mirror of https://github.com/grpc/grpc-go.git
357 lines
10 KiB
Go
357 lines
10 KiB
Go
/*
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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 resolver
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import (
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"testing"
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"github.com/google/go-cmp/cmp"
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xdsclient "google.golang.org/grpc/xds/internal/client"
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)
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func TestNewActionsFromRoutes(t *testing.T) {
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tests := []struct {
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name string
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routes []*xdsclient.Route
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want map[string]actionWithAssignedName
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}{
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{
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name: "temp",
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routes: []*xdsclient.Route{
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{Action: map[string]uint32{"B": 60, "A": 40}},
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{Action: map[string]uint32{"A": 30, "B": 70}},
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{Action: map[string]uint32{"B": 90, "C": 10}},
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},
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want: map[string]actionWithAssignedName{
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"A40_B60_": {map[string]uint32{"A": 40, "B": 60}, "A_B_", "", 0},
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"A30_B70_": {map[string]uint32{"A": 30, "B": 70}, "A_B_", "", 0},
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"B90_C10_": {map[string]uint32{"B": 90, "C": 10}, "B_C_", "", 0},
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},
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},
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}
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cmpOpts := []cmp.Option{cmp.AllowUnexported(actionWithAssignedName{})}
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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 := newActionsFromRoutes(tt.routes); !cmp.Equal(got, tt.want, cmpOpts...) {
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t.Errorf("newActionsFromRoutes() got unexpected result, diff %v", cmp.Diff(got, tt.want, cmpOpts...))
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}
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})
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}
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}
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func TestRemoveOrReuseName(t *testing.T) {
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tests := []struct {
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name string
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oldActions map[string]actionWithAssignedName
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oldRandNums map[int64]bool
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newActions map[string]actionWithAssignedName
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wantActions map[string]actionWithAssignedName
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wantRandNums map[int64]bool
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}{
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{
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name: "add same cluster",
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oldActions: map[string]actionWithAssignedName{
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"a20_b30_c50_": {
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clustersWithWeights: map[string]uint32{"a": 20, "b": 30, "c": 50},
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clusterNames: "a_b_c_",
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assignedName: "a_b_c_0",
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randomNumber: 0,
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},
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},
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oldRandNums: map[int64]bool{
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0: true,
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},
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newActions: map[string]actionWithAssignedName{
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"a20_b30_c50_": {
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clustersWithWeights: map[string]uint32{"a": 20, "b": 30, "c": 50},
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clusterNames: "a_b_c_",
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},
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"a10_b50_c40_": {
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clustersWithWeights: map[string]uint32{"a": 10, "b": 50, "c": 40},
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clusterNames: "a_b_c_",
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},
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},
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wantActions: map[string]actionWithAssignedName{
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"a20_b30_c50_": {
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clustersWithWeights: map[string]uint32{"a": 20, "b": 30, "c": 50},
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clusterNames: "a_b_c_",
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assignedName: "a_b_c_0",
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randomNumber: 0,
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},
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"a10_b50_c40_": {
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clustersWithWeights: map[string]uint32{"a": 10, "b": 50, "c": 40},
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clusterNames: "a_b_c_",
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assignedName: "a_b_c_1000",
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randomNumber: 1000,
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},
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},
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wantRandNums: map[int64]bool{
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0: true,
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1000: true,
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},
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},
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{
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name: "delete same cluster",
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oldActions: map[string]actionWithAssignedName{
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"a20_b30_c50_": {
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clustersWithWeights: map[string]uint32{"a": 20, "b": 30, "c": 50},
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clusterNames: "a_b_c_",
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assignedName: "a_b_c_0",
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randomNumber: 0,
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},
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"a10_b50_c40_": {
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clustersWithWeights: map[string]uint32{"a": 10, "b": 50, "c": 40},
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clusterNames: "a_b_c_",
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assignedName: "a_b_c_1",
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randomNumber: 1,
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},
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},
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oldRandNums: map[int64]bool{
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0: true,
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1: true,
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},
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newActions: map[string]actionWithAssignedName{
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"a20_b30_c50_": {
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clustersWithWeights: map[string]uint32{"a": 20, "b": 30, "c": 50},
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clusterNames: "a_b_c_",
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},
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},
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wantActions: map[string]actionWithAssignedName{
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"a20_b30_c50_": {
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clustersWithWeights: map[string]uint32{"a": 20, "b": 30, "c": 50},
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clusterNames: "a_b_c_",
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assignedName: "a_b_c_0",
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randomNumber: 0,
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},
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},
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wantRandNums: map[int64]bool{
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0: true,
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},
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},
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{
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name: "add new clusters",
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oldActions: map[string]actionWithAssignedName{
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"a20_b30_c50_": {
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clustersWithWeights: map[string]uint32{"a": 20, "b": 30, "c": 50},
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clusterNames: "a_b_c_",
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assignedName: "a_b_c_0",
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randomNumber: 0,
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},
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},
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oldRandNums: map[int64]bool{
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0: true,
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},
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newActions: map[string]actionWithAssignedName{
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"a20_b30_c50_": {
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clustersWithWeights: map[string]uint32{"a": 20, "b": 30, "c": 50},
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clusterNames: "a_b_c_",
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},
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"a50_b50_": {
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clustersWithWeights: map[string]uint32{"a": 50, "b": 50},
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clusterNames: "a_b_",
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},
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},
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wantActions: map[string]actionWithAssignedName{
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"a20_b30_c50_": {
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clustersWithWeights: map[string]uint32{"a": 20, "b": 30, "c": 50},
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clusterNames: "a_b_c_",
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assignedName: "a_b_c_0",
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randomNumber: 0,
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},
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"a50_b50_": {
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clustersWithWeights: map[string]uint32{"a": 50, "b": 50},
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clusterNames: "a_b_",
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assignedName: "a_b_1000",
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randomNumber: 1000,
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},
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},
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wantRandNums: map[int64]bool{
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0: true,
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1000: true,
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},
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},
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{
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name: "reuse",
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oldActions: map[string]actionWithAssignedName{
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"a20_b30_c50_": {
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clustersWithWeights: map[string]uint32{"a": 20, "b": 30, "c": 50},
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clusterNames: "a_b_c_",
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assignedName: "a_b_c_0",
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randomNumber: 0,
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},
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},
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oldRandNums: map[int64]bool{
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0: true,
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},
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newActions: map[string]actionWithAssignedName{
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"a10_b50_c40_": {
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clustersWithWeights: map[string]uint32{"a": 10, "b": 50, "c": 40},
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clusterNames: "a_b_c_",
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},
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},
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wantActions: map[string]actionWithAssignedName{
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"a10_b50_c40_": {
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clustersWithWeights: map[string]uint32{"a": 10, "b": 50, "c": 40},
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clusterNames: "a_b_c_",
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assignedName: "a_b_c_0",
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randomNumber: 0,
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},
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},
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wantRandNums: map[int64]bool{
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0: true,
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},
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},
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{
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name: "add and reuse",
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oldActions: map[string]actionWithAssignedName{
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"a20_b30_c50_": {
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clustersWithWeights: map[string]uint32{"a": 20, "b": 30, "c": 50},
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clusterNames: "a_b_c_",
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assignedName: "a_b_c_0",
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randomNumber: 0,
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},
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"a10_b50_c40_": {
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clustersWithWeights: map[string]uint32{"a": 10, "b": 50, "c": 40},
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clusterNames: "a_b_c_",
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assignedName: "a_b_c_1",
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randomNumber: 1,
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},
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"a50_b50_": {
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clustersWithWeights: map[string]uint32{"a": 50, "b": 50},
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clusterNames: "a_b_",
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assignedName: "a_b_2",
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randomNumber: 2,
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},
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},
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oldRandNums: map[int64]bool{
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0: true,
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1: true,
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2: true,
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},
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newActions: map[string]actionWithAssignedName{
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"a10_b50_c40_": {
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clustersWithWeights: map[string]uint32{"a": 10, "b": 50, "c": 40},
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clusterNames: "a_b_c_",
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},
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"a30_b30_c40_": {
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clustersWithWeights: map[string]uint32{"a": 30, "b": 30, "c": 40},
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clusterNames: "a_b_c_",
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},
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"c50_d50_": {
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clustersWithWeights: map[string]uint32{"c": 50, "d": 50},
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clusterNames: "c_d_",
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},
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},
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wantActions: map[string]actionWithAssignedName{
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"a10_b50_c40_": {
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clustersWithWeights: map[string]uint32{"a": 10, "b": 50, "c": 40},
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clusterNames: "a_b_c_",
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assignedName: "a_b_c_1",
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randomNumber: 1,
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},
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"a30_b30_c40_": {
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clustersWithWeights: map[string]uint32{"a": 30, "b": 30, "c": 40},
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clusterNames: "a_b_c_",
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assignedName: "a_b_c_0",
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randomNumber: 0,
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},
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"c50_d50_": {
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clustersWithWeights: map[string]uint32{"c": 50, "d": 50},
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clusterNames: "c_d_",
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assignedName: "c_d_1000",
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randomNumber: 1000,
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},
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},
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wantRandNums: map[int64]bool{
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0: true,
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1: true,
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1000: true,
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},
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},
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}
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cmpOpts := []cmp.Option{cmp.AllowUnexported(actionWithAssignedName{})}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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defer replaceRandNumGenerator(1000)()
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r := &xdsResolver{
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actions: tt.oldActions,
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usedActionNameRandomNumber: tt.oldRandNums,
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}
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r.updateActions(tt.newActions)
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if !cmp.Equal(r.actions, tt.wantActions, cmpOpts...) {
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t.Errorf("removeOrReuseName() got unexpected actions, diff %v", cmp.Diff(r.actions, tt.wantActions, cmpOpts...))
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}
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if !cmp.Equal(r.usedActionNameRandomNumber, tt.wantRandNums) {
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t.Errorf("removeOrReuseName() got unexpected nextIndex, diff %v", cmp.Diff(r.usedActionNameRandomNumber, tt.wantRandNums))
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}
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})
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}
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}
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func TestGetActionAssignedName(t *testing.T) {
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tests := []struct {
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name string
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actions map[string]actionWithAssignedName
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action map[string]uint32
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want string
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}{
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{
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name: "good",
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actions: map[string]actionWithAssignedName{
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"a20_b30_c50_": {
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clustersWithWeights: map[string]uint32{"a": 20, "b": 30, "c": 50},
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clusterNames: "a_b_c_",
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assignedName: "a_b_c_0",
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},
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},
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action: map[string]uint32{"a": 20, "b": 30, "c": 50},
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want: "a_b_c_0",
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},
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{
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name: "two",
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actions: map[string]actionWithAssignedName{
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"a20_b30_c50_": {
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clustersWithWeights: map[string]uint32{"a": 20, "b": 30, "c": 50},
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clusterNames: "a_b_c_",
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assignedName: "a_b_c_0",
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},
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"c50_d50_": {
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clustersWithWeights: map[string]uint32{"c": 50, "d": 50},
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clusterNames: "c_d_",
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assignedName: "c_d_0",
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},
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},
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action: map[string]uint32{"c": 50, "d": 50},
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want: "c_d_0",
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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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r := &xdsResolver{
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actions: tt.actions,
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}
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if got := r.getActionAssignedName(tt.action); got != tt.want {
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t.Errorf("getActionAssignedName() = %v, want %v", got, tt.want)
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}
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})
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}
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}
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