| /* |
| * |
| * Copyright 2020 gRPC 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 xdsrouting |
| |
| import ( |
| "testing" |
| |
| "github.com/google/go-cmp/cmp" |
| "google.golang.org/grpc/balancer" |
| internalserviceconfig "google.golang.org/grpc/internal/serviceconfig" |
| _ "google.golang.org/grpc/xds/internal/balancer/cdsbalancer" |
| _ "google.golang.org/grpc/xds/internal/balancer/weightedtarget" |
| ) |
| |
| const ( |
| testJSONConfig = `{ |
| "action":{ |
| "cds:cluster_1":{ |
| "childPolicy":[{ |
| "cds_experimental":{"cluster":"cluster_1"} |
| }] |
| }, |
| "weighted:cluster_1_cluster_2_1":{ |
| "childPolicy":[{ |
| "weighted_target_experimental":{ |
| "targets": { |
| "cluster_1" : { |
| "weight":75, |
| "childPolicy":[{"cds_experimental":{"cluster":"cluster_1"}}] |
| }, |
| "cluster_2" : { |
| "weight":25, |
| "childPolicy":[{"cds_experimental":{"cluster":"cluster_2"}}] |
| } |
| } |
| } |
| }] |
| }, |
| "weighted:cluster_1_cluster_3_1":{ |
| "childPolicy":[{ |
| "weighted_target_experimental":{ |
| "targets": { |
| "cluster_1": { |
| "weight":99, |
| "childPolicy":[{"cds_experimental":{"cluster":"cluster_1"}}] |
| }, |
| "cluster_3": { |
| "weight":1, |
| "childPolicy":[{"cds_experimental":{"cluster":"cluster_3"}}] |
| } |
| } |
| } |
| }] |
| } |
| }, |
| |
| "route":[{ |
| "path":"/service_1/method_1", |
| "action":"cds:cluster_1" |
| }, |
| { |
| "path":"/service_1/method_2", |
| "action":"cds:cluster_1" |
| }, |
| { |
| "prefix":"/service_2/method_1", |
| "action":"weighted:cluster_1_cluster_2_1" |
| }, |
| { |
| "prefix":"/service_2", |
| "action":"weighted:cluster_1_cluster_2_1" |
| }, |
| { |
| "regex":"^/service_2/method_3$", |
| "action":"weighted:cluster_1_cluster_3_1" |
| }] |
| } |
| ` |
| |
| testJSONConfigWithAllMatchers = `{ |
| "action":{ |
| "cds:cluster_1":{ |
| "childPolicy":[{ |
| "cds_experimental":{"cluster":"cluster_1"} |
| }] |
| }, |
| "cds:cluster_2":{ |
| "childPolicy":[{ |
| "cds_experimental":{"cluster":"cluster_2"} |
| }] |
| }, |
| "cds:cluster_3":{ |
| "childPolicy":[{ |
| "cds_experimental":{"cluster":"cluster_3"} |
| }] |
| } |
| }, |
| |
| "route":[{ |
| "path":"/service_1/method_1", |
| "action":"cds:cluster_1" |
| }, |
| { |
| "prefix":"/service_2/method_1", |
| "action":"cds:cluster_1" |
| }, |
| { |
| "regex":"^/service_2/method_3$", |
| "action":"cds:cluster_1" |
| }, |
| { |
| "prefix":"", |
| "headers":[{"name":"header-1", "exactMatch":"value-1", "invertMatch":true}], |
| "action":"cds:cluster_2" |
| }, |
| { |
| "prefix":"", |
| "headers":[{"name":"header-1", "regexMatch":"^value-1$"}], |
| "action":"cds:cluster_2" |
| }, |
| { |
| "prefix":"", |
| "headers":[{"name":"header-1", "rangeMatch":{"start":-1, "end":7}}], |
| "action":"cds:cluster_3" |
| }, |
| { |
| "prefix":"", |
| "headers":[{"name":"header-1", "presentMatch":true}], |
| "action":"cds:cluster_3" |
| }, |
| { |
| "prefix":"", |
| "headers":[{"name":"header-1", "prefixMatch":"value-1"}], |
| "action":"cds:cluster_2" |
| }, |
| { |
| "prefix":"", |
| "headers":[{"name":"header-1", "suffixMatch":"value-1"}], |
| "action":"cds:cluster_2" |
| }, |
| { |
| "prefix":"", |
| "matchFraction":{"value": 31415}, |
| "action":"cds:cluster_3" |
| }] |
| } |
| ` |
| |
| cdsName = "cds_experimental" |
| wtName = "weighted_target_experimental" |
| ) |
| |
| var ( |
| cdsConfigParser = balancer.Get(cdsName).(balancer.ConfigParser) |
| cdsConfigJSON1 = `{"cluster":"cluster_1"}` |
| cdsConfig1, _ = cdsConfigParser.ParseConfig([]byte(cdsConfigJSON1)) |
| cdsConfigJSON2 = `{"cluster":"cluster_2"}` |
| cdsConfig2, _ = cdsConfigParser.ParseConfig([]byte(cdsConfigJSON2)) |
| cdsConfigJSON3 = `{"cluster":"cluster_3"}` |
| cdsConfig3, _ = cdsConfigParser.ParseConfig([]byte(cdsConfigJSON3)) |
| |
| wtConfigParser = balancer.Get(wtName).(balancer.ConfigParser) |
| wtConfigJSON1 = `{ |
| "targets": { |
| "cluster_1" : { "weight":75, "childPolicy":[{"cds_experimental":{"cluster":"cluster_1"}}] }, |
| "cluster_2" : { "weight":25, "childPolicy":[{"cds_experimental":{"cluster":"cluster_2"}}] } |
| } }` |
| wtConfig1, _ = wtConfigParser.ParseConfig([]byte(wtConfigJSON1)) |
| wtConfigJSON2 = `{ |
| "targets": { |
| "cluster_1": { "weight":99, "childPolicy":[{"cds_experimental":{"cluster":"cluster_1"}}] }, |
| "cluster_3": { "weight":1, "childPolicy":[{"cds_experimental":{"cluster":"cluster_3"}}] } |
| } }` |
| wtConfig2, _ = wtConfigParser.ParseConfig([]byte(wtConfigJSON2)) |
| ) |
| |
| func Test_parseConfig(t *testing.T) { |
| tests := []struct { |
| name string |
| js string |
| want *lbConfig |
| wantErr bool |
| }{ |
| { |
| name: "empty json", |
| js: "", |
| want: nil, |
| wantErr: true, |
| }, |
| { |
| name: "more than one path matcher", // Path matcher is oneof, so this is an error. |
| js: `{ |
| "Action":{ |
| "cds:cluster_1":{ "childPolicy":[{ "cds_experimental":{"cluster":"cluster_1"} }]} |
| }, |
| "Route": [{ |
| "path":"/service_1/method_1", |
| "prefix":"/service_1/", |
| "action":"cds:cluster_1" |
| }] |
| }`, |
| want: nil, |
| wantErr: true, |
| }, |
| { |
| name: "no path matcher", |
| js: `{ |
| "Action":{ |
| "cds:cluster_1":{ "childPolicy":[{ "cds_experimental":{"cluster":"cluster_1"} }]} |
| }, |
| "Route": [{ |
| "action":"cds:cluster_1" |
| }] |
| }`, |
| want: nil, |
| wantErr: true, |
| }, |
| { |
| name: "route action not found in action list", |
| js: `{ |
| "Action":{}, |
| "Route": [{ |
| "path":"/service_1/method_1", |
| "action":"cds:cluster_1" |
| }] |
| }`, |
| want: nil, |
| wantErr: true, |
| }, |
| { |
| name: "action list contains action not used", |
| js: `{ |
| "Action":{ |
| "cds:cluster_1":{ "childPolicy":[{ "cds_experimental":{"cluster":"cluster_1"} }]}, |
| "cds:cluster_not_used":{ "childPolicy":[{ "cds_experimental":{"cluster":"cluster_1"} }]} |
| }, |
| "Route": [{ |
| "path":"/service_1/method_1", |
| "action":"cds:cluster_1" |
| }] |
| }`, |
| want: nil, |
| wantErr: true, |
| }, |
| |
| { |
| name: "no header specifier in header matcher", |
| js: `{ |
| "Action":{ |
| "cds:cluster_1":{ "childPolicy":[{ "cds_experimental":{"cluster":"cluster_1"} }]} |
| }, |
| "Route": [{ |
| "path":"/service_1/method_1", |
| "headers":[{"name":"header-1"}], |
| "action":"cds:cluster_1" |
| }] |
| }`, |
| want: nil, |
| wantErr: true, |
| }, |
| { |
| name: "more than one header specifier in header matcher", |
| js: `{ |
| "Action":{ |
| "cds:cluster_1":{ "childPolicy":[{ "cds_experimental":{"cluster":"cluster_1"} }]} |
| }, |
| "Route": [{ |
| "path":"/service_1/method_1", |
| "headers":[{"name":"header-1", "prefixMatch":"a", "suffixMatch":"b"}], |
| "action":"cds:cluster_1" |
| }] |
| }`, |
| want: nil, |
| wantErr: true, |
| }, |
| |
| { |
| name: "OK with path matchers only", |
| js: testJSONConfig, |
| want: &lbConfig{ |
| routes: []routeConfig{ |
| {path: "/service_1/method_1", action: "cds:cluster_1"}, |
| {path: "/service_1/method_2", action: "cds:cluster_1"}, |
| {prefix: "/service_2/method_1", action: "weighted:cluster_1_cluster_2_1"}, |
| {prefix: "/service_2", action: "weighted:cluster_1_cluster_2_1"}, |
| {regex: "^/service_2/method_3$", action: "weighted:cluster_1_cluster_3_1"}, |
| }, |
| actions: map[string]actionConfig{ |
| "cds:cluster_1": {ChildPolicy: &internalserviceconfig.BalancerConfig{ |
| Name: cdsName, Config: cdsConfig1}, |
| }, |
| "weighted:cluster_1_cluster_2_1": {ChildPolicy: &internalserviceconfig.BalancerConfig{ |
| Name: wtName, Config: wtConfig1}, |
| }, |
| "weighted:cluster_1_cluster_3_1": {ChildPolicy: &internalserviceconfig.BalancerConfig{ |
| Name: wtName, Config: wtConfig2}, |
| }, |
| }, |
| }, |
| wantErr: false, |
| }, |
| { |
| name: "OK with all matchers", |
| js: testJSONConfigWithAllMatchers, |
| want: &lbConfig{ |
| routes: []routeConfig{ |
| {path: "/service_1/method_1", action: "cds:cluster_1"}, |
| {prefix: "/service_2/method_1", action: "cds:cluster_1"}, |
| {regex: "^/service_2/method_3$", action: "cds:cluster_1"}, |
| |
| {prefix: "", headers: []headerMatcher{{name: "header-1", exactMatch: "value-1", invertMatch: true}}, action: "cds:cluster_2"}, |
| {prefix: "", headers: []headerMatcher{{name: "header-1", regexMatch: "^value-1$"}}, action: "cds:cluster_2"}, |
| {prefix: "", headers: []headerMatcher{{name: "header-1", rangeMatch: &int64Range{start: -1, end: 7}}}, action: "cds:cluster_3"}, |
| {prefix: "", headers: []headerMatcher{{name: "header-1", presentMatch: true}}, action: "cds:cluster_3"}, |
| {prefix: "", headers: []headerMatcher{{name: "header-1", prefixMatch: "value-1"}}, action: "cds:cluster_2"}, |
| {prefix: "", headers: []headerMatcher{{name: "header-1", suffixMatch: "value-1"}}, action: "cds:cluster_2"}, |
| {prefix: "", fraction: newUInt32P(31415), action: "cds:cluster_3"}, |
| }, |
| actions: map[string]actionConfig{ |
| "cds:cluster_1": {ChildPolicy: &internalserviceconfig.BalancerConfig{ |
| Name: cdsName, Config: cdsConfig1}, |
| }, |
| "cds:cluster_2": {ChildPolicy: &internalserviceconfig.BalancerConfig{ |
| Name: cdsName, Config: cdsConfig2}, |
| }, |
| "cds:cluster_3": {ChildPolicy: &internalserviceconfig.BalancerConfig{ |
| Name: cdsName, Config: cdsConfig3}, |
| }, |
| }, |
| }, |
| wantErr: false, |
| }, |
| } |
| |
| cmpOptions := []cmp.Option{cmp.AllowUnexported(lbConfig{}, routeConfig{}, headerMatcher{}, int64Range{})} |
| |
| for _, tt := range tests { |
| t.Run(tt.name, func(t *testing.T) { |
| got, err := parseConfig([]byte(tt.js)) |
| if (err != nil) != tt.wantErr { |
| t.Errorf("parseConfig() error = %v, wantErr %v", err, tt.wantErr) |
| return |
| } |
| if !cmp.Equal(got, tt.want, cmpOptions...) { |
| t.Errorf("parseConfig() got unexpected result, diff: %v", cmp.Diff(got, tt.want, cmpOptions...)) |
| } |
| }) |
| } |
| } |
| |
| func newUInt32P(i uint32) *uint32 { |
| return &i |
| } |
