mirror of https://github.com/grpc/grpc-go.git
333 lines
9.9 KiB
Go
333 lines
9.9 KiB
Go
// +build go1.10
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/*
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*
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* Copyright 2020 gRPC authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*/
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package keys
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import (
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"fmt"
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"strings"
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"testing"
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"github.com/google/go-cmp/cmp"
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rlspb "google.golang.org/grpc/balancer/rls/internal/proto/grpc_lookup_v1"
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"google.golang.org/grpc/metadata"
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)
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var (
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goodKeyBuilder1 = &rlspb.GrpcKeyBuilder{
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Names: []*rlspb.GrpcKeyBuilder_Name{
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{Service: "gFoo"},
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},
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Headers: []*rlspb.NameMatcher{
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{Key: "k1", Names: []string{"n1"}},
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{Key: "k2", Names: []string{"n1"}},
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},
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}
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goodKeyBuilder2 = &rlspb.GrpcKeyBuilder{
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Names: []*rlspb.GrpcKeyBuilder_Name{
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{Service: "gBar", Method: "method1"},
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{Service: "gFoobar"},
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},
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Headers: []*rlspb.NameMatcher{
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{Key: "k1", Names: []string{"n1", "n2"}},
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},
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}
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)
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func TestMakeBuilderMap(t *testing.T) {
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wantBuilderMap1 := map[string]builder{
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"/gFoo/": {matchers: []matcher{{key: "k1", names: []string{"n1"}}, {key: "k2", names: []string{"n1"}}}},
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}
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wantBuilderMap2 := map[string]builder{
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"/gFoo/": {matchers: []matcher{{key: "k1", names: []string{"n1"}}, {key: "k2", names: []string{"n1"}}}},
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"/gBar/method1": {matchers: []matcher{{key: "k1", names: []string{"n1", "n2"}}}},
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"/gFoobar/": {matchers: []matcher{{key: "k1", names: []string{"n1", "n2"}}}},
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}
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tests := []struct {
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desc string
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cfg *rlspb.RouteLookupConfig
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wantBuilderMap BuilderMap
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}{
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{
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desc: "One good GrpcKeyBuilder",
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cfg: &rlspb.RouteLookupConfig{
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GrpcKeybuilders: []*rlspb.GrpcKeyBuilder{goodKeyBuilder1},
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},
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wantBuilderMap: wantBuilderMap1,
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},
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{
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desc: "Two good GrpcKeyBuilders",
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cfg: &rlspb.RouteLookupConfig{
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GrpcKeybuilders: []*rlspb.GrpcKeyBuilder{goodKeyBuilder1, goodKeyBuilder2},
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},
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wantBuilderMap: wantBuilderMap2,
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},
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}
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for _, test := range tests {
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t.Run(test.desc, func(t *testing.T) {
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builderMap, err := MakeBuilderMap(test.cfg)
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if err != nil || !BuilderMapEqual(builderMap, test.wantBuilderMap) {
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t.Errorf("MakeBuilderMap(%+v) returned {%v, %v}, want: {%v, nil}", test.cfg, builderMap, err, test.wantBuilderMap)
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}
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})
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}
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}
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func TestMakeBuilderMapErrors(t *testing.T) {
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emptyServiceKeyBuilder := &rlspb.GrpcKeyBuilder{
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Names: []*rlspb.GrpcKeyBuilder_Name{
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{Service: "bFoo", Method: "method1"},
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{Service: "bBar"},
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{Method: "method1"},
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},
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Headers: []*rlspb.NameMatcher{{Key: "k1", Names: []string{"n1", "n2"}}},
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}
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requiredMatchKeyBuilder := &rlspb.GrpcKeyBuilder{
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Names: []*rlspb.GrpcKeyBuilder_Name{{Service: "bFoo", Method: "method1"}},
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Headers: []*rlspb.NameMatcher{{Key: "k1", Names: []string{"n1", "n2"}, RequiredMatch: true}},
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}
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repeatedHeadersKeyBuilder := &rlspb.GrpcKeyBuilder{
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Names: []*rlspb.GrpcKeyBuilder_Name{
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{Service: "gBar", Method: "method1"},
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{Service: "gFoobar"},
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},
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Headers: []*rlspb.NameMatcher{
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{Key: "k1", Names: []string{"n1", "n2"}},
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{Key: "k1", Names: []string{"n1", "n2"}},
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},
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}
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methodNameWithSlashKeyBuilder := &rlspb.GrpcKeyBuilder{
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Names: []*rlspb.GrpcKeyBuilder_Name{{Service: "gBar", Method: "method1/foo"}},
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Headers: []*rlspb.NameMatcher{{Key: "k1", Names: []string{"n1", "n2"}}},
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}
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tests := []struct {
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desc string
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cfg *rlspb.RouteLookupConfig
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wantErrPrefix string
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}{
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{
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desc: "No GrpcKeyBuilder",
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cfg: &rlspb.RouteLookupConfig{},
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wantErrPrefix: "rls: RouteLookupConfig does not contain any GrpcKeyBuilder",
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},
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{
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desc: "Two GrpcKeyBuilders with same Name",
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cfg: &rlspb.RouteLookupConfig{
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GrpcKeybuilders: []*rlspb.GrpcKeyBuilder{goodKeyBuilder1, goodKeyBuilder1},
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},
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wantErrPrefix: "rls: GrpcKeyBuilder in RouteLookupConfig contains repeated Name field",
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},
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{
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desc: "GrpcKeyBuilder with empty Service field",
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cfg: &rlspb.RouteLookupConfig{
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GrpcKeybuilders: []*rlspb.GrpcKeyBuilder{emptyServiceKeyBuilder, goodKeyBuilder1},
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},
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wantErrPrefix: "rls: GrpcKeyBuilder in RouteLookupConfig contains a Name field with no Service",
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},
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{
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desc: "GrpcKeyBuilder with no Name",
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cfg: &rlspb.RouteLookupConfig{
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GrpcKeybuilders: []*rlspb.GrpcKeyBuilder{{}, goodKeyBuilder1},
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},
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wantErrPrefix: "rls: GrpcKeyBuilder in RouteLookupConfig does not contain any Name",
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},
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{
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desc: "GrpcKeyBuilder with requiredMatch field set",
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cfg: &rlspb.RouteLookupConfig{
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GrpcKeybuilders: []*rlspb.GrpcKeyBuilder{requiredMatchKeyBuilder, goodKeyBuilder1},
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},
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wantErrPrefix: "rls: GrpcKeyBuilder in RouteLookupConfig has required_match field set",
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},
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{
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desc: "GrpcKeyBuilder two headers with same key",
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cfg: &rlspb.RouteLookupConfig{
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GrpcKeybuilders: []*rlspb.GrpcKeyBuilder{repeatedHeadersKeyBuilder, goodKeyBuilder1},
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},
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wantErrPrefix: "rls: GrpcKeyBuilder in RouteLookupConfig contains repeated Key field in headers",
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},
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{
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desc: "GrpcKeyBuilder with slash in method name",
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cfg: &rlspb.RouteLookupConfig{
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GrpcKeybuilders: []*rlspb.GrpcKeyBuilder{methodNameWithSlashKeyBuilder},
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},
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wantErrPrefix: "rls: GrpcKeyBuilder in RouteLookupConfig contains a method with a slash",
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},
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}
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for _, test := range tests {
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t.Run(test.desc, func(t *testing.T) {
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builderMap, err := MakeBuilderMap(test.cfg)
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if builderMap != nil || !strings.HasPrefix(fmt.Sprint(err), test.wantErrPrefix) {
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t.Errorf("MakeBuilderMap(%+v) returned {%v, %v}, want: {nil, %v}", test.cfg, builderMap, err, test.wantErrPrefix)
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}
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})
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}
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}
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func TestRLSKey(t *testing.T) {
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bm, err := MakeBuilderMap(&rlspb.RouteLookupConfig{
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GrpcKeybuilders: []*rlspb.GrpcKeyBuilder{goodKeyBuilder1, goodKeyBuilder2},
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})
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if err != nil {
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t.Fatalf("MakeBuilderMap() failed: %v", err)
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}
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tests := []struct {
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desc string
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path string
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md metadata.MD
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wantKM KeyMap
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}{
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{
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// No keyBuilder is found for the provided service.
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desc: "service not found in key builder map",
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path: "/notFoundService/method",
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md: metadata.Pairs("n1", "v1", "n2", "v2"),
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wantKM: KeyMap{},
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},
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{
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// No keyBuilder is found for the provided method.
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desc: "method not found in key builder map",
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path: "/gBar/notFoundMethod",
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md: metadata.Pairs("n1", "v1", "n2", "v2"),
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wantKM: KeyMap{},
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},
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{
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// A keyBuilder is found, but none of the headers match.
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desc: "directPathMatch-NoMatchingKey",
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path: "/gBar/method1",
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md: metadata.Pairs("notMatchingKey", "v1"),
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wantKM: KeyMap{Map: map[string]string{}, Str: ""},
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},
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{
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// A keyBuilder is found, and a single headers matches.
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desc: "directPathMatch-SingleKey",
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path: "/gBar/method1",
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md: metadata.Pairs("n1", "v1"),
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wantKM: KeyMap{Map: map[string]string{"k1": "v1"}, Str: "k1=v1"},
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},
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{
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// A keyBuilder is found, and multiple headers match, but the first
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// match is chosen.
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desc: "directPathMatch-FirstMatchingKey",
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path: "/gBar/method1",
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md: metadata.Pairs("n2", "v2", "n1", "v1"),
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wantKM: KeyMap{Map: map[string]string{"k1": "v1"}, Str: "k1=v1"},
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},
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{
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// A keyBuilder is found as a wildcard match, but none of the
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// headers match.
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desc: "wildcardPathMatch-NoMatchingKey",
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path: "/gFoobar/method1",
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md: metadata.Pairs("notMatchingKey", "v1"),
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wantKM: KeyMap{Map: map[string]string{}, Str: ""},
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},
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{
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// A keyBuilder is found as a wildcard match, and a single headers
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// matches.
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desc: "wildcardPathMatch-SingleKey",
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path: "/gFoobar/method1",
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md: metadata.Pairs("n1", "v1"),
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wantKM: KeyMap{Map: map[string]string{"k1": "v1"}, Str: "k1=v1"},
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},
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{
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// A keyBuilder is found as a wildcard match, and multiple headers
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// match, but the first match is chosen.
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desc: "wildcardPathMatch-FirstMatchingKey",
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path: "/gFoobar/method1",
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md: metadata.Pairs("n2", "v2", "n1", "v1"),
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wantKM: KeyMap{Map: map[string]string{"k1": "v1"}, Str: "k1=v1"},
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},
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{
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// Multiple matchers find hits in the provided request headers.
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desc: "multipleMatchers",
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path: "/gFoo/method1",
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md: metadata.Pairs("n2", "v2", "n1", "v1"),
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wantKM: KeyMap{Map: map[string]string{"k1": "v1", "k2": "v1"}, Str: "k1=v1,k2=v1"},
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},
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{
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// A match is found for a header which is specified multiple times.
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// So, the values are joined with commas separating them.
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desc: "commaSeparated",
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path: "/gBar/method1",
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md: metadata.Pairs("n1", "v1", "n1", "v2", "n1", "v3"),
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wantKM: KeyMap{Map: map[string]string{"k1": "v1,v2,v3"}, Str: "k1=v1,v2,v3"},
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},
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}
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for _, test := range tests {
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t.Run(test.desc, func(t *testing.T) {
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if gotKM := bm.RLSKey(test.md, test.path); !cmp.Equal(gotKM, test.wantKM) {
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t.Errorf("RLSKey(%+v, %s) = %+v, want %+v", test.md, test.path, gotKM, test.wantKM)
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}
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})
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}
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}
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func TestMapToString(t *testing.T) {
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tests := []struct {
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desc string
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input map[string]string
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wantStr string
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}{
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{
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desc: "empty map",
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input: nil,
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wantStr: "",
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},
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{
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desc: "one key",
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input: map[string]string{
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"k1": "v1",
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},
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wantStr: "k1=v1",
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},
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{
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desc: "sorted keys",
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input: map[string]string{
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"k1": "v1",
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"k2": "v2",
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"k3": "v3",
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},
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wantStr: "k1=v1,k2=v2,k3=v3",
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},
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{
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desc: "unsorted keys",
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input: map[string]string{
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"k3": "v3",
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"k1": "v1",
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"k2": "v2",
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},
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wantStr: "k1=v1,k2=v2,k3=v3",
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},
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}
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for _, test := range tests {
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t.Run(test.desc, func(t *testing.T) {
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if gotStr := mapToString(test.input); gotStr != test.wantStr {
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t.Errorf("mapToString(%v) = %s, want %s", test.input, gotStr, test.wantStr)
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}
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})
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}
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}
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