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matchers: support null value in expression matcher

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This commit is contained in:
Mohammed Al Sahaf 2024-05-17 01:11:21 +03:00
parent 44860482d2
commit e8f8fc2948
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1 changed files with 6 additions and 2 deletions
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8
modules/caddyhttp/celmatcher.go
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@ -37,6 +37,7 @@ import (
"github.com/google/cel-go/interpreter/functions"
"github.com/google/cel-go/parser"
"go.uber.org/zap"
"google.golang.org/protobuf/types/known/structpb"
"github.com/caddyserver/caddy/v2"
"github.com/caddyserver/caddy/v2/caddyconfig/caddyfile"
@ -566,8 +567,9 @@ func celMatcherJSONMacroExpander(funcName string) parser.MacroExpander {
if !isStringPlaceholder {
return nil, eh.NewError(entry.ID(), "matcher map keys must be string literals")
}
isNull := entry.AsMapEntry().Value().AsLiteral().Type() == types.NullType
isStringListPlaceholder := isCELStringExpr(entry.AsMapEntry().Value()) ||
isCELStringListLiteral(entry.AsMapEntry().Value())
isCELStringListLiteral(entry.AsMapEntry().Value()) || isNull
if !isStringListPlaceholder {
return nil, eh.NewError(entry.AsMapEntry().Value().ID(), "matcher map values must be string or list literals")
}
@ -598,6 +600,8 @@ func CELValueToMapStrList(data ref.Val) (map[string][]string, error) {
mapStrListStr := make(map[string][]string, len(mapStrIface))
for k, v := range mapStrIface {
switch val := v.(type) {
case structpb.NullValue:
mapStrListStr[k] = nil
case string:
mapStrListStr[k] = []string{val}
case types.String:
@ -704,7 +708,7 @@ var (
placeholderRegexp = regexp.MustCompile(`{([a-zA-Z][\w.-]+)}`)
placeholderExpansion = `caddyPlaceholder(request, "${1}")`
CELTypeJSON = cel.MapType(cel.StringType, cel.DynType)
CELTypeJSON = cel.MapType(cel.StringType, cel.AnyType)
)
var httpRequestObjectType = cel.ObjectType("http.Request")