v3lock_grpc_test.go
// Copyright 2017 The etcd Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package integration
import (
"context"
"testing"
"time"
lockpb "go.etcd.io/etcd/etcdserver/api/v3lock/v3lockpb"
pb "go.etcd.io/etcd/etcdserver/etcdserverpb"
"go.etcd.io/etcd/pkg/testutil"
)
// TestV3LockLockWaiter tests that a client will wait for a lock, then acquire it
// once it is unlocked.
func TestV3LockLockWaiter(t *testing.T) {
defer testutil.AfterTest(t)
clus := NewClusterV3(t, &ClusterConfig{Size: 1})
defer clus.Terminate(t)
lease1, err1 := toGRPC(clus.RandClient()).Lease.LeaseGrant(context.TODO(), &pb.LeaseGrantRequest{TTL: 30})
if err1 != nil {
t.Fatal(err1)
}
lease2, err2 := toGRPC(clus.RandClient()).Lease.LeaseGrant(context.TODO(), &pb.LeaseGrantRequest{TTL: 30})
if err2 != nil {
t.Fatal(err2)
}
lc := toGRPC(clus.Client(0)).Lock
l1, lerr1 := lc.Lock(context.TODO(), &lockpb.LockRequest{Name: []byte("foo"), Lease: lease1.ID})
if lerr1 != nil {
t.Fatal(lerr1)
}
lockc := make(chan struct{})
go func() {
l2, lerr2 := lc.Lock(context.TODO(), &lockpb.LockRequest{Name: []byte("foo"), Lease: lease2.ID})
if lerr2 != nil {
t.Error(lerr2)
}
if l1.Header.Revision >= l2.Header.Revision {
t.Errorf("expected l1 revision < l2 revision, got %d >= %d", l1.Header.Revision, l2.Header.Revision)
}
close(lockc)
}()
select {
case <-time.After(200 * time.Millisecond):
case <-lockc:
t.Fatalf("locked before unlock")
}
if _, uerr := lc.Unlock(context.TODO(), &lockpb.UnlockRequest{Key: l1.Key}); uerr != nil {
t.Fatal(uerr)
}
select {
case <-time.After(200 * time.Millisecond):
t.Fatalf("waiter did not lock after unlock")
case <-lockc:
}
}