/
dbtester.go
180 lines (157 loc) · 4.2 KB
/
dbtester.go
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package main
import (
"fmt"
"github.com/jmoiron/sqlx"
log "github.com/sirupsen/logrus"
"os/exec"
//"log"
"runtime"
"time"
)
type DbTester struct {
db *sqlx.DB
}
const schema = `
--
-- DSN: postgres://iktest@localhost/iktest?sslmode=disable
--
CREATE TABLE IF NOT EXISTS ik_table (
uuid_v1 uuid,
uuid_v4 uuid,
snowflake_id bigint,
ctime TIMESTAMP WITH TIME ZONE default now()
);
CREATE UNIQUE INDEX IF NOT EXISTS uuid_v1 ON ik_table (uuid_v1);
CREATE UNIQUE INDEX IF NOT EXISTS uuid_v4 ON ik_table (uuid_v4);
CREATE UNIQUE INDEX IF NOT EXISTS snowflake ON ik_table (snowflake_id);
`
func NewDbTester(dsn string) *DbTester {
client := &DbTester{}
client.db = sqlx.MustConnect("postgres", dsn)
return client
}
func (d *DbTester) InitDb() {
d.db.MustExec(schema)
}
// CleanDbCache cleans up cache/buffer owned by db and os.
func (d *DbTester) CleanDbCache() {
if pauseForCache {
fmt.Printf("NOTE: Please clear PostgreSQL cache, and press ENTER when done...")
var s string
fmt.Scanln(&s)
return
}
var cmdList []string
switch runtime.GOOS {
case "linux":
cmdList = []string{
"service postgresql stop",
"sync",
"echo 3 > /proc/sys/vm/drop_caches",
"service postgresql start",
}
case "darwin":
cmdList = []string{
"pg_ctl -D /usr/local/var/postgres stop",
"sync",
"sudo purge",
"pg_ctl -D /usr/local/var/postgres start",
}
}
log.Debug("Clearing PostgreSQL cache and restarting...")
for _, cmd := range cmdList {
log.Debug(cmd)
c := exec.Command("/bin/sh", "-c", cmd)
if err := c.Run(); err != nil {
log.Fatal(err)
}
}
log.Debug("Reconnecting to db...")
for i := 0; i < 100; i++ {
if err := d.db.Ping(); err == nil {
break
}
}
}
func (d *DbTester) ClearRecords() {
d.db.MustExec(`DELETE FROM ik_table`)
}
func (d *DbTester) InsertUuidV1(records []Record) {
defer timeTrack(time.Now(), "InsertUuidV1")
for _, record := range records {
d.db.MustExec(`INSERT INTO ik_table (uuid_v1) VALUES ($1)`, record.UuidV1)
}
}
func (d *DbTester) InsertUuidV4(records []Record) {
defer timeTrack(time.Now(), "InsertUuidV4")
for _, record := range records {
d.db.MustExec(`INSERT INTO ik_table (uuid_v4) VALUES ($1)`, record.UuidV4)
}
}
func (d *DbTester) InsertSnowflake(records []Record) {
defer timeTrack(time.Now(), "InsertSnowflake")
for _, record := range records {
d.db.MustExec(`INSERT INTO ik_table (snowflake_id) VALUES ($1)`, record.Snowflake)
}
}
func (d *DbTester) InsertAll(records []Record) {
defer timeTrack(time.Now(), "InsertAll")
for _, record := range records {
d.db.MustExec(`INSERT INTO ik_table (uuid_v1, uuid_v4, snowflake_id) VALUES ($1, $2, $3)`, record.UuidV1, record.UuidV4, record.Snowflake)
}
}
func (d *DbTester) SelectUuidV1(records []Record, sample []int, withCache bool) {
name := "SelectUuidV1"
if withCache {
name += "/cache"
} else {
name += "/clean"
}
defer timeTrack(time.Now(), name)
for _, idx := range sample {
row := d.db.QueryRowx(`SELECT * FROM ik_table WHERE uuid_v1 = $1`, records[idx].UuidV1)
var record Record
if err := row.StructScan(&record); err != nil {
log.Fatal("SelectUuidV1 fail")
}
//fmt.Println(record.ToCSV())
}
}
func (d *DbTester) SelectUuidV4(records []Record, sample []int, withCache bool) {
name := "SelectUuidV4"
if withCache {
name += "/cache"
} else {
name += "/clean"
}
defer timeTrack(time.Now(), name)
for _, idx := range sample {
row := d.db.QueryRowx(`SELECT * FROM ik_table WHERE uuid_v4 = $1`, records[idx].UuidV4)
var record Record
if err := row.StructScan(&record); err != nil {
log.Fatal("SelectUuidV4 fail")
}
//fmt.Println(record.ToCSV())
}
}
func (d *DbTester) SelectSnowflake(records []Record, sample []int, withCache bool) {
name := "SelectSnowflake"
if withCache {
name += "/cache"
} else {
name += "/clean"
}
defer timeTrack(time.Now(), name)
for _, idx := range sample {
row := d.db.QueryRowx(`SELECT * FROM ik_table WHERE snowflake_id = $1`, records[idx].Snowflake)
var record Record
if err := row.StructScan(&record); err != nil {
log.Fatal("SelectSnowflake fail")
}
//fmt.Println(record.ToCSV())
}
}
func timeTrack(start time.Time, name string) {
elapsed := time.Since(start)
log.Printf("%s: %s", name, elapsed)
}