntry interface {
+ Write(status, bytes int, header http.Header, elapsed time.Duration, extra interface{})
+ Panic(v interface{}, stack []byte)
+}
+
+// GetLogEntry returns the in-context LogEntry for a request.
+func GetLogEntry(r *http.Request) LogEntry {
+ entry, _ := r.Context().Value(LogEntryCtxKey).(LogEntry)
+ return entry
+}
+
+// WithLogEntry sets the in-context LogEntry for a request.
+func WithLogEntry(r *http.Request, entry LogEntry) *http.Request {
+ r = r.WithContext(context.WithValue(r.Context(), LogEntryCtxKey, entry))
+ return r
+}
+
+// LoggerInterface accepts printing to stdlib logger or compatible logger.
+type LoggerInterface interface {
+ Print(v ...interface{})
+}
+
+// DefaultLogFormatter is a simple logger that implements a LogFormatter.
+type DefaultLogFormatter struct {
+ Logger LoggerInterface
+ NoColor bool
+}
+
+// NewLogEntry creates a new LogEntry for the request.
+func (l *DefaultLogFormatter) NewLogEntry(r *http.Request) LogEntry {
+ useColor := !l.NoColor
+ entry := &defaultLogEntry{
+ DefaultLogFormatter: l,
+ request: r,
+ buf: &bytes.Buffer{},
+ useColor: useColor,
+ }
+
+ reqID := GetReqID(r.Context())
+ if reqID != "" {
+ cW(entry.buf, useColor, nYellow, "[%s] ", reqID)
+ }
+ cW(entry.buf, useColor, nCyan, "\"")
+ cW(entry.buf, useColor, bMagenta, "%s ", r.Method)
+
+ scheme := "http"
+ if r.TLS != nil {
+ scheme = "https"
+ }
+ cW(entry.buf, useColor, nCyan, "%s://%s%s %s\" ", scheme, r.Host, r.RequestURI, r.Proto)
+
+ entry.buf.WriteString("from ")
+ entry.buf.WriteString(r.RemoteAddr)
+ entry.buf.WriteString(" - ")
+
+ return entry
+}
+
+type defaultLogEntry struct {
+ *DefaultLogFormatter
+ request *http.Request
+ buf *bytes.Buffer
+ useColor bool
+}
+
+func (l *defaultLogEntry) Write(status, bytes int, header http.Header, elapsed time.Duration, extra interface{}) {
+ switch {
+ case status < 200:
+ cW(l.buf, l.useColor, bBlue, "%03d", status)
+ case status < 300:
+ cW(l.buf, l.useColor, bGreen, "%03d", status)
+ case status < 400:
+ cW(l.buf, l.useColor, bCyan, "%03d", status)
+ case status < 500:
+ cW(l.buf, l.useColor, bYellow, "%03d", status)
+ default:
+ cW(l.buf, l.useColor, bRed, "%03d", status)
+ }
+
+ cW(l.buf, l.useColor, bBlue, " %dB", bytes)
+
+ l.buf.WriteString(" in ")
+ if elapsed < 500*time.Millisecond {
+ cW(l.buf, l.useColor, nGreen, "%s", elapsed)
+ } else if elapsed < 5*time.Second {
+ cW(l.buf, l.useColor, nYellow, "%s", elapsed)
+ } else {
+ cW(l.buf, l.useColor, nRed, "%s", elapsed)
+ }
+
+ l.Logger.Print(l.buf.String())
+}
+
+func (l *defaultLogEntry) Panic(v interface{}, stack []byte) {
+ PrintPrettyStack(v)
+}
diff --git a/vendor/github.com/go-chi/chi/middleware/middleware.go b/vendor/github.com/go-chi/chi/middleware/middleware.go
new file mode 100644
index 0000000000..cc371e00a8
--- /dev/null
+++ b/vendor/github.com/go-chi/chi/middleware/middleware.go
@@ -0,0 +1,23 @@
+package middleware
+
+import "net/http"
+
+// New will create a new middleware handler from a http.Handler.
+func New(h http.Handler) func(next http.Handler) http.Handler {
+ return func(next http.Handler) http.Handler {
+ return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+ h.ServeHTTP(w, r)
+ })
+ }
+}
+
+// contextKey is a value for use with context.WithValue. It's used as
+// a pointer so it fits in an interface{} without allocation. This technique
+// for defining context keys was copied from Go 1.7's new use of context in net/http.
+type contextKey struct {
+ name string
+}
+
+func (k *contextKey) String() string {
+ return "chi/middleware context value " + k.name
+}
diff --git a/vendor/github.com/go-chi/chi/middleware/nocache.go b/vendor/github.com/go-chi/chi/middleware/nocache.go
new file mode 100644
index 0000000000..2412829e1b
--- /dev/null
+++ b/vendor/github.com/go-chi/chi/middleware/nocache.go
@@ -0,0 +1,58 @@
+package middleware
+
+// Ported from Goji's middleware, source:
+// https://github.com/zenazn/goji/tree/master/web/middleware
+
+import (
+ "net/http"
+ "time"
+)
+
+// Unix epoch time
+var epoch = time.Unix(0, 0).Format(time.RFC1123)
+
+// Taken from https://github.com/mytrile/nocache
+var noCacheHeaders = map[string]string{
+ "Expires": epoch,
+ "Cache-Control": "no-cache, no-store, no-transform, must-revalidate, private, max-age=0",
+ "Pragma": "no-cache",
+ "X-Accel-Expires": "0",
+}
+
+var etagHeaders = []string{
+ "ETag",
+ "If-Modified-Since",
+ "If-Match",
+ "If-None-Match",
+ "If-Range",
+ "If-Unmodified-Since",
+}
+
+// NoCache is a simple piece of middleware that sets a number of HTTP headers to prevent
+// a router (or subrouter) from being cached by an upstream proxy and/or client.
+//
+// As per http://wiki.nginx.org/HttpProxyModule - NoCache sets:
+// Expires: Thu, 01 Jan 1970 00:00:00 UTC
+// Cache-Control: no-cache, private, max-age=0
+// X-Accel-Expires: 0
+// Pragma: no-cache (for HTTP/1.0 proxies/clients)
+func NoCache(h http.Handler) http.Handler {
+ fn := func(w http.ResponseWriter, r *http.Request) {
+
+ // Delete any ETag headers that may have been set
+ for _, v := range etagHeaders {
+ if r.Header.Get(v) != "" {
+ r.Header.Del(v)
+ }
+ }
+
+ // Set our NoCache headers
+ for k, v := range noCacheHeaders {
+ w.Header().Set(k, v)
+ }
+
+ h.ServeHTTP(w, r)
+ }
+
+ return http.HandlerFunc(fn)
+}
diff --git a/vendor/github.com/go-chi/chi/middleware/profiler.go b/vendor/github.com/go-chi/chi/middleware/profiler.go
new file mode 100644
index 0000000000..1d44b8259a
--- /dev/null
+++ b/vendor/github.com/go-chi/chi/middleware/profiler.go
@@ -0,0 +1,55 @@
+package middleware
+
+import (
+ "expvar"
+ "fmt"
+ "net/http"
+ "net/http/pprof"
+
+ "github.com/go-chi/chi"
+)
+
+// Profiler is a convenient subrouter used for mounting net/http/pprof. ie.
+//
+// func MyService() http.Handler {
+// r := chi.NewRouter()
+// // ..middlewares
+// r.Mount("/debug", middleware.Profiler())
+// // ..routes
+// return r
+// }
+func Profiler() http.Handler {
+ r := chi.NewRouter()
+ r.Use(NoCache)
+
+ r.Get("/", func(w http.ResponseWriter, r *http.Request) {
+ http.Redirect(w, r, r.RequestURI+"/pprof/", 301)
+ })
+ r.HandleFunc("/pprof", func(w http.ResponseWriter, r *http.Request) {
+ http.Redirect(w, r, r.RequestURI+"/", 301)
+ })
+
+ r.HandleFunc("/pprof/*", pprof.Index)
+ r.HandleFunc("/pprof/cmdline", pprof.Cmdline)
+ r.HandleFunc("/pprof/profile", pprof.Profile)
+ r.HandleFunc("/pprof/symbol", pprof.Symbol)
+ r.HandleFunc("/pprof/trace", pprof.Trace)
+ r.HandleFunc("/vars", expVars)
+
+ return r
+}
+
+// Replicated from expvar.go as not public.
+func expVars(w http.ResponseWriter, r *http.Request) {
+ first := true
+ w.Header().Set("Content-Type", "application/json")
+ fmt.Fprintf(w, "{\n")
+ expvar.Do(func(kv expvar.KeyValue) {
+ if !first {
+ fmt.Fprintf(w, ",\n")
+ }
+ first = false
+ fmt.Fprintf(w, "%q: %s", kv.Key, kv.Value)
+ })
+ fmt.Fprintf(w, "\n}\n")
+}
diff --git a/vendor/github.com/go-chi/chi/middleware/realip.go b/vendor/github.com/go-chi/chi/middleware/realip.go
new file mode 100644
index 0000000000..72db6ca9f5
--- /dev/null
+++ b/vendor/github.com/go-chi/chi/middleware/realip.go
@@ -0,0 +1,54 @@
+package middleware
+
+// Ported from Goji's middleware, source:
+// https://github.com/zenazn/goji/tree/master/web/middleware
+
+import (
+ "net/http"
+ "strings"
+)
+
+var xForwardedFor = http.CanonicalHeaderKey("X-Forwarded-For")
+var xRealIP = http.CanonicalHeaderKey("X-Real-IP")
+
+// RealIP is a middleware that sets a http.Request's RemoteAddr to the results
+// of parsing either the X-Forwarded-For header or the X-Real-IP header (in that
+// order).
+//
+// This middleware should be inserted fairly early in the middleware stack to
+// ensure that subsequent layers (e.g., request loggers) which examine the
+// RemoteAddr will see the intended value.
+//
+// You should only use this middleware if you can trust the headers passed to
+// you (in particular, the two headers this middleware uses), for example
+// because you have placed a reverse proxy like HAProxy or nginx in front of
+// chi. If your reverse proxies are configured to pass along arbitrary header
+// values from the client, or if you use this middleware without a reverse
+// proxy, malicious clients will be able to make you very sad (or, depending on
+// how you're using RemoteAddr, vulnerable to an attack of some sort).
+func RealIP(h http.Handler) http.Handler {
+ fn := func(w http.ResponseWriter, r *http.Request) {
+ if rip := realIP(r); rip != "" {
+ r.RemoteAddr = rip
+ }
+ h.ServeHTTP(w, r)
+ }
+
+ return http.HandlerFunc(fn)
+}
+
+func realIP(r *http.Request) string {
+ var ip string
+
+ if xrip := r.Header.Get(xRealIP); xrip != "" {
+ ip = xrip
+ } else if xff := r.Header.Get(xForwardedFor); xff != "" {
+ i := strings.Index(xff, ", ")
+ if i == -1 {
+ i = len(xff)
+ }
+ ip = xff[:i]
+ }
+
+ return ip
+}
diff --git a/vendor/github.com/go-chi/chi/middleware/recoverer.go b/vendor/github.com/go-chi/chi/middleware/recoverer.go
new file mode 100644
index 0000000000..785b18c52b
--- /dev/null
+++ b/vendor/github.com/go-chi/chi/middleware/recoverer.go
@@ -0,0 +1,192 @@
+package middleware
+
+// The original work was derived from Goji's middleware, source:
+// https://github.com/zenazn/goji/tree/master/web/middleware
+
+import (
+ "bytes"
+ "errors"
+ "fmt"
+ "net/http"
+ "os"
+ "runtime/debug"
+ "strings"
+)
+
+// Recoverer is a middleware that recovers from panics, logs the panic (and a
+// backtrace), and returns a HTTP 500 (Internal Server Error) status if
+// possible. Recoverer prints a request ID if one is provided.
+//
+// Alternatively, look at https://github.com/pressly/lg middleware pkgs.
+func Recoverer(next http.Handler) http.Handler {
+ fn := func(w http.ResponseWriter, r *http.Request) {
+ defer func() {
+ if rvr := recover(); rvr != nil && rvr != http.ErrAbortHandler {
+
+ logEntry := GetLogEntry(r)
+ if logEntry != nil {
+ logEntry.Panic(rvr, debug.Stack())
+ } else {
+ PrintPrettyStack(rvr)
+ }
+
+ w.WriteHeader(http.StatusInternalServerError)
+ }
+ }()
+
+ next.ServeHTTP(w, r)
+ }
+
+ return http.HandlerFunc(fn)
+}
+
+func PrintPrettyStack(rvr interface{}) {
+ debugStack := debug.Stack()
+ s := prettyStack{}
+ out, err := s.parse(debugStack, rvr)
+ if err == nil {
+ os.Stderr.Write(out)
+ } else {
+ // print stdlib output as a fallback
+ os.Stderr.Write(debugStack)
+ }
+}
+
+type prettyStack struct {
+}
+
+func (s prettyStack) parse(debugStack []byte, rvr interface{}) ([]byte, error) {
+ var err error
+ useColor := true
+ buf := &bytes.Buffer{}
+
+ cW(buf, false, bRed, "\n")
+ cW(buf, useColor, bCyan, " panic: ")
+ cW(buf, useColor, bBlue, "%v", rvr)
+ cW(buf, false, bWhite, "\n \n")
+
+ // process debug stack info
+ stack := strings.Split(string(debugStack), "\n")
+ lines := []string{}
+
+ // locate panic line, as we may have nested panics
+ for i := len(stack) - 1; i > 0; i-- {
+ lines = append(lines, stack[i])
+ if strings.HasPrefix(stack[i], "panic(0x") {
+ lines = lines[0 : len(lines)-2] // remove boilerplate
+ break
+ }
+ }
+
+ // reverse
+ for i := len(lines)/2 - 1; i >= 0; i-- {
+ opp := len(lines) - 1 - i
+ lines[i], lines[opp] = lines[opp], lines[i]
+ }
+
+ // decorate
+ for i, line := range lines {
+ lines[i], err = s.decorateLine(line, useColor, i)
+ if err != nil {
+ return nil, err
+ }
+ }
+
+ for _, l := range lines {
+ fmt.Fprintf(buf, "%s", l)
+ }
+ return buf.Bytes(), nil
+}
+
+func (s prettyStack) decorateLine(line string, useColor bool, num int) (string, error) {
+ line = strings.TrimSpace(line)
+ if strings.HasPrefix(line, "\t") || strings.Contains(line, ".go:") {
+ return s.decorateSourceLine(line, useColor, num)
+ } else if strings.HasSuffix(line, ")") {
+ return s.decorateFuncCallLine(line, useColor, num)
+ } else {
+ if strings.HasPrefix(line, "\t") {
+ return strings.Replace(line, "\t", " ", 1), nil
+ } else {
+ return fmt.Sprintf(" %s\n", line), nil
+ }
+ }
+}
+
+func (s prettyStack) decorateFuncCallLine(line string, useColor bool, num int) (string, error) {
+ idx := strings.LastIndex(line, "(")
+ if idx < 0 {
+ return "", errors.New("not a func call line")
+ }
+
+ buf := &bytes.Buffer{}
+ pkg := line[0:idx]
+ // addr := line[idx:]
+ method := ""
+
+ idx = strings.LastIndex(pkg, string(os.PathSeparator))
+ if idx < 0 {
+ idx = strings.Index(pkg, ".")
+ method = pkg[idx:]
+ pkg = pkg[0:idx]
+ } else {
+ method = pkg[idx+1:]
+ pkg = pkg[0 : idx+1]
+ idx = strings.Index(method, ".")
+ pkg += method[0:idx]
+ method = method[idx:]
+ }
+ pkgColor := nYellow
+ methodColor := bGreen
+
+ if num == 0 {
+ cW(buf, useColor, bRed, " -> ")
+ pkgColor = bMagenta
+ methodColor = bRed
+ } else {
+ cW(buf, useColor, bWhite, " ")
+ }
+ cW(buf, useColor, pkgColor, "%s", pkg)
+ cW(buf, useColor, methodColor, "%s\n", method)
+ // cW(buf, useColor, nBlack, "%s", addr)
+ return buf.String(), nil
+}
+
+func (s prettyStack) decorateSourceLine(line string, useColor bool, num int) (string, error) {
+ idx := strings.LastIndex(line, ".go:")
+ if idx < 0 {
+ return "", errors.New("not a source line")
+ }
+
+ buf := &bytes.Buffer{}
+ path := line[0 : idx+3]
+ lineno := line[idx+3:]
+
+ idx = strings.LastIndex(path, string(os.PathSeparator))
+ dir := path[0 : idx+1]
+ file := path[idx+1:]
+
+ idx = strings.Index(lineno, " ")
+ if idx > 0 {
+ lineno = lineno[0:idx]
+ }
+ fileColor := bCyan
+ lineColor := bGreen
+
+ if num == 1 {
+ cW(buf, useColor, bRed, " -> ")
+ fileColor = bRed
+ lineColor = bMagenta
+ } else {
+ cW(buf, false, bWhite, " ")
+ }
+ cW(buf, useColor, bWhite, "%s", dir)
+ cW(buf, useColor, fileColor, "%s", file)
+ cW(buf, useColor, lineColor, "%s", lineno)
+ if num == 1 {
+ cW(buf, false, bWhite, "\n")
+ }
+ cW(buf, false, bWhite, "\n")
+
+ return buf.String(), nil
+}
diff --git a/vendor/github.com/go-chi/chi/middleware/request_id.go b/vendor/github.com/go-chi/chi/middleware/request_id.go
new file mode 100644
index 0000000000..4903ecc214
--- /dev/null
+++ b/vendor/github.com/go-chi/chi/middleware/request_id.go
@@ -0,0 +1,96 @@
+package middleware
+
+// Ported from Goji's middleware, source:
+// https://github.com/zenazn/goji/tree/master/web/middleware
+
+import (
+ "context"
+ "crypto/rand"
+ "encoding/base64"
+ "fmt"
+ "net/http"
+ "os"
+ "strings"
+ "sync/atomic"
+)
+
+// Key to use when setting the request ID.
+type ctxKeyRequestID int
+
+// RequestIDKey is the key that holds the unique request ID in a request context.
+const RequestIDKey ctxKeyRequestID = 0
+
+// RequestIDHeader is the name of the HTTP Header which contains the request id.
+// Exported so that it can be changed by developers
+var RequestIDHeader = "X-Request-Id"
+
+var prefix string
+var reqid uint64
+
+// A quick note on the statistics here: we're trying to calculate the chance that
+// two randomly generated base62 prefixes will collide. We use the formula from
+// http://en.wikipedia.org/wiki/Birthday_problem
+//
+// P[m, n] \approx 1 - e^{-m^2/2n}
+//
+// We ballpark an upper bound for $m$ by imagining (for whatever reason) a server
+// that restarts every second over 10 years, for $m = 86400 * 365 * 10 = 315360000$
+//
+// For a $k$ character base-62 identifier, we have $n(k) = 62^k$
+//
+// Plugging this in, we find $P[m, n(10)] \approx 5.75%$, which is good enough for
+// our purposes, and is surely more than anyone would ever need in practice -- a
+// process that is rebooted a handful of times a day for a hundred years has less
+// than a millionth of a percent chance of generating two colliding IDs.
+
+func init() {
+ hostname, err := os.Hostname()
+ if hostname == "" || err != nil {
+ hostname = "localhost"
+ }
+ var buf [12]byte
+ var b64 string
+ for len(b64) < 10 {
+ rand.Read(buf[:])
+ b64 = base64.StdEncoding.EncodeToString(buf[:])
+ b64 = strings.NewReplacer("+", "", "/", "").Replace(b64)
+ }
+
+ prefix = fmt.Sprintf("%s/%s", hostname, b64[0:10])
+}
+
+// RequestID is a middleware that injects a request ID into the context of each
+// request. A request ID is a string of the form "host.example.com/random-0001",
+// where "random" is a base62 random string that uniquely identifies this go
+// process, and where the last number is an atomically incremented request
+// counter.
+func RequestID(next http.Handler) http.Handler {
+ fn := func(w http.ResponseWriter, r *http.Request) {
+ ctx := r.Context()
+ requestID := r.Header.Get(RequestIDHeader)
+ if requestID == "" {
+ myid := atomic.AddUint64(&reqid, 1)
+ requestID = fmt.Sprintf("%s-%06d", prefix, myid)
+ }
+ ctx = context.WithValue(ctx, RequestIDKey, requestID)
+ next.ServeHTTP(w, r.WithContext(ctx))
+ }
+ return http.HandlerFunc(fn)
+}
+
+// GetReqID returns a request ID from the given context if one is present.
+// Returns the empty string if a request ID cannot be found.
+func GetReqID(ctx context.Context) string {
+ if ctx == nil {
+ return ""
+ }
+ if reqID, ok := ctx.Value(RequestIDKey).(string); ok {
+ return reqID
+ }
+ return ""
+}
+
+// NextRequestID generates the next request ID in the sequence.
+func NextRequestID() uint64 {
+ return atomic.AddUint64(&reqid, 1)
+}
diff --git a/vendor/github.com/go-chi/chi/middleware/route_headers.go b/vendor/github.com/go-chi/chi/middleware/route_headers.go
new file mode 100644
index 0000000000..7ee30c8773
--- /dev/null
+++ b/vendor/github.com/go-chi/chi/middleware/route_headers.go
@@ -0,0 +1,160 @@
+package middleware
+
+import (
+ "net/http"
+ "strings"
+)
+
+// RouteHeaders is a neat little header-based router that allows you to direct
+// the flow of a request through a middleware stack based on a request header.
+//
+// For example, lets say you'd like to setup multiple routers depending on the
+// request Host header, you could then do something as so:
+//
+// r := chi.NewRouter()
+// rSubdomain := chi.NewRouter()
+//
+// r.Use(middleware.RouteHeaders().
+// Route("Host", "example.com", middleware.New(r)).
+// Route("Host", "*.example.com", middleware.New(rSubdomain)).
+// Handler)
+//
+// r.Get("/", h)
+// rSubdomain.Get("/", h2)
+//
+//
+// Another example, imagine you want to setup multiple CORS handlers, where for
+// your origin servers you allow authorized requests, but for third-party public
+// requests, authorization is disabled.
+//
+// r := chi.NewRouter()
+//
+// r.Use(middleware.RouteHeaders().
+// Route("Origin", "https://app.skyweaver.net", cors.Handler(cors.Options{
+// AllowedOrigins: []string{"https://api.skyweaver.net"},
+// AllowedMethods: []string{"GET", "POST", "PUT", "DELETE", "OPTIONS"},
+// AllowedHeaders: []string{"Accept", "Authorization", "Content-Type"},
+// AllowCredentials: true, // <----------<<< allow credentials
+// })).
+// Route("Origin", "*", cors.Handler(cors.Options{
+// AllowedOrigins: []string{"*"},
+// AllowedMethods: []string{"GET", "POST", "PUT", "DELETE", "OPTIONS"},
+// AllowedHeaders: []string{"Accept", "Content-Type"},
+// AllowCredentials: false, // <----------<<< do not allow credentials
+// })).
+// Handler)
+//
+func RouteHeaders() HeaderRouter {
+ return HeaderRouter{}
+}
+
+type HeaderRouter map[string][]HeaderRoute
+
+func (hr HeaderRouter) Route(header string, match string, middlewareHandler func(next http.Handler) http.Handler) HeaderRouter {
+ header = strings.ToLower(header)
+ k := hr[header]
+ if k == nil {
+ hr[header] = []HeaderRoute{}
+ }
+ hr[header] = append(hr[header], HeaderRoute{MatchOne: NewPattern(match), Middleware: middlewareHandler})
+ return hr
+}
+
+func (hr HeaderRouter) RouteAny(header string, match []string, middlewareHandler func(next http.Handler) http.Handler) HeaderRouter {
+ header = strings.ToLower(header)
+ k := hr[header]
+ if k == nil {
+ hr[header] = []HeaderRoute{}
+ }
+ patterns := []Pattern{}
+ for _, m := range match {
+ patterns = append(patterns, NewPattern(m))
+ }
+ hr[header] = append(hr[header], HeaderRoute{MatchAny: patterns, Middleware: middlewareHandler})
+ return hr
+}
+
+func (hr HeaderRouter) RouteDefault(handler func(next http.Handler) http.Handler) HeaderRouter {
+ hr["*"] = []HeaderRoute{{Middleware: handler}}
+ return hr
+}
+
+func (hr HeaderRouter) Handler(next http.Handler) http.Handler {
+ return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+ if len(hr) == 0 {
+ // skip if no routes set
+ next.ServeHTTP(w, r)
+ }
+
+ // find first matching header route, and continue
+ for header, matchers := range hr {
+ headerValue := r.Header.Get(header)
+ if headerValue == "" {
+ continue
+ }
+ headerValue = strings.ToLower(headerValue)
+ for _, matcher := range matchers {
+ if matcher.IsMatch(headerValue) {
+ matcher.Middleware(next).ServeHTTP(w, r)
+ return
+ }
+ }
+ }
+
+ // if no match, check for "*" default route
+ matcher, ok := hr["*"]
+ if !ok || matcher[0].Middleware == nil {
+ next.ServeHTTP(w, r)
+ return
+ }
+ matcher[0].Middleware(next).ServeHTTP(w, r)
+ })
+}
+
+type HeaderRoute struct {
+ MatchAny []Pattern
+ MatchOne Pattern
+ Middleware func(next http.Handler) http.Handler
+}
+
+func (r HeaderRoute) IsMatch(value string) bool {
+ if len(r.MatchAny) > 0 {
+ for _, m := range r.MatchAny {
+ if m.Match(value) {
+ return true
+ }
+ }
+ } else if r.MatchOne.Match(value) {
+ return true
+ }
+ return false
+}
+
+type Pattern struct {
+ prefix string
+ suffix string
+ wildcard bool
+}
+
+func NewPattern(value string) Pattern {
+ p := Pattern{}
+ if i := strings.IndexByte(value, '*'); i >= 0 {
+ p.wildcard = true
+ p.prefix = value[0:i]
+ p.suffix = value[i+1:]
+ } else {
+ p.prefix = value
+ }
+ return p
+}
+
+func (p Pattern) Match(v string) bool {
+ if !p.wildcard {
+ if p.prefix == v {
+ return true
+ } else {
+ return false
+ }
+ }
+ return len(v) >= len(p.prefix+p.suffix) && strings.HasPrefix(v, p.prefix) && strings.HasSuffix(v, p.suffix)
+}
diff --git a/vendor/github.com/go-chi/chi/middleware/strip.go b/vendor/github.com/go-chi/chi/middleware/strip.go
new file mode 100644
index 0000000000..2b8b1842ab
--- /dev/null
+++ b/vendor/github.com/go-chi/chi/middleware/strip.go
@@ -0,0 +1,56 @@
+package middleware
+
+import (
+ "fmt"
+ "net/http"
+
+ "github.com/go-chi/chi"
+)
+
+// StripSlashes is a middleware that will match request paths with a trailing
+// slash, strip it from the path and continue routing through the mux, if a route
+// matches, then it will serve the handler.
+func StripSlashes(next http.Handler) http.Handler {
+ fn := func(w http.ResponseWriter, r *http.Request) {
+ var path string
+ rctx := chi.RouteContext(r.Context())
+ if rctx.RoutePath != "" {
+ path = rctx.RoutePath
+ } else {
+ path = r.URL.Path
+ }
+ if len(path) > 1 && path[len(path)-1] == '/' {
+ rctx.RoutePath = path[:len(path)-1]
+ }
+ next.ServeHTTP(w, r)
+ }
+ return http.HandlerFunc(fn)
+}
+
+// RedirectSlashes is a middleware that will match request paths with a trailing
+// slash and redirect to the same path, less the trailing slash.
+//
+// NOTE: RedirectSlashes middleware is *incompatible* with http.FileServer,
+// see https://github.com/go-chi/chi/issues/343
+func RedirectSlashes(next http.Handler) http.Handler {
+ fn := func(w http.ResponseWriter, r *http.Request) {
+ var path string
+ rctx := chi.RouteContext(r.Context())
+ if rctx.RoutePath != "" {
+ path = rctx.RoutePath
+ } else {
+ path = r.URL.Path
+ }
+ if len(path) > 1 && path[len(path)-1] == '/' {
+ if r.URL.RawQuery != "" {
+ path = fmt.Sprintf("%s?%s", path[:len(path)-1], r.URL.RawQuery)
+ } else {
+ path = path[:len(path)-1]
+ }
+ http.Redirect(w, r, path, 301)
+ return
+ }
+ next.ServeHTTP(w, r)
+ }
+ return http.HandlerFunc(fn)
+}
diff --git a/vendor/github.com/go-chi/chi/middleware/terminal.go b/vendor/github.com/go-chi/chi/middleware/terminal.go
new file mode 100644
index 0000000000..5ead7b9243
--- /dev/null
+++ b/vendor/github.com/go-chi/chi/middleware/terminal.go
@@ -0,0 +1,63 @@
+package middleware
+
+// Ported from Goji's middleware, source:
+// https://github.com/zenazn/goji/tree/master/web/middleware
+
+import (
+ "fmt"
+ "io"
+ "os"
+)
+
+var (
+ // Normal colors
+ nBlack = []byte{'\033', '[', '3', '0', 'm'}
+ nRed = []byte{'\033', '[', '3', '1', 'm'}
+ nGreen = []byte{'\033', '[', '3', '2', 'm'}
+ nYellow = []byte{'\033', '[', '3', '3', 'm'}
+ nBlue = []byte{'\033', '[', '3', '4', 'm'}
+ nMagenta = []byte{'\033', '[', '3', '5', 'm'}
+ nCyan = []byte{'\033', '[', '3', '6', 'm'}
+ nWhite = []byte{'\033', '[', '3', '7', 'm'}
+ // Bright colors
+ bBlack = []byte{'\033', '[', '3', '0', ';', '1', 'm'}
+ bRed = []byte{'\033', '[', '3', '1', ';', '1', 'm'}
+ bGreen = []byte{'\033', '[', '3', '2', ';', '1', 'm'}
+ bYellow = []byte{'\033', '[', '3', '3', ';', '1', 'm'}
+ bBlue = []byte{'\033', '[', '3', '4', ';', '1', 'm'}
+ bMagenta = []byte{'\033', '[', '3', '5', ';', '1', 'm'}
+ bCyan = []byte{'\033', '[', '3', '6', ';', '1', 'm'}
+ bWhite = []byte{'\033', '[', '3', '7', ';', '1', 'm'}
+
+ reset = []byte{'\033', '[', '0', 'm'}
+)
+
+var IsTTY bool
+
+func init() {
+ // This is sort of cheating: if stdout is a character device, we assume
+ // that means it's a TTY. Unfortunately, there are many non-TTY
+ // character devices, but fortunately stdout is rarely set to any of
+ // them.
+ //
+ // We could solve this properly by pulling in a dependency on
+ // code.google.com/p/go.crypto/ssh/terminal, for instance, but as a
+ // heuristic for whether to print in color or in black-and-white, I'd
+ // really rather not.
+ fi, err := os.Stdout.Stat()
+ if err == nil {
+ m := os.ModeDevice | os.ModeCharDevice
+ IsTTY = fi.Mode()&m == m
+ }
+}
+
+// colorWrite
+func cW(w io.Writer, useColor bool, color []byte, s string, args ...interface{}) {
+ if IsTTY && useColor {
+ w.Write(color)
+ }
+ fmt.Fprintf(w, s, args...)
+ if IsTTY && useColor {
+ w.Write(reset)
+ }
+}
diff --git a/vendor/github.com/go-chi/chi/middleware/throttle.go b/vendor/github.com/go-chi/chi/middleware/throttle.go
new file mode 100644
index 0000000000..01100b7ada
--- /dev/null
+++ b/vendor/github.com/go-chi/chi/middleware/throttle.go
@@ -0,0 +1,132 @@
+package middleware
+
+import (
+ "net/http"
+ "strconv"
+ "time"
+)
+
+const (
+ errCapacityExceeded = "Server capacity exceeded."
+ errTimedOut = "Timed out while waiting for a pending request to complete."
+ errContextCanceled = "Context was canceled."
+)
+
+var (
+ defaultBacklogTimeout = time.Second * 60
+)
+
+// ThrottleOpts represents a set of throttling options.
+type ThrottleOpts struct {
+ Limit int
+ BacklogLimit int
+ BacklogTimeout time.Duration
+ RetryAfterFn func(ctxDone bool) time.Duration
+}
+
+// Throttle is a middleware that limits number of currently processed requests
+// at a time across all users. Note: Throttle is not a rate-limiter per user,
+// instead it just puts a ceiling on the number of currentl in-flight requests
+// being processed from the point from where the Throttle middleware is mounted.
+func Throttle(limit int) func(http.Handler) http.Handler {
+ return ThrottleWithOpts(ThrottleOpts{Limit: limit, BacklogTimeout: defaultBacklogTimeout})
+}
+
+// ThrottleBacklog is a middleware that limits number of currently processed
+// requests at a time and provides a backlog for holding a finite number of
+// pending requests.
+func ThrottleBacklog(limit int, backlogLimit int, backlogTimeout time.Duration) func(http.Handler) http.Handler {
+ return ThrottleWithOpts(ThrottleOpts{Limit: limit, BacklogLimit: backlogLimit, BacklogTimeout: backlogTimeout})
+}
+
+// ThrottleWithOpts is a middleware that limits number of currently processed requests using passed ThrottleOpts.
+func ThrottleWithOpts(opts ThrottleOpts) func(http.Handler) http.Handler {
+ if opts.Limit < 1 {
+ panic("chi/middleware: Throttle expects limit > 0")
+ }
+
+ if opts.BacklogLimit < 0 {
+ panic("chi/middleware: Throttle expects backlogLimit to be positive")
+ }
+
+ t := throttler{
+ tokens: make(chan token, opts.Limit),
+ backlogTokens: make(chan token, opts.Limit+opts.BacklogLimit),
+ backlogTimeout: opts.BacklogTimeout,
+ retryAfterFn: opts.RetryAfterFn,
+ }
+
+ // Filling tokens.
+ for i := 0; i < opts.Limit+opts.BacklogLimit; i++ {
+ if i < opts.Limit {
+ t.tokens <- token{}
+ }
+ t.backlogTokens <- token{}
+ }
+
+ return func(next http.Handler) http.Handler {
+ fn := func(w http.ResponseWriter, r *http.Request) {
+ ctx := r.Context()
+
+ select {
+
+ case <-ctx.Done():
+ t.setRetryAfterHeaderIfNeeded(w, true)
+ http.Error(w, errContextCanceled, http.StatusTooManyRequests)
+ return
+
+ case btok := <-t.backlogTokens:
+ timer := time.NewTimer(t.backlogTimeout)
+
+ defer func() {
+ t.backlogTokens <- btok
+ }()
+
+ select {
+ case <-timer.C:
+ t.setRetryAfterHeaderIfNeeded(w, false)
+ http.Error(w, errTimedOut, http.StatusTooManyRequests)
+ return
+ case <-ctx.Done():
+ timer.Stop()
+ t.setRetryAfterHeaderIfNeeded(w, true)
+ http.Error(w, errContextCanceled, http.StatusTooManyRequests)
+ return
+ case tok := <-t.tokens:
+ defer func() {
+ timer.Stop()
+ t.tokens <- tok
+ }()
+ next.ServeHTTP(w, r)
+ }
+ return
+
+ default:
+ t.setRetryAfterHeaderIfNeeded(w, false)
+ http.Error(w, errCapacityExceeded, http.StatusTooManyRequests)
+ return
+ }
+ }
+
+ return http.HandlerFunc(fn)
+ }
+}
+
+// token represents a request that is being processed.
+type token struct{}
+
+// throttler limits number of currently processed requests at a time.
+type throttler struct {
+ tokens chan token
+ backlogTokens chan token
+ backlogTimeout time.Duration
+ retryAfterFn func(ctxDone bool) time.Duration
+}
+
+// setRetryAfterHeaderIfNeeded sets Retry-After HTTP header if corresponding retryAfterFn option of throttler is initialized.
+func (t throttler) setRetryAfterHeaderIfNeeded(w http.ResponseWriter, ctxDone bool) {
+ if t.retryAfterFn == nil {
+ return
+ }
+ w.Header().Set("Retry-After", strconv.Itoa(int(t.retryAfterFn(ctxDone).Seconds())))
+}
diff --git a/vendor/github.com/go-chi/chi/middleware/timeout.go b/vendor/github.com/go-chi/chi/middleware/timeout.go
new file mode 100644
index 0000000000..8e373536cf
--- /dev/null
+++ b/vendor/github.com/go-chi/chi/middleware/timeout.go
@@ -0,0 +1,49 @@
+package middleware
+
+import (
+ "context"
+ "net/http"
+ "time"
+)
+
+// Timeout is a middleware that cancels ctx after a given timeout and return
+// a 504 Gateway Timeout error to the client.
+//
+// It's required that you select the ctx.Done() channel to check for the signal
+// if the context has reached its deadline and return, otherwise the timeout
+// signal will be just ignored.
+//
+// ie. a route/handler may look like:
+//
+// r.Get("/long", func(w http.ResponseWriter, r *http.Request) {
+// ctx := r.Context()
+// processTime := time.Duration(rand.Intn(4)+1) * time.Second
+//
+// select {
+// case <-ctx.Done():
+// return
+//
+// case <-time.After(processTime):
+// // The above channel simulates some hard work.
+// }
+//
+// w.Write([]byte("done"))
+// })
+//
+func Timeout(timeout time.Duration) func(next http.Handler) http.Handler {
+ return func(next http.Handler) http.Handler {
+ fn := func(w http.ResponseWriter, r *http.Request) {
+ ctx, cancel := context.WithTimeout(r.Context(), timeout)
+ defer func() {
+ cancel()
+ if ctx.Err() == context.DeadlineExceeded {
+ w.WriteHeader(http.StatusGatewayTimeout)
+ }
+ }()
+
+ r = r.WithContext(ctx)
+ next.ServeHTTP(w, r)
+ }
+ return http.HandlerFunc(fn)
+ }
+}
diff --git a/vendor/github.com/go-chi/chi/middleware/url_format.go b/vendor/github.com/go-chi/chi/middleware/url_format.go
new file mode 100644
index 0000000000..5749e4f32b
--- /dev/null
+++ b/vendor/github.com/go-chi/chi/middleware/url_format.go
@@ -0,0 +1,72 @@
+package middleware
+
+import (
+ "context"
+ "net/http"
+ "strings"
+
+ "github.com/go-chi/chi"
+)
+
+var (
+ // URLFormatCtxKey is the context.Context key to store the URL format data
+ // for a request.
+ URLFormatCtxKey = &contextKey{"URLFormat"}
+)
+
+// URLFormat is a middleware that parses the url extension from a request path and stores it
+// on the context as a string under the key `middleware.URLFormatCtxKey`. The middleware will
+// trim the suffix from the routing path and continue routing.
+//
+// Routers should not include a url parameter for the suffix when using this middleware.
+//
+// Sample usage.. for url paths: `/articles/1`, `/articles/1.json` and `/articles/1.xml`
+//
+// func routes() http.Handler {
+// r := chi.NewRouter()
+// r.Use(middleware.URLFormat)
+//
+// r.Get("/articles/{id}", ListArticles)
+//
+// return r
+// }
+//
+// func ListArticles(w http.ResponseWriter, r *http.Request) {
+// urlFormat, _ := r.Context().Value(middleware.URLFormatCtxKey).(string)
+//
+// switch urlFormat {
+// case "json":
+// render.JSON(w, r, articles)
+// case "xml:"
+// render.XML(w, r, articles)
+// default:
+// render.JSON(w, r, articles)
+// }
+// }
+//
+func URLFormat(next http.Handler) http.Handler {
+ fn := func(w http.ResponseWriter, r *http.Request) {
+ ctx := r.Context()
+
+ var format string
+ path := r.URL.Path
+
+ if strings.Index(path, ".") > 0 {
+ base := strings.LastIndex(path, "/")
+ idx := strings.Index(path[base:], ".")
+
+ if idx > 0 {
+ idx += base
+ format = path[idx+1:]
+
+ rctx := chi.RouteContext(r.Context())
+ rctx.RoutePath = path[:idx]
+ }
+ }
+
+ r = r.WithContext(context.WithValue(ctx, URLFormatCtxKey, format))
+
+ next.ServeHTTP(w, r)
+ }
+ return http.HandlerFunc(fn)
+}
diff --git a/vendor/github.com/go-chi/chi/middleware/value.go b/vendor/github.com/go-chi/chi/middleware/value.go
new file mode 100644
index 0000000000..fbbd0393fb
--- /dev/null
+++ b/vendor/github.com/go-chi/chi/middleware/value.go
@@ -0,0 +1,17 @@
+package middleware
+
+import (
+ "context"
+ "net/http"
+)
+
+// WithValue is a middleware that sets a given key/value in a context chain.
+func WithValue(key interface{}, val interface{}) func(next http.Handler) http.Handler {
+ return func(next http.Handler) http.Handler {
+ fn := func(w http.ResponseWriter, r *http.Request) {
+ r = r.WithContext(context.WithValue(r.Context(), key, val))
+ next.ServeHTTP(w, r)
+ }
+ return http.HandlerFunc(fn)
+ }
+}
diff --git a/vendor/github.com/go-chi/chi/middleware/wrap_writer.go b/vendor/github.com/go-chi/chi/middleware/wrap_writer.go
new file mode 100644
index 0000000000..382a523e48
--- /dev/null
+++ b/vendor/github.com/go-chi/chi/middleware/wrap_writer.go
@@ -0,0 +1,180 @@
+package middleware
+
+// The original work was derived from Goji's middleware, source:
+// https://github.com/zenazn/goji/tree/master/web/middleware
+
+import (
+ "bufio"
+ "io"
+ "net"
+ "net/http"
+)
+
+// NewWrapResponseWriter wraps an http.ResponseWriter, returning a proxy that allows you to
+// hook into various parts of the response process.
+func NewWrapResponseWriter(w http.ResponseWriter, protoMajor int) WrapResponseWriter {
+ _, fl := w.(http.Flusher)
+
+ bw := basicWriter{ResponseWriter: w}
+
+ if protoMajor == 2 {
+ _, ps := w.(http.Pusher)
+ if fl && ps {
+ return &http2FancyWriter{bw}
+ }
+ } else {
+ _, hj := w.(http.Hijacker)
+ _, rf := w.(io.ReaderFrom)
+ if fl && hj && rf {
+ return &httpFancyWriter{bw}
+ }
+ }
+ if fl {
+ return &flushWriter{bw}
+ }
+
+ return &bw
+}
+
+// WrapResponseWriter is a proxy around an http.ResponseWriter that allows you to hook
+// into various parts of the response process.
+type WrapResponseWriter interface {
+ http.ResponseWriter
+ // Status returns the HTTP status of the request, or 0 if one has not
+ // yet been sent.
+ Status() int
+ // BytesWritten returns the total number of bytes sent to the client.
+ BytesWritten() int
+ // Tee causes the response body to be written to the given io.Writer in
+ // addition to proxying the writes through. Only one io.Writer can be
+ // tee'd to at once: setting a second one will overwrite the first.
+ // Writes will be sent to the proxy before being written to this
+ // io.Writer. It is illegal for the tee'd writer to be modified
+ // concurrently with writes.
+ Tee(io.Writer)
+ // Unwrap returns the original proxied target.
+ Unwrap() http.ResponseWriter
+}
+
+// basicWriter wraps a http.ResponseWriter that implements the minimal
+// http.ResponseWriter interface.
+type basicWriter struct {
+ http.ResponseWriter
+ wroteHeader bool
+ code int
+ bytes int
+ tee io.Writer
+}
+
+func (b *basicWriter) WriteHeader(code int) {
+ if !b.wroteHeader {
+ b.code = code
+ b.wroteHeader = true
+ b.ResponseWriter.WriteHeader(code)
+ }
+}
+
+func (b *basicWriter) Write(buf []byte) (int, error) {
+ b.maybeWriteHeader()
+ n, err := b.ResponseWriter.Write(buf)
+ if b.tee != nil {
+ _, err2 := b.tee.Write(buf[:n])
+ // Prefer errors generated by the proxied writer.
+ if err == nil {
+ err = err2
+ }
+ }
+ b.bytes += n
+ return n, err
+}
+
+func (b *basicWriter) maybeWriteHeader() {
+ if !b.wroteHeader {
+ b.WriteHeader(http.StatusOK)
+ }
+}
+
+func (b *basicWriter) Status() int {
+ return b.code
+}
+
+func (b *basicWriter) BytesWritten() int {
+ return b.bytes
+}
+
+func (b *basicWriter) Tee(w io.Writer) {
+ b.tee = w
+}
+
+func (b *basicWriter) Unwrap() http.ResponseWriter {
+ return b.ResponseWriter
+}
+
+type flushWriter struct {
+ basicWriter
+}
+
+func (f *flushWriter) Flush() {
+ f.wroteHeader = true
+ fl := f.basicWriter.ResponseWriter.(http.Flusher)
+ fl.Flush()
+}
+
+var _ http.Flusher = &flushWriter{}
+
+// httpFancyWriter is a HTTP writer that additionally satisfies
+// http.Flusher, http.Hijacker, and io.ReaderFrom. It exists for the common case
+// of wrapping the http.ResponseWriter that package http gives you, in order to
+// make the proxied object support the full method set of the proxied object.
+type httpFancyWriter struct {
+ basicWriter
+}
+
+func (f *httpFancyWriter) Flush() {
+ f.wroteHeader = true
+ fl := f.basicWriter.ResponseWriter.(http.Flusher)
+ fl.Flush()
+}
+
+func (f *httpFancyWriter) Hijack() (net.Conn, *bufio.ReadWriter, error) {
+ hj := f.basicWriter.ResponseWriter.(http.Hijacker)
+ return hj.Hijack()
+}
+
+func (f *http2FancyWriter) Push(target string, opts *http.PushOptions) error {
+ return f.basicWriter.ResponseWriter.(http.Pusher).Push(target, opts)
+}
+
+func (f *httpFancyWriter) ReadFrom(r io.Reader) (int64, error) {
+ if f.basicWriter.tee != nil {
+ n, err := io.Copy(&f.basicWriter, r)
+ f.basicWriter.bytes += int(n)
+ return n, err
+ }
+ rf := f.basicWriter.ResponseWriter.(io.ReaderFrom)
+ f.basicWriter.maybeWriteHeader()
+ n, err := rf.ReadFrom(r)
+ f.basicWriter.bytes += int(n)
+ return n, err
+}
+
+var _ http.Flusher = &httpFancyWriter{}
+var _ http.Hijacker = &httpFancyWriter{}
+var _ http.Pusher = &http2FancyWriter{}
+var _ io.ReaderFrom = &httpFancyWriter{}
+
+// http2FancyWriter is a HTTP2 writer that additionally satisfies
+// http.Flusher, and io.ReaderFrom. It exists for the common case
+// of wrapping the http.ResponseWriter that package http gives you, in order to
+// make the proxied object support the full method set of the proxied object.
+type http2FancyWriter struct {
+ basicWriter
+}
+
+func (f *http2FancyWriter) Flush() {
+ f.wroteHeader = true
+ fl := f.basicWriter.ResponseWriter.(http.Flusher)
+ fl.Flush()
+}
+
+var _ http.Flusher = &http2FancyWriter{}
diff --git a/vendor/github.com/go-chi/chi/mux.go b/vendor/github.com/go-chi/chi/mux.go
new file mode 100644
index 0000000000..52950e97b5
--- /dev/null
+++ b/vendor/github.com/go-chi/chi/mux.go
@@ -0,0 +1,466 @@
+package chi
+
+import (
+ "context"
+ "fmt"
+ "net/http"
+ "strings"
+ "sync"
+)
+
+var _ Router = &Mux{}
+
+// Mux is a simple HTTP route multiplexer that parses a request path,
+// records any URL params, and executes an end handler. It implements
+// the http.Handler interface and is friendly with the standard library.
+//
+// Mux is designed to be fast, minimal and offer a powerful API for building
+// modular and composable HTTP services with a large set of handlers. It's
+// particularly useful for writing large REST API services that break a handler
+// into many smaller parts composed of middlewares and end handlers.
+type Mux struct {
+ // The radix trie router
+ tree *node
+
+ // The middleware stack
+ middlewares []func(http.Handler) http.Handler
+
+ // Controls the behaviour of middleware chain generation when a mux
+ // is registered as an inline group inside another mux.
+ inline bool
+ parent *Mux
+
+ // The computed mux handler made of the chained middleware stack and
+ // the tree router
+ handler http.Handler
+
+ // Routing context pool
+ pool *sync.Pool
+
+ // Custom route not found handler
+ notFoundHandler http.HandlerFunc
+
+ // Custom method not allowed handler
+ methodNotAllowedHandler http.HandlerFunc
+}
+
+// NewMux returns a newly initialized Mux object that implements the Router
+// interface.
+func NewMux() *Mux {
+ mux := &Mux{tree: &node{}, pool: &sync.Pool{}}
+ mux.pool.New = func() interface{} {
+ return NewRouteContext()
+ }
+ return mux
+}
+
+// ServeHTTP is the single method of the http.Handler interface that makes
+// Mux interoperable with the standard library. It uses a sync.Pool to get and
+// reuse routing contexts for each request.
+func (mx *Mux) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+ // Ensure the mux has some routes defined on the mux
+ if mx.handler == nil {
+ mx.NotFoundHandler().ServeHTTP(w, r)
+ return
+ }
+
+ // Check if a routing context already exists from a parent router.
+ rctx, _ := r.Context().Value(RouteCtxKey).(*Context)
+ if rctx != nil {
+ mx.handler.ServeHTTP(w, r)
+ return
+ }
+
+ // Fetch a RouteContext object from the sync pool, and call the computed
+ // mx.handler that is comprised of mx.middlewares + mx.routeHTTP.
+ // Once the request is finished, reset the routing context and put it back
+ // into the pool for reuse from another request.
+ rctx = mx.pool.Get().(*Context)
+ rctx.Reset()
+ rctx.Routes = mx
+
+ // NOTE: r.WithContext() causes 2 allocations and context.WithValue() causes 1 allocation
+ r = r.WithContext(context.WithValue(r.Context(), RouteCtxKey, rctx))
+
+ // Serve the request and once its done, put the request context back in the sync pool
+ mx.handler.ServeHTTP(w, r)
+ mx.pool.Put(rctx)
+}
+
+// Use appends a middleware handler to the Mux middleware stack.
+//
+// The middleware stack for any Mux will execute before searching for a matching
+// route to a specific handler, which provides opportunity to respond early,
+// change the course of the request execution, or set request-scoped values for
+// the next http.Handler.
+func (mx *Mux) Use(middlewares ...func(http.Handler) http.Handler) {
+ if mx.handler != nil {
+ panic("chi: all middlewares must be defined before routes on a mux")
+ }
+ mx.middlewares = append(mx.middlewares, middlewares...)
+}
+
+// Handle adds the route `pattern` that matches any http method to
+// execute the `handler` http.Handler.
+func (mx *Mux) Handle(pattern string, handler http.Handler) {
+ mx.handle(mALL, pattern, handler)
+}
+
+// HandleFunc adds the route `pattern` that matches any http method to
+// execute the `handlerFn` http.HandlerFunc.
+func (mx *Mux) HandleFunc(pattern string, handlerFn http.HandlerFunc) {
+ mx.handle(mALL, pattern, handlerFn)
+}
+
+// Method adds the route `pattern` that matches `method` http method to
+// execute the `handler` http.Handler.
+func (mx *Mux) Method(method, pattern string, handler http.Handler) {
+ m, ok := methodMap[strings.ToUpper(method)]
+ if !ok {
+ panic(fmt.Sprintf("chi: '%s' http method is not supported.", method))
+ }
+ mx.handle(m, pattern, handler)
+}
+
+// MethodFunc adds the route `pattern` that matches `method` http method to
+// execute the `handlerFn` http.HandlerFunc.
+func (mx *Mux) MethodFunc(method, pattern string, handlerFn http.HandlerFunc) {
+ mx.Method(method, pattern, handlerFn)
+}
+
+// Connect adds the route `pattern` that matches a CONNECT http method to
+// execute the `handlerFn` http.HandlerFunc.
+func (mx *Mux) Connect(pattern string, handlerFn http.HandlerFunc) {
+ mx.handle(mCONNECT, pattern, handlerFn)
+}
+
+// Delete adds the route `pattern` that matches a DELETE http method to
+// execute the `handlerFn` http.HandlerFunc.
+func (mx *Mux) Delete(pattern string, handlerFn http.HandlerFunc) {
+ mx.handle(mDELETE, pattern, handlerFn)
+}
+
+// Get adds the route `pattern` that matches a GET http method to
+// execute the `handlerFn` http.HandlerFunc.
+func (mx *Mux) Get(pattern string, handlerFn http.HandlerFunc) {
+ mx.handle(mGET, pattern, handlerFn)
+}
+
+// Head adds the route `pattern` that matches a HEAD http method to
+// execute the `handlerFn` http.HandlerFunc.
+func (mx *Mux) Head(pattern string, handlerFn http.HandlerFunc) {
+ mx.handle(mHEAD, pattern, handlerFn)
+}
+
+// Options adds the route `pattern` that matches a OPTIONS http method to
+// execute the `handlerFn` http.HandlerFunc.
+func (mx *Mux) Options(pattern string, handlerFn http.HandlerFunc) {
+ mx.handle(mOPTIONS, pattern, handlerFn)
+}
+
+// Patch adds the route `pattern` that matches a PATCH http method to
+// execute the `handlerFn` http.HandlerFunc.
+func (mx *Mux) Patch(pattern string, handlerFn http.HandlerFunc) {
+ mx.handle(mPATCH, pattern, handlerFn)
+}
+
+// Post adds the route `pattern` that matches a POST http method to
+// execute the `handlerFn` http.HandlerFunc.
+func (mx *Mux) Post(pattern string, handlerFn http.HandlerFunc) {
+ mx.handle(mPOST, pattern, handlerFn)
+}
+
+// Put adds the route `pattern` that matches a PUT http method to
+// execute the `handlerFn` http.HandlerFunc.
+func (mx *Mux) Put(pattern string, handlerFn http.HandlerFunc) {
+ mx.handle(mPUT, pattern, handlerFn)
+}
+
+// Trace adds the route `pattern` that matches a TRACE http method to
+// execute the `handlerFn` http.HandlerFunc.
+func (mx *Mux) Trace(pattern string, handlerFn http.HandlerFunc) {
+ mx.handle(mTRACE, pattern, handlerFn)
+}
+
+// NotFound sets a custom http.HandlerFunc for routing paths that could
+// not be found. The default 404 handler is `http.NotFound`.
+func (mx *Mux) NotFound(handlerFn http.HandlerFunc) {
+ // Build NotFound handler chain
+ m := mx
+ hFn := handlerFn
+ if mx.inline && mx.parent != nil {
+ m = mx.parent
+ hFn = Chain(mx.middlewares...).HandlerFunc(hFn).ServeHTTP
+ }
+
+ // Update the notFoundHandler from this point forward
+ m.notFoundHandler = hFn
+ m.updateSubRoutes(func(subMux *Mux) {
+ if subMux.notFoundHandler == nil {
+ subMux.NotFound(hFn)
+ }
+ })
+}
+
+// MethodNotAllowed sets a custom http.HandlerFunc for routing paths where the
+// method is unresolved. The default handler returns a 405 with an empty body.
+func (mx *Mux) MethodNotAllowed(handlerFn http.HandlerFunc) {
+ // Build MethodNotAllowed handler chain
+ m := mx
+ hFn := handlerFn
+ if mx.inline && mx.parent != nil {
+ m = mx.parent
+ hFn = Chain(mx.middlewares...).HandlerFunc(hFn).ServeHTTP
+ }
+
+ // Update the methodNotAllowedHandler from this point forward
+ m.methodNotAllowedHandler = hFn
+ m.updateSubRoutes(func(subMux *Mux) {
+ if subMux.methodNotAllowedHandler == nil {
+ subMux.MethodNotAllowed(hFn)
+ }
+ })
+}
+
+// With adds inline middlewares for an endpoint handler.
+func (mx *Mux) With(middlewares ...func(http.Handler) http.Handler) Router {
+ // Similarly as in handle(), we must build the mux handler once additional
+ // middleware registration isn't allowed for this stack, like now.
+ if !mx.inline && mx.handler == nil {
+ mx.buildRouteHandler()
+ }
+
+ // Copy middlewares from parent inline muxs
+ var mws Middlewares
+ if mx.inline {
+ mws = make(Middlewares, len(mx.middlewares))
+ copy(mws, mx.middlewares)
+ }
+ mws = append(mws, middlewares...)
+
+ im := &Mux{
+ pool: mx.pool, inline: true, parent: mx, tree: mx.tree, middlewares: mws,
+ notFoundHandler: mx.notFoundHandler, methodNotAllowedHandler: mx.methodNotAllowedHandler,
+ }
+
+ return im
+}
+
+// Group creates a new inline-Mux with a fresh middleware stack. It's useful
+// for a group of handlers along the same routing path that use an additional
+// set of middlewares. See _examples/.
+func (mx *Mux) Group(fn func(r Router)) Router {
+ im := mx.With().(*Mux)
+ if fn != nil {
+ fn(im)
+ }
+ return im
+}
+
+// Route creates a new Mux with a fresh middleware stack and mounts it
+// along the `pattern` as a subrouter. Effectively, this is a short-hand
+// call to Mount. See _examples/.
+func (mx *Mux) Route(pattern string, fn func(r Router)) Router {
+ subRouter := NewRouter()
+ if fn != nil {
+ fn(subRouter)
+ }
+ mx.Mount(pattern, subRouter)
+ return subRouter
+}
+
+// Mount attaches another http.Handler or chi Router as a subrouter along a routing
+// path. It's very useful to split up a large API as many independent routers and
+// compose them as a single service using Mount. See _examples/.
+//
+// Note that Mount() simply sets a wildcard along the `pattern` that will continue
+// routing at the `handler`, which in most cases is another chi.Router. As a result,
+// if you define two Mount() routes on the exact same pattern the mount will panic.
+func (mx *Mux) Mount(pattern string, handler http.Handler) {
+ // Provide runtime safety for ensuring a pattern isn't mounted on an existing
+ // routing pattern.
+ if mx.tree.findPattern(pattern+"*") || mx.tree.findPattern(pattern+"/*") {
+ panic(fmt.Sprintf("chi: attempting to Mount() a handler on an existing path, '%s'", pattern))
+ }
+
+ // Assign sub-Router's with the parent not found & method not allowed handler if not specified.
+ subr, ok := handler.(*Mux)
+ if ok && subr.notFoundHandler == nil && mx.notFoundHandler != nil {
+ subr.NotFound(mx.notFoundHandler)
+ }
+ if ok && subr.methodNotAllowedHandler == nil && mx.methodNotAllowedHandler != nil {
+ subr.MethodNotAllowed(mx.methodNotAllowedHandler)
+ }
+
+ mountHandler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+ rctx := RouteContext(r.Context())
+ rctx.RoutePath = mx.nextRoutePath(rctx)
+ handler.ServeHTTP(w, r)
+ })
+
+ if pattern == "" || pattern[len(pattern)-1] != '/' {
+ mx.handle(mALL|mSTUB, pattern, mountHandler)
+ mx.handle(mALL|mSTUB, pattern+"/", mountHandler)
+ pattern += "/"
+ }
+
+ method := mALL
+ subroutes, _ := handler.(Routes)
+ if subroutes != nil {
+ method |= mSTUB
+ }
+ n := mx.handle(method, pattern+"*", mountHandler)
+
+ if subroutes != nil {
+ n.subroutes = subroutes
+ }
+}
+
+// Routes returns a slice of routing information from the tree,
+// useful for traversing available routes of a router.
+func (mx *Mux) Routes() []Route {
+ return mx.tree.routes()
+}
+
+// Middlewares returns a slice of middleware handler functions.
+func (mx *Mux) Middlewares() Middlewares {
+ return mx.middlewares
+}
+
+// Match searches the routing tree for a handler that matches the method/path.
+// It's similar to routing a http request, but without executing the handler
+// thereafter.
+//
+// Note: the *Context state is updated during execution, so manage
+// the state carefully or make a NewRouteContext().
+func (mx *Mux) Match(rctx *Context, method, path string) bool {
+ m, ok := methodMap[method]
+ if !ok {
+ return false
+ }
+
+ node, _, h := mx.tree.FindRoute(rctx, m, path)
+
+ if node != nil && node.subroutes != nil {
+ rctx.RoutePath = mx.nextRoutePath(rctx)
+ return node.subroutes.Match(rctx, method, rctx.RoutePath)
+ }
+
+ return h != nil
+}
+
+// NotFoundHandler returns the default Mux 404 responder whenever a route
+// cannot be found.
+func (mx *Mux) NotFoundHandler() http.HandlerFunc {
+ if mx.notFoundHandler != nil {
+ return mx.notFoundHandler
+ }
+ return http.NotFound
+}
+
+// MethodNotAllowedHandler returns the default Mux 405 responder whenever
+// a method cannot be resolved for a route.
+func (mx *Mux) MethodNotAllowedHandler() http.HandlerFunc {
+ if mx.methodNotAllowedHandler != nil {
+ return mx.methodNotAllowedHandler
+ }
+ return methodNotAllowedHandler
+}
+
+// buildRouteHandler builds the single mux handler that is a chain of the middleware
+// stack, as defined by calls to Use(), and the tree router (Mux) itself. After this
+// point, no other middlewares can be registered on this Mux's stack. But you can still
+// compose additional middlewares via Group()'s or using a chained middleware handler.
+func (mx *Mux) buildRouteHandler() {
+ mx.handler = chain(mx.middlewares, http.HandlerFunc(mx.routeHTTP))
+}
+
+// handle registers a http.Handler in the routing tree for a particular http method
+// and routing pattern.
+func (mx *Mux) handle(method methodTyp, pattern string, handler http.Handler) *node {
+ if len(pattern) == 0 || pattern[0] != '/' {
+ panic(fmt.Sprintf("chi: routing pattern must begin with '/' in '%s'", pattern))
+ }
+
+ // Build the computed routing handler for this routing pattern.
+ if !mx.inline && mx.handler == nil {
+ mx.buildRouteHandler()
+ }
+
+ // Build endpoint handler with inline middlewares for the route
+ var h http.Handler
+ if mx.inline {
+ mx.handler = http.HandlerFunc(mx.routeHTTP)
+ h = Chain(mx.middlewares...).Handler(handler)
+ } else {
+ h = handler
+ }
+
+ // Add the endpoint to the tree and return the node
+ return mx.tree.InsertRoute(method, pattern, h)
+}
+
+// routeHTTP routes a http.Request through the Mux routing tree to serve
+// the matching handler for a particular http method.
+func (mx *Mux) routeHTTP(w http.ResponseWriter, r *http.Request) {
+ // Grab the route context object
+ rctx := r.Context().Value(RouteCtxKey).(*Context)
+
+ // The request routing path
+ routePath := rctx.RoutePath
+ if routePath == "" {
+ if r.URL.RawPath != "" {
+ routePath = r.URL.RawPath
+ } else {
+ routePath = r.URL.Path
+ }
+ }
+
+ // Check if method is supported by chi
+ if rctx.RouteMethod == "" {
+ rctx.RouteMethod = r.Method
+ }
+ method, ok := methodMap[rctx.RouteMethod]
+ if !ok {
+ mx.MethodNotAllowedHandler().ServeHTTP(w, r)
+ return
+ }
+
+ // Find the route
+ if _, _, h := mx.tree.FindRoute(rctx, method, routePath); h != nil {
+ h.ServeHTTP(w, r)
+ return
+ }
+ if rctx.methodNotAllowed {
+ mx.MethodNotAllowedHandler().ServeHTTP(w, r)
+ } else {
+ mx.NotFoundHandler().ServeHTTP(w, r)
+ }
+}
+
+func (mx *Mux) nextRoutePath(rctx *Context) string {
+ routePath := "/"
+ nx := len(rctx.routeParams.Keys) - 1 // index of last param in list
+ if nx >= 0 && rctx.routeParams.Keys[nx] == "*" && len(rctx.routeParams.Values) > nx {
+ routePath = "/" + rctx.routeParams.Values[nx]
+ }
+ return routePath
+}
+
+// Recursively update data on child routers.
+func (mx *Mux) updateSubRoutes(fn func(subMux *Mux)) {
+ for _, r := range mx.tree.routes() {
+ subMux, ok := r.SubRoutes.(*Mux)
+ if !ok {
+ continue
+ }
+ fn(subMux)
+ }
+}
+
+// methodNotAllowedHandler is a helper function to respond with a 405,
+// method not allowed.
+func methodNotAllowedHandler(w http.ResponseWriter, r *http.Request) {
+ w.WriteHeader(405)
+ w.Write(nil)
+}
diff --git a/vendor/github.com/go-chi/chi/tree.go b/vendor/github.com/go-chi/chi/tree.go
new file mode 100644
index 0000000000..fbea31ab9a
--- /dev/null
+++ b/vendor/github.com/go-chi/chi/tree.go
@@ -0,0 +1,865 @@
+package chi
+
+// Radix tree implementation below is a based on the original work by
+// Armon Dadgar in https://github.com/armon/go-radix/blob/master/radix.go
+// (MIT licensed). It's been heavily modified for use as a HTTP routing tree.
+
+import (
+ "fmt"
+ "math"
+ "net/http"
+ "regexp"
+ "sort"
+ "strconv"
+ "strings"
+)
+
+type methodTyp int
+
+const (
+ mSTUB methodTyp = 1 << iota
+ mCONNECT
+ mDELETE
+ mGET
+ mHEAD
+ mOPTIONS
+ mPATCH
+ mPOST
+ mPUT
+ mTRACE
+)
+
+var mALL = mCONNECT | mDELETE | mGET | mHEAD |
+ mOPTIONS | mPATCH | mPOST | mPUT | mTRACE
+
+var methodMap = map[string]methodTyp{
+ http.MethodConnect: mCONNECT,
+ http.MethodDelete: mDELETE,
+ http.MethodGet: mGET,
+ http.MethodHead: mHEAD,
+ http.MethodOptions: mOPTIONS,
+ http.MethodPatch: mPATCH,
+ http.MethodPost: mPOST,
+ http.MethodPut: mPUT,
+ http.MethodTrace: mTRACE,
+}
+
+// RegisterMethod adds support for custom HTTP method handlers, available
+// via Router#Method and Router#MethodFunc
+func RegisterMethod(method string) {
+ if method == "" {
+ return
+ }
+ method = strings.ToUpper(method)
+ if _, ok := methodMap[method]; ok {
+ return
+ }
+ n := len(methodMap)
+ if n > strconv.IntSize {
+ panic(fmt.Sprintf("chi: max number of methods reached (%d)", strconv.IntSize))
+ }
+ mt := methodTyp(math.Exp2(float64(n)))
+ methodMap[method] = mt
+ mALL |= mt
+}
+
+type nodeTyp uint8
+
+const (
+ ntStatic nodeTyp = iota // /home
+ ntRegexp // /{id:[0-9]+}
+ ntParam // /{user}
+ ntCatchAll // /api/v1/*
+)
+
+type node struct {
+ // node type: static, regexp, param, catchAll
+ typ nodeTyp
+
+ // first byte of the prefix
+ label byte
+
+ // first byte of the child prefix
+ tail byte
+
+ // prefix is the common prefix we ignore
+ prefix string
+
+ // regexp matcher for regexp nodes
+ rex *regexp.Regexp
+
+ // HTTP handler endpoints on the leaf node
+ endpoints endpoints
+
+ // subroutes on the leaf node
+ subroutes Routes
+
+ // child nodes should be stored in-order for iteration,
+ // in groups of the node type.
+ children [ntCatchAll + 1]nodes
+}
+
+// endpoints is a mapping of http method constants to handlers
+// for a given route.
+type endpoints map[methodTyp]*endpoint
+
+type endpoint struct {
+ // endpoint handler
+ handler http.Handler
+
+ // pattern is the routing pattern for handler nodes
+ pattern string
+
+ // parameter keys recorded on handler nodes
+ paramKeys []string
+}
+
+func (s endpoints) Value(method methodTyp) *endpoint {
+ mh, ok := s[method]
+ if !ok {
+ mh = &endpoint{}
+ s[method] = mh
+ }
+ return mh
+}
+
+func (n *node) InsertRoute(method methodTyp, pattern string, handler http.Handler) *node {
+ var parent *node
+ search := pattern
+
+ for {
+ // Handle key exhaustion
+ if len(search) == 0 {
+ // Insert or update the node's leaf handler
+ n.setEndpoint(method, handler, pattern)
+ return n
+ }
+
+ // We're going to be searching for a wild node next,
+ // in this case, we need to get the tail
+ var label = search[0]
+ var segTail byte
+ var segEndIdx int
+ var segTyp nodeTyp
+ var segRexpat string
+ if label == '{' || label == '*' {
+ segTyp, _, segRexpat, segTail, _, segEndIdx = patNextSegment(search)
+ }
+
+ var prefix string
+ if segTyp == ntRegexp {
+ prefix = segRexpat
+ }
+
+ // Look for the edge to attach to
+ parent = n
+ n = n.getEdge(segTyp, label, segTail, prefix)
+
+ // No edge, create one
+ if n == nil {
+ child := &node{label: label, tail: segTail, prefix: search}
+ hn := parent.addChild(child, search)
+ hn.setEndpoint(method, handler, pattern)
+
+ return hn
+ }
+
+ // Found an edge to match the pattern
+
+ if n.typ > ntStatic {
+ // We found a param node, trim the param from the search path and continue.
+ // This param/wild pattern segment would already be on the tree from a previous
+ // call to addChild when creating a new node.
+ search = search[segEndIdx:]
+ continue
+ }
+
+ // Static nodes fall below here.
+ // Determine longest prefix of the search key on match.
+ commonPrefix := longestPrefix(search, n.prefix)
+ if commonPrefix == len(n.prefix) {
+ // the common prefix is as long as the current node's prefix we're attempting to insert.
+ // keep the search going.
+ search = search[commonPrefix:]
+ continue
+ }
+
+ // Split the node
+ child := &node{
+ typ: ntStatic,
+ prefix: search[:commonPrefix],
+ }
+ parent.replaceChild(search[0], segTail, child)
+
+ // Restore the existing node
+ n.label = n.prefix[commonPrefix]
+ n.prefix = n.prefix[commonPrefix:]
+ child.addChild(n, n.prefix)
+
+ // If the new key is a subset, set the method/handler on this node and finish.
+ search = search[commonPrefix:]
+ if len(search) == 0 {
+ child.setEndpoint(method, handler, pattern)
+ return child
+ }
+
+ // Create a new edge for the node
+ subchild := &node{
+ typ: ntStatic,
+ label: search[0],
+ prefix: search,
+ }
+ hn := child.addChild(subchild, search)
+ hn.setEndpoint(method, handler, pattern)
+ return hn
+ }
+}
+
+// addChild appends the new `child` node to the tree using the `pattern` as the trie key.
+// For a URL router like chi's, we split the static, param, regexp and wildcard segments
+// into different nodes. In addition, addChild will recursively call itself until every
+// pattern segment is added to the url pattern tree as individual nodes, depending on type.
+func (n *node) addChild(child *node, prefix string) *node {
+ search := prefix
+
+ // handler leaf node added to the tree is the child.
+ // this may be overridden later down the flow
+ hn := child
+
+ // Parse next segment
+ segTyp, _, segRexpat, segTail, segStartIdx, segEndIdx := patNextSegment(search)
+
+ // Add child depending on next up segment
+ switch segTyp {
+
+ case ntStatic:
+ // Search prefix is all static (that is, has no params in path)
+ // noop
+
+ default:
+ // Search prefix contains a param, regexp or wildcard
+
+ if segTyp == ntRegexp {
+ rex, err := regexp.Compile(segRexpat)
+ if err != nil {
+ panic(fmt.Sprintf("chi: invalid regexp pattern '%s' in route param", segRexpat))
+ }
+ child.prefix = segRexpat
+ child.rex = rex
+ }
+
+ if segStartIdx == 0 {
+ // Route starts with a param
+ child.typ = segTyp
+
+ if segTyp == ntCatchAll {
+ segStartIdx = -1
+ } else {
+ segStartIdx = segEndIdx
+ }
+ if segStartIdx < 0 {
+ segStartIdx = len(search)
+ }
+ child.tail = segTail // for params, we set the tail
+
+ if segStartIdx != len(search) {
+ // add static edge for the remaining part, split the end.
+ // its not possible to have adjacent param nodes, so its certainly
+ // going to be a static node next.
+
+ search = search[segStartIdx:] // advance search position
+
+ nn := &node{
+ typ: ntStatic,
+ label: search[0],
+ prefix: search,
+ }
+ hn = child.addChild(nn, search)
+ }
+
+ } else if segStartIdx > 0 {
+ // Route has some param
+
+ // starts with a static segment
+ child.typ = ntStatic
+ child.prefix = search[:segStartIdx]
+ child.rex = nil
+
+ // add the param edge node
+ search = search[segStartIdx:]
+
+ nn := &node{
+ typ: segTyp,
+ label: search[0],
+ tail: segTail,
+ }
+ hn = child.addChild(nn, search)
+
+ }
+ }
+
+ n.children[child.typ] = append(n.children[child.typ], child)
+ n.children[child.typ].Sort()
+ return hn
+}
+
+func (n *node) replaceChild(label, tail byte, child *node) {
+ for i := 0; i < len(n.children[child.typ]); i++ {
+ if n.children[child.typ][i].label == label && n.children[child.typ][i].tail == tail {
+ n.children[child.typ][i] = child
+ n.children[child.typ][i].label = label
+ n.children[child.typ][i].tail = tail
+ return
+ }
+ }
+ panic("chi: replacing missing child")
+}
+
+func (n *node) getEdge(ntyp nodeTyp, label, tail byte, prefix string) *node {
+ nds := n.children[ntyp]
+ for i := 0; i < len(nds); i++ {
+ if nds[i].label == label && nds[i].tail == tail {
+ if ntyp == ntRegexp && nds[i].prefix != prefix {
+ continue
+ }
+ return nds[i]
+ }
+ }
+ return nil
+}
+
+func (n *node) setEndpoint(method methodTyp, handler http.Handler, pattern string) {
+ // Set the handler for the method type on the node
+ if n.endpoints == nil {
+ n.endpoints = make(endpoints)
+ }
+
+ paramKeys := patParamKeys(pattern)
+
+ if method&mSTUB == mSTUB {
+ n.endpoints.Value(mSTUB).handler = handler
+ }
+ if method&mALL == mALL {
+ h := n.endpoints.Value(mALL)
+ h.handler = handler
+ h.pattern = pattern
+ h.paramKeys = paramKeys
+ for _, m := range methodMap {
+ h := n.endpoints.Value(m)
+ h.handler = handler
+ h.pattern = pattern
+ h.paramKeys = paramKeys
+ }
+ } else {
+ h := n.endpoints.Value(method)
+ h.handler = handler
+ h.pattern = pattern
+ h.paramKeys = paramKeys
+ }
+}
+
+func (n *node) FindRoute(rctx *Context, method methodTyp, path string) (*node, endpoints, http.Handler) {
+ // Reset the context routing pattern and params
+ rctx.routePattern = ""
+ rctx.routeParams.Keys = rctx.routeParams.Keys[:0]
+ rctx.routeParams.Values = rctx.routeParams.Values[:0]
+
+ // Find the routing handlers for the path
+ rn := n.findRoute(rctx, method, path)
+ if rn == nil {
+ return nil, nil, nil
+ }
+
+ // Record the routing params in the request lifecycle
+ rctx.URLParams.Keys = append(rctx.URLParams.Keys, rctx.routeParams.Keys...)
+ rctx.URLParams.Values = append(rctx.URLParams.Values, rctx.routeParams.Values...)
+
+ // Record the routing pattern in the request lifecycle
+ if rn.endpoints[method].pattern != "" {
+ rctx.routePattern = rn.endpoints[method].pattern
+ rctx.RoutePatterns = append(rctx.RoutePatterns, rctx.routePattern)
+ }
+
+ return rn, rn.endpoints, rn.endpoints[method].handler
+}
+
+// Recursive edge traversal by checking all nodeTyp groups along the way.
+// It's like searching through a multi-dimensional radix trie.
+func (n *node) findRoute(rctx *Context, method methodTyp, path string) *node {
+ nn := n
+ search := path
+
+ for t, nds := range nn.children {
+ ntyp := nodeTyp(t)
+ if len(nds) == 0 {
+ continue
+ }
+
+ var xn *node
+ xsearch := search
+
+ var label byte
+ if search != "" {
+ label = search[0]
+ }
+
+ switch ntyp {
+ case ntStatic:
+ xn = nds.findEdge(label)
+ if xn == nil || !strings.HasPrefix(xsearch, xn.prefix) {
+ continue
+ }
+ xsearch = xsearch[len(xn.prefix):]
+
+ case ntParam, ntRegexp:
+ // short-circuit and return no matching route for empty param values
+ if xsearch == "" {
+ continue
+ }
+
+ // serially loop through each node grouped by the tail delimiter
+ for idx := 0; idx < len(nds); idx++ {
+ xn = nds[idx]
+
+ // label for param nodes is the delimiter byte
+ p := strings.IndexByte(xsearch, xn.tail)
+
+ if p < 0 {
+ if xn.tail == '/' {
+ p = len(xsearch)
+ } else {
+ continue
+ }
+ }
+
+ if ntyp == ntRegexp && xn.rex != nil {
+ if !xn.rex.MatchString(xsearch[:p]) {
+ continue
+ }
+ } else if strings.IndexByte(xsearch[:p], '/') != -1 {
+ // avoid a match across path segments
+ continue
+ }
+
+ prevlen := len(rctx.routeParams.Values)
+ rctx.routeParams.Values = append(rctx.routeParams.Values, xsearch[:p])
+ xsearch = xsearch[p:]
+
+ if len(xsearch) == 0 {
+ if xn.isLeaf() {
+ h := xn.endpoints[method]
+ if h != nil && h.handler != nil {
+ rctx.routeParams.Keys = append(rctx.routeParams.Keys, h.paramKeys...)
+ return xn
+ }
+
+ // flag that the routing context found a route, but not a corresponding
+ // supported method
+ rctx.methodNotAllowed = true
+ }
+ }
+
+ // recursively find the next node on this branch
+ fin := xn.findRoute(rctx, method, xsearch)
+ if fin != nil {
+ return fin
+ }
+
+ // not found on this branch, reset vars
+ rctx.routeParams.Values = rctx.routeParams.Values[:prevlen]
+ xsearch = search
+ }
+
+ rctx.routeParams.Values = append(rctx.routeParams.Values, "")
+
+ default:
+ // catch-all nodes
+ rctx.routeParams.Values = append(rctx.routeParams.Values, search)
+ xn = nds[0]
+ xsearch = ""
+ }
+
+ if xn == nil {
+ continue
+ }
+
+ // did we find it yet?
+ if len(xsearch) == 0 {
+ if xn.isLeaf() {
+ h := xn.endpoints[method]
+ if h != nil && h.handler != nil {
+ rctx.routeParams.Keys = append(rctx.routeParams.Keys, h.paramKeys...)
+ return xn
+ }
+
+ // flag that the routing context found a route, but not a corresponding
+ // supported method
+ rctx.methodNotAllowed = true
+ }
+ }
+
+ // recursively find the next node..
+ fin := xn.findRoute(rctx, method, xsearch)
+ if fin != nil {
+ return fin
+ }
+
+ // Did not find final handler, let's remove the param here if it was set
+ if xn.typ > ntStatic {
+ if len(rctx.routeParams.Values) > 0 {
+ rctx.routeParams.Values = rctx.routeParams.Values[:len(rctx.routeParams.Values)-1]
+ }
+ }
+
+ }
+
+ return nil
+}
+
+func (n *node) findEdge(ntyp nodeTyp, label byte) *node {
+ nds := n.children[ntyp]
+ num := len(nds)
+ idx := 0
+
+ switch ntyp {
+ case ntStatic, ntParam, ntRegexp:
+ i, j := 0, num-1
+ for i <= j {
+ idx = i + (j-i)/2
+ if label > nds[idx].label {
+ i = idx + 1
+ } else if label < nds[idx].label {
+ j = idx - 1
+ } else {
+ i = num // breaks cond
+ }
+ }
+ if nds[idx].label != label {
+ return nil
+ }
+ return nds[idx]
+
+ default: // catch all
+ return nds[idx]
+ }
+}
+
+func (n *node) isLeaf() bool {
+ return n.endpoints != nil
+}
+
+func (n *node) findPattern(pattern string) bool {
+ nn := n
+ for _, nds := range nn.children {
+ if len(nds) == 0 {
+ continue
+ }
+
+ n = nn.findEdge(nds[0].typ, pattern[0])
+ if n == nil {
+ continue
+ }
+
+ var idx int
+ var xpattern string
+
+ switch n.typ {
+ case ntStatic:
+ idx = longestPrefix(pattern, n.prefix)
+ if idx < len(n.prefix) {
+ continue
+ }
+
+ case ntParam, ntRegexp:
+ idx = strings.IndexByte(pattern, '}') + 1
+
+ case ntCatchAll:
+ idx = longestPrefix(pattern, "*")
+
+ default:
+ panic("chi: unknown node type")
+ }
+
+ xpattern = pattern[idx:]
+ if len(xpattern) == 0 {
+ return true
+ }
+
+ return n.findPattern(xpattern)
+ }
+ return false
+}
+
+func (n *node) routes() []Route {
+ rts := []Route{}
+
+ n.walk(func(eps endpoints, subroutes Routes) bool {
+ if eps[mSTUB] != nil && eps[mSTUB].handler != nil && subroutes == nil {
+ return false
+ }
+
+ // Group methodHandlers by unique patterns
+ pats := make(map[string]endpoints)
+
+ for mt, h := range eps {
+ if h.pattern == "" {
+ continue
+ }
+ p, ok := pats[h.pattern]
+ if !ok {
+ p = endpoints{}
+ pats[h.pattern] = p
+ }
+ p[mt] = h
+ }
+
+ for p, mh := range pats {
+ hs := make(map[string]http.Handler)
+ if mh[mALL] != nil && mh[mALL].handler != nil {
+ hs["*"] = mh[mALL].handler
+ }
+
+ for mt, h := range mh {
+ if h.handler == nil {
+ continue
+ }
+ m := methodTypString(mt)
+ if m == "" {
+ continue
+ }
+ hs[m] = h.handler
+ }
+
+ rt := Route{p, hs, subroutes}
+ rts = append(rts, rt)
+ }
+
+ return false
+ })
+
+ return rts
+}
+
+func (n *node) walk(fn func(eps endpoints, subroutes Routes) bool) bool {
+ // Visit the leaf values if any
+ if (n.endpoints != nil || n.subroutes != nil) && fn(n.endpoints, n.subroutes) {
+ return true
+ }
+
+ // Recurse on the children
+ for _, ns := range n.children {
+ for _, cn := range ns {
+ if cn.walk(fn) {
+ return true
+ }
+ }
+ }
+ return false
+}
+
+// patNextSegment returns the next segment details from a pattern:
+// node type, param key, regexp string, param tail byte, param starting index, param ending index
+func patNextSegment(pattern string) (nodeTyp, string, string, byte, int, int) {
+ ps := strings.Index(pattern, "{")
+ ws := strings.Index(pattern, "*")
+
+ if ps < 0 && ws < 0 {
+ return ntStatic, "", "", 0, 0, len(pattern) // we return the entire thing
+ }
+
+ // Sanity check
+ if ps >= 0 && ws >= 0 && ws < ps {
+ panic("chi: wildcard '*' must be the last pattern in a route, otherwise use a '{param}'")
+ }
+
+ var tail byte = '/' // Default endpoint tail to / byte
+
+ if ps >= 0 {
+ // Param/Regexp pattern is next
+ nt := ntParam
+
+ // Read to closing } taking into account opens and closes in curl count (cc)
+ cc := 0
+ pe := ps
+ for i, c := range pattern[ps:] {
+ if c == '{' {
+ cc++
+ } else if c == '}' {
+ cc--
+ if cc == 0 {
+ pe = ps + i
+ break
+ }
+ }
+ }
+ if pe == ps {
+ panic("chi: route param closing delimiter '}' is missing")
+ }
+
+ key := pattern[ps+1 : pe]
+ pe++ // set end to next position
+
+ if pe < len(pattern) {
+ tail = pattern[pe]
+ }
+
+ var rexpat string
+ if idx := strings.Index(key, ":"); idx >= 0 {
+ nt = ntRegexp
+ rexpat = key[idx+1:]
+ key = key[:idx]
+ }
+
+ if len(rexpat) > 0 {
+ if rexpat[0] != '^' {
+ rexpat = "^" + rexpat
+ }
+ if rexpat[len(rexpat)-1] != '$' {
+ rexpat += "$"
+ }
+ }
+
+ return nt, key, rexpat, tail, ps, pe
+ }
+
+ // Wildcard pattern as finale
+ if ws < len(pattern)-1 {
+ panic("chi: wildcard '*' must be the last value in a route. trim trailing text or use a '{param}' instead")
+ }
+ return ntCatchAll, "*", "", 0, ws, len(pattern)
+}
+
+func patParamKeys(pattern string) []string {
+ pat := pattern
+ paramKeys := []string{}
+ for {
+ ptyp, paramKey, _, _, _, e := patNextSegment(pat)
+ if ptyp == ntStatic {
+ return paramKeys
+ }
+ for i := 0; i < len(paramKeys); i++ {
+ if paramKeys[i] == paramKey {
+ panic(fmt.Sprintf("chi: routing pattern '%s' contains duplicate param key, '%s'", pattern, paramKey))
+ }
+ }
+ paramKeys = append(paramKeys, paramKey)
+ pat = pat[e:]
+ }
+}
+
+// longestPrefix finds the length of the shared prefix
+// of two strings
+func longestPrefix(k1, k2 string) int {
+ max := len(k1)
+ if l := len(k2); l < max {
+ max = l
+ }
+ var i int
+ for i = 0; i < max; i++ {
+ if k1[i] != k2[i] {
+ break
+ }
+ }
+ return i
+}
+
+func methodTypString(method methodTyp) string {
+ for s, t := range methodMap {
+ if method == t {
+ return s
+ }
+ }
+ return ""
+}
+
+type nodes []*node
+
+// Sort the list of nodes by label
+func (ns nodes) Sort() { sort.Sort(ns); ns.tailSort() }
+func (ns nodes) Len() int { return len(ns) }
+func (ns nodes) Swap(i, j int) { ns[i], ns[j] = ns[j], ns[i] }
+func (ns nodes) Less(i, j int) bool { return ns[i].label < ns[j].label }
+
+// tailSort pushes nodes with '/' as the tail to the end of the list for param nodes.
+// The list order determines the traversal order.
+func (ns nodes) tailSort() {
+ for i := len(ns) - 1; i >= 0; i-- {
+ if ns[i].typ > ntStatic && ns[i].tail == '/' {
+ ns.Swap(i, len(ns)-1)
+ return
+ }
+ }
+}
+
+func (ns nodes) findEdge(label byte) *node {
+ num := len(ns)
+ idx := 0
+ i, j := 0, num-1
+ for i <= j {
+ idx = i + (j-i)/2
+ if label > ns[idx].label {
+ i = idx + 1
+ } else if label < ns[idx].label {
+ j = idx - 1
+ } else {
+ i = num // breaks cond
+ }
+ }
+ if ns[idx].label != label {
+ return nil
+ }
+ return ns[idx]
+}
+
+// Route describes the details of a routing handler.
+// Handlers map key is an HTTP method
+type Route struct {
+ Pattern string
+ Handlers map[string]http.Handler
+ SubRoutes Routes
+}
+
+// WalkFunc is the type of the function called for each method and route visited by Walk.
+type WalkFunc func(method string, route string, handler http.Handler, middlewares ...func(http.Handler) http.Handler) error
+
+// Walk walks any router tree that implements Routes interface.
+func Walk(r Routes, walkFn WalkFunc) error {
+ return walk(r, walkFn, "")
+}
+
+func walk(r Routes, walkFn WalkFunc, parentRoute string, parentMw ...func(http.Handler) http.Handler) error {
+ for _, route := range r.Routes() {
+ mws := make([]func(http.Handler) http.Handler, len(parentMw))
+ copy(mws, parentMw)
+ mws = append(mws, r.Middlewares()...)
+
+ if route.SubRoutes != nil {
+ if err := walk(route.SubRoutes, walkFn, parentRoute+route.Pattern, mws...); err != nil {
+ return err
+ }
+ continue
+ }
+
+ for method, handler := range route.Handlers {
+ if method == "*" {
+ // Ignore a "catchAll" method, since we pass down all the specific methods for each route.
+ continue
+ }
+
+ fullRoute := parentRoute + route.Pattern
+ fullRoute = strings.Replace(fullRoute, "/*/", "/", -1)
+
+ if chain, ok := handler.(*ChainHandler); ok {
+ if err := walkFn(method, fullRoute, chain.Endpoint, append(mws, chain.Middlewares...)...); err != nil {
+ return err
+ }
+ } else {
+ if err := walkFn(method, fullRoute, handler, mws...); err != nil {
+ return err
+ }
+ }
+ }
+ }
+
+ return nil
+}
diff --git a/vendor/modules.txt b/vendor/modules.txt
index 0c20008fd6..ece7233790 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -269,6 +269,10 @@ github.com/gliderlabs/ssh
github.com/glycerine/go-unsnap-stream
# github.com/go-asn1-ber/asn1-ber v1.5.1
github.com/go-asn1-ber/asn1-ber
+# github.com/go-chi/chi v1.5.0
+## explicit
+github.com/go-chi/chi
+github.com/go-chi/chi/middleware
# github.com/go-enry/go-enry/v2 v2.5.2
## explicit
github.com/go-enry/go-enry/v2