go.etcd.io/etcd@v3.3.27+incompatible/clientv3/integration/mirror_test.go (about)

     1  // Copyright 2016 The etcd Authors
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package integration
    16  
    17  import (
    18  	"context"
    19  	"fmt"
    20  	"reflect"
    21  	"sync"
    22  	"testing"
    23  	"time"
    24  
    25  	"github.com/coreos/etcd/clientv3/mirror"
    26  	"github.com/coreos/etcd/integration"
    27  	"github.com/coreos/etcd/mvcc/mvccpb"
    28  	"github.com/coreos/etcd/pkg/testutil"
    29  )
    30  
    31  func TestMirrorSync(t *testing.T) {
    32  	defer testutil.AfterTest(t)
    33  
    34  	clus := integration.NewClusterV3(t, &integration.ClusterConfig{Size: 1})
    35  	defer clus.Terminate(t)
    36  
    37  	c := clus.Client(0)
    38  	_, err := c.KV.Put(context.TODO(), "foo", "bar")
    39  	if err != nil {
    40  		t.Fatal(err)
    41  	}
    42  
    43  	syncer := mirror.NewSyncer(c, "", 0)
    44  	gch, ech := syncer.SyncBase(context.TODO())
    45  	wkvs := []*mvccpb.KeyValue{{Key: []byte("foo"), Value: []byte("bar"), CreateRevision: 2, ModRevision: 2, Version: 1}}
    46  
    47  	for g := range gch {
    48  		if !reflect.DeepEqual(g.Kvs, wkvs) {
    49  			t.Fatalf("kv = %v, want %v", g.Kvs, wkvs)
    50  		}
    51  	}
    52  
    53  	for e := range ech {
    54  		t.Fatalf("unexpected error %v", e)
    55  	}
    56  
    57  	wch := syncer.SyncUpdates(context.TODO())
    58  
    59  	_, err = c.KV.Put(context.TODO(), "foo", "bar")
    60  	if err != nil {
    61  		t.Fatal(err)
    62  	}
    63  
    64  	select {
    65  	case r := <-wch:
    66  		wkv := &mvccpb.KeyValue{Key: []byte("foo"), Value: []byte("bar"), CreateRevision: 2, ModRevision: 3, Version: 2}
    67  		if !reflect.DeepEqual(r.Events[0].Kv, wkv) {
    68  			t.Fatalf("kv = %v, want %v", r.Events[0].Kv, wkv)
    69  		}
    70  	case <-time.After(time.Second):
    71  		t.Fatal("failed to receive update in one second")
    72  	}
    73  }
    74  
    75  func TestMirrorSyncBase(t *testing.T) {
    76  	cluster := integration.NewClusterV3(nil, &integration.ClusterConfig{Size: 1})
    77  	defer cluster.Terminate(nil)
    78  
    79  	cli := cluster.Client(0)
    80  	ctx := context.TODO()
    81  
    82  	keyCh := make(chan string)
    83  	var wg sync.WaitGroup
    84  
    85  	for i := 0; i < 50; i++ {
    86  		wg.Add(1)
    87  
    88  		go func() {
    89  			defer wg.Done()
    90  
    91  			for key := range keyCh {
    92  				if _, err := cli.Put(ctx, key, "test"); err != nil {
    93  					t.Fatal(err)
    94  				}
    95  			}
    96  		}()
    97  	}
    98  
    99  	for i := 0; i < 2000; i++ {
   100  		keyCh <- fmt.Sprintf("test%d", i)
   101  	}
   102  
   103  	close(keyCh)
   104  	wg.Wait()
   105  
   106  	syncer := mirror.NewSyncer(cli, "test", 0)
   107  	respCh, errCh := syncer.SyncBase(ctx)
   108  
   109  	count := 0
   110  
   111  	for resp := range respCh {
   112  		count = count + len(resp.Kvs)
   113  		if !resp.More {
   114  			break
   115  		}
   116  	}
   117  
   118  	for err := range errCh {
   119  		t.Fatalf("unexpected error %v", err)
   120  	}
   121  
   122  	if count != 2000 {
   123  		t.Errorf("unexpected kv count: %d", count)
   124  	}
   125  }