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upstream-mirror
2026-09-15 20:40:15 +05:00
commit e241b33f26
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311
internal/xds/balancer/cdsbalancer/configbuilder_childname_test.go Normal file
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/*
*
* Copyright 2022 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 cdsbalancer
import (
"testing"
"github.com/google/go-cmp/cmp"
"google.golang.org/grpc/internal/xds/clients"
"google.golang.org/grpc/internal/xds/xdsclient/xdsresource"
)
func (s) Test_nameGenerator_generate(t *testing.T) {
tests := []struct {
name string
prefix uint64
steps []struct {
input [][]xdsresource.Locality
want []string
}
}{
{
name: "init, two new priorities",
prefix: 3,
steps: []struct {
input [][]xdsresource.Locality
want []string
}{
{
input: [][]xdsresource.Locality{
{{ID: clients.Locality{Zone: "L0"}}},
{{ID: clients.Locality{Zone: "L1"}}},
},
want: []string{"priority-3-0", "priority-3-1"},
},
},
},
{
name: "one new priority",
prefix: 1,
steps: []struct {
input [][]xdsresource.Locality
want []string
}{
{
input: [][]xdsresource.Locality{
{{ID: clients.Locality{Zone: "L0"}}},
},
want: []string{"priority-1-0"},
},
{
input: [][]xdsresource.Locality{
{{ID: clients.Locality{Zone: "L0"}}},
{{ID: clients.Locality{Zone: "L1"}}},
},
want: []string{"priority-1-0", "priority-1-1"},
},
},
},
{
name: "merge two priorities",
prefix: 4,
steps: []struct {
input [][]xdsresource.Locality
want []string
}{
{
input: [][]xdsresource.Locality{
{{ID: clients.Locality{Zone: "L0"}}},
{{ID: clients.Locality{Zone: "L1"}}},
{{ID: clients.Locality{Zone: "L2"}}},
},
want: []string{"priority-4-0", "priority-4-1", "priority-4-2"},
},
{
input: [][]xdsresource.Locality{
{{ID: clients.Locality{Zone: "L0"}}, {ID: clients.Locality{Zone: "L1"}}},
{{ID: clients.Locality{Zone: "L2"}}},
},
want: []string{"priority-4-0", "priority-4-2"},
},
},
},
{
name: "swap two priorities",
steps: []struct {
input [][]xdsresource.Locality
want []string
}{
{
input: [][]xdsresource.Locality{
{{ID: clients.Locality{Zone: "L0"}}},
{{ID: clients.Locality{Zone: "L1"}}},
{{ID: clients.Locality{Zone: "L2"}}},
},
want: []string{"priority-0-0", "priority-0-1", "priority-0-2"},
},
{
input: [][]xdsresource.Locality{
{{ID: clients.Locality{Zone: "L1"}}},
{{ID: clients.Locality{Zone: "L0"}}},
{{ID: clients.Locality{Zone: "L2"}}},
},
want: []string{"priority-0-1", "priority-0-0", "priority-0-2"},
},
},
},
{
name: "split priority",
steps: []struct {
input [][]xdsresource.Locality
want []string
}{
{
input: [][]xdsresource.Locality{
{{ID: clients.Locality{Zone: "L0"}}, {ID: clients.Locality{Zone: "L1"}}},
{{ID: clients.Locality{Zone: "L2"}}},
},
want: []string{"priority-0-0", "priority-0-1"},
},
{
input: [][]xdsresource.Locality{
{{ID: clients.Locality{Zone: "L0"}}},
{{ID: clients.Locality{Zone: "L1"}}},
{{ID: clients.Locality{Zone: "L2"}}},
},
want: []string{"priority-0-0", "priority-0-2", "priority-0-1"},
},
},
},
{
name: "priority index preference",
steps: []struct {
input [][]xdsresource.Locality
want []string
}{
{
input: [][]xdsresource.Locality{
{{ID: clients.Locality{Zone: "L0"}}},
{{ID: clients.Locality{Zone: "L1"}}},
},
want: []string{"priority-0-0", "priority-0-1"},
},
{
input: [][]xdsresource.Locality{
{{ID: clients.Locality{Zone: "L1"}}, {ID: clients.Locality{Zone: "L0"}}},
},
want: []string{"priority-0-0"},
},
},
},
{
name: "merge partial",
steps: []struct {
input [][]xdsresource.Locality
want []string
}{
{
input: [][]xdsresource.Locality{
{{ID: clients.Locality{Zone: "L0"}}, {ID: clients.Locality{Zone: "L1"}}},
{{ID: clients.Locality{Zone: "L2"}}, {ID: clients.Locality{Zone: "L3"}}},
},
want: []string{"priority-0-0", "priority-0-1"},
},
{
input: [][]xdsresource.Locality{
{{ID: clients.Locality{Zone: "L0"}}, {ID: clients.Locality{Zone: "L1"}}, {ID: clients.Locality{Zone: "L2"}}},
{{ID: clients.Locality{Zone: "L3"}}},
},
want: []string{"priority-0-0", "priority-0-1"},
},
{
input: [][]xdsresource.Locality{
{{ID: clients.Locality{Zone: "L0"}}, {ID: clients.Locality{Zone: "L1"}}},
{{ID: clients.Locality{Zone: "L2"}}, {ID: clients.Locality{Zone: "L3"}}},
},
want: []string{"priority-0-0", "priority-0-1"},
},
},
},
{
name: "swap shift",
steps: []struct {
input [][]xdsresource.Locality
want []string
}{
{
input: [][]xdsresource.Locality{
{{ID: clients.Locality{Zone: "L0"}}, {ID: clients.Locality{Zone: "L1"}}},
{{ID: clients.Locality{Zone: "L2"}}, {ID: clients.Locality{Zone: "L3"}}},
},
want: []string{"priority-0-0", "priority-0-1"},
},
{
input: [][]xdsresource.Locality{
{{ID: clients.Locality{Zone: "L2"}}},
{{ID: clients.Locality{Zone: "L0"}}, {ID: clients.Locality{Zone: "L1"}}},
},
want: []string{"priority-0-1", "priority-0-0"},
},
},
},
{
name: "replace priority",
steps: []struct {
input [][]xdsresource.Locality
want []string
}{
{
input: [][]xdsresource.Locality{
{{ID: clients.Locality{Zone: "L0"}}, {ID: clients.Locality{Zone: "L1"}}},
{{ID: clients.Locality{Zone: "L2"}}, {ID: clients.Locality{Zone: "L3"}}},
},
want: []string{"priority-0-0", "priority-0-1"},
},
{
input: [][]xdsresource.Locality{
{{ID: clients.Locality{Zone: "L0"}}, {ID: clients.Locality{Zone: "L1"}}},
{{ID: clients.Locality{Zone: "L5"}}},
},
want: []string{"priority-0-0", "priority-0-2"},
},
},
},
{
name: "reordered merge",
steps: []struct {
input [][]xdsresource.Locality
want []string
}{
{
input: [][]xdsresource.Locality{
{{ID: clients.Locality{Zone: "L1"}}, {ID: clients.Locality{Zone: "L2"}}},
{{ID: clients.Locality{Zone: "L0"}}, {ID: clients.Locality{Zone: "L3"}}},
},
want: []string{"priority-0-0", "priority-0-1"},
},
{
input: [][]xdsresource.Locality{
{{ID: clients.Locality{Zone: "L0"}}, {ID: clients.Locality{Zone: "L1"}}, {ID: clients.Locality{Zone: "L2"}}},
{{ID: clients.Locality{Zone: "L3"}}},
},
want: []string{"priority-0-0", "priority-0-1"},
},
{
input: [][]xdsresource.Locality{
{{ID: clients.Locality{Zone: "L1"}}, {ID: clients.Locality{Zone: "L2"}}},
{{ID: clients.Locality{Zone: "L0"}}, {ID: clients.Locality{Zone: "L3"}}},
},
want: []string{"priority-0-0", "priority-0-1"},
},
},
},
{
name: "three-step shift stability",
steps: []struct {
input [][]xdsresource.Locality
want []string
}{
{
input: [][]xdsresource.Locality{
{{ID: clients.Locality{Zone: "L0"}}},
{{ID: clients.Locality{Zone: "L1"}}},
},
want: []string{"priority-0-0", "priority-0-1"},
},
{
input: [][]xdsresource.Locality{
{{ID: clients.Locality{Zone: "L2"}}},
{{ID: clients.Locality{Zone: "L0"}}},
{{ID: clients.Locality{Zone: "L1"}}},
},
want: []string{"priority-0-2", "priority-0-0", "priority-0-1"},
},
{
input: [][]xdsresource.Locality{
{{ID: clients.Locality{Zone: "L0"}}},
{{ID: clients.Locality{Zone: "L1"}}},
},
want: []string{"priority-0-0", "priority-0-1"},
},
},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
ng := newNameGenerator(tt.prefix)
for i, step := range tt.steps {
got := ng.generate(step.input)
if diff := cmp.Diff(got, step.want); diff != "" {
t.Errorf("step %d: generate() = got: %v, want: %v, diff (-got +want): %s", i, got, step.want, diff)
}
}
})
}
}