You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
92 lines
1.4 KiB
92 lines
1.4 KiB
package redis
|
|
|
|
// Not thread-safe.
|
|
type Pipeline struct {
|
|
*Client
|
|
|
|
closed bool
|
|
}
|
|
|
|
func (c *Client) Pipeline() *Pipeline {
|
|
return &Pipeline{
|
|
Client: &Client{
|
|
baseClient: &baseClient{
|
|
opt: c.opt,
|
|
connPool: c.connPool,
|
|
|
|
cmds: make([]Cmder, 0),
|
|
},
|
|
},
|
|
}
|
|
}
|
|
|
|
func (c *Client) Pipelined(f func(*Pipeline) error) ([]Cmder, error) {
|
|
pc := c.Pipeline()
|
|
if err := f(pc); err != nil {
|
|
return nil, err
|
|
}
|
|
cmds, err := pc.Exec()
|
|
pc.Close()
|
|
return cmds, err
|
|
}
|
|
|
|
func (c *Pipeline) Close() error {
|
|
c.closed = true
|
|
return nil
|
|
}
|
|
|
|
func (c *Pipeline) Discard() error {
|
|
if c.closed {
|
|
return errClosed
|
|
}
|
|
c.cmds = c.cmds[:0]
|
|
return nil
|
|
}
|
|
|
|
// Exec always returns list of commands and error of the first failed
|
|
// command if any.
|
|
func (c *Pipeline) Exec() ([]Cmder, error) {
|
|
if c.closed {
|
|
return nil, errClosed
|
|
}
|
|
|
|
cmds := c.cmds
|
|
c.cmds = make([]Cmder, 0)
|
|
|
|
if len(cmds) == 0 {
|
|
return []Cmder{}, nil
|
|
}
|
|
|
|
cn, err := c.conn()
|
|
if err != nil {
|
|
setCmdsErr(cmds, err)
|
|
return cmds, err
|
|
}
|
|
|
|
if err := c.execCmds(cn, cmds); err != nil {
|
|
c.freeConn(cn, err)
|
|
return cmds, err
|
|
}
|
|
|
|
c.putConn(cn)
|
|
return cmds, nil
|
|
}
|
|
|
|
func (c *Pipeline) execCmds(cn *conn, cmds []Cmder) error {
|
|
if err := c.writeCmd(cn, cmds...); err != nil {
|
|
setCmdsErr(cmds, err)
|
|
return err
|
|
}
|
|
|
|
var firstCmdErr error
|
|
for _, cmd := range cmds {
|
|
if err := cmd.parseReply(cn.rd); err != nil {
|
|
if firstCmdErr == nil {
|
|
firstCmdErr = err
|
|
}
|
|
}
|
|
}
|
|
|
|
return firstCmdErr
|
|
}
|