mirror of https://github.com/go-redis/redis.git
194 lines
3.4 KiB
Go
194 lines
3.4 KiB
Go
package redis
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import (
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"net"
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"time"
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"github.com/golang/glog"
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)
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type baseClient struct {
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connPool pool
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opt *Options
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cmds []Cmder
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}
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func (c *baseClient) writeCmd(cn *conn, cmds ...Cmder) error {
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buf := make([]byte, 0, 1000)
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for _, cmd := range cmds {
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buf = appendCmd(buf, cmd.args())
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}
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_, err := cn.Write(buf)
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return err
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}
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func (c *baseClient) conn() (*conn, error) {
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cn, isNew, err := c.connPool.Get()
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if err != nil {
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return nil, err
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}
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if isNew && (c.opt.Password != "" || c.opt.DB > 0) {
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if err = c.init(cn, c.opt.Password, c.opt.DB); err != nil {
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c.removeConn(cn)
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return nil, err
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}
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}
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return cn, nil
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}
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func (c *baseClient) init(cn *conn, password string, db int64) error {
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// Client is not closed on purpose.
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client := &Client{
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baseClient: &baseClient{
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opt: c.opt,
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connPool: newSingleConnPool(c.connPool, cn, false),
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},
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}
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if password != "" {
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auth := client.Auth(password)
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if auth.Err() != nil {
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return auth.Err()
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}
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}
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if db > 0 {
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sel := client.Select(db)
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if sel.Err() != nil {
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return sel.Err()
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}
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}
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return nil
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}
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func (c *baseClient) freeConn(cn *conn, err error) {
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if err == Nil || err == TxFailedErr {
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c.putConn(cn)
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} else {
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c.removeConn(cn)
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}
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}
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func (c *baseClient) removeConn(cn *conn) {
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if err := c.connPool.Remove(cn); err != nil {
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glog.Errorf("pool.Remove failed: %s", err)
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}
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}
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func (c *baseClient) putConn(cn *conn) {
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if err := c.connPool.Put(cn); err != nil {
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glog.Errorf("pool.Put failed: %s", err)
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}
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}
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func (c *baseClient) Process(cmd Cmder) {
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if c.cmds == nil {
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c.run(cmd)
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} else {
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c.cmds = append(c.cmds, cmd)
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}
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}
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func (c *baseClient) run(cmd Cmder) {
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cn, err := c.conn()
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if err != nil {
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cmd.setErr(err)
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return
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}
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cn.writeTimeout = c.opt.WriteTimeout
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if timeout := cmd.writeTimeout(); timeout != nil {
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cn.writeTimeout = *timeout
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}
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cn.readTimeout = c.opt.ReadTimeout
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if timeout := cmd.readTimeout(); timeout != nil {
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cn.readTimeout = *timeout
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}
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if err := c.writeCmd(cn, cmd); err != nil {
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c.freeConn(cn, err)
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cmd.setErr(err)
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return
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}
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val, err := cmd.parseReply(cn.rd)
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if err != nil {
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c.freeConn(cn, err)
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cmd.setErr(err)
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return
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}
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c.putConn(cn)
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cmd.setVal(val)
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}
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func (c *baseClient) Close() error {
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return c.connPool.Close()
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}
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//------------------------------------------------------------------------------
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type Options struct {
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Addr string
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Password string
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DB int64
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PoolSize int
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DialTimeout time.Duration
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ReadTimeout time.Duration
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WriteTimeout time.Duration
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IdleTimeout time.Duration
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}
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func (opt *Options) getPoolSize() int {
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if opt.PoolSize == 0 {
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return 10
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}
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return opt.PoolSize
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}
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func (opt *Options) getDialTimeout() time.Duration {
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if opt.DialTimeout == 0 {
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return 5 * time.Second
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}
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return opt.DialTimeout
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}
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//------------------------------------------------------------------------------
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type Client struct {
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*baseClient
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}
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func newClient(opt *Options, dial func() (net.Conn, error)) *Client {
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return &Client{
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baseClient: &baseClient{
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opt: opt,
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connPool: newConnPool(newConnFunc(dial), opt.getPoolSize(), opt.IdleTimeout),
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},
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}
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}
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func NewTCPClient(opt *Options) *Client {
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dial := func() (net.Conn, error) {
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return net.DialTimeout("tcp", opt.Addr, opt.getDialTimeout())
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}
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return newClient(opt, dial)
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}
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func NewUnixClient(opt *Options) *Client {
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dial := func() (net.Conn, error) {
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return net.DialTimeout("unix", opt.Addr, opt.getDialTimeout())
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}
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return newClient(opt, dial)
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}
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