e866314b94
1. Persist the cluster version change through raft. When the member is restarted, it can recover the previous known decided cluster version. 2. When there is a new leader, it is forced to do a version checking immediately. This helps to update the first cluster version fast.
674 lines
16 KiB
Go
674 lines
16 KiB
Go
// Copyright 2015 CoreOS, Inc.
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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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package etcdserver
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import (
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"encoding/json"
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"fmt"
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"path"
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"reflect"
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"testing"
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"github.com/coreos/etcd/Godeps/_workspace/src/github.com/coreos/go-semver/semver"
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"github.com/coreos/etcd/pkg/testutil"
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"github.com/coreos/etcd/pkg/types"
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"github.com/coreos/etcd/raft/raftpb"
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"github.com/coreos/etcd/store"
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)
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func TestClusterFromString(t *testing.T) {
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tests := []struct {
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f string
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mems []*Member
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}{
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{
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"mem1=http://10.0.0.1:2379,mem1=http://128.193.4.20:2379,mem2=http://10.0.0.2:2379,default=http://127.0.0.1:2379",
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[]*Member{
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newTestMember(3141198903430435750, []string{"http://10.0.0.2:2379"}, "mem2", nil),
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newTestMember(4322322643958477905, []string{"http://10.0.0.1:2379", "http://128.193.4.20:2379"}, "mem1", nil),
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newTestMember(12762790032478827328, []string{"http://127.0.0.1:2379"}, "default", nil),
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},
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},
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}
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for i, tt := range tests {
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c, err := NewClusterFromString("abc", tt.f)
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if err != nil {
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t.Fatalf("#%d: unexpected new error: %v", i, err)
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}
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if c.token != "abc" {
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t.Errorf("#%d: token = %v, want abc", i, c.token)
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}
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if !reflect.DeepEqual(c.Members(), tt.mems) {
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t.Errorf("#%d: members = %+v, want %+v", i, c.Members(), tt.mems)
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}
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}
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}
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func TestClusterFromStringBad(t *testing.T) {
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tests := []string{
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// invalid URL
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"%^",
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// no URL defined for member
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"mem1=,mem2=http://128.193.4.20:2379,mem3=http://10.0.0.2:2379",
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"mem1,mem2=http://128.193.4.20:2379,mem3=http://10.0.0.2:2379",
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// bad URL for member
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"default=http://localhost/",
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// TODO(philips): anyone know of a 64 bit sha1 hash collision
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// "06b2f82fd81b2c20=http://128.193.4.20:2379,02c60cb75083ceef=http://128.193.4.20:2379",
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// the same url for two members
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"mem1=http://128.193.4.20:2379,mem2=http://128.193.4.20:2379",
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}
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for i, tt := range tests {
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if _, err := NewClusterFromString("abc", tt); err == nil {
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t.Errorf("#%d: unexpected successful new, want err", i)
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}
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}
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}
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func TestClusterFromStore(t *testing.T) {
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tests := []struct {
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mems []*Member
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ver *semver.Version
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}{
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{
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[]*Member{newTestMember(1, nil, "", nil)},
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semver.Must(semver.NewVersion("2.0.0")),
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},
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{
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nil,
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nil,
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},
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{
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[]*Member{
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newTestMember(1, nil, "", nil),
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newTestMember(2, nil, "", nil),
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},
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semver.Must(semver.NewVersion("2.0.0")),
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},
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}
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for i, tt := range tests {
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st := store.New()
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hc := newTestCluster(nil)
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hc.SetStore(st)
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for _, m := range tt.mems {
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hc.AddMember(m)
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}
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if tt.ver != nil {
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_, err := st.Set(path.Join(StoreClusterPrefix, "version"), false, tt.ver.String(), store.Permanent)
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if err != nil {
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t.Fatal(err)
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}
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}
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c := NewClusterFromStore("abc", st)
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if c.token != "abc" {
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t.Errorf("#%d: token = %v, want %v", i, c.token, "abc")
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}
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if !reflect.DeepEqual(c.Members(), tt.mems) {
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t.Errorf("#%d: members = %v, want %v", i, c.Members(), tt.mems)
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}
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if !reflect.DeepEqual(c.Version(), tt.ver) {
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t.Errorf("#%d: ver = %v, want %v", i, c.Version(), tt.ver)
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}
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}
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}
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func TestClusterMember(t *testing.T) {
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membs := []*Member{
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newTestMember(1, nil, "node1", nil),
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newTestMember(2, nil, "node2", nil),
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}
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tests := []struct {
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id types.ID
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match bool
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}{
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{1, true},
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{2, true},
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{3, false},
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}
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for i, tt := range tests {
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c := newTestCluster(membs)
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m := c.Member(tt.id)
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if g := m != nil; g != tt.match {
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t.Errorf("#%d: find member = %v, want %v", i, g, tt.match)
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}
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if m != nil && m.ID != tt.id {
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t.Errorf("#%d: id = %x, want %x", i, m.ID, tt.id)
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}
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}
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}
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func TestClusterMemberByName(t *testing.T) {
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membs := []*Member{
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newTestMember(1, nil, "node1", nil),
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newTestMember(2, nil, "node2", nil),
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}
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tests := []struct {
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name string
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match bool
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}{
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{"node1", true},
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{"node2", true},
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{"node3", false},
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}
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for i, tt := range tests {
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c := newTestCluster(membs)
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m := c.MemberByName(tt.name)
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if g := m != nil; g != tt.match {
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t.Errorf("#%d: find member = %v, want %v", i, g, tt.match)
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}
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if m != nil && m.Name != tt.name {
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t.Errorf("#%d: name = %v, want %v", i, m.Name, tt.name)
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}
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}
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}
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func TestClusterMemberIDs(t *testing.T) {
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c := newTestCluster([]*Member{
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newTestMember(1, nil, "", nil),
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newTestMember(4, nil, "", nil),
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newTestMember(100, nil, "", nil),
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})
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w := []types.ID{1, 4, 100}
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g := c.MemberIDs()
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if !reflect.DeepEqual(w, g) {
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t.Errorf("IDs = %+v, want %+v", g, w)
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}
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}
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func TestClusterPeerURLs(t *testing.T) {
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tests := []struct {
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mems []*Member
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wurls []string
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}{
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// single peer with a single address
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{
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mems: []*Member{
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newTestMember(1, []string{"http://192.0.2.1"}, "", nil),
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},
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wurls: []string{"http://192.0.2.1"},
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},
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// single peer with a single address with a port
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{
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mems: []*Member{
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newTestMember(1, []string{"http://192.0.2.1:8001"}, "", nil),
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},
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wurls: []string{"http://192.0.2.1:8001"},
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},
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// several members explicitly unsorted
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{
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mems: []*Member{
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newTestMember(2, []string{"http://192.0.2.3", "http://192.0.2.4"}, "", nil),
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newTestMember(3, []string{"http://192.0.2.5", "http://192.0.2.6"}, "", nil),
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newTestMember(1, []string{"http://192.0.2.1", "http://192.0.2.2"}, "", nil),
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},
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wurls: []string{"http://192.0.2.1", "http://192.0.2.2", "http://192.0.2.3", "http://192.0.2.4", "http://192.0.2.5", "http://192.0.2.6"},
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},
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// no members
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{
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mems: []*Member{},
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wurls: []string{},
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},
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// peer with no peer urls
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{
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mems: []*Member{
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newTestMember(3, []string{}, "", nil),
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},
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wurls: []string{},
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},
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}
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for i, tt := range tests {
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c := newTestCluster(tt.mems)
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urls := c.PeerURLs()
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if !reflect.DeepEqual(urls, tt.wurls) {
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t.Errorf("#%d: PeerURLs = %v, want %v", i, urls, tt.wurls)
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}
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}
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}
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func TestClusterClientURLs(t *testing.T) {
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tests := []struct {
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mems []*Member
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wurls []string
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}{
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// single peer with a single address
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{
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mems: []*Member{
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newTestMember(1, nil, "", []string{"http://192.0.2.1"}),
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},
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wurls: []string{"http://192.0.2.1"},
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},
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// single peer with a single address with a port
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{
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mems: []*Member{
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newTestMember(1, nil, "", []string{"http://192.0.2.1:8001"}),
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},
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wurls: []string{"http://192.0.2.1:8001"},
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},
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// several members explicitly unsorted
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{
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mems: []*Member{
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newTestMember(2, nil, "", []string{"http://192.0.2.3", "http://192.0.2.4"}),
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newTestMember(3, nil, "", []string{"http://192.0.2.5", "http://192.0.2.6"}),
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newTestMember(1, nil, "", []string{"http://192.0.2.1", "http://192.0.2.2"}),
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},
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wurls: []string{"http://192.0.2.1", "http://192.0.2.2", "http://192.0.2.3", "http://192.0.2.4", "http://192.0.2.5", "http://192.0.2.6"},
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},
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// no members
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{
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mems: []*Member{},
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wurls: []string{},
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},
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// peer with no client urls
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{
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mems: []*Member{
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newTestMember(3, nil, "", []string{}),
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},
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wurls: []string{},
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},
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}
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for i, tt := range tests {
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c := newTestCluster(tt.mems)
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urls := c.ClientURLs()
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if !reflect.DeepEqual(urls, tt.wurls) {
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t.Errorf("#%d: ClientURLs = %v, want %v", i, urls, tt.wurls)
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}
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}
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}
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func TestClusterValidateAndAssignIDsBad(t *testing.T) {
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tests := []struct {
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clmembs []*Member
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membs []*Member
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}{
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{
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// unmatched length
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[]*Member{
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newTestMember(1, []string{"http://127.0.0.1:2379"}, "", nil),
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},
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[]*Member{},
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},
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{
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// unmatched peer urls
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[]*Member{
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newTestMember(1, []string{"http://127.0.0.1:2379"}, "", nil),
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},
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[]*Member{
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newTestMember(1, []string{"http://127.0.0.1:4001"}, "", nil),
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},
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},
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{
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// unmatched peer urls
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[]*Member{
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newTestMember(1, []string{"http://127.0.0.1:2379"}, "", nil),
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newTestMember(2, []string{"http://127.0.0.2:2379"}, "", nil),
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},
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[]*Member{
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newTestMember(1, []string{"http://127.0.0.1:2379"}, "", nil),
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newTestMember(2, []string{"http://127.0.0.2:4001"}, "", nil),
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},
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},
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}
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for i, tt := range tests {
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ecl := newTestCluster(tt.clmembs)
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lcl := newTestCluster(tt.membs)
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if err := ValidateClusterAndAssignIDs(lcl, ecl); err == nil {
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t.Errorf("#%d: unexpected update success", i)
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}
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}
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}
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func TestClusterValidateAndAssignIDs(t *testing.T) {
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tests := []struct {
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clmembs []*Member
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membs []*Member
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wids []types.ID
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}{
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{
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[]*Member{
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newTestMember(1, []string{"http://127.0.0.1:2379"}, "", nil),
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newTestMember(2, []string{"http://127.0.0.2:2379"}, "", nil),
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},
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[]*Member{
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newTestMember(3, []string{"http://127.0.0.1:2379"}, "", nil),
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newTestMember(4, []string{"http://127.0.0.2:2379"}, "", nil),
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},
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[]types.ID{3, 4},
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},
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}
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for i, tt := range tests {
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lcl := newTestCluster(tt.clmembs)
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ecl := newTestCluster(tt.membs)
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if err := ValidateClusterAndAssignIDs(lcl, ecl); err != nil {
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t.Errorf("#%d: unexpect update error: %v", i, err)
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}
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if !reflect.DeepEqual(lcl.MemberIDs(), tt.wids) {
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t.Errorf("#%d: ids = %v, want %v", i, lcl.MemberIDs(), tt.wids)
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}
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}
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}
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func TestClusterValidateConfigurationChange(t *testing.T) {
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cl := newCluster("")
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cl.SetStore(store.New())
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for i := 1; i <= 4; i++ {
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attr := RaftAttributes{PeerURLs: []string{fmt.Sprintf("http://127.0.0.1:%d", i)}}
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cl.AddMember(&Member{ID: types.ID(i), RaftAttributes: attr})
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}
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cl.RemoveMember(4)
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attr := RaftAttributes{PeerURLs: []string{fmt.Sprintf("http://127.0.0.1:%d", 1)}}
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ctx, err := json.Marshal(&Member{ID: types.ID(5), RaftAttributes: attr})
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if err != nil {
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t.Fatal(err)
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}
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attr = RaftAttributes{PeerURLs: []string{fmt.Sprintf("http://127.0.0.1:%d", 5)}}
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ctx5, err := json.Marshal(&Member{ID: types.ID(5), RaftAttributes: attr})
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if err != nil {
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t.Fatal(err)
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}
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attr = RaftAttributes{PeerURLs: []string{fmt.Sprintf("http://127.0.0.1:%d", 3)}}
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ctx2to3, err := json.Marshal(&Member{ID: types.ID(2), RaftAttributes: attr})
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if err != nil {
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t.Fatal(err)
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}
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attr = RaftAttributes{PeerURLs: []string{fmt.Sprintf("http://127.0.0.1:%d", 5)}}
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ctx2to5, err := json.Marshal(&Member{ID: types.ID(2), RaftAttributes: attr})
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if err != nil {
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t.Fatal(err)
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}
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tests := []struct {
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cc raftpb.ConfChange
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werr error
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}{
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{
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raftpb.ConfChange{
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Type: raftpb.ConfChangeRemoveNode,
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NodeID: 3,
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},
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nil,
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},
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{
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raftpb.ConfChange{
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Type: raftpb.ConfChangeAddNode,
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NodeID: 4,
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},
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ErrIDRemoved,
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},
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{
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raftpb.ConfChange{
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Type: raftpb.ConfChangeRemoveNode,
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NodeID: 4,
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},
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ErrIDRemoved,
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},
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{
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raftpb.ConfChange{
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Type: raftpb.ConfChangeAddNode,
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NodeID: 1,
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},
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ErrIDExists,
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},
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{
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raftpb.ConfChange{
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Type: raftpb.ConfChangeAddNode,
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NodeID: 5,
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Context: ctx,
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},
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ErrPeerURLexists,
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},
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{
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raftpb.ConfChange{
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Type: raftpb.ConfChangeRemoveNode,
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NodeID: 5,
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},
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ErrIDNotFound,
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},
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{
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raftpb.ConfChange{
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Type: raftpb.ConfChangeAddNode,
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NodeID: 5,
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Context: ctx5,
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},
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nil,
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},
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{
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raftpb.ConfChange{
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Type: raftpb.ConfChangeUpdateNode,
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NodeID: 5,
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Context: ctx,
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},
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ErrIDNotFound,
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},
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// try to change the peer url of 2 to the peer url of 3
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{
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raftpb.ConfChange{
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Type: raftpb.ConfChangeUpdateNode,
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NodeID: 2,
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Context: ctx2to3,
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},
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ErrPeerURLexists,
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},
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{
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raftpb.ConfChange{
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Type: raftpb.ConfChangeUpdateNode,
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NodeID: 2,
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Context: ctx2to5,
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},
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nil,
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},
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}
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for i, tt := range tests {
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err := cl.ValidateConfigurationChange(tt.cc)
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if err != tt.werr {
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t.Errorf("#%d: validateConfigurationChange error = %v, want %v", i, err, tt.werr)
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}
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}
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}
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func TestClusterGenID(t *testing.T) {
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cs := newTestCluster([]*Member{
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newTestMember(1, nil, "", nil),
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newTestMember(2, nil, "", nil),
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})
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cs.genID()
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if cs.ID() == 0 {
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t.Fatalf("cluster.ID = %v, want not 0", cs.ID())
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}
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previd := cs.ID()
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|
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cs.SetStore(&storeRecorder{})
|
|
cs.AddMember(newTestMember(3, nil, "", nil))
|
|
cs.genID()
|
|
if cs.ID() == previd {
|
|
t.Fatalf("cluster.ID = %v, want not %v", cs.ID(), previd)
|
|
}
|
|
}
|
|
|
|
func TestNodeToMemberBad(t *testing.T) {
|
|
tests := []*store.NodeExtern{
|
|
{Key: "/1234", Nodes: []*store.NodeExtern{
|
|
{Key: "/1234/strange"},
|
|
}},
|
|
{Key: "/1234", Nodes: []*store.NodeExtern{
|
|
{Key: "/1234/raftAttributes", Value: stringp("garbage")},
|
|
}},
|
|
{Key: "/1234", Nodes: []*store.NodeExtern{
|
|
{Key: "/1234/attributes", Value: stringp(`{"name":"node1","clientURLs":null}`)},
|
|
}},
|
|
{Key: "/1234", Nodes: []*store.NodeExtern{
|
|
{Key: "/1234/raftAttributes", Value: stringp(`{"peerURLs":null}`)},
|
|
{Key: "/1234/strange"},
|
|
}},
|
|
{Key: "/1234", Nodes: []*store.NodeExtern{
|
|
{Key: "/1234/raftAttributes", Value: stringp(`{"peerURLs":null}`)},
|
|
{Key: "/1234/attributes", Value: stringp("garbage")},
|
|
}},
|
|
{Key: "/1234", Nodes: []*store.NodeExtern{
|
|
{Key: "/1234/raftAttributes", Value: stringp(`{"peerURLs":null}`)},
|
|
{Key: "/1234/attributes", Value: stringp(`{"name":"node1","clientURLs":null}`)},
|
|
{Key: "/1234/strange"},
|
|
}},
|
|
}
|
|
for i, tt := range tests {
|
|
if _, err := nodeToMember(tt); err == nil {
|
|
t.Errorf("#%d: unexpected nil error", i)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestClusterAddMember(t *testing.T) {
|
|
st := &storeRecorder{}
|
|
c := newTestCluster(nil)
|
|
c.SetStore(st)
|
|
c.AddMember(newTestMember(1, nil, "node1", nil))
|
|
|
|
wactions := []testutil.Action{
|
|
{
|
|
Name: "Create",
|
|
Params: []interface{}{
|
|
path.Join(storeMembersPrefix, "1", "raftAttributes"),
|
|
false,
|
|
`{"peerURLs":null}`,
|
|
false,
|
|
store.Permanent,
|
|
},
|
|
},
|
|
}
|
|
if g := st.Action(); !reflect.DeepEqual(g, wactions) {
|
|
t.Errorf("actions = %v, want %v", g, wactions)
|
|
}
|
|
}
|
|
|
|
func TestClusterMembers(t *testing.T) {
|
|
cls := &Cluster{
|
|
members: map[types.ID]*Member{
|
|
1: &Member{ID: 1},
|
|
20: &Member{ID: 20},
|
|
100: &Member{ID: 100},
|
|
5: &Member{ID: 5},
|
|
50: &Member{ID: 50},
|
|
},
|
|
}
|
|
w := []*Member{
|
|
&Member{ID: 1},
|
|
&Member{ID: 5},
|
|
&Member{ID: 20},
|
|
&Member{ID: 50},
|
|
&Member{ID: 100},
|
|
}
|
|
if g := cls.Members(); !reflect.DeepEqual(g, w) {
|
|
t.Fatalf("Members()=%#v, want %#v", g, w)
|
|
}
|
|
}
|
|
|
|
func TestClusterString(t *testing.T) {
|
|
cls := &Cluster{
|
|
members: map[types.ID]*Member{
|
|
1: newTestMember(
|
|
1,
|
|
[]string{"http://1.1.1.1:1111", "http://0.0.0.0:0000"},
|
|
"abc",
|
|
nil,
|
|
),
|
|
2: newTestMember(
|
|
2,
|
|
[]string{"http://2.2.2.2:2222"},
|
|
"def",
|
|
nil,
|
|
),
|
|
3: newTestMember(
|
|
3,
|
|
[]string{"http://3.3.3.3:1234", "http://127.0.0.1:2380"},
|
|
"ghi",
|
|
nil,
|
|
),
|
|
// no PeerURLs = not included
|
|
4: newTestMember(
|
|
4,
|
|
[]string{},
|
|
"four",
|
|
nil,
|
|
),
|
|
5: newTestMember(
|
|
5,
|
|
nil,
|
|
"five",
|
|
nil,
|
|
),
|
|
},
|
|
}
|
|
w := "abc=http://0.0.0.0:0000,abc=http://1.1.1.1:1111,def=http://2.2.2.2:2222,ghi=http://127.0.0.1:2380,ghi=http://3.3.3.3:1234"
|
|
if g := cls.String(); g != w {
|
|
t.Fatalf("Cluster.String():\ngot %#v\nwant %#v", g, w)
|
|
}
|
|
|
|
}
|
|
|
|
func TestClusterRemoveMember(t *testing.T) {
|
|
st := &storeRecorder{}
|
|
c := newTestCluster(nil)
|
|
c.SetStore(st)
|
|
c.RemoveMember(1)
|
|
|
|
wactions := []testutil.Action{
|
|
{Name: "Delete", Params: []interface{}{memberStoreKey(1), true, true}},
|
|
{Name: "Create", Params: []interface{}{removedMemberStoreKey(1), false, "", false, store.Permanent}},
|
|
}
|
|
if !reflect.DeepEqual(st.Action(), wactions) {
|
|
t.Errorf("actions = %v, want %v", st.Action(), wactions)
|
|
}
|
|
}
|
|
|
|
func TestNodeToMember(t *testing.T) {
|
|
n := &store.NodeExtern{Key: "/1234", Nodes: []*store.NodeExtern{
|
|
{Key: "/1234/attributes", Value: stringp(`{"name":"node1","clientURLs":null}`)},
|
|
{Key: "/1234/raftAttributes", Value: stringp(`{"peerURLs":null}`)},
|
|
}}
|
|
wm := &Member{ID: 0x1234, RaftAttributes: RaftAttributes{}, Attributes: Attributes{Name: "node1"}}
|
|
m, err := nodeToMember(n)
|
|
if err != nil {
|
|
t.Fatalf("unexpected nodeToMember error: %v", err)
|
|
}
|
|
if !reflect.DeepEqual(m, wm) {
|
|
t.Errorf("member = %+v, want %+v", m, wm)
|
|
}
|
|
}
|
|
|
|
func newTestCluster(membs []*Member) *Cluster {
|
|
c := &Cluster{members: make(map[types.ID]*Member), removed: make(map[types.ID]bool)}
|
|
for _, m := range membs {
|
|
c.members[m.ID] = m
|
|
}
|
|
return c
|
|
}
|
|
|
|
func stringp(s string) *string { return &s }
|