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plugin/rewrite: support opt-in metadata in regex name replacements (#8665)

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* plugin/rewrite: support opt-in metadata in regex name replacements

Signed-off-by: houyuwushang <180804215+houyuwushang@users.noreply.github.com>

* test: separate CoreDNS and third-party imports

Signed-off-by: houyuwushang <180804215+houyuwushang@users.noreply.github.com>

---------

Signed-off-by: houyuwushang <180804215+houyuwushang@users.noreply.github.com>
This commit is contained in:
houyuwushang
2026-10-19 18:54:15 +08:00
committed by GitHub
parent 6db8bf8d80
commit 1550b867f7
4 changed files with 333 additions and 2 deletions
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15
plugin/rewrite/name.go
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@@ -336,8 +336,16 @@ func newNameRule(nextAction string, args ...string) (Rule, error) {
var err error
var answers ResponseRules
auto := false
if len(args) > 3 {
auto, answers, err = parseAnswerRules(matchType, args[3:])
answerStart := 3
withMetadata := len(args) > 3 && args[3] == "metadata"
if withMetadata {
if matchType != RegexMatch {
return nil, fmt.Errorf("metadata is only supported for regex name rules")
}
answerStart++
}
if len(args) > answerStart {
auto, answers, err = parseAnswerRules(matchType, args[answerStart:])
if err != nil {
return nil, err
}
@@ -356,6 +364,9 @@ func newNameRule(nextAction string, args ...string) (Rule, error) {
case SubstringMatch:
return newSubstringNameRule(nextAction, auto, rewriteQuestionFrom, rewriteQuestionTo, answers), nil
case RegexMatch:
if withMetadata {
return newMetadataNameRule(nextAction, auto, rewriteQuestionFrom, rewriteQuestionTo, answers)
}
rewriteQuestionFromPattern, err := isValidRegexPattern(rewriteQuestionFrom, rewriteQuestionTo)
if err != nil {
return nil, err