mirror of
https://github.com/etcd-io/etcd.git
synced 2024-09-27 06:25:44 +00:00
109 lines
3.1 KiB
Go
109 lines
3.1 KiB
Go
// Copyright 2017 The etcd 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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package integration
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import (
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"context"
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"testing"
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"time"
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"github.com/coreos/etcd/etcdserver/api/v3rpc/rpctypes"
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pb "github.com/coreos/etcd/etcdserver/etcdserverpb"
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"github.com/coreos/etcd/pkg/testutil"
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)
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func TestMoveLeader(t *testing.T) { testMoveLeader(t, true) }
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func TestMoveLeaderService(t *testing.T) { testMoveLeader(t, false) }
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func testMoveLeader(t *testing.T, auto bool) {
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defer testutil.AfterTest(t)
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clus := NewClusterV3(t, &ClusterConfig{Size: 3})
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defer clus.Terminate(t)
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oldLeadIdx := clus.WaitLeader(t)
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oldLeadID := uint64(clus.Members[oldLeadIdx].s.ID())
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// ensure followers go through leader transition while learship transfer
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idc := make(chan uint64)
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for i := range clus.Members {
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if oldLeadIdx != i {
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go func(m *member) {
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idc <- checkLeaderTransition(t, m, oldLeadID)
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}(clus.Members[i])
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}
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}
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target := uint64(clus.Members[(oldLeadIdx+1)%3].s.ID())
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if auto {
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err := clus.Members[oldLeadIdx].s.TransferLeadership()
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if err != nil {
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t.Fatal(err)
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}
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} else {
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mvc := toGRPC(clus.Client(oldLeadIdx)).Maintenance
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_, err := mvc.MoveLeader(context.TODO(), &pb.MoveLeaderRequest{TargetID: target})
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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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// wait until leader transitions have happened
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var newLeadIDs [2]uint64
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for i := range newLeadIDs {
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select {
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case newLeadIDs[i] = <-idc:
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case <-time.After(time.Second):
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t.Fatal("timed out waiting for leader transition")
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}
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}
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// remaining members must agree on the same leader
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if newLeadIDs[0] != newLeadIDs[1] {
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t.Fatalf("expected same new leader %d == %d", newLeadIDs[0], newLeadIDs[1])
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}
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// new leader must be different than the old leader
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if oldLeadID == newLeadIDs[0] {
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t.Fatalf("expected old leader %d != new leader %d", oldLeadID, newLeadIDs[0])
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}
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// if move-leader were used, new leader must match transferee
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if !auto {
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if newLeadIDs[0] != target {
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t.Fatalf("expected new leader %d != target %d", newLeadIDs[0], target)
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}
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}
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}
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// TestMoveLeaderError ensures that request to non-leader fail.
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func TestMoveLeaderError(t *testing.T) {
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defer testutil.AfterTest(t)
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clus := NewClusterV3(t, &ClusterConfig{Size: 3})
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defer clus.Terminate(t)
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oldLeadIdx := clus.WaitLeader(t)
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followerIdx := (oldLeadIdx + 1) % 3
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target := uint64(clus.Members[(oldLeadIdx+2)%3].s.ID())
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mvc := toGRPC(clus.Client(followerIdx)).Maintenance
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_, err := mvc.MoveLeader(context.TODO(), &pb.MoveLeaderRequest{TargetID: target})
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if !eqErrGRPC(err, rpctypes.ErrGRPCNotLeader) {
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t.Errorf("err = %v, want %v", err, rpctypes.ErrGRPCNotLeader)
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}
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}
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