mirror of https://github.com/tidwall/tile38.git
123 lines
2.3 KiB
Go
123 lines
2.3 KiB
Go
package endpoint
|
|
|
|
import (
|
|
"bufio"
|
|
"errors"
|
|
"fmt"
|
|
"net"
|
|
"strconv"
|
|
"strings"
|
|
"sync"
|
|
"time"
|
|
)
|
|
|
|
const (
|
|
disqueExpiresAfter = time.Second * 30
|
|
)
|
|
|
|
type DisqueEndpointConn struct {
|
|
mu sync.Mutex
|
|
ep Endpoint
|
|
ex bool
|
|
t time.Time
|
|
conn net.Conn
|
|
rd *bufio.Reader
|
|
}
|
|
|
|
func newDisqueEndpointConn(ep Endpoint) *DisqueEndpointConn {
|
|
return &DisqueEndpointConn{
|
|
ep: ep,
|
|
t: time.Now(),
|
|
}
|
|
}
|
|
|
|
func (conn *DisqueEndpointConn) Expired() bool {
|
|
conn.mu.Lock()
|
|
defer conn.mu.Unlock()
|
|
if !conn.ex {
|
|
if time.Now().Sub(conn.t) > disqueExpiresAfter {
|
|
if conn.conn != nil {
|
|
conn.close()
|
|
}
|
|
conn.ex = true
|
|
}
|
|
}
|
|
return conn.ex
|
|
}
|
|
|
|
func (conn *DisqueEndpointConn) close() {
|
|
if conn.conn != nil {
|
|
conn.conn.Close()
|
|
conn.conn = nil
|
|
}
|
|
conn.rd = nil
|
|
}
|
|
|
|
func (conn *DisqueEndpointConn) Send(msg string) error {
|
|
conn.mu.Lock()
|
|
defer conn.mu.Unlock()
|
|
if conn.ex {
|
|
return errExpired
|
|
}
|
|
conn.t = time.Now()
|
|
if conn.conn == nil {
|
|
addr := fmt.Sprintf("%s:%d", conn.ep.Disque.Host, conn.ep.Disque.Port)
|
|
var err error
|
|
conn.conn, err = net.Dial("tcp", addr)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
conn.rd = bufio.NewReader(conn.conn)
|
|
}
|
|
var args []string
|
|
args = append(args, "ADDJOB", conn.ep.Disque.QueueName, msg, "0")
|
|
if conn.ep.Disque.Options.Replicate > 0 {
|
|
args = append(args, "REPLICATE", strconv.FormatInt(int64(conn.ep.Disque.Options.Replicate), 10))
|
|
}
|
|
cmd := buildRedisCommand(args)
|
|
if _, err := conn.conn.Write(cmd); err != nil {
|
|
conn.close()
|
|
return err
|
|
}
|
|
c, err := conn.rd.ReadByte()
|
|
if err != nil {
|
|
conn.close()
|
|
return err
|
|
}
|
|
if c != '-' && c != '+' {
|
|
conn.close()
|
|
return errors.New("invalid disque reply")
|
|
}
|
|
ln, err := conn.rd.ReadBytes('\n')
|
|
if err != nil {
|
|
conn.close()
|
|
return err
|
|
}
|
|
if len(ln) < 2 || ln[len(ln)-2] != '\r' {
|
|
conn.close()
|
|
return errors.New("invalid disque reply")
|
|
}
|
|
id := string(ln[:len(ln)-2])
|
|
p := strings.Split(id, "-")
|
|
if len(p) != 4 {
|
|
conn.close()
|
|
return errors.New("invalid disque reply")
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func buildRedisCommand(args []string) []byte {
|
|
var cmd []byte
|
|
cmd = append(cmd, '*')
|
|
cmd = strconv.AppendInt(cmd, int64(len(args)), 10)
|
|
cmd = append(cmd, '\r', '\n')
|
|
for _, arg := range args {
|
|
cmd = append(cmd, '$')
|
|
cmd = strconv.AppendInt(cmd, int64(len(arg)), 10)
|
|
cmd = append(cmd, '\r', '\n')
|
|
cmd = append(cmd, arg...)
|
|
cmd = append(cmd, '\r', '\n')
|
|
}
|
|
return cmd
|
|
}
|