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mirror of https://github.com/alexedwards/scs.git synced 2025-07-13 01:00:17 +02:00

[feature] Add MySQL storage engine

This commit is contained in:
Alex Edwards
2016-08-19 12:17:33 +02:00
parent b3db9a65f0
commit 5c1779caa1
3 changed files with 374 additions and 0 deletions

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@ -0,0 +1,8 @@
```sql
CREATE TABLE IF NOT EXISTS sessions (
token CHAR(43) PRIMARY KEY,
data BLOB NOT NULL,
expiry TIMESTAMP(6) NOT NULL
);
INDEX ON EXPIRY.....
```

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package mysqlstore
import (
"database/sql"
"log"
"time"
_ "github.com/go-sql-driver/mysql"
)
type MySQLStore struct {
*sql.DB
stopSweeper chan bool
}
func New(db *sql.DB, sweepInterval time.Duration) *MySQLStore {
m := &MySQLStore{DB: db}
if sweepInterval > 0 {
go m.startSweeper(sweepInterval)
}
return m
}
func (m *MySQLStore) Find(token string) ([]byte, bool, error) {
var b []byte
row := m.DB.QueryRow("SELECT data FROM sessions WHERE token = ? AND UTC_TIMESTAMP(6) < expiry", token)
err := row.Scan(&b)
if err == sql.ErrNoRows {
return nil, false, nil
} else if err != nil {
return nil, false, err
}
return b, true, nil
}
func (m *MySQLStore) Save(token string, b []byte, expiry time.Time) error {
_, err := m.DB.Exec("INSERT INTO sessions (token, data, expiry) VALUES (?, ?, ?) ON DUPLICATE KEY UPDATE data = VALUES(data), expiry = VALUES(expiry)", token, b, expiry.UTC())
if err != nil {
return err
}
return nil
}
func (m *MySQLStore) Delete(token string) error {
_, err := m.DB.Exec("DELETE FROM sessions WHERE token = ?", token)
return err
}
func (m *MySQLStore) startSweeper(interval time.Duration) {
m.stopSweeper = make(chan bool)
ticker := time.NewTicker(interval)
for {
select {
case <-ticker.C:
err := m.deleteExpired()
if err != nil {
log.Println(err)
}
case <-m.stopSweeper:
ticker.Stop()
return
}
}
}
func (m *MySQLStore) StopSweeper() {
if m.stopSweeper != nil {
m.stopSweeper <- true
}
}
func (m *MySQLStore) deleteExpired() error {
_, err := m.DB.Exec("DELETE FROM sessions WHERE expiry < UTC_TIMESTAMP(6)")
return err
}

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@ -0,0 +1,291 @@
package mysqlstore
import (
"bytes"
"database/sql"
"os"
"reflect"
"testing"
"time"
"github.com/alexedwards/scs/session"
)
func TestNew(t *testing.T) {
dsn := os.Getenv("SESSION_MYSQL_TEST_DSN")
db, err := sql.Open("mysql", dsn)
if err != nil {
t.Fatal(err)
}
defer db.Close()
if err = db.Ping(); err != nil {
t.Fatal(err)
}
m := New(db, 0)
_, ok := interface{}(m).(session.Engine)
if ok == false {
t.Fatalf("got %v: expected %v", ok, true)
}
}
func TestFind(t *testing.T) {
dsn := os.Getenv("SESSION_MYSQL_TEST_DSN")
db, err := sql.Open("mysql", dsn)
if err != nil {
t.Fatal(err)
}
defer db.Close()
if err = db.Ping(); err != nil {
t.Fatal(err)
}
_, err = db.Exec("TRUNCATE TABLE sessions")
if err != nil {
t.Fatal(err)
}
_, err = db.Exec("INSERT INTO sessions VALUES('session_token', 'encoded_data', UTC_TIMESTAMP(6) + INTERVAL 1 MINUTE)")
if err != nil {
t.Fatal(err)
}
m := New(db, 0)
b, found, err := m.Find("session_token")
if err != nil {
t.Fatal(err)
}
if found != true {
t.Fatalf("got %v: expected %v", found, true)
}
if bytes.Equal(b, []byte("encoded_data")) == false {
t.Fatalf("got %v: expected %v", b, []byte("encoded_data"))
}
}
func TestFindMissing(t *testing.T) {
dsn := os.Getenv("SESSION_MYSQL_TEST_DSN")
db, err := sql.Open("mysql", dsn)
if err != nil {
t.Fatal(err)
}
defer db.Close()
if err = db.Ping(); err != nil {
t.Fatal(err)
}
_, err = db.Exec("TRUNCATE TABLE sessions")
if err != nil {
t.Fatal(err)
}
m := New(db, 0)
_, found, err := m.Find("missing_session_token")
if err != nil {
t.Fatalf("got %v: expected %v", err, nil)
}
if found != false {
t.Fatalf("got %v: expected %v", found, false)
}
}
func TestSaveNew(t *testing.T) {
dsn := os.Getenv("SESSION_MYSQL_TEST_DSN")
db, err := sql.Open("mysql", dsn)
if err != nil {
t.Fatal(err)
}
defer db.Close()
if err = db.Ping(); err != nil {
t.Fatal(err)
}
_, err = db.Exec("TRUNCATE TABLE sessions")
if err != nil {
t.Fatal(err)
}
m := New(db, 0)
err = m.Save("session_token", []byte("encoded_data"), time.Now().Add(time.Minute))
if err != nil {
t.Fatal(err)
}
row := db.QueryRow("SELECT data FROM sessions WHERE token = 'session_token'")
var data []byte
err = row.Scan(&data)
if err != nil {
t.Fatal(err)
}
if reflect.DeepEqual(data, []byte("encoded_data")) == false {
t.Fatalf("got %v: expected %v", data, []byte("encoded_data"))
}
}
func TestSaveUpdated(t *testing.T) {
dsn := os.Getenv("SESSION_MYSQL_TEST_DSN")
db, err := sql.Open("mysql", dsn)
if err != nil {
t.Fatal(err)
}
defer db.Close()
if err = db.Ping(); err != nil {
t.Fatal(err)
}
_, err = db.Exec("TRUNCATE TABLE sessions")
if err != nil {
t.Fatal(err)
}
_, err = db.Exec("INSERT INTO sessions VALUES('session_token', 'encoded_data', UTC_TIMESTAMP(6) + INTERVAL 1 MINUTE)")
if err != nil {
t.Fatal(err)
}
m := New(db, 0)
err = m.Save("session_token", []byte("new_encoded_data"), time.Now().Add(time.Minute))
if err != nil {
t.Fatal(err)
}
row := db.QueryRow("SELECT data FROM sessions WHERE token = 'session_token'")
var data []byte
err = row.Scan(&data)
if err != nil {
t.Fatal(err)
}
if reflect.DeepEqual(data, []byte("new_encoded_data")) == false {
t.Fatalf("got %v: expected %v", data, []byte("new_encoded_data"))
}
}
func TestExpiry(t *testing.T) {
dsn := os.Getenv("SESSION_MYSQL_TEST_DSN")
db, err := sql.Open("mysql", dsn)
if err != nil {
t.Fatal(err)
}
defer db.Close()
if err = db.Ping(); err != nil {
t.Fatal(err)
}
_, err = db.Exec("TRUNCATE TABLE sessions")
if err != nil {
t.Fatal(err)
}
m := New(db, 0)
err = m.Save("session_token", []byte("encoded_data"), time.Now().Add(100*time.Millisecond))
if err != nil {
t.Fatal(err)
}
_, found, _ := m.Find("session_token")
if found != true {
t.Fatalf("got %v: expected %v", found, true)
}
time.Sleep(100 * time.Millisecond)
_, found, _ = m.Find("session_token")
if found != false {
t.Fatalf("got %v: expected %v", found, false)
}
}
func TestDelete(t *testing.T) {
dsn := os.Getenv("SESSION_MYSQL_TEST_DSN")
db, err := sql.Open("mysql", dsn)
if err != nil {
t.Fatal(err)
}
defer db.Close()
if err = db.Ping(); err != nil {
t.Fatal(err)
}
_, err = db.Exec("TRUNCATE TABLE sessions")
if err != nil {
t.Fatal(err)
}
_, err = db.Exec("INSERT INTO sessions VALUES('session_token', 'encoded_data', UTC_TIMESTAMP(6) + INTERVAL 1 MINUTE)")
if err != nil {
t.Fatal(err)
}
m := New(db, 0)
err = m.Delete("session_token")
if err != nil {
t.Fatal(err)
}
row := db.QueryRow("SELECT COUNT(*) FROM sessions WHERE token = 'session_token'")
var count int
err = row.Scan(&count)
if err != nil {
t.Fatal(err)
}
if count != 0 {
t.Fatalf("got %d: expected %d", count, 0)
}
}
func TestSweeper(t *testing.T) {
dsn := os.Getenv("SESSION_MYSQL_TEST_DSN")
db, err := sql.Open("mysql", dsn)
if err != nil {
t.Fatal(err)
}
defer db.Close()
if err = db.Ping(); err != nil {
t.Fatal(err)
}
_, err = db.Exec("TRUNCATE TABLE sessions")
if err != nil {
t.Fatal(err)
}
m := New(db, 200*time.Millisecond)
defer m.StopSweeper()
err = m.Save("session_token", []byte("encoded_data"), time.Now().Add(100*time.Millisecond))
if err != nil {
t.Fatal(err)
}
row := db.QueryRow("SELECT COUNT(*) FROM sessions WHERE token = 'session_token'")
var count int
err = row.Scan(&count)
if err != nil {
t.Fatal(err)
}
if count != 1 {
t.Fatalf("got %d: expected %d", count, 1)
}
time.Sleep(300 * time.Millisecond)
row = db.QueryRow("SELECT COUNT(*) FROM sessions WHERE token = 'session_token'")
err = row.Scan(&count)
if err != nil {
t.Fatal(err)
}
if count != 0 {
t.Fatalf("got %d: expected %d", count, 0)
}
}
func TestStopNilSweeper(t *testing.T) {
dsn := os.Getenv("SESSION_MYSQL_TEST_DSN")
db, err := sql.Open("mysql", dsn)
if err != nil {
t.Fatal(err)
}
defer db.Close()
if err = db.Ping(); err != nil {
t.Fatal(err)
}
m := New(db, 0)
time.Sleep(100 * time.Millisecond)
// A send to a nil channel will block forever
m.StopSweeper()
}