Add a redis session handler

Author: leeqvip

session/redis-handler.go

@@ -0,0 +1,41 @@
+package session
+
+import (
+	"encoding/json"
+	"github.com/gomodule/redigo/redis"
+	"time"
+)
+
+type RedisHandler struct {
+	pool     *redis.Pool // redis connection pool
+	prefix   string
+	lifetime time.Duration
+}
+
+// NewRedisHandler Create a redis session handler
+func NewRedisHandler(pool *redis.Pool, prefix string, lifetime time.Duration) *RedisHandler {
+	return &RedisHandler{pool, prefix, lifetime}
+}
+
+func (rh *RedisHandler) Read(id string) string {
+	c := rh.pool.Get()
+	defer c.Close()
+
+	b, err := redis.Bytes(c.Do("GET", rh.prefix+":"+id))
+	if err != nil {
+		return ""
+	}
+
+	var value string
+
+	json.Unmarshal(b, value)
+
+	return value
+}
+
+func (rh *RedisHandler) Write(id string, data string) {
+	c := rh.pool.Get()
+	defer c.Close()
+
+	c.Do("SETEX", rh.prefix+":"+id, int64(rh.lifetime), data)
+}