146 lines
4.5 KiB
Go
146 lines
4.5 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 ordering
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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/clientv3"
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"github.com/coreos/etcd/integration"
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"github.com/coreos/etcd/pkg/testutil"
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)
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func TestEndpointSwitchResolvesViolation(t *testing.T) {
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defer testutil.AfterTest(t)
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clus := integration.NewClusterV3(t, &integration.ClusterConfig{Size: 3})
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defer clus.Terminate(t)
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eps := []string{
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clus.Members[0].GRPCAddr(),
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clus.Members[1].GRPCAddr(),
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clus.Members[2].GRPCAddr(),
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}
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cfg := clientv3.Config{Endpoints: []string{clus.Members[0].GRPCAddr()}}
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cli, err := clientv3.New(cfg)
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if err != nil {
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t.Fatal(err)
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}
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ctx := context.TODO()
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if _, err = clus.Client(0).Put(ctx, "foo", "bar"); err != nil {
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t.Fatal(err)
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}
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// ensure that the second member has current revision for key "foo"
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if _, err = clus.Client(1).Get(ctx, "foo"); err != nil {
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t.Fatal(err)
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}
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// create partition between third members and the first two members
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// in order to guarantee that the third member's revision of "foo"
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// falls behind as updates to "foo" are issued to the first two members.
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clus.Members[2].InjectPartition(t, clus.Members[:2])
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time.Sleep(1 * time.Second) // give enough time for the operation
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// update to "foo" will not be replicated to the third member due to the partition
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if _, err = clus.Client(1).Put(ctx, "foo", "buzz"); err != nil {
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t.Fatal(err)
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}
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// reset client endpoints to all members such that the copy of cli sent to
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// NewOrderViolationSwitchEndpointClosure will be able to
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// access the full list of endpoints.
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cli.SetEndpoints(eps...)
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OrderingKv := NewKV(cli.KV, NewOrderViolationSwitchEndpointClosure(*cli))
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// set prevRev to the second member's revision of "foo" such that
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// the revision is higher than the third member's revision of "foo"
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_, err = OrderingKv.Get(ctx, "foo")
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if err != nil {
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t.Fatal(err)
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}
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cli.SetEndpoints(clus.Members[2].GRPCAddr())
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time.Sleep(1 * time.Second) // give enough time for operation
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_, err = OrderingKv.Get(ctx, "foo", clientv3.WithSerializable())
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if err != nil {
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t.Fatalf("failed to resolve order violation %v", err)
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}
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}
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func TestUnresolvableOrderViolation(t *testing.T) {
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defer testutil.AfterTest(t)
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clus := integration.NewClusterV3(t, &integration.ClusterConfig{Size: 5})
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defer clus.Terminate(t)
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cfg := clientv3.Config{
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Endpoints: []string{
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clus.Members[0].GRPCAddr(),
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clus.Members[1].GRPCAddr(),
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clus.Members[2].GRPCAddr(),
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clus.Members[3].GRPCAddr(),
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clus.Members[4].GRPCAddr(),
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},
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}
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cli, err := clientv3.New(cfg)
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if err != nil {
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t.Fatal(err)
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}
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eps := cli.Endpoints()
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ctx := context.TODO()
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cli.SetEndpoints(clus.Members[0].GRPCAddr())
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time.Sleep(1 * time.Second)
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_, err = cli.Put(ctx, "foo", "bar")
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if err != nil {
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t.Fatal(err)
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}
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// stop fourth member in order to force the member to have an outdated revision
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clus.Members[3].Stop(t)
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time.Sleep(1 * time.Second) // give enough time for operation
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// stop fifth member in order to force the member to have an outdated revision
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clus.Members[4].Stop(t)
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time.Sleep(1 * time.Second) // give enough time for operation
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_, err = cli.Put(ctx, "foo", "buzz")
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if err != nil {
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t.Fatal(err)
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}
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// reset client endpoints to all members such that the copy of cli sent to
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// NewOrderViolationSwitchEndpointClosure will be able to
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// access the full list of endpoints.
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cli.SetEndpoints(eps...)
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OrderingKv := NewKV(cli.KV, NewOrderViolationSwitchEndpointClosure(*cli))
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// set prevRev to the first member's revision of "foo" such that
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// the revision is higher than the fourth and fifth members' revision of "foo"
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_, err = OrderingKv.Get(ctx, "foo")
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if err != nil {
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t.Fatal(err)
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}
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clus.Members[0].Stop(t)
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clus.Members[1].Stop(t)
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clus.Members[2].Stop(t)
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clus.Members[3].Restart(t)
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clus.Members[4].Restart(t)
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cli.SetEndpoints(clus.Members[3].GRPCAddr())
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time.Sleep(1 * time.Second) // give enough time for operation
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_, err = OrderingKv.Get(ctx, "foo", clientv3.WithSerializable())
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if err != ErrNoGreaterRev {
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t.Fatalf("expected %v, got %v", ErrNoGreaterRev, err)
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}
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}
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