github.com/matrixorigin/matrixone@v1.2.0/pkg/logservice/testclient_test.go (about)

     1  // Copyright 2021 - 2022 Matrix Origin
     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 logservice
    16  
    17  import (
    18  	"context"
    19  	"testing"
    20  	"time"
    21  
    22  	"github.com/lni/vfs"
    23  
    24  	"github.com/stretchr/testify/assert"
    25  	"github.com/stretchr/testify/require"
    26  )
    27  
    28  func TestTestClient(t *testing.T) {
    29  	fs := vfs.NewStrictMem()
    30  	service, ccfg, err := NewTestService(fs)
    31  	require.NoError(t, err)
    32  	defer service.Close()
    33  
    34  	// you need to decision what timeout value to use
    35  	// you also need to retry requests on timeout
    36  	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
    37  	defer cancel()
    38  
    39  	// get two clients, you can get many clients to be used concurrently
    40  	// but each client itself is not goroutine safe
    41  	client1, err := NewClient(ctx, ccfg)
    42  	require.NoError(t, err)
    43  	defer client1.Close()
    44  	client2, err := NewClient(ctx, ccfg)
    45  	require.NoError(t, err)
    46  	defer client2.Close()
    47  
    48  	// Don't use the Data field unless you know what you are doing
    49  	rec1 := client1.GetLogRecord(5)
    50  	rec2 := client2.GetLogRecord(5)
    51  	copy(rec1.Payload(), []byte("hello"))
    52  	copy(rec2.Payload(), []byte("world"))
    53  
    54  	// append the records
    55  	lsn1, err := client1.Append(ctx, rec1)
    56  	require.NoError(t, err)
    57  	lsn2, err := client2.Append(ctx, rec2)
    58  	require.NoError(t, err)
    59  	assert.Equal(t, lsn1+1, lsn2)
    60  
    61  	// read them back and check whether the returned data is expected
    62  	recs, lsn, err := client1.Read(ctx, lsn1, 1024)
    63  	require.NoError(t, err)
    64  	assert.Equal(t, lsn1, lsn)
    65  	assert.Equal(t, 2, len(recs))
    66  	assert.Equal(t, rec1.Payload(), recs[0].Payload())
    67  	assert.Equal(t, rec2.Payload(), recs[1].Payload())
    68  }