mirror of https://github.com/grpc/grpc-go.git
367 lines
11 KiB
Go
367 lines
11 KiB
Go
/*
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*
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* Copyright 2021 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 clusterresolver
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import (
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"encoding/json"
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"testing"
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"time"
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"github.com/google/go-cmp/cmp"
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"github.com/google/go-cmp/cmp/cmpopts"
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"google.golang.org/grpc/balancer"
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"google.golang.org/grpc/balancer/roundrobin"
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iserviceconfig "google.golang.org/grpc/internal/serviceconfig"
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"google.golang.org/grpc/internal/xds/bootstrap"
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"google.golang.org/grpc/xds/internal/balancer/outlierdetection"
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"google.golang.org/grpc/xds/internal/balancer/ringhash"
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)
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func TestDiscoveryMechanismTypeMarshalJSON(t *testing.T) {
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tests := []struct {
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name string
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typ DiscoveryMechanismType
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want string
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}{
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{
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name: "eds",
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typ: DiscoveryMechanismTypeEDS,
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want: `"EDS"`,
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},
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{
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name: "dns",
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typ: DiscoveryMechanismTypeLogicalDNS,
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want: `"LOGICAL_DNS"`,
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},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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if got, err := json.Marshal(tt.typ); err != nil || string(got) != tt.want {
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t.Fatalf("DiscoveryMechanismTypeEDS.MarshalJSON() = (%v, %v), want (%s, nil)", string(got), err, tt.want)
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}
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})
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}
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}
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func TestDiscoveryMechanismTypeUnmarshalJSON(t *testing.T) {
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tests := []struct {
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name string
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js string
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want DiscoveryMechanismType
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wantErr bool
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}{
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{
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name: "eds",
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js: `"EDS"`,
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want: DiscoveryMechanismTypeEDS,
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},
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{
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name: "dns",
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js: `"LOGICAL_DNS"`,
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want: DiscoveryMechanismTypeLogicalDNS,
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},
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{
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name: "error",
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js: `"1234"`,
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wantErr: true,
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},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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var got DiscoveryMechanismType
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err := json.Unmarshal([]byte(tt.js), &got)
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if (err != nil) != tt.wantErr {
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t.Fatalf("DiscoveryMechanismTypeEDS.UnmarshalJSON() error = %v, wantErr %v", err, tt.wantErr)
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}
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if diff := cmp.Diff(got, tt.want); diff != "" {
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t.Fatalf("DiscoveryMechanismTypeEDS.UnmarshalJSON() got unexpected output, diff (-got +want): %v", diff)
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}
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})
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}
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}
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const (
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testJSONConfig1 = `{
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"discoveryMechanisms": [{
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"cluster": "test-cluster-name",
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"lrsLoadReportingServer": {
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"server_uri": "trafficdirector.googleapis.com:443",
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"channel_creds": [ { "type": "google_default" } ]
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},
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"maxConcurrentRequests": 314,
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"type": "EDS",
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"edsServiceName": "test-eds-service-name",
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"outlierDetection": {}
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}],
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"xdsLbPolicy":[{"round_robin":{}}]
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}`
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testJSONConfig2 = `{
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"discoveryMechanisms": [{
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"cluster": "test-cluster-name",
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"lrsLoadReportingServer": {
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"server_uri": "trafficdirector.googleapis.com:443",
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"channel_creds": [ { "type": "google_default" } ]
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},
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"maxConcurrentRequests": 314,
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"type": "EDS",
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"edsServiceName": "test-eds-service-name",
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"outlierDetection": {}
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},{
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"type": "LOGICAL_DNS",
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"outlierDetection": {}
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}],
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"xdsLbPolicy":[{"round_robin":{}}]
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}`
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testJSONConfig3 = `{
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"discoveryMechanisms": [{
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"cluster": "test-cluster-name",
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"lrsLoadReportingServer": {
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"server_uri": "trafficdirector.googleapis.com:443",
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"channel_creds": [ { "type": "google_default" } ]
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},
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"maxConcurrentRequests": 314,
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"type": "EDS",
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"edsServiceName": "test-eds-service-name",
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"outlierDetection": {}
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}],
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"xdsLbPolicy":[{"round_robin":{}}]
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}`
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testJSONConfig4 = `{
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"discoveryMechanisms": [{
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"cluster": "test-cluster-name",
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"lrsLoadReportingServer": {
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"server_uri": "trafficdirector.googleapis.com:443",
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"channel_creds": [ { "type": "google_default" } ]
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},
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"maxConcurrentRequests": 314,
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"type": "EDS",
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"edsServiceName": "test-eds-service-name",
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"outlierDetection": {}
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}],
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"xdsLbPolicy":[{"ring_hash_experimental":{}}]
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}`
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testJSONConfig5 = `{
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"discoveryMechanisms": [{
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"cluster": "test-cluster-name",
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"lrsLoadReportingServer": {
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"server_uri": "trafficdirector.googleapis.com:443",
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"channel_creds": [ { "type": "google_default" } ]
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},
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"maxConcurrentRequests": 314,
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"type": "EDS",
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"edsServiceName": "test-eds-service-name",
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"outlierDetection": {}
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}],
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"xdsLbPolicy":[{"round_robin":{}}]
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}`
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)
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var testLRSServerConfig = &bootstrap.ServerConfig{
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ServerURI: "trafficdirector.googleapis.com:443",
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Creds: bootstrap.ChannelCreds{
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Type: "google_default",
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},
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}
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func TestParseConfig(t *testing.T) {
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tests := []struct {
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name string
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js string
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want *LBConfig
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wantErr bool
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}{
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{
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name: "empty json",
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js: "",
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want: nil,
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wantErr: true,
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},
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{
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name: "OK with one discovery mechanism",
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js: testJSONConfig1,
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want: &LBConfig{
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DiscoveryMechanisms: []DiscoveryMechanism{
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{
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Cluster: testClusterName,
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LoadReportingServer: testLRSServerConfig,
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MaxConcurrentRequests: newUint32(testMaxRequests),
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Type: DiscoveryMechanismTypeEDS,
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EDSServiceName: testEDSService,
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outlierDetection: outlierdetection.LBConfig{
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Interval: iserviceconfig.Duration(10 * time.Second), // default interval
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BaseEjectionTime: iserviceconfig.Duration(30 * time.Second),
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MaxEjectionTime: iserviceconfig.Duration(300 * time.Second),
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MaxEjectionPercent: 10,
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// sre and fpe are both nil
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},
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},
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},
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xdsLBPolicy: iserviceconfig.BalancerConfig{ // do we want to make this not pointer
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Name: roundrobin.Name,
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Config: nil,
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},
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},
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wantErr: false,
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},
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{
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name: "OK with multiple discovery mechanisms",
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js: testJSONConfig2,
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want: &LBConfig{
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DiscoveryMechanisms: []DiscoveryMechanism{
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{
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Cluster: testClusterName,
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LoadReportingServer: testLRSServerConfig,
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MaxConcurrentRequests: newUint32(testMaxRequests),
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Type: DiscoveryMechanismTypeEDS,
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EDSServiceName: testEDSService,
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outlierDetection: outlierdetection.LBConfig{
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Interval: iserviceconfig.Duration(10 * time.Second), // default interval
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BaseEjectionTime: iserviceconfig.Duration(30 * time.Second),
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MaxEjectionTime: iserviceconfig.Duration(300 * time.Second),
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MaxEjectionPercent: 10,
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// sre and fpe are both nil
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},
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},
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{
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Type: DiscoveryMechanismTypeLogicalDNS,
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outlierDetection: outlierdetection.LBConfig{
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Interval: iserviceconfig.Duration(10 * time.Second), // default interval
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BaseEjectionTime: iserviceconfig.Duration(30 * time.Second),
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MaxEjectionTime: iserviceconfig.Duration(300 * time.Second),
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MaxEjectionPercent: 10,
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// sre and fpe are both nil
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},
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},
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},
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xdsLBPolicy: iserviceconfig.BalancerConfig{
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Name: roundrobin.Name,
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Config: nil,
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},
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},
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wantErr: false,
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},
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{
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name: "OK with picking policy round_robin",
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js: testJSONConfig3,
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want: &LBConfig{
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DiscoveryMechanisms: []DiscoveryMechanism{
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{
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Cluster: testClusterName,
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LoadReportingServer: testLRSServerConfig,
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MaxConcurrentRequests: newUint32(testMaxRequests),
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Type: DiscoveryMechanismTypeEDS,
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EDSServiceName: testEDSService,
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outlierDetection: outlierdetection.LBConfig{
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Interval: iserviceconfig.Duration(10 * time.Second), // default interval
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BaseEjectionTime: iserviceconfig.Duration(30 * time.Second),
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MaxEjectionTime: iserviceconfig.Duration(300 * time.Second),
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MaxEjectionPercent: 10,
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// sre and fpe are both nil
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},
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},
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},
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xdsLBPolicy: iserviceconfig.BalancerConfig{
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Name: roundrobin.Name,
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Config: nil,
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},
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},
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wantErr: false,
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},
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{
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name: "OK with picking policy ring_hash",
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js: testJSONConfig4,
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want: &LBConfig{
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DiscoveryMechanisms: []DiscoveryMechanism{
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{
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Cluster: testClusterName,
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LoadReportingServer: testLRSServerConfig,
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MaxConcurrentRequests: newUint32(testMaxRequests),
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Type: DiscoveryMechanismTypeEDS,
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EDSServiceName: testEDSService,
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outlierDetection: outlierdetection.LBConfig{
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Interval: iserviceconfig.Duration(10 * time.Second), // default interval
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BaseEjectionTime: iserviceconfig.Duration(30 * time.Second),
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MaxEjectionTime: iserviceconfig.Duration(300 * time.Second),
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MaxEjectionPercent: 10,
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// sre and fpe are both nil
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},
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},
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},
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xdsLBPolicy: iserviceconfig.BalancerConfig{
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Name: ringhash.Name,
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Config: &ringhash.LBConfig{MinRingSize: 1024, MaxRingSize: 4096}, // Ringhash LB config with default min and max.
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},
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},
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wantErr: false,
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},
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{
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name: "noop-outlier-detection",
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js: testJSONConfig5,
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want: &LBConfig{
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DiscoveryMechanisms: []DiscoveryMechanism{
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{
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Cluster: testClusterName,
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LoadReportingServer: testLRSServerConfig,
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MaxConcurrentRequests: newUint32(testMaxRequests),
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Type: DiscoveryMechanismTypeEDS,
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EDSServiceName: testEDSService,
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outlierDetection: outlierdetection.LBConfig{
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Interval: iserviceconfig.Duration(10 * time.Second), // default interval
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BaseEjectionTime: iserviceconfig.Duration(30 * time.Second),
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MaxEjectionTime: iserviceconfig.Duration(300 * time.Second),
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MaxEjectionPercent: 10,
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// sre and fpe are both nil
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},
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},
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},
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xdsLBPolicy: iserviceconfig.BalancerConfig{
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Name: roundrobin.Name,
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Config: nil,
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},
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},
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wantErr: false,
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},
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}
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for _, tt := range tests {
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b := balancer.Get(Name)
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if b == nil {
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t.Fatalf("LB policy %q not registered", Name)
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}
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cfgParser, ok := b.(balancer.ConfigParser)
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if !ok {
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t.Fatalf("LB policy %q does not support config parsing", Name)
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}
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t.Run(tt.name, func(t *testing.T) {
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got, err := cfgParser.ParseConfig([]byte(tt.js))
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if (err != nil) != tt.wantErr {
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t.Fatalf("parseConfig() error = %v, wantErr %v", err, tt.wantErr)
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}
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if tt.wantErr {
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return
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}
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if diff := cmp.Diff(got, tt.want, cmp.AllowUnexported(LBConfig{}), cmpopts.IgnoreFields(LBConfig{}, "XDSLBPolicy")); diff != "" {
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t.Errorf("parseConfig() got unexpected output, diff (-got +want): %v", diff)
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}
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})
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}
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}
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func newUint32(i uint32) *uint32 {
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return &i
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}
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