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sess_couchbase.go
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sess_couchbase.go
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// Copyright 2014 beego Author. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// package couchbase for session provider
//
// depend on github.com/couchbaselabs/go-couchbasee
//
// go install github.com/couchbaselabs/go-couchbase
//
// Usage:
// import(
// _ "github.com/astaxie/beego/session/couchbase"
// "github.com/astaxie/beego/session"
// )
//
// func init() {
// globalSessions, _ = session.NewManager("couchbase", ``{"cookieName":"gosessionid","gclifetime":3600,"ProviderConfig":"http://host:port/, Pool, Bucket"}``)
// go globalSessions.GC()
// }
//
// more docs: http://beego.me/docs/module/session.md
package session
import (
"net/http"
"strings"
"sync"
"github.com/couchbaselabs/go-couchbase"
"github.com/astaxie/beego/session"
)
var couchbpder = &CouchbaseProvider{}
type CouchbaseSessionStore struct {
b *couchbase.Bucket
sid string
lock sync.RWMutex
values map[interface{}]interface{}
maxlifetime int64
}
type CouchbaseProvider struct {
maxlifetime int64
savePath string
pool string
bucket string
b *couchbase.Bucket
}
func (cs *CouchbaseSessionStore) Set(key, value interface{}) error {
cs.lock.Lock()
defer cs.lock.Unlock()
cs.values[key] = value
return nil
}
func (cs *CouchbaseSessionStore) Get(key interface{}) interface{} {
cs.lock.RLock()
defer cs.lock.RUnlock()
if v, ok := cs.values[key]; ok {
return v
} else {
return nil
}
}
func (cs *CouchbaseSessionStore) Delete(key interface{}) error {
cs.lock.Lock()
defer cs.lock.Unlock()
delete(cs.values, key)
return nil
}
func (cs *CouchbaseSessionStore) Flush() error {
cs.lock.Lock()
defer cs.lock.Unlock()
cs.values = make(map[interface{}]interface{})
return nil
}
func (cs *CouchbaseSessionStore) SessionID() string {
return cs.sid
}
func (cs *CouchbaseSessionStore) SessionRelease(w http.ResponseWriter) {
defer cs.b.Close()
bo, err := session.EncodeGob(cs.values)
if err != nil {
return
}
cs.b.Set(cs.sid, int(cs.maxlifetime), bo)
}
func (cp *CouchbaseProvider) getBucket() *couchbase.Bucket {
c, err := couchbase.Connect(cp.savePath)
if err != nil {
return nil
}
pool, err := c.GetPool(cp.pool)
if err != nil {
return nil
}
bucket, err := pool.GetBucket(cp.bucket)
if err != nil {
return nil
}
return bucket
}
// init couchbase session
// savepath like couchbase server REST/JSON URL
// e.g. http://host:port/, Pool, Bucket
func (cp *CouchbaseProvider) SessionInit(maxlifetime int64, savePath string) error {
cp.maxlifetime = maxlifetime
configs := strings.Split(savePath, ",")
if len(configs) > 0 {
cp.savePath = configs[0]
}
if len(configs) > 1 {
cp.pool = configs[1]
}
if len(configs) > 2 {
cp.bucket = configs[2]
}
return nil
}
// read couchbase session by sid
func (cp *CouchbaseProvider) SessionRead(sid string) (session.SessionStore, error) {
cp.b = cp.getBucket()
var doc []byte
err := cp.b.Get(sid, &doc)
var kv map[interface{}]interface{}
if doc == nil {
kv = make(map[interface{}]interface{})
} else {
kv, err = session.DecodeGob(doc)
if err != nil {
return nil, err
}
}
cs := &CouchbaseSessionStore{b: cp.b, sid: sid, values: kv, maxlifetime: cp.maxlifetime}
return cs, nil
}
func (cp *CouchbaseProvider) SessionExist(sid string) bool {
cp.b = cp.getBucket()
defer cp.b.Close()
var doc []byte
if err := cp.b.Get(sid, &doc); err != nil || doc == nil {
return false
} else {
return true
}
}
func (cp *CouchbaseProvider) SessionRegenerate(oldsid, sid string) (session.SessionStore, error) {
cp.b = cp.getBucket()
var doc []byte
if err := cp.b.Get(oldsid, &doc); err != nil || doc == nil {
cp.b.Set(sid, int(cp.maxlifetime), "")
} else {
err := cp.b.Delete(oldsid)
if err != nil {
return nil, err
}
_, _ = cp.b.Add(sid, int(cp.maxlifetime), doc)
}
err := cp.b.Get(sid, &doc)
if err != nil {
return nil, err
}
var kv map[interface{}]interface{}
if doc == nil {
kv = make(map[interface{}]interface{})
} else {
kv, err = session.DecodeGob(doc)
if err != nil {
return nil, err
}
}
cs := &CouchbaseSessionStore{b: cp.b, sid: sid, values: kv, maxlifetime: cp.maxlifetime}
return cs, nil
}
func (cp *CouchbaseProvider) SessionDestroy(sid string) error {
cp.b = cp.getBucket()
defer cp.b.Close()
cp.b.Delete(sid)
return nil
}
func (cp *CouchbaseProvider) SessionGC() {
return
}
func (cp *CouchbaseProvider) SessionAll() int {
return 0
}
func init() {
session.Register("couchbase", couchbpder)
}