Golang Config.DataDir方法代碼示例

func Open(cfg *config.Config) (*Ledis, error) {
	if len(cfg.DataDir) == 0 {
		cfg.DataDir = config.DefaultDataDir
	}

	ldb, err := store.Open(cfg)
	if err != nil {
		return nil, err
	}

	l := new(Ledis)

	l.quit = make(chan struct{})
	l.jobs = new(sync.WaitGroup)

	l.ldb = ldb

	if cfg.BinLog.MaxFileNum > 0 && cfg.BinLog.MaxFileSize > 0 {
		l.binlog, err = NewBinLog(cfg)
		if err != nil {
			return nil, err
		}
	} else {
		l.binlog = nil
	}

	for i := uint8(0); i < MaxDBNumber; i++ {
		l.dbs[i] = l.newDB(i)
	}

	l.activeExpireCycle()

	return l, nil
}

func TestBinLog(t *testing.T) {
	cfg := new(config.Config)

	cfg.BinLog.MaxFileNum = 1
	cfg.BinLog.MaxFileSize = 1024
	cfg.DataDir = "/tmp/ledis_binlog"

	os.RemoveAll(cfg.DataDir)

	b, err := NewBinLog(cfg)
	if err != nil {
		t.Fatal(err)
	}

	if err := b.Log(make([]byte, 1024)); err != nil {
		t.Fatal(err)
	}

	if err := b.Log(make([]byte, 1024)); err != nil {
		t.Fatal(err)
	}

	if fs, err := ioutil.ReadDir(b.LogPath()); err != nil {
		t.Fatal(err)
	} else if len(fs) != 2 {
		t.Fatal(len(fs))
	}
}

// StartAndGC starts GC routine based on config string settings.
// AdapterConfig: data_dir=./app.db,db=0
func (c *LedisCacher) StartAndGC(opts cache.Options) error {
	c.interval = opts.Interval

	cfg, err := ini.Load([]byte(strings.Replace(opts.AdapterConfig, ",", "\n", -1)))
	if err != nil {
		return err
	}

	db := 0
	opt := new(config.Config)
	for k, v := range cfg.Section("").KeysHash() {
		switch k {
		case "data_dir":
			opt.DataDir = v
		case "db":
			db = com.StrTo(v).MustInt()
		default:
			return fmt.Errorf("session/ledis: unsupported option '%s'", k)
		}
	}

	l, err := ledis.Open(opt)
	if err != nil {
		return fmt.Errorf("session/ledis: error opening db: %v", err)
	}
	c.c, err = l.Select(db)
	if err != nil {
		return err
	}

	go c.startGC()
	return nil
}

func TestScan(t *testing.T) {
	cfg := new(config.Config)
	cfg.DataDir = "/tmp/test_scan"
	cfg.Addr = "127.0.0.1:11185"

	os.RemoveAll(cfg.DataDir)

	s, err := NewApp(cfg)
	if err != nil {
		t.Fatal(err)
	}
	go s.Run()
	defer s.Close()

	cc := new(ledis.Config)
	cc.Addr = cfg.Addr
	cc.MaxIdleConns = 1
	c := ledis.NewClient(cc)
	defer c.Close()

	testKVScan(t, c)
	testHashScan(t, c)
	testListScan(t, c)
	testZSetScan(t, c)
	testSetScan(t, c)
	testBitScan(t, c)

}

// Init initializes ledis session provider.
// configs: data_dir=./app.db,db=0
func (p *LedisProvider) Init(expire int64, configs string) error {
	p.expire = expire

	cfg, err := ini.Load([]byte(strings.Replace(configs, ",", "\n", -1)))
	if err != nil {
		return err
	}

	db := 0
	opt := new(config.Config)
	for k, v := range cfg.Section("").KeysHash() {
		switch k {
		case "data_dir":
			opt.DataDir = v
		case "db":
			db = com.StrTo(v).MustInt()
		default:
			return fmt.Errorf("session/ledis: unsupported option '%s'", k)
		}
	}

	l, err := ledis.Open(opt)
	if err != nil {
		return fmt.Errorf("session/ledis: error opening db: %v", err)
	}
	p.c, err = l.Select(db)
	return err
}

func TestDump(t *testing.T) {
	cfgM := new(config.Config)
	cfgM.DataDir = "/tmp/test_ledis_master"

	os.RemoveAll(cfgM.DataDir)

	master, err := Open(cfgM)
	if err != nil {
		t.Fatal(err)
	}

	cfgS := new(config.Config)
	cfgS.DataDir = "/tmp/test_ledis_slave"
	os.RemoveAll(cfgM.DataDir)

	var slave *Ledis
	if slave, err = Open(cfgS); err != nil {
		t.Fatal(err)
	}

	db, _ := master.Select(0)

	db.Set([]byte("a"), []byte("1"))
	db.Set([]byte("b"), []byte("2"))
	db.Set([]byte("c"), []byte("3"))

	if err := master.DumpFile("/tmp/testdb.dump"); err != nil {
		t.Fatal(err)
	}

	if _, err := slave.LoadDumpFile("/tmp/testdb.dump"); err != nil {
		t.Fatal(err)
	}

	it := master.ldb.RangeLimitIterator(nil, nil, store.RangeClose, 0, -1)
	for ; it.Valid(); it.Next() {
		key := it.Key()
		value := it.Value()

		if v, err := slave.ldb.Get(key); err != nil {
			t.Fatal(err)
		} else if !bytes.Equal(v, value) {
			t.Fatal("load dump error")
		}
	}
}

func Open(cfg *config.Config) (*Ledis, error) {
	if len(cfg.DataDir) == 0 {
		cfg.DataDir = config.DefaultDataDir
	}

	if cfg.Databases == 0 {
		cfg.Databases = 16
	} else if cfg.Databases > MaxDatabases {
		cfg.Databases = MaxDatabases
	}

	os.MkdirAll(cfg.DataDir, 0755)

	var err error

	l := new(Ledis)
	l.cfg = cfg

	if l.lock, err = filelock.Lock(path.Join(cfg.DataDir, "LOCK")); err != nil {
		return nil, err
	}

	l.quit = make(chan struct{})

	if l.ldb, err = store.Open(cfg); err != nil {
		return nil, err
	}

	if cfg.UseReplication {
		if l.r, err = rpl.NewReplication(cfg); err != nil {
			return nil, err
		}

		l.rc = make(chan struct{}, 1)
		l.rbatch = l.ldb.NewWriteBatch()
		l.rDoneCh = make(chan struct{}, 1)

		l.wg.Add(1)
		go l.onReplication()

		//first we must try wait all replication ok
		//maybe some logs are not committed
		l.WaitReplication()
	} else {
		l.r = nil
	}

	l.dbs = make(map[int]*DB, 16)

	l.checkTTL()

	return l, nil
}

func NewApp(cfg *config.Config) (*App, error) {
	if len(cfg.DataDir) == 0 {
		println("use default datadir %s", config.DefaultDataDir)
		cfg.DataDir = config.DefaultDataDir
	}

	app := new(App)

	app.quit = make(chan struct{})

	app.closed = false

	app.cfg = cfg

	var err error

	if app.info, err = newInfo(app); err != nil {
		return nil, err
	}

	if app.listener, err = net.Listen(netType(cfg.Addr), cfg.Addr); err != nil {
		return nil, err
	}

	if len(cfg.HttpAddr) > 0 {
		if app.httpListener, err = net.Listen(netType(cfg.HttpAddr), cfg.HttpAddr); err != nil {
			return nil, err
		}
	}

	if len(cfg.AccessLog) > 0 {
		if path.Dir(cfg.AccessLog) == "." {
			app.access, err = newAcessLog(path.Join(cfg.DataDir, cfg.AccessLog))
		} else {
			app.access, err = newAcessLog(cfg.AccessLog)
		}

		if err != nil {
			return nil, err
		}
	}

	if app.ldb, err = ledis.Open(cfg); err != nil {
		return nil, err
	}

	app.m = newMaster(app)

	app.openScript()

	return app, nil
}

func newTestRocksDB() *DB {
	cfg := new(config.Config)
	cfg.DBName = "rocksdb"
	cfg.DataDir = "/tmp/testdb"

	os.RemoveAll(getStorePath(cfg))

	db, err := Open(cfg)
	if err != nil {
		println(err.Error())
		panic(err)
	}

	return db
}

func newTestLMDB() *DB {
	cfg := new(config.Config)
	cfg.DBName = "lmdb"
	cfg.DataDir = "/tmp/testdb"
	cfg.LMDB.MapSize = 10 * 1024 * 1024

	os.RemoveAll(getStorePath(cfg))

	db, err := Open(cfg)
	if err != nil {
		println(err.Error())
		panic(err)
	}

	return db
}

func InitDb() {
	initLedisFunc := func() {
		cfg := new(config.Config)
		cfg.DataDir = beego.AppConfig.String("ledisdb::DataDir")
		var err error
		nowLedis, err = ledis.Open(cfg)
		if err != nil {
			println(err.Error())
			panic(err)
		}
	}

	ledisOnce.Do(initLedisFunc)

	db, _ := beego.AppConfig.Int("ledisdb::DB")

	LedisDB, _ = nowLedis.Select(db)
}

func getTestDB() *DB {
	f := func() {
		cfg := new(config.Config)
		cfg.DataDir = "/tmp/test_ledis"
		cfg.BinLog.MaxFileSize = 1073741824
		cfg.BinLog.MaxFileNum = 3

		os.RemoveAll(cfg.DataDir)

		var err error
		testLedis, err = Open(cfg)
		if err != nil {
			println(err.Error())
			panic(err)
		}
	}

	testLedisOnce.Do(f)
	db, _ := testLedis.Select(0)
	return db
}

func testTx(t *testing.T, name string) {
	cfg := new(config.Config)
	cfg.DataDir = "/tmp/ledis_test_tx"

	cfg.DBName = name
	cfg.LMDB.MapSize = 10 * 1024 * 1024

	os.RemoveAll(cfg.DataDir)

	l, err := Open(cfg)
	if err != nil {
		t.Fatal(err)
	}

	defer l.Close()

	db, _ := l.Select(0)

	testTxRollback(t, db)
	testTxCommit(t, db)
	testTxSelect(t, db)
}

func TestStore(t *testing.T) {
	cfg := new(config.Config)
	cfg.DataDir = "/tmp/testdb"
	cfg.LMDB.MapSize = 10 * 1024 * 1024

	ns := driver.ListStores()
	for _, s := range ns {
		cfg.DBName = s

		os.RemoveAll(getStorePath(cfg))

		db, err := Open(cfg)
		if err != nil {
			t.Fatal(err)
		}

		testStore(db, t)
		testClear(db, t)
		testTx(db, t)

		db.Close()
	}
}

// init ledis session
// savepath like ledis server saveDataPath,pool size
// e.g. 127.0.0.1:6379,100,astaxie
func (lp *LedisProvider) SessionInit(maxlifetime int64, savePath string) error {
	var err error
	lp.maxlifetime = maxlifetime
	configs := strings.Split(savePath, ",")
	if len(configs) == 1 {
		lp.savePath = configs[0]
	} else if len(configs) == 2 {
		lp.savePath = configs[0]
		lp.db, err = strconv.Atoi(configs[1])
		if err != nil {
			return err
		}
	}
	cfg := new(config.Config)
	cfg.DataDir = lp.savePath
	nowLedis, err := ledis.Open(cfg)
	c, err = nowLedis.Select(lp.db)
	if err != nil {
		println(err)
		return nil
	}
	return nil
}