Fix the wrong parameter bug in ledis session.

session/ledis/ledis_session.go

 package session
 
 import (
-	"net/http"
-	"strconv"
-	"strings"
-	"sync"
-
-	"github.com/astaxie/beego/session"
-	"github.com/siddontang/ledisdb/config"
-	"github.com/siddontang/ledisdb/ledis"
+  "net/http"
+  "strconv"
+  "strings"
+  "sync"
+
+  "github.com/astaxie/beego/session"
+  "github.com/siddontang/ledisdb/config"
+  "github.com/siddontang/ledisdb/ledis"
 )
 
 var ledispder = &LedisProvider{}
@@ -16,165 +16,165 @@ var c *ledis.DB
 
 // ledis session store
 type LedisSessionStore struct {
-	sid         string
-	lock        sync.RWMutex
-	values      map[interface{}]interface{}
-	maxlifetime int64
+  sid         string
+  lock        sync.RWMutex
+  values      map[interface{}]interface{}
+  maxlifetime int64
 }
 
 // set value in ledis session
 func (ls *LedisSessionStore) Set(key, value interface{}) error {
-	ls.lock.Lock()
-	defer ls.lock.Unlock()
-	ls.values[key] = value
-	return nil
+  ls.lock.Lock()
+  defer ls.lock.Unlock()
+  ls.values[key] = value
+  return nil
 }
 
 // get value in ledis session
 func (ls *LedisSessionStore) Get(key interface{}) interface{} {
-	ls.lock.RLock()
-	defer ls.lock.RUnlock()
-	if v, ok := ls.values[key]; ok {
-		return v
-	} else {
-		return nil
-	}
+  ls.lock.RLock()
+  defer ls.lock.RUnlock()
+  if v, ok := ls.values[key]; ok {
+    return v
+  } else {
+    return nil
+  }
 }
 
 // delete value in ledis session
 func (ls *LedisSessionStore) Delete(key interface{}) error {
-	ls.lock.Lock()
-	defer ls.lock.Unlock()
-	delete(ls.values, key)
-	return nil
+  ls.lock.Lock()
+  defer ls.lock.Unlock()
+  delete(ls.values, key)
+  return nil
 }
 
 // clear all values in ledis session
 func (ls *LedisSessionStore) Flush() error {
-	ls.lock.Lock()
-	defer ls.lock.Unlock()
-	ls.values = make(map[interface{}]interface{})
-	return nil
+  ls.lock.Lock()
+  defer ls.lock.Unlock()
+  ls.values = make(map[interface{}]interface{})
+  return nil
 }
 
 // get ledis session id
 func (ls *LedisSessionStore) SessionID() string {
-	return ls.sid
+  return ls.sid
 }
 
 // save session values to ledis
 func (ls *LedisSessionStore) SessionRelease(w http.ResponseWriter) {
-	b, err := session.EncodeGob(ls.values)
-	if err != nil {
-		return
-	}
-	c.Set([]byte(ls.sid), b)
-	c.Expire([]byte(ls.sid), ls.maxlifetime)
+  b, err := session.EncodeGob(ls.values)
+  if err != nil {
+    return
+  }
+  c.Set([]byte(ls.sid), b)
+  c.Expire([]byte(ls.sid), ls.maxlifetime)
 }
 
 // ledis session provider
 type LedisProvider struct {
-	maxlifetime int64
-	savePath    string
-	db          int
+  maxlifetime int64
+  savePath    string
+  db          int
 }
 
 // init ledis session
 // savepath like ledis server saveDataPath,pool size
 // e.g. 127.0.0.1:6379,100,astaxie
 func (lp *LedisProvider) SessionInit(maxlifetime int64, savePath string) error {
-	var err error
-	lp.maxlifetime = maxlifetime
-	configs := strings.Split(savepath, ",")
-	if len(configs) == 1 {
-		lp.savePath = configs[0]
-	} else if len(configs) == 2 {
-		lp.savePath = configs[0]
-		lp.db, err = strconv.Atoi(configs[1])
-		if err != nil {
-			return err
-		}
-	}
-	cfg := new(config.Config)
-	cfg.DataDir = lp.savePath
-	nowLedis, err := ledis.Open(cfg)
-	c, err = nowLedis.Select(lp.db)
-	if err != nil {
-		println(err)
-		return nil
-	}
-	return nil
+  var err error
+  lp.maxlifetime = maxlifetime
+  configs := strings.Split(savePath, ",")
+  if len(configs) == 1 {
+    lp.savePath = configs[0]
+  } else if len(configs) == 2 {
+    lp.savePath = configs[0]
+    lp.db, err = strconv.Atoi(configs[1])
+    if err != nil {
+      return err
+    }
+  }
+  cfg := new(config.Config)
+  cfg.DataDir = lp.savePath
+  nowLedis, err := ledis.Open(cfg)
+  c, err = nowLedis.Select(lp.db)
+  if err != nil {
+    println(err)
+    return nil
+  }
+  return nil
 }
 
 // read ledis session by sid
 func (lp *LedisProvider) SessionRead(sid string) (session.SessionStore, error) {
-	kvs, err := c.Get([]byte(sid))
-	var kv map[interface{}]interface{}
-	if len(kvs) == 0 {
-		kv = make(map[interface{}]interface{})
-	} else {
-		kv, err = session.DecodeGob(kvs)
-		if err != nil {
-			return nil, err
-		}
-	}
-	ls := &LedisSessionStore{sid: sid, values: kv, maxlifetime: lp.maxlifetime}
-	return ls, nil
+  kvs, err := c.Get([]byte(sid))
+  var kv map[interface{}]interface{}
+  if len(kvs) == 0 {
+    kv = make(map[interface{}]interface{})
+  } else {
+    kv, err = session.DecodeGob(kvs)
+    if err != nil {
+      return nil, err
+    }
+  }
+  ls := &LedisSessionStore{sid: sid, values: kv, maxlifetime: lp.maxlifetime}
+  return ls, nil
 }
 
 // check ledis session exist by sid
 func (lp *LedisProvider) SessionExist(sid string) bool {
-	count, _ := c.Exists([]byte(sid))
-	if count == 0 {
-		return false
-	} else {
-		return true
-	}
+  count, _ := c.Exists([]byte(sid))
+  if count == 0 {
+    return false
+  } else {
+    return true
+  }
 }
 
 // generate new sid for ledis session
 func (lp *LedisProvider) SessionRegenerate(oldsid, sid string) (session.SessionStore, error) {
-	count, _ := c.Exists([]byte(sid))
-	if count == 0 {
-		// oldsid doesn't exists, set the new sid directly
-		// ignore error here, since if it return error
-		// the existed value will be 0
-		c.Set([]byte(sid), []byte(""))
-		c.Expire([]byte(sid), lp.maxlifetime)
-	} else {
-		data, _ := c.Get([]byte(oldsid))
-		c.Set([]byte(sid), data)
-		c.Expire([]byte(sid), lp.maxlifetime)
-	}
-	kvs, err := c.Get([]byte(sid))
-	var kv map[interface{}]interface{}
-	if len(kvs) == 0 {
-		kv = make(map[interface{}]interface{})
-	} else {
-		kv, err = session.DecodeGob([]byte(kvs))
-		if err != nil {
-			return nil, err
-		}
-	}
-	ls := &LedisSessionStore{sid: sid, values: kv, maxlifetime: lp.maxlifetime}
-	return ls, nil
+  count, _ := c.Exists([]byte(sid))
+  if count == 0 {
+    // oldsid doesn't exists, set the new sid directly
+    // ignore error here, since if it return error
+    // the existed value will be 0
+    c.Set([]byte(sid), []byte(""))
+    c.Expire([]byte(sid), lp.maxlifetime)
+  } else {
+    data, _ := c.Get([]byte(oldsid))
+    c.Set([]byte(sid), data)
+    c.Expire([]byte(sid), lp.maxlifetime)
+  }
+  kvs, err := c.Get([]byte(sid))
+  var kv map[interface{}]interface{}
+  if len(kvs) == 0 {
+    kv = make(map[interface{}]interface{})
+  } else {
+    kv, err = session.DecodeGob([]byte(kvs))
+    if err != nil {
+      return nil, err
+    }
+  }
+  ls := &LedisSessionStore{sid: sid, values: kv, maxlifetime: lp.maxlifetime}
+  return ls, nil
 }
 
 // delete ledis session by id
 func (lp *LedisProvider) SessionDestroy(sid string) error {
-	c.Del([]byte(sid))
-	return nil
+  c.Del([]byte(sid))
+  return nil
 }
 
 // Impelment method, no used.
 func (lp *LedisProvider) SessionGC() {
-	return
+  return
 }
 
 // @todo
 func (lp *LedisProvider) SessionAll() int {
-	return 0
+  return 0
 }
 func init() {
-	session.Register("ledis", ledispder)
+  session.Register("ledis", ledispder)
 }