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reverseproxy: Add handle_response blocks to reverse_proxy (#3710) (#4021)

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* reverseproxy: Add `handle_response` blocks to `reverse_proxy` (#3710)

* reverseproxy: complete handle_response test

* reverseproxy: Change handle_response matchers to use named matchers

reverseproxy: Add support for changing status code

* fastcgi: Remove obsolete TODO

We already have d.Err("transport already specified") in the reverse_proxy parsing code which covers this case

* reverseproxy: Fix support for "4xx" type status codes

* Apply suggestions from code review

Co-authored-by: Matt Holt <mholt@users.noreply.github.com>

* caddyhttp: Reorganize response matchers

* reverseproxy: Reintroduce caddyfile.Unmarshaler

* reverseproxy: Add comment mentioning Finalize should be called

Co-authored-by: Maxime Soulé <btik-git@scoubidou.com>
Co-authored-by: Matt Holt <mholt@users.noreply.github.com>
This commit is contained in:
Francis Lavoie 2021-05-02 14:39:06 -04:00 committed by GitHub
parent e6f6d3a476
commit e4a22de9d1
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
10 changed files with 635 additions and 253 deletions
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7
caddyconfig/httpcaddyfile/directives.go
View file

@ -265,6 +265,13 @@ func (h Helper) NewBindAddresses(addrs []string) []ConfigValue {
return []ConfigValue{{Class: "bind", Value: addrs}}
}
// WithDispenser returns a new instance based on d. All others Helper
// fields are copied, so typically maps are shared with this new instance.
func (h Helper) WithDispenser(d *caddyfile.Dispenser) Helper {
h.Dispenser = d
return h
}
// ParseSegmentAsSubroute parses the segment such that its subdirectives
// are themselves treated as directives, from which a subroute is built
// and returned.

193
caddytest/integration/caddyfile_adapt/reverse_proxy_handle_response.txt Normal file
View file

@ -0,0 +1,193 @@
:8884
reverse_proxy 127.0.0.1:65535 {
@accel header X-Accel-Redirect *
handle_response @accel {
respond "Header X-Accel-Redirect!"
}
@another {
header X-Another *
}
handle_response @another {
respond "Header X-Another!"
}
@401 status 401
handle_response @401 {
respond "Status 401!"
}
handle_response {
respond "Any! This should be last in the JSON!"
}
@403 {
status 403
}
handle_response @403 {
respond "Status 403!"
}
@multi {
status 401 403
status 404
header Foo *
header Bar *
}
handle_response @multi {
respond "Headers Foo, Bar AND statuses 401, 403 and 404!"
}
@changeStatus status 500
handle_response @changeStatus 400
}
----------
{
"apps": {
"http": {
"servers": {
"srv0": {
"listen": [
":8884"
],
"routes": [
{
"handle": [
{
"handle_response": [
{
"match": {
"headers": {
"X-Accel-Redirect": [
"*"
]
}
},
"routes": [
{
"handle": [
{
"body": "Header X-Accel-Redirect!",
"handler": "static_response"
}
]
}
]
},
{
"match": {
"headers": {
"X-Another": [
"*"
]
}
},
"routes": [
{
"handle": [
{
"body": "Header X-Another!",
"handler": "static_response"
}
]
}
]
},
{
"match": {
"status_code": [
401
]
},
"routes": [
{
"handle": [
{
"body": "Status 401!",
"handler": "static_response"
}
]
}
]
},
{
"match": {
"status_code": [
403
]
},
"routes": [
{
"handle": [
{
"body": "Status 403!",
"handler": "static_response"
}
]
}
]
},
{
"match": {
"headers": {
"Bar": [
"*"
],
"Foo": [
"*"
]
},
"status_code": [
401,
403,
404
]
},
"routes": [
{
"handle": [
{
"body": "Headers Foo, Bar AND statuses 401, 403 and 404!",
"handler": "static_response"
}
]
}
]
},
{
"match": {
"status_code": [
500
]
},
"status_code": 400
},
{
"routes": [
{
"handle": [
{
"body": "Any! This should be last in the JSON!",
"handler": "static_response"
}
]
}
]
}
],
"handler": "reverse_proxy",
"upstreams": [
{
"dial": "127.0.0.1:65535"
}
]
}
]
}
]
}
}
}
}
}

69
modules/caddyhttp/encode/caddyfile.go
View file

@ -15,9 +15,7 @@
package encode
import (
"net/http"
"strconv"
"strings"
"github.com/caddyserver/caddy/v2"
"github.com/caddyserver/caddy/v2/caddyconfig"
@ -95,7 +93,7 @@ func (enc *Encode) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
}
enc.Prefer = encs
case "match":
err := enc.parseNamedResponseMatcher(d.NewFromNextSegment(), responseMatchers)
err := caddyhttp.ParseNamedResponseMatcher(d.NewFromNextSegment(), responseMatchers)
if err != nil {
return err
}
@ -123,70 +121,5 @@ func (enc *Encode) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
return nil
}
// Parse the tokens of a named response matcher.
//
// match {
// header <field> [<value>]
// status <code...>
// }
//
// Or, single line syntax:
//
// match [header <field> [<value>]] | [status <code...>]
//
func (enc *Encode) parseNamedResponseMatcher(d *caddyfile.Dispenser, matchers map[string]caddyhttp.ResponseMatcher) error {
for d.Next() {
definitionName := d.Val()
if _, ok := matchers[definitionName]; ok {
return d.Errf("matcher is defined more than once: %s", definitionName)
}
matcher := caddyhttp.ResponseMatcher{}
for nesting := d.Nesting(); d.NextArg() || d.NextBlock(nesting); {
switch d.Val() {
case "header":
if matcher.Headers == nil {
matcher.Headers = http.Header{}
}
// reuse the header request matcher's unmarshaler
headerMatcher := caddyhttp.MatchHeader(matcher.Headers)
err := headerMatcher.UnmarshalCaddyfile(d.NewFromNextSegment())
if err != nil {
return err
}
matcher.Headers = http.Header(headerMatcher)
case "status":
if matcher.StatusCode == nil {
matcher.StatusCode = []int{}
}
args := d.RemainingArgs()
if len(args) == 0 {
return d.ArgErr()
}
for _, arg := range args {
if len(arg) == 3 && strings.HasSuffix(arg, "xx") {
arg = arg[:1]
}
statusNum, err := strconv.Atoi(arg)
if err != nil {
return d.Errf("bad status value '%s': %v", arg, err)
}
matcher.StatusCode = append(matcher.StatusCode, statusNum)
}
default:
return d.Errf("unrecognized response matcher %s", d.Val())
}
}
matchers[definitionName] = matcher
}
return nil
}
// Interface guard
var _ caddyfile.Unmarshaler = (*Encode)(nil)

34
modules/caddyhttp/matchers.go
View file

@ -971,40 +971,6 @@ func (mre *MatchRegexp) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
return nil
}
// ResponseMatcher is a type which can determine if an
// HTTP response matches some criteria.
type ResponseMatcher struct {
// If set, one of these status codes would be required.
// A one-digit status can be used to represent all codes
// in that class (e.g. 3 for all 3xx codes).
StatusCode []int `json:"status_code,omitempty"`
// If set, each header specified must be one of the
// specified values, with the same logic used by the
// request header matcher.
Headers http.Header `json:"headers,omitempty"`
}
// Match returns true if the given statusCode and hdr match rm.
func (rm ResponseMatcher) Match(statusCode int, hdr http.Header) bool {
if !rm.matchStatusCode(statusCode) {
return false
}
return matchHeaders(hdr, rm.Headers, "", nil)
}
func (rm ResponseMatcher) matchStatusCode(statusCode int) bool {
if rm.StatusCode == nil {
return true
}
for _, code := range rm.StatusCode {
if StatusCodeMatches(statusCode, code) {
return true
}
}
return false
}
var wordRE = regexp.MustCompile(`\w+`)
const regexpPlaceholderPrefix = "http.regexp"

149
modules/caddyhttp/matchers_test.go
View file

@ -804,155 +804,6 @@ func TestVarREMatcher(t *testing.T) {
}
}
func TestResponseMatcher(t *testing.T) {
for i, tc := range []struct {
require ResponseMatcher
status int
hdr http.Header // make sure these are canonical cased (std lib will do that in a real request)
expect bool
}{
{
require: ResponseMatcher{},
status: 200,
expect: true,
},
{
require: ResponseMatcher{
StatusCode: []int{200},
},
status: 200,
expect: true,
},
{
require: ResponseMatcher{
StatusCode: []int{2},
},
status: 200,
expect: true,
},
{
require: ResponseMatcher{
StatusCode: []int{201},
},
status: 200,
expect: false,
},
{
require: ResponseMatcher{
StatusCode: []int{2},
},
status: 301,
expect: false,
},
{
require: ResponseMatcher{
StatusCode: []int{3},
},
status: 301,
expect: true,
},
{
require: ResponseMatcher{
StatusCode: []int{3},
},
status: 399,
expect: true,
},
{
require: ResponseMatcher{
StatusCode: []int{3},
},
status: 400,
expect: false,
},
{
require: ResponseMatcher{
StatusCode: []int{3, 4},
},
status: 400,
expect: true,
},
{
require: ResponseMatcher{
StatusCode: []int{3, 401},
},
status: 401,
expect: true,
},
{
require: ResponseMatcher{
Headers: http.Header{
"Foo": []string{"bar"},
},
},
hdr: http.Header{"Foo": []string{"bar"}},
expect: true,
},
{
require: ResponseMatcher{
Headers: http.Header{
"Foo2": []string{"bar"},
},
},
hdr: http.Header{"Foo": []string{"bar"}},
expect: false,
},
{
require: ResponseMatcher{
Headers: http.Header{
"Foo": []string{"bar", "baz"},
},
},
hdr: http.Header{"Foo": []string{"baz"}},
expect: true,
},
{
require: ResponseMatcher{
Headers: http.Header{
"Foo": []string{"bar"},
"Foo2": []string{"baz"},
},
},
hdr: http.Header{"Foo": []string{"baz"}},
expect: false,
},
{
require: ResponseMatcher{
Headers: http.Header{
"Foo": []string{"bar"},
"Foo2": []string{"baz"},
},
},
hdr: http.Header{"Foo": []string{"bar"}, "Foo2": []string{"baz"}},
expect: true,
},
{
require: ResponseMatcher{
Headers: http.Header{
"Foo": []string{"foo*"},
},
},
hdr: http.Header{"Foo": []string{"foobar"}},
expect: true,
},
{
require: ResponseMatcher{
Headers: http.Header{
"Foo": []string{"foo*"},
},
},
hdr: http.Header{"Foo": []string{"foobar"}},
expect: true,
},
} {
actual := tc.require.Match(tc.status, tc.hdr)
if actual != tc.expect {
t.Errorf("Test %d %v: Expected %t, got %t for HTTP %d %v", i, tc.require, tc.expect, actual, tc.status, tc.hdr)
continue
}
}
}
func TestNotMatcher(t *testing.T) {
for i, tc := range []struct {
host, path string

122
modules/caddyhttp/responsematchers.go Normal file
View file

@ -0,0 +1,122 @@
// Copyright 2015 Matthew Holt and The Caddy Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package caddyhttp
import (
"net/http"
"strconv"
"strings"
"github.com/caddyserver/caddy/v2/caddyconfig/caddyfile"
)
// ResponseMatcher is a type which can determine if an
// HTTP response matches some criteria.
type ResponseMatcher struct {
// If set, one of these status codes would be required.
// A one-digit status can be used to represent all codes
// in that class (e.g. 3 for all 3xx codes).
StatusCode []int `json:"status_code,omitempty"`
// If set, each header specified must be one of the
// specified values, with the same logic used by the
// request header matcher.
Headers http.Header `json:"headers,omitempty"`
}
// Match returns true if the given statusCode and hdr match rm.
func (rm ResponseMatcher) Match(statusCode int, hdr http.Header) bool {
if !rm.matchStatusCode(statusCode) {
return false
}
return matchHeaders(hdr, rm.Headers, "", nil)
}
func (rm ResponseMatcher) matchStatusCode(statusCode int) bool {
if rm.StatusCode == nil {
return true
}
for _, code := range rm.StatusCode {
if StatusCodeMatches(statusCode, code) {
return true
}
}
return false
}
// ParseNamedResponseMatcher parses the tokens of a named response matcher.
//
// @name {
// header <field> [<value>]
// status <code...>
// }
//
// Or, single line syntax:
//
// @name [header <field> [<value>]] | [status <code...>]
//
func ParseNamedResponseMatcher(d *caddyfile.Dispenser, matchers map[string]ResponseMatcher) error {
for d.Next() {
definitionName := d.Val()
if _, ok := matchers[definitionName]; ok {
return d.Errf("matcher is defined more than once: %s", definitionName)
}
matcher := ResponseMatcher{}
for nesting := d.Nesting(); d.NextArg() || d.NextBlock(nesting); {
switch d.Val() {
case "header":
if matcher.Headers == nil {
matcher.Headers = http.Header{}
}
// reuse the header request matcher's unmarshaler
headerMatcher := MatchHeader(matcher.Headers)
err := headerMatcher.UnmarshalCaddyfile(d.NewFromNextSegment())
if err != nil {
return err
}
matcher.Headers = http.Header(headerMatcher)
case "status":
if matcher.StatusCode == nil {
matcher.StatusCode = []int{}
}
args := d.RemainingArgs()
if len(args) == 0 {
return d.ArgErr()
}
for _, arg := range args {
if len(arg) == 3 && strings.HasSuffix(arg, "xx") {
arg = arg[:1]
}
statusNum, err := strconv.Atoi(arg)
if err != nil {
return d.Errf("bad status value '%s': %v", arg, err)
}
matcher.StatusCode = append(matcher.StatusCode, statusNum)
}
default:
return d.Errf("unrecognized response matcher %s", d.Val())
}
}
matchers[definitionName] = matcher
}
return nil
}

169
modules/caddyhttp/responsematchers_test.go Normal file
View file

@ -0,0 +1,169 @@
// Copyright 2015 Matthew Holt and The Caddy Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package caddyhttp
import (
"net/http"
"testing"
)
func TestResponseMatcher(t *testing.T) {
for i, tc := range []struct {
require ResponseMatcher
status int
hdr http.Header // make sure these are canonical cased (std lib will do that in a real request)
expect bool
}{
{
require: ResponseMatcher{},
status: 200,
expect: true,
},
{
require: ResponseMatcher{
StatusCode: []int{200},
},
status: 200,
expect: true,
},
{
require: ResponseMatcher{
StatusCode: []int{2},
},
status: 200,
expect: true,
},
{
require: ResponseMatcher{
StatusCode: []int{201},
},
status: 200,
expect: false,
},
{
require: ResponseMatcher{
StatusCode: []int{2},
},
status: 301,
expect: false,
},
{
require: ResponseMatcher{
StatusCode: []int{3},
},
status: 301,
expect: true,
},
{
require: ResponseMatcher{
StatusCode: []int{3},
},
status: 399,
expect: true,
},
{
require: ResponseMatcher{
StatusCode: []int{3},
},
status: 400,
expect: false,
},
{
require: ResponseMatcher{
StatusCode: []int{3, 4},
},
status: 400,
expect: true,
},
{
require: ResponseMatcher{
StatusCode: []int{3, 401},
},
status: 401,
expect: true,
},
{
require: ResponseMatcher{
Headers: http.Header{
"Foo": []string{"bar"},
},
},
hdr: http.Header{"Foo": []string{"bar"}},
expect: true,
},
{
require: ResponseMatcher{
Headers: http.Header{
"Foo2": []string{"bar"},
},
},
hdr: http.Header{"Foo": []string{"bar"}},
expect: false,
},
{
require: ResponseMatcher{
Headers: http.Header{
"Foo": []string{"bar", "baz"},
},
},
hdr: http.Header{"Foo": []string{"baz"}},
expect: true,
},
{
require: ResponseMatcher{
Headers: http.Header{
"Foo": []string{"bar"},
"Foo2": []string{"baz"},
},
},
hdr: http.Header{"Foo": []string{"baz"}},
expect: false,
},
{
require: ResponseMatcher{
Headers: http.Header{
"Foo": []string{"bar"},
"Foo2": []string{"baz"},
},
},
hdr: http.Header{"Foo": []string{"bar"}, "Foo2": []string{"baz"}},
expect: true,
},
{
require: ResponseMatcher{
Headers: http.Header{
"Foo": []string{"foo*"},
},
},
hdr: http.Header{"Foo": []string{"foobar"}},
expect: true,
},
{
require: ResponseMatcher{
Headers: http.Header{
"Foo": []string{"foo*"},
},
},
hdr: http.Header{"Foo": []string{"foobar"}},
expect: true,
},
} {
actual := tc.require.Match(tc.status, tc.hdr)
if actual != tc.expect {
t.Errorf("Test %d %v: Expected %t, got %t for HTTP %d %v", i, tc.require, tc.expect, actual, tc.status, tc.hdr)
continue
}
}
}

132
modules/caddyhttp/reverseproxy/caddyfile.go
View file

@ -42,6 +42,10 @@ func parseCaddyfile(h httpcaddyfile.Helper) (caddyhttp.MiddlewareHandler, error)
if err != nil {
return nil, err
}
err = rp.FinalizeUnmarshalCaddyfile(h)
if err != nil {
return nil, err
}
return rp, nil
}
@ -86,12 +90,24 @@ func parseCaddyfile(h httpcaddyfile.Helper) (caddyhttp.MiddlewareHandler, error)
// transport <name> {
// ...
// }
//
// # handle responses
// @name {
// status <code...>
// header <field> [<value>]
// }
// handle_response [<matcher>] [status_code] {
// <directives...>
// }
// }
//
// Proxy upstream addresses should be network dial addresses such
// as `host:port`, or a URL such as `scheme://host:port`. Scheme
// and port may be inferred from other parts of the address/URL; if
// either are missing, defaults to HTTP.
//
// The FinalizeUnmarshalCaddyfile method should be called after this
// to finalize parsing of "handle_response" blocks, if possible.
func (h *Handler) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
// currently, all backends must use the same scheme/protocol (the
// underlying JSON does not yet support per-backend transports)
@ -102,6 +118,10 @@ func (h *Handler) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
var transport http.RoundTripper
var transportModuleName string
// collect the response matchers defined as subdirectives
// prefixed with "@" for use with "handle_response" blocks
h.responseMatchers = make(map[string]caddyhttp.ResponseMatcher)
// TODO: the logic in this function is kind of sensitive, we need
// to write tests before making any more changes to it
upstreamDialAddress := func(upstreamAddr string) (string, error) {
@ -227,6 +247,16 @@ func (h *Handler) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
}
for d.NextBlock(0) {
// if the subdirective has an "@" prefix then we
// parse it as a response matcher for use with "handle_response"
if strings.HasPrefix(d.Val(), matcherPrefix) {
err := caddyhttp.ParseNamedResponseMatcher(d.NewFromNextSegment(), h.responseMatchers)
if err != nil {
return err
}
continue
}
switch d.Val() {
case "to":
args := d.RemainingArgs()
@ -617,6 +647,12 @@ func (h *Handler) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
}
transport = rt
case "handle_response":
// delegate the parsing of handle_response to the caller,
// since we need the httpcaddyfile.Helper to parse subroutes.
// See h.FinalizeUnmarshalCaddyfile
h.handleResponseSegments = append(h.handleResponseSegments, d.NewFromNextSegment())
default:
return d.Errf("unrecognized subdirective %s", d.Val())
}
@ -659,6 +695,100 @@ func (h *Handler) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
return nil
}
// FinalizeUnmarshalCaddyfile finalizes the Caddyfile parsing which
// requires having an httpcaddyfile.Helper to function, to parse subroutes.
func (h *Handler) FinalizeUnmarshalCaddyfile(helper httpcaddyfile.Helper) error {
for _, d := range h.handleResponseSegments {
// consume the "handle_response" token
d.Next()
var matcher *caddyhttp.ResponseMatcher
args := d.RemainingArgs()
// the first arg should be a matcher (optional)
// the second arg should be a status code (optional)
// any more than that isn't currently supported
if len(args) > 2 {
return d.Errf("too many arguments for 'handle_response': %s", args)
}
// the first arg should always be a matcher.
// it doesn't really make sense to support status code without a matcher.
if len(args) > 0 {
if !strings.HasPrefix(args[0], matcherPrefix) {
return d.Errf("must use a named response matcher, starting with '@'")
}
foundMatcher, ok := h.responseMatchers[args[0]]
if !ok {
return d.Errf("no named response matcher defined with name '%s'", args[0][1:])
}
matcher = &foundMatcher
}
// a second arg should be a status code, in which case
// we skip parsing the block for routes
if len(args) == 2 {
_, err := strconv.Atoi(args[1])
if err != nil {
return d.Errf("bad integer value '%s': %v", args[1], err)
}
// make sure there's no block, cause it doesn't make sense
if d.NextBlock(1) {
return d.Errf("cannot define routes for 'handle_response' when changing the status code")
}
h.HandleResponse = append(
h.HandleResponse,
caddyhttp.ResponseHandler{
Match: matcher,
StatusCode: caddyhttp.WeakString(args[1]),
},
)
continue
}
// parse the block as routes
handler, err := httpcaddyfile.ParseSegmentAsSubroute(helper.WithDispenser(d.NewFromNextSegment()))
if err != nil {
return err
}
subroute, ok := handler.(*caddyhttp.Subroute)
if !ok {
return helper.Errf("segment was not parsed as a subroute")
}
h.HandleResponse = append(
h.HandleResponse,
caddyhttp.ResponseHandler{
Match: matcher,
Routes: subroute.Routes,
},
)
}
// move the handle_response entries without a matcher to the end.
// we can't use sort.SliceStable because it will reorder the rest of the
// entries which may be undesirable because we don't have a good
// heuristic to use for sorting.
withoutMatchers := []caddyhttp.ResponseHandler{}
withMatchers := []caddyhttp.ResponseHandler{}
for _, hr := range h.HandleResponse {
if hr.Match == nil {
withoutMatchers = append(withoutMatchers, hr)
} else {
withMatchers = append(withMatchers, hr)
}
}
h.HandleResponse = append(withMatchers, withoutMatchers...)
// clean up the bits we only needed for adapting
h.handleResponseSegments = nil
h.responseMatchers = nil
return nil
}
// UnmarshalCaddyfile deserializes Caddyfile tokens into h.
//
// transport http {
@ -892,6 +1022,8 @@ func (h *HTTPTransport) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
return nil
}
const matcherPrefix = "@"
// Interface guards
var (
_ caddyfile.Unmarshaler = (*Handler)(nil)

6
modules/caddyhttp/reverseproxy/fastcgi/caddyfile.go
View file

@ -353,12 +353,14 @@ func parsePHPFastCGI(h httpcaddyfile.Helper) ([]httpcaddyfile.ConfigValue, error
// the rest of the config is specified by the user
// using the reverse_proxy directive syntax
// TODO: this can overwrite our fcgiTransport that we encoded and
// set on the rpHandler... even with a non-fastcgi transport!
err = rpHandler.UnmarshalCaddyfile(dispenser)
if err != nil {
return nil, err
}
err = rpHandler.FinalizeUnmarshalCaddyfile(h)
if err != nil {
return nil, err
}
// create the final reverse proxy route which is
// conditional on matching PHP files

7
modules/caddyhttp/reverseproxy/reverseproxy.go
View file

@ -31,6 +31,7 @@ import (
"time"
"github.com/caddyserver/caddy/v2"
"github.com/caddyserver/caddy/v2/caddyconfig/caddyfile"
"github.com/caddyserver/caddy/v2/modules/caddyhttp"
"github.com/caddyserver/caddy/v2/modules/caddyhttp/headers"
"go.uber.org/zap"
@ -127,6 +128,12 @@ type Handler struct {
Transport http.RoundTripper `json:"-"`
CB CircuitBreaker `json:"-"`
// Holds the named response matchers from the Caddyfile while adapting
responseMatchers map[string]caddyhttp.ResponseMatcher
// Holds the handle_response Caddyfile tokens while adapting
handleResponseSegments []*caddyfile.Dispenser
ctx caddy.Context
logger *zap.Logger
}