Merge pull request #4173 from AllenX2018/fix-bug-queryRow

Fix issue 3866

pkg/infrastructure/session/couchbase/sess_couchbase.go

@@ -0,0 +1,247 @@
+// 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 couchbase
+
+import (
+	"net/http"
+	"strings"
+	"sync"
+
+	couchbase "github.com/couchbase/go-couchbase"
+
+	"github.com/astaxie/beego/pkg/infrastructure/session"
+)
+
+var couchbpder = &Provider{}
+
+// SessionStore store each session
+type SessionStore struct {
+	b           *couchbase.Bucket
+	sid         string
+	lock        sync.RWMutex
+	values      map[interface{}]interface{}
+	maxlifetime int64
+}
+
+// Provider couchabse provided
+type Provider struct {
+	maxlifetime int64
+	savePath    string
+	pool        string
+	bucket      string
+	b           *couchbase.Bucket
+}
+
+// Set value to couchabse session
+func (cs *SessionStore) Set(key, value interface{}) error {
+	cs.lock.Lock()
+	defer cs.lock.Unlock()
+	cs.values[key] = value
+	return nil
+}
+
+// Get value from couchabse session
+func (cs *SessionStore) Get(key interface{}) interface{} {
+	cs.lock.RLock()
+	defer cs.lock.RUnlock()
+	if v, ok := cs.values[key]; ok {
+		return v
+	}
+	return nil
+}
+
+// Delete value in couchbase session by given key
+func (cs *SessionStore) Delete(key interface{}) error {
+	cs.lock.Lock()
+	defer cs.lock.Unlock()
+	delete(cs.values, key)
+	return nil
+}
+
+// Flush Clean all values in couchbase session
+func (cs *SessionStore) Flush() error {
+	cs.lock.Lock()
+	defer cs.lock.Unlock()
+	cs.values = make(map[interface{}]interface{})
+	return nil
+}
+
+// SessionID Get couchbase session store id
+func (cs *SessionStore) SessionID() string {
+	return cs.sid
+}
+
+// SessionRelease Write couchbase session with Gob string
+func (cs *SessionStore) 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 *Provider) 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
+}
+
+// SessionInit init couchbase session
+// savepath like couchbase server REST/JSON URL
+// e.g. http://host:port/, Pool, Bucket
+func (cp *Provider) 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
+}
+
+// SessionRead read couchbase session by sid
+func (cp *Provider) SessionRead(sid string) (session.Store, error) {
+	cp.b = cp.getBucket()
+
+	var (
+		kv  map[interface{}]interface{}
+		err error
+		doc []byte
+	)
+
+	err = cp.b.Get(sid, &doc)
+	if err != nil {
+		return nil, err
+	} else if doc == nil {
+		kv = make(map[interface{}]interface{})
+	} else {
+		kv, err = session.DecodeGob(doc)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	cs := &SessionStore{b: cp.b, sid: sid, values: kv, maxlifetime: cp.maxlifetime}
+	return cs, nil
+}
+
+// SessionExist Check couchbase session exist.
+// it checkes sid exist or not.
+func (cp *Provider) SessionExist(sid string) (bool, error) {
+	cp.b = cp.getBucket()
+	defer cp.b.Close()
+
+	var doc []byte
+
+	if err := cp.b.Get(sid, &doc); err != nil || doc == nil {
+		return false, err
+	}
+	return true, nil
+}
+
+// SessionRegenerate remove oldsid and use sid to generate new session
+func (cp *Provider) SessionRegenerate(oldsid, sid string) (session.Store, 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 := &SessionStore{b: cp.b, sid: sid, values: kv, maxlifetime: cp.maxlifetime}
+	return cs, nil
+}
+
+// SessionDestroy Remove bucket in this couchbase
+func (cp *Provider) SessionDestroy(sid string) error {
+	cp.b = cp.getBucket()
+	defer cp.b.Close()
+
+	cp.b.Delete(sid)
+	return nil
+}
+
+// SessionGC Recycle
+func (cp *Provider) SessionGC() {
+}
+
+// SessionAll return all active session
+func (cp *Provider) SessionAll() int {
+	return 0
+}
+
+func init() {
+	session.Register("couchbase", couchbpder)
+}