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plugin/metadata: metadata is just label=value (#1914)

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This revert 17d807f0 and re-adds the metadata plugin as a plugin that
just sets a label to a value function.

Add package documentation on how to use the metadata package. Make it
clear that any caching is up to the Func implemented.

There are now - no in tree users. We could add the request metadata by
default under names that copy request.Request, i.e

request/ip - remote IP
request/port - remote port

Variables.go has been deleted.

Signed-off-by: Miek Gieben <miek@miek.nl>
This commit is contained in:
Miek Gieben
2018-07-01 20:01:17 +01:00
committed by GitHub
parent 0b326e2686
commit 99800a687c
16 changed files with 229 additions and 371 deletions
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3
plugin/rewrite/class.go
View File

@@ -1,7 +1,6 @@
package rewrite
import (
"context"
"fmt"
"strings"
@@ -28,7 +27,7 @@ func newClassRule(nextAction string, args ...string) (Rule, error) {
}
// Rewrite rewrites the the current request.
func (rule *classRule) Rewrite(ctx context.Context, w dns.ResponseWriter, r *dns.Msg) Result {
func (rule *classRule) Rewrite(w dns.ResponseWriter, r *dns.Msg) Result {
if rule.fromClass > 0 && rule.toClass > 0 {
if r.Question[0].Qclass == rule.fromClass {
r.Question[0].Qclass = rule.toClass