1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
|
// Copyright 2019 Google LLC. All Rights Reserved.
//
// 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 cloudspanner
import (
"context"
"flag"
"fmt"
"os"
"path"
"strings"
"sync"
"testing"
"time"
"cloud.google.com/go/spanner"
"cloud.google.com/go/spanner/spannertest"
"google.golang.org/api/option"
"google.golang.org/grpc"
database "cloud.google.com/go/spanner/admin/database/apiv1"
"cloud.google.com/go/spanner/admin/database/apiv1/databasepb"
)
// To run cloudspanner tests,
// 1) Set the -test_cloud_spanner_database flag
// 2) Set application default credentials `gcloud auth application-default login`
var cloudDBPath = flag.String("test_cloud_spanner_database", ":memory:", "eg: projects/my-project/instances/my-instance/database/my-db")
func GetTestDB(ctx context.Context, t *testing.T) *spanner.Client {
t.Helper()
switch dbPath := *cloudDBPath; dbPath {
case "":
t.Skip("-test_cloud_spanner_database flag is unset")
return nil
case ":memory:":
ddl, err := readDDL()
if err != nil {
t.Fatal(err)
}
return inMemClient(ctx, t, uniqueDBName("fakeProject", "fakeInstance"), ddl)
default:
client, err := spanner.NewClient(ctx, *cloudDBPath)
if err != nil {
t.Fatalf("spanner.NewClient(): %v", err)
}
return client
}
}
var dbCount struct {
sync.Mutex
count int
}
func uniqueDBName(project, instance string) string {
// Unique per test binary invocation
timestamp := time.Now().UTC().Format("Jan-02-15-04-05")
testBinary := strings.ToLower(strings.Replace(path.Base(os.Args[0]), ".test", "", 1))
invocationID := fmt.Sprintf("%s-%s", timestamp, testBinary)
dbCount.Lock()
defer dbCount.Unlock()
dbCount.count++
database := fmt.Sprintf("%s-%d", invocationID, dbCount.count)
return fmt.Sprintf("projects/%s/instances/%s/databases/%s", project, instance, database)
}
func inMemClient(ctx context.Context, t testing.TB, dbName string, statements []string) *spanner.Client {
t.Helper()
// Don't use SPANNER_EMULATOR_HOST because we need the raw connection for
// the database admin client anyway.
t.Logf("Using in-memory fake Spanner DB: %s", dbName)
srv, err := spannertest.NewServer("localhost:0")
if err != nil {
t.Fatalf("Starting in-memory fake: %v", err)
}
t.Cleanup(srv.Close)
srv.SetLogger(t.Logf)
dialCtx, cancel := context.WithTimeout(ctx, 1*time.Second)
defer cancel()
conn, err := grpc.DialContext(dialCtx, srv.Addr, grpc.WithInsecure())
if err != nil {
t.Fatalf("Dialing in-memory fake: %v", err)
}
client, err := spanner.NewClient(ctx, dbName, option.WithGRPCConn(conn))
if err != nil {
defer func() {
if err := conn.Close(); err != nil {
t.Errorf("conn.Close(): %v", err)
}
}()
t.Fatalf("Connecting to in-memory fake: %v", err)
}
t.Cleanup(client.Close)
// Set database schema
t.Logf("DDL update: %q", statements)
adminClient, err := database.NewDatabaseAdminClient(ctx, option.WithGRPCConn(conn))
if err != nil {
t.Fatalf("Connecting to in-memory fake DB admin: %v", err)
}
op, err := adminClient.UpdateDatabaseDdl(ctx, &databasepb.UpdateDatabaseDdlRequest{
Database: dbName,
Statements: statements,
})
if err != nil {
t.Fatalf("Starting DDL update: %v", err)
}
if err := op.Wait(ctx); err != nil {
t.Fatalf("failed DDL update: %v", err)
}
return client
}
func cleanTestDB(ctx context.Context, t *testing.T, db *spanner.Client) {
if _, err := db.ReadWriteTransaction(ctx, func(ctx context.Context, txn *spanner.ReadWriteTransaction) error {
mutations := make([]*spanner.Mutation, 0)
for _, table := range []string{
"TreeRoots",
"TreeHeads",
"SubtreeData",
"LeafData",
"SequencedLeafData",
"Unsequenced",
} {
mutations = append(mutations, spanner.Delete(table, spanner.AllKeys()))
}
return txn.BufferWrite(mutations)
}); err != nil {
t.Fatalf("Failed to clean databse: %v", err)
}
}
|
