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pool.go
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pool.go
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package georedis
import (
"encoding/json"
"io/ioutil"
"time"
"github.com/garyburd/redigo/redis"
)
// PoolConfig is the struct for config pool
type PoolConfig struct {
IdleConn int `json:"idle_conn"`
ActiveConn int `json:"active_conn"`
Protocol string `json:"protocol"`
Addr string `json:"addr"`
DB int `json:"db"`
TobTimeout string `json:"tob_timeout"`
IdleTimeout string `json:"idle_timeout"`
ConnTimeout string `json:"conn_timeout"`
ReadTimeout string `json:"read_timeout"`
WriteTimeout string `json:"write_timeout"`
}
// NewPool creates a redis connection pool
func NewPool(configPath string) (*redis.Pool, error) {
r, err := ioutil.ReadFile(configPath)
if err != nil {
return nil, err
}
cfg := &PoolConfig{}
err = json.Unmarshal(r, cfg)
if err != nil {
return nil, err
}
tobT, err := time.ParseDuration(cfg.TobTimeout)
if err != nil {
return nil, err
}
idleT, err := time.ParseDuration(cfg.IdleTimeout)
if err != nil {
return nil, err
}
connT, err := time.ParseDuration(cfg.ConnTimeout)
if err != nil {
return nil, err
}
readT, err := time.ParseDuration(cfg.ReadTimeout)
if err != nil {
return nil, err
}
writeT, err := time.ParseDuration(cfg.WriteTimeout)
if err != nil {
return nil, err
}
return &redis.Pool{
MaxIdle: cfg.IdleConn,
MaxActive: cfg.ActiveConn,
Dial: func() (redis.Conn, error) {
connOption := redis.DialConnectTimeout(connT)
readOption := redis.DialReadTimeout(readT)
writeOption := redis.DialWriteTimeout(writeT)
dbOption := redis.DialDatabase(cfg.DB)
c, err := redis.Dial(
cfg.Protocol,
cfg.Addr,
connOption,
readOption,
writeOption,
dbOption,
)
if err != nil {
return nil, err
}
return c, nil
},
TestOnBorrow: func(c redis.Conn, t time.Time) error {
if time.Since(t) < tobT {
return nil
}
_, err := c.Do("PING")
return err
},
IdleTimeout: idleT,
Wait: true,
}, nil
}