This repository has been archived by the owner on Aug 3, 2022. It is now read-only.
-
Notifications
You must be signed in to change notification settings - Fork 6
/
stress_main.go
232 lines (193 loc) · 5.1 KB
/
stress_main.go
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
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
/*
Copyright 2016 The Transicator 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 main
import (
"bytes"
"database/sql"
"flag"
"fmt"
"math/rand"
"os"
"path"
"strconv"
"sync"
"time"
// Empty import to ensure PG driver is loaded
_ "github.com/apigee-labs/transicator/pgclient"
// Same for SQLite driver
_ "github.com/mattn/go-sqlite3"
)
const (
defaultWindowSize = 100
defaultBatchSize = 100
)
func printUsage() {
fmt.Fprintf(os.Stderr, "Usage:\n")
flag.PrintDefaults()
}
func main() {
var pgURL, ssURL, csURL, durStr, dataDir string
var numSenders int
flag.StringVar(&durStr, "d", "2m", "Duration of test run")
flag.StringVar(&pgURL, "pg", "", "Postgres URL")
flag.StringVar(&ssURL, "ss", "", "Snapshot server URL")
flag.StringVar(&csURL, "cs", "", "Change server URL")
flag.StringVar(&dataDir, "l", "./data", "Location of test data directory")
flag.IntVar(&numSenders, "s", 1, "Number of senders and receivers")
flag.Parse()
if !flag.Parsed() {
printUsage()
return
}
if (pgURL == "") || (ssURL == "") || (csURL == "") {
printUsage()
return
}
testDuration, err := time.ParseDuration(durStr)
if err != nil {
fmt.Fprintf(os.Stderr, "Invalid duration: %s\n", err)
printUsage()
return
}
// TODO seed RNG
fmt.Printf("Going to put data in %s\n", dataDir)
os.RemoveAll(dataDir)
err = os.MkdirAll(dataDir, 0777)
if err != nil {
fmt.Fprintf(os.Stderr, "Error creating data directory: %s\n", err)
return
}
var db *sql.DB
db, err = sql.Open("transicator", pgURL)
if err != nil {
fmt.Fprintf(os.Stderr, "Error creating PG driver: %s\n", err)
return
}
defer db.Close()
err = makeTables(db)
if err != nil {
fmt.Fprintf(os.Stderr, "Error creating PG table: %s\n", err)
return
}
defer func() {
cleanTables(db)
}()
wg := &sync.WaitGroup{}
wg.Add(numSenders * 2)
selectors := make([]string, numSenders)
senders := make([]*sender, numSenders)
receivers := make([]*receiver, numSenders)
startTime := time.Now()
for i := 0; i < numSenders; i++ {
selector := strconv.Itoa(rand.Int())
selectors[i] = selector
sender := startSender(
selector, db,
defaultWindowSize, defaultBatchSize, wg)
senders[i] = sender
receiver := startReceiver(
selector, getDataDir(dataDir, i),
ssURL, csURL,
sender, wg)
receivers[i] = receiver
}
time.Sleep(testDuration)
for i := 0; i < numSenders; i++ {
senders[i].stop()
receivers[i].canStop()
}
wg.Wait()
endTime := time.Now()
totalRows := 0
for i := 0; i < numSenders; i++ {
totalRows += verifyTables(i, selectors[i], db, dataDir)
}
elapsed := float64(endTime.Sub(startTime)) / float64(time.Second)
fmt.Printf("%d\trows processed\n", totalRows)
fmt.Printf("%.3f\tseconds\n", elapsed)
fmt.Printf("%.3f\trecords / second\n", float64(totalRows)/elapsed)
}
func makeTables(db *sql.DB) error {
cleanTables(db)
_, err := db.Exec(testTable)
return err
}
func cleanTables(db *sql.DB) error {
_, err := db.Exec("drop table stress_table")
return err
}
func verifyTables(i int, selector string, pgDB *sql.DB, dataDir string) int {
liteDB, err := sql.Open("sqlite3", getDataDir(dataDir, i))
if err != nil {
fmt.Fprintf(os.Stderr, "Can't open SQLite: %s\n", err)
return 0
}
defer liteDB.Close()
pgRows, err := pgDB.Query(`
select content from stress_table where _change_selector = $1 order by id, grp
`, selector)
if err != nil {
fmt.Fprintf(os.Stderr, "Can't select from Postgres: %s\n", err)
return 0
}
defer pgRows.Close()
liteRows, err := liteDB.Query(`
select content from stress_table order by id, grp
`)
if err != nil {
fmt.Fprintf(os.Stderr, "Can't select from SQLite: %s\n", err)
return 0
}
defer liteRows.Close()
rc := 0
for pgRows.Next() {
if !liteRows.Next() {
fmt.Fprintf(os.Stderr, "** More Postgres rows than SQLite rows\n")
break
}
var pgBuf, sBuf []byte
err = pgRows.Scan(&pgBuf)
if err != nil {
fmt.Fprintf(os.Stderr, "** Error scanning PG row: %s\n", err)
continue
}
err = liteRows.Scan(&sBuf)
if err != nil {
fmt.Fprintf(os.Stderr, "** Error scanning SQLite row: %s\n", err)
continue
}
if !bytes.Equal(pgBuf, sBuf) {
fmt.Fprintf(os.Stderr, "** Postgres and SQLite content does not match\n")
continue
}
rc++
}
if liteRows.Next() {
fmt.Fprintf(os.Stderr, "** More SQLite rows than Postgres rows\n")
}
fmt.Printf("Done verifying sender. Verified %d rows\n", rc)
return rc
}
func getDataDir(base string, i int) string {
return path.Join(base, strconv.Itoa(i))
}
const testTable = `
create table stress_table (
id integer primary key,
grp integer not null,
sequence integer not null,
content bytea,
last bool,
_change_selector varchar not null
);
`