add GetSecDsn to get config description

redis.go

@@ -1,11 +1,25 @@
 package redis
 
 import (
+	redigo "github.com/gomodule/redigo/redis"
 	"qoobing.com/gomod/redis/redis"
 	"qoobing.com/gomod/redis/sentinel"
 )
 
-type Config = sentinel.Config
+type (
+    Conn   = redigo.Conn
+    Pool   = redigo.Pool
+    Config = sentinel.Config
+)
 
-var NewPool = redis.NewPool
+var NewRedisPool = redis.NewPool
 var NewSentinelPool = sentinel.NewPool
+
+func NewPool(cfg Config) *redigo.Pool {
+	if cfg.Master != "" {
+		return NewRedisPool(cfg)
+	} else if cfg.MasterName != "" {
+		return NewSentinelPool(cfg)
+	}
+	panic("invalid config: Master & MasterName are both empty")
+}

redis/redis.go

@@ -56,6 +56,10 @@ func NewPool(cfg Config) *redis.Pool {
 		logStdWriter = os.Stdout
 		logStdFlags  = log.Ldate | log.Lmicroseconds | log.Lshortfile
 		logStdLogger = log.New(logStdWriter, logStdPrefix, logStdFlags)
+		logErrPrefix = "ERRO "
+		logErrWriter = os.Stderr
+		logErrFlags  = log.Ldate | log.Lmicroseconds | log.Lshortfile
+		logErrLogger = log.New(logErrWriter, logErrPrefix, logErrFlags)
 	)
 	return &redis.Pool{
 		MaxIdle:     *cfg.MaxIdle,
@@ -65,6 +69,7 @@ func NewPool(cfg Config) *redis.Pool {
 		Dial: func() (redis.Conn, error) {
 			c, err := redis.Dial("tcp", masterAddr)
 			if err != nil {
+                logErrLogger.Output(2, fmt.Sprintf("connect [%s] error: %s", masterAddr, err))
 				return nil, err
 			}
 
@@ -76,8 +81,10 @@ func NewPool(cfg Config) *redis.Pool {
 			}
 
 			if err != nil {
+                logErrLogger.Output(2, fmt.Sprintf("auth [%s] error: %s", masterAddr, err))
 				return nil, fmt.Errorf("redis master AUTH failed: <%s>", err.Error())
 			} else if okstr != "OK" {
+                logErrLogger.Output(2, fmt.Sprintf("auth [%s] not return ok but '%s'", masterAddr, okstr))
 				return nil, fmt.Errorf("redis master AUTH failed: <%s>", okstr)
 			}
 

sentinel/sentinel.go

@@ -29,6 +29,15 @@ type Config struct {
 	IdleTimeout      *int   `toml:"idle_timeout"`      //空闲超时时间
 }
 
+func GetSecDsn(cfg Config) (dsn string) {
+	if cfg.Master != "" {
+		dsn += fmt.Sprintf("mode=redis address=%s", cfg.Master)
+	} else if cfg.MasterName != "" {
+		dsn += fmt.Sprintf("mode=sentinel address=%s mastername=%s", cfg.Sentinels, cfg.MasterName)
+	}
+	return dsn
+}
+
 type Sentinel struct {
 	// Addrs is a slice with known Sentinel addresses.
 	Addrs []string
@@ -121,6 +130,10 @@ func NewPool(cfg Config) *redis.Pool {
 		logStdWriter = os.Stdout
 		logStdFlags  = log.Ldate | log.Lmicroseconds | log.Lshortfile
 		logStdLogger = log.New(logStdWriter, logStdPrefix, logStdFlags)
+		logErrPrefix = "ERRO "
+		logErrWriter = os.Stderr
+		logErrFlags  = log.Ldate | log.Lmicroseconds | log.Lshortfile
+		logErrLogger = log.New(logErrWriter, logErrPrefix, logErrFlags)
 	)
 	return &redis.Pool{
 		MaxIdle:     *cfg.MaxIdle,
@@ -130,11 +143,13 @@ func NewPool(cfg Config) *redis.Pool {
 		Dial: func() (redis.Conn, error) {
 			masterAddr, err := sntnl.MasterAddr()
 			if err != nil {
+				logErrLogger.Output(2, fmt.Sprintf("get master from sentinel error: %s", err))
 				return nil, err
 			}
 
 			c, err := redis.Dial("tcp", masterAddr)
 			if err != nil {
+				logErrLogger.Output(2, fmt.Sprintf("connect [%s] error: %s", masterAddr, err))
 				return nil, err
 			}
 
@@ -146,8 +161,10 @@ func NewPool(cfg Config) *redis.Pool {
 			}
 
 			if err != nil {
+				logErrLogger.Output(2, fmt.Sprintf("auth [%s] error: %s", masterAddr, err))
 				return nil, fmt.Errorf("redis master AUTH failed: <%s>", err.Error())
 			} else if okstr != "OK" {
+				logErrLogger.Output(2, fmt.Sprintf("auth [%s] not return ok but '%s'", masterAddr, okstr))
 				return nil, fmt.Errorf("redis master AUTH failed: <%s>", okstr)
 			}
 
@@ -156,6 +173,7 @@ func NewPool(cfg Config) *redis.Pool {
 				err = fmt.Errorf(
 					"master(%s) got by name '%s' is not redis master",
 					masterAddr, masterName)
+				logErrLogger.Output(2, err.Error())
 				return nil, err
 			}