Service Topology implementation
* Implement Service Topology for ipvs and iptables proxier * Add test files * API validation
This commit is contained in:
Roc Chan
478
pkg/proxy/topology_test.go
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478
pkg/proxy/topology_test.go
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/*
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Copyright 2019 The Kubernetes Authors.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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package proxy
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import (
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"reflect"
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"testing"
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v1 "k8s.io/api/core/v1"
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"k8s.io/apimachinery/pkg/types"
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)
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func TestFilterTopologyEndpoint(t *testing.T) {
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type endpoint struct {
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Endpoint string
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NodeName types.NodeName
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}
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testCases := []struct {
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Name string
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nodeLabels map[types.NodeName]map[string]string
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endpoints []endpoint
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currentNodeName types.NodeName
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topologyKeys []string
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expected []endpoint
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}{
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{
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// Case[0]: no topology key and endpoints at all = 0 endpoints
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Name: "no topology key and endpoints",
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nodeLabels: map[types.NodeName]map[string]string{
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"testNode1": {
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"kubernetes.io/hostname": "10.0.0.1",
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"topology.kubernetes.io/zone": "90001",
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"topology.kubernetes.io/region": "cd",
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}},
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endpoints: []endpoint{},
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currentNodeName: "testNode1",
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topologyKeys: nil,
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expected: []endpoint{},
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},
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{
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// Case[1]: no topology key, 2 nodes each with 2 endpoints = 4
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// endpoints
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Name: "no topology key but have endpoints",
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nodeLabels: map[types.NodeName]map[string]string{
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"testNode1": {
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"kubernetes.io/hostname": "testNode1",
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"topology.kubernetes.io/zone": "90001",
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"topology.kubernetes.io/region": "cd",
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},
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"testNode2": {
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"kubernetes.io/hostname": "testNode2",
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"topology.kubernetes.io/zone": "90001",
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"topology.kubernetes.io/region": "cd",
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},
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},
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endpoints: []endpoint{
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{Endpoint: "1.1.1.1:11", NodeName: "testNode1"},
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{Endpoint: "1.1.1.2:11", NodeName: "testNode1"},
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{Endpoint: "1.1.2.1:11", NodeName: "testNode2"},
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{Endpoint: "1.1.2.2:11", NodeName: "testNode2"},
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},
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currentNodeName: "testNode1",
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topologyKeys: nil,
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expected: []endpoint{
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{Endpoint: "1.1.1.1:11", NodeName: "testNode1"},
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{Endpoint: "1.1.1.2:11", NodeName: "testNode1"},
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{Endpoint: "1.1.2.1:11", NodeName: "testNode2"},
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{Endpoint: "1.1.2.2:11", NodeName: "testNode2"},
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},
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},
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{
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// Case[2]: 1 topology key (hostname), 2 nodes each with 2 endpoints
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// 1 match = 2 endpoints
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Name: "one topology key with one node matched",
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nodeLabels: map[types.NodeName]map[string]string{
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"testNode1": {
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"kubernetes.io/hostname": "testNode1",
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"topology.kubernetes.io/zone": "90001",
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"topology.kubernetes.io/region": "cd",
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},
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"testNode2": {
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"kubernetes.io/hostname": "testNode2",
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"topology.kubernetes.io/zone": "90001",
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"topology.kubernetes.io/region": "cd",
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},
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},
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endpoints: []endpoint{
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{Endpoint: "1.1.1.1:11", NodeName: "testNode1"},
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{Endpoint: "1.1.1.2:11", NodeName: "testNode1"},
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{Endpoint: "1.1.2.1:11", NodeName: "testNode2"},
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{Endpoint: "1.1.2.2:11", NodeName: "testNode2"},
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},
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currentNodeName: "testNode1",
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topologyKeys: []string{"kubernetes.io/hostname"},
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expected: []endpoint{
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{Endpoint: "1.1.1.1:11", NodeName: "testNode1"},
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{Endpoint: "1.1.1.2:11", NodeName: "testNode1"},
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},
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},
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{
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// Case[3]: 1 topology key (hostname), 2 nodes each with 2 endpoints
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// no match = 0 endpoints
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Name: "one topology key without node matched",
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nodeLabels: map[types.NodeName]map[string]string{
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"testNode1": {
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"kubernetes.io/hostname": "testNode1",
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"topology.kubernetes.io/zone": "90001",
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"topology.kubernetes.io/region": "cd",
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},
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"testNode2": {
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"kubernetes.io/hostname": "testNode2",
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"topology.kubernetes.io/zone": "90001",
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"topology.kubernetes.io/region": "cd",
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},
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"testNode3": {
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"kubernetes.io/hostname": "testNode3",
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"topology.kubernetes.io/zone": "90001",
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"topology.kubernetes.io/region": "cd",
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},
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},
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endpoints: []endpoint{
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{Endpoint: "1.1.1.1:11", NodeName: "testNode1"},
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{Endpoint: "1.1.1.2:11", NodeName: "testNode1"},
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{Endpoint: "1.1.2.1:11", NodeName: "testNode2"},
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{Endpoint: "1.1.2.2:11", NodeName: "testNode2"},
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},
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currentNodeName: "testNode3",
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topologyKeys: []string{"kubernetes.io/hostname"},
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expected: []endpoint{},
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},
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{
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// Case[4]: 1 topology key (zone), 2 nodes in zone a, 2 nodes in
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// zone b, each with 2 endpoints = 4 endpoints
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Name: "one topology key with multiple nodes matched",
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nodeLabels: map[types.NodeName]map[string]string{
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"testNode1": {
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"kubernetes.io/hostname": "testNode1",
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"topology.kubernetes.io/zone": "90001",
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"topology.kubernetes.io/region": "cd",
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},
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"testNode2": {
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"kubernetes.io/hostname": "testNode2",
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"topology.kubernetes.io/zone": "90001",
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"topology.kubernetes.io/region": "cd",
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},
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"testNode3": {
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"kubernetes.io/hostname": "testNode3",
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"topology.kubernetes.io/zone": "90002",
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"topology.kubernetes.io/region": "cd",
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},
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"testNode4": {
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"kubernetes.io/hostname": "testNode4",
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"topology.kubernetes.io/zone": "90002",
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"topology.kubernetes.io/region": "cd",
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},
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},
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endpoints: []endpoint{
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{Endpoint: "1.1.1.1:11", NodeName: "testNode1"},
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{Endpoint: "1.1.1.2:11", NodeName: "testNode1"},
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{Endpoint: "1.1.2.1:11", NodeName: "testNode2"},
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{Endpoint: "1.1.2.2:11", NodeName: "testNode2"},
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{Endpoint: "1.1.3.1:11", NodeName: "testNode3"},
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{Endpoint: "1.1.3.2:11", NodeName: "testNode3"},
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{Endpoint: "1.1.4.1:11", NodeName: "testNode4"},
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{Endpoint: "1.1.4.2:11", NodeName: "testNode4"},
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},
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currentNodeName: "testNode2",
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topologyKeys: []string{"topology.kubernetes.io/zone"},
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expected: []endpoint{
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{Endpoint: "1.1.1.1:11", NodeName: "testNode1"},
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{Endpoint: "1.1.1.2:11", NodeName: "testNode1"},
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{Endpoint: "1.1.2.1:11", NodeName: "testNode2"},
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{Endpoint: "1.1.2.2:11", NodeName: "testNode2"},
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},
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},
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{
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// Case[5]: 2 topology keys (hostname, zone), 2 nodes each with 2
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// endpoints, 1 hostname match = 2 endpoints (2nd key ignored)
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Name: "early match in multiple topology keys",
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nodeLabels: map[types.NodeName]map[string]string{
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"testNode1": {
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"kubernetes.io/hostname": "testNode1",
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"topology.kubernetes.io/zone": "90001",
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"topology.kubernetes.io/region": "cd",
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},
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"testNode2": {
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"kubernetes.io/hostname": "testNode2",
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"topology.kubernetes.io/zone": "90001",
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"topology.kubernetes.io/region": "cd",
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},
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"testNode3": {
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"kubernetes.io/hostname": "testNode3",
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"topology.kubernetes.io/zone": "90002",
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"topology.kubernetes.io/region": "cd",
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},
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"testNode4": {
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"kubernetes.io/hostname": "testNode4",
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"topology.kubernetes.io/zone": "90002",
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"topology.kubernetes.io/region": "cd",
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},
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},
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endpoints: []endpoint{
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{Endpoint: "1.1.1.1:11", NodeName: "testNode1"},
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{Endpoint: "1.1.1.2:11", NodeName: "testNode1"},
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{Endpoint: "1.1.2.1:11", NodeName: "testNode2"},
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{Endpoint: "1.1.2.2:11", NodeName: "testNode2"},
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{Endpoint: "1.1.3.1:11", NodeName: "testNode3"},
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{Endpoint: "1.1.3.2:11", NodeName: "testNode3"},
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{Endpoint: "1.1.4.1:11", NodeName: "testNode4"},
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{Endpoint: "1.1.4.2:11", NodeName: "testNode4"},
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},
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currentNodeName: "testNode2",
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topologyKeys: []string{"kubernetes.io/hostname"},
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expected: []endpoint{
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{Endpoint: "1.1.2.1:11", NodeName: "testNode2"},
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{Endpoint: "1.1.2.2:11", NodeName: "testNode2"},
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},
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},
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{
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// Case[6]: 2 topology keys (hostname, zone), 2 nodes in zone a, 2
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// nodes in zone b, each with 2 endpoints, no hostname match, 1 zone
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// match = 4 endpoints
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Name: "later match in multiple topology keys",
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nodeLabels: map[types.NodeName]map[string]string{
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"testNode1": {
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"kubernetes.io/hostname": "testNode1",
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"topology.kubernetes.io/zone": "90001",
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"topology.kubernetes.io/region": "cd",
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},
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"testNode2": {
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"kubernetes.io/hostname": "testNode2",
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"topology.kubernetes.io/zone": "90001",
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"topology.kubernetes.io/region": "cd",
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},
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"testNode3": {
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"kubernetes.io/hostname": "testNode3",
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"topology.kubernetes.io/zone": "90002",
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"topology.kubernetes.io/region": "cd",
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},
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"testNode4": {
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"kubernetes.io/hostname": "testNode4",
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"topology.kubernetes.io/zone": "90002",
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"topology.kubernetes.io/region": "cd",
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},
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"testNode5": {
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"kubernetes.io/hostname": "testNode5",
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"topology.kubernetes.io/zone": "90002",
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"topology.kubernetes.io/region": "cd",
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},
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},
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endpoints: []endpoint{
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{Endpoint: "1.1.1.1:11", NodeName: "testNode1"},
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{Endpoint: "1.1.1.2:11", NodeName: "testNode1"},
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{Endpoint: "1.1.2.1:11", NodeName: "testNode2"},
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{Endpoint: "1.1.2.2:11", NodeName: "testNode2"},
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{Endpoint: "1.1.3.1:11", NodeName: "testNode3"},
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{Endpoint: "1.1.3.2:11", NodeName: "testNode3"},
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{Endpoint: "1.1.4.1:11", NodeName: "testNode4"},
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{Endpoint: "1.1.4.2:11", NodeName: "testNode4"},
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},
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currentNodeName: "testNode5",
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topologyKeys: []string{"kubernetes.io/hostname", "topology.kubernetes.io/zone"},
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expected: []endpoint{
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{Endpoint: "1.1.3.1:11", NodeName: "testNode3"},
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{Endpoint: "1.1.3.2:11", NodeName: "testNode3"},
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{Endpoint: "1.1.4.1:11", NodeName: "testNode4"},
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{Endpoint: "1.1.4.2:11", NodeName: "testNode4"},
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},
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},
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{
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// Case[7]: 2 topology keys (hostname, zone), 2 nodes in zone a, 2
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// nodes in zone b, each with 2 endpoints, no hostname match, no zone
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// match = 0 endpoints
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Name: "multiple topology keys without node matched",
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nodeLabels: map[types.NodeName]map[string]string{
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"testNode1": {
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"kubernetes.io/hostname": "testNode1",
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"topology.kubernetes.io/zone": "90001",
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"topology.kubernetes.io/region": "cd",
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},
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"testNode2": {
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"kubernetes.io/hostname": "testNode2",
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"topology.kubernetes.io/zone": "90001",
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"topology.kubernetes.io/region": "cd",
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},
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"testNode3": {
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"kubernetes.io/hostname": "testNode3",
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"topology.kubernetes.io/zone": "90002",
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"topology.kubernetes.io/region": "cd",
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},
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"testNode4": {
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"kubernetes.io/hostname": "testNode4",
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"topology.kubernetes.io/zone": "90002",
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"topology.kubernetes.io/region": "cd",
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},
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"testNode5": {
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"kubernetes.io/hostname": "testNode5",
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"topology.kubernetes.io/zone": "90003",
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"topology.kubernetes.io/region": "cd",
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},
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},
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endpoints: []endpoint{
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{Endpoint: "1.1.1.1:11", NodeName: "testNode1"},
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{Endpoint: "1.1.1.2:11", NodeName: "testNode1"},
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{Endpoint: "1.1.2.1:11", NodeName: "testNode2"},
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{Endpoint: "1.1.2.2:11", NodeName: "testNode2"},
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{Endpoint: "1.1.3.1:11", NodeName: "testNode3"},
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{Endpoint: "1.1.3.2:11", NodeName: "testNode3"},
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{Endpoint: "1.1.4.1:11", NodeName: "testNode4"},
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{Endpoint: "1.1.4.2:11", NodeName: "testNode4"},
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},
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currentNodeName: "testNode5",
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topologyKeys: []string{"kubernetes.io/hostname", "topology.kubernetes.io/zone"},
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expected: []endpoint{},
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},
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{
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// Case[8]: 2 topology keys (hostname, "*"), 2 nodes each with 2
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// endpoints, 1 match hostname = 2 endpoints
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Name: "multiple topology keys matched node when 'Any' key ignored",
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nodeLabels: map[types.NodeName]map[string]string{
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"testNode1": {
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"kubernetes.io/hostname": "testNode1",
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"topology.kubernetes.io/zone": "90001",
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"topology.kubernetes.io/region": "cd",
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},
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"testNode2": {
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"kubernetes.io/hostname": "testNode2",
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"topology.kubernetes.io/zone": "90001",
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"topology.kubernetes.io/region": "cd",
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},
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},
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endpoints: []endpoint{
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{Endpoint: "1.1.1.1:11", NodeName: "testNode1"},
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{Endpoint: "1.1.1.2:11", NodeName: "testNode1"},
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{Endpoint: "1.1.2.1:11", NodeName: "testNode2"},
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{Endpoint: "1.1.2.2:11", NodeName: "testNode2"},
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},
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currentNodeName: "testNode1",
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topologyKeys: []string{"kubernetes.io/hostname", v1.TopologyKeyAny},
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expected: []endpoint{
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{Endpoint: "1.1.1.1:11", NodeName: "testNode1"},
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||||
{Endpoint: "1.1.1.2:11", NodeName: "testNode1"},
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},
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||||
},
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{
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// Case[9]: 2 topology keys (hostname, "*"), 2 nodes each with 2
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// endpoints, no hostname match, catch-all ("*") matched with 4
|
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// endpoints
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Name: "two topology keys matched node with 'Any' key",
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nodeLabels: map[types.NodeName]map[string]string{
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||||
"testNode1": {
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"kubernetes.io/hostname": "testNode1",
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||||
"topology.kubernetes.io/zone": "90001",
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"topology.kubernetes.io/region": "cd",
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},
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"testNode2": {
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"kubernetes.io/hostname": "testNode2",
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"topology.kubernetes.io/zone": "90001",
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"topology.kubernetes.io/region": "cd",
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},
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"testNode3": {
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"kubernetes.io/hostname": "testNode3",
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"topology.kubernetes.io/zone": "90001",
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||||
"topology.kubernetes.io/region": "cd",
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||||
},
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||||
},
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endpoints: []endpoint{
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||||
{Endpoint: "1.1.1.1:11", NodeName: "testNode1"},
|
||||
{Endpoint: "1.1.1.2:11", NodeName: "testNode1"},
|
||||
{Endpoint: "1.1.2.1:11", NodeName: "testNode2"},
|
||||
{Endpoint: "1.1.2.2:11", NodeName: "testNode2"},
|
||||
},
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||||
currentNodeName: "testNode3",
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||||
topologyKeys: []string{"kubernetes.io/hostname", v1.TopologyKeyAny},
|
||||
expected: []endpoint{
|
||||
{Endpoint: "1.1.1.1:11", NodeName: "testNode1"},
|
||||
{Endpoint: "1.1.1.2:11", NodeName: "testNode1"},
|
||||
{Endpoint: "1.1.2.1:11", NodeName: "testNode2"},
|
||||
{Endpoint: "1.1.2.2:11", NodeName: "testNode2"},
|
||||
},
|
||||
},
|
||||
{
|
||||
// Case[10]: 3 topology keys (hostname, zone, "*"), 2 nodes in zone a,
|
||||
// 2 nodes in zone b, each with 2 endpoints, no hostname match, no
|
||||
// zone, catch-all ("*") matched with 8 endpoints
|
||||
Name: "multiple topology keys matched node with 'Any' key",
|
||||
nodeLabels: map[types.NodeName]map[string]string{
|
||||
"testNode1": {
|
||||
"kubernetes.io/hostname": "testNode1",
|
||||
"topology.kubernetes.io/zone": "90001",
|
||||
"topology.kubernetes.io/region": "cd",
|
||||
},
|
||||
"testNode2": {
|
||||
"kubernetes.io/hostname": "testNode2",
|
||||
"topology.kubernetes.io/zone": "90001",
|
||||
"topology.kubernetes.io/region": "cd",
|
||||
},
|
||||
"testNode3": {
|
||||
"kubernetes.io/hostname": "testNode3",
|
||||
"topology.kubernetes.io/zone": "90002",
|
||||
"topology.kubernetes.io/region": "cd",
|
||||
},
|
||||
"testNode4": {
|
||||
"kubernetes.io/hostname": "testNode4",
|
||||
"topology.kubernetes.io/zone": "90002",
|
||||
"topology.kubernetes.io/region": "cd",
|
||||
},
|
||||
"testNode5": {
|
||||
"kubernetes.io/hostname": "testNode5",
|
||||
"topology.kubernetes.io/zone": "90003",
|
||||
"topology.kubernetes.io/region": "cd",
|
||||
},
|
||||
},
|
||||
endpoints: []endpoint{
|
||||
{Endpoint: "1.1.1.1:11", NodeName: "testNode1"},
|
||||
{Endpoint: "1.1.1.2:11", NodeName: "testNode1"},
|
||||
{Endpoint: "1.1.2.1:11", NodeName: "testNode2"},
|
||||
{Endpoint: "1.1.2.2:11", NodeName: "testNode2"},
|
||||
{Endpoint: "1.1.3.1:11", NodeName: "testNode3"},
|
||||
{Endpoint: "1.1.3.2:11", NodeName: "testNode3"},
|
||||
{Endpoint: "1.1.4.1:11", NodeName: "testNode4"},
|
||||
{Endpoint: "1.1.4.2:11", NodeName: "testNode4"},
|
||||
},
|
||||
currentNodeName: "testNode5",
|
||||
topologyKeys: []string{"kubernetes.io/hostname", "topology.kubernetes.io/zone", v1.TopologyKeyAny},
|
||||
expected: []endpoint{
|
||||
{Endpoint: "1.1.1.1:11", NodeName: "testNode1"},
|
||||
{Endpoint: "1.1.1.2:11", NodeName: "testNode1"},
|
||||
{Endpoint: "1.1.2.1:11", NodeName: "testNode2"},
|
||||
{Endpoint: "1.1.2.2:11", NodeName: "testNode2"},
|
||||
{Endpoint: "1.1.3.1:11", NodeName: "testNode3"},
|
||||
{Endpoint: "1.1.3.2:11", NodeName: "testNode3"},
|
||||
{Endpoint: "1.1.4.1:11", NodeName: "testNode4"},
|
||||
{Endpoint: "1.1.4.2:11", NodeName: "testNode4"},
|
||||
},
|
||||
},
|
||||
}
|
||||
endpointsToStringArray := func(endpoints []endpoint) []string {
|
||||
result := make([]string, 0, len(endpoints))
|
||||
for _, ep := range endpoints {
|
||||
result = append(result, ep.Endpoint)
|
||||
}
|
||||
return result
|
||||
}
|
||||
for _, tc := range testCases {
|
||||
t.Run(tc.Name, func(t *testing.T) {
|
||||
m := make(map[Endpoint]endpoint)
|
||||
endpoints := []Endpoint{}
|
||||
for _, ep := range tc.endpoints {
|
||||
var e Endpoint = &BaseEndpointInfo{Endpoint: ep.Endpoint, Topology: tc.nodeLabels[ep.NodeName]}
|
||||
m[e] = ep
|
||||
endpoints = append(endpoints, e)
|
||||
}
|
||||
currentNodeLabels := tc.nodeLabels[tc.currentNodeName]
|
||||
filteredEndpoint := []endpoint{}
|
||||
for _, ep := range FilterTopologyEndpoint(currentNodeLabels, tc.topologyKeys, endpoints) {
|
||||
filteredEndpoint = append(filteredEndpoint, m[ep])
|
||||
}
|
||||
if !reflect.DeepEqual(filteredEndpoint, tc.expected) {
|
||||
t.Errorf("expected %v, got %v", endpointsToStringArray(tc.expected), endpointsToStringArray(filteredEndpoint))
|
||||
}
|
||||
})
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user