mirror of
https://github.com/astaxie/beego.git
synced 2024-12-23 03:10:50 +00:00
Merge pull request #551 from steamonimo/develop
session provider for postgresql
This commit is contained in:
commit
c7f16b5d5a
227
session/sess_postgresql.go
Normal file
227
session/sess_postgresql.go
Normal file
@ -0,0 +1,227 @@
|
||||
package session
|
||||
|
||||
/*
|
||||
|
||||
beego session provider for postgresql
|
||||
-------------------------------------
|
||||
|
||||
depends on github.com/lib/pq:
|
||||
|
||||
go install github.com/lib/pq
|
||||
|
||||
|
||||
needs this table in your database:
|
||||
|
||||
CREATE TABLE session (
|
||||
session_key char(64) NOT NULL,
|
||||
session_data bytea,
|
||||
session_expiry timestamp NOT NULL,
|
||||
CONSTRAINT session_key PRIMARY KEY(session_key)
|
||||
);
|
||||
|
||||
|
||||
will be activated with these settings in app.conf:
|
||||
|
||||
SessionOn = true
|
||||
SessionProvider = postgresql
|
||||
SessionSavePath = "user=a password=b dbname=c sslmode=disable"
|
||||
SessionName = session
|
||||
|
||||
*/
|
||||
|
||||
import (
|
||||
"database/sql"
|
||||
"net/http"
|
||||
"sync"
|
||||
"time"
|
||||
_ "github.com/lib/pq"
|
||||
)
|
||||
|
||||
var postgresqlpder = &PostgresqlProvider{}
|
||||
|
||||
// postgresql session store
|
||||
type PostgresqlSessionStore struct {
|
||||
c *sql.DB
|
||||
sid string
|
||||
lock sync.RWMutex
|
||||
values map[interface{}]interface{}
|
||||
}
|
||||
|
||||
// set value in postgresql session.
|
||||
// it is temp value in map.
|
||||
func (st *PostgresqlSessionStore) Set(key, value interface{}) error {
|
||||
st.lock.Lock()
|
||||
defer st.lock.Unlock()
|
||||
st.values[key] = value
|
||||
return nil
|
||||
}
|
||||
|
||||
// get value from postgresql session
|
||||
func (st *PostgresqlSessionStore) Get(key interface{}) interface{} {
|
||||
st.lock.RLock()
|
||||
defer st.lock.RUnlock()
|
||||
if v, ok := st.values[key]; ok {
|
||||
return v
|
||||
} else {
|
||||
return nil
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// delete value in postgresql session
|
||||
func (st *PostgresqlSessionStore) Delete(key interface{}) error {
|
||||
st.lock.Lock()
|
||||
defer st.lock.Unlock()
|
||||
delete(st.values, key)
|
||||
return nil
|
||||
}
|
||||
|
||||
// clear all values in postgresql session
|
||||
func (st *PostgresqlSessionStore) Flush() error {
|
||||
st.lock.Lock()
|
||||
defer st.lock.Unlock()
|
||||
st.values = make(map[interface{}]interface{})
|
||||
return nil
|
||||
}
|
||||
|
||||
// get session id of this postgresql session store
|
||||
func (st *PostgresqlSessionStore) SessionID() string {
|
||||
return st.sid
|
||||
}
|
||||
|
||||
// save postgresql session values to database.
|
||||
// must call this method to save values to database.
|
||||
func (st *PostgresqlSessionStore) SessionRelease(w http.ResponseWriter) {
|
||||
defer st.c.Close()
|
||||
b, err := encodeGob(st.values)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
st.c.Exec("UPDATE session set session_data=$1, session_expiry=$2 where session_key=$3",
|
||||
b, time.Now().Format(time.RFC3339), st.sid)
|
||||
|
||||
}
|
||||
|
||||
// postgresql session provider
|
||||
type PostgresqlProvider struct {
|
||||
maxlifetime int64
|
||||
savePath string
|
||||
}
|
||||
|
||||
// connect to postgresql
|
||||
func (mp *PostgresqlProvider) connectInit() *sql.DB {
|
||||
db, e := sql.Open("postgres", mp.savePath)
|
||||
if e != nil {
|
||||
return nil
|
||||
}
|
||||
return db
|
||||
}
|
||||
|
||||
// init postgresql session.
|
||||
// savepath is the connection string of postgresql.
|
||||
func (mp *PostgresqlProvider) SessionInit(maxlifetime int64, savePath string) error {
|
||||
mp.maxlifetime = maxlifetime
|
||||
mp.savePath = savePath
|
||||
return nil
|
||||
}
|
||||
|
||||
// get postgresql session by sid
|
||||
func (mp *PostgresqlProvider) SessionRead(sid string) (SessionStore, error) {
|
||||
c := mp.connectInit()
|
||||
row := c.QueryRow("select session_data from session where session_key=$1", sid)
|
||||
var sessiondata []byte
|
||||
err := row.Scan(&sessiondata)
|
||||
if err == sql.ErrNoRows {
|
||||
_, err = c.Exec("insert into session(session_key,session_data,session_expiry) values($1,$2,$3)",
|
||||
sid, "", time.Now().Format(time.RFC3339))
|
||||
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
} else if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
var kv map[interface{}]interface{}
|
||||
if len(sessiondata) == 0 {
|
||||
kv = make(map[interface{}]interface{})
|
||||
} else {
|
||||
kv, err = decodeGob(sessiondata)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
rs := &PostgresqlSessionStore{c: c, sid: sid, values: kv}
|
||||
return rs, nil
|
||||
}
|
||||
|
||||
// check postgresql session exist
|
||||
func (mp *PostgresqlProvider) SessionExist(sid string) bool {
|
||||
c := mp.connectInit()
|
||||
defer c.Close()
|
||||
row := c.QueryRow("select session_data from session where session_key=$1", sid)
|
||||
var sessiondata []byte
|
||||
err := row.Scan(&sessiondata)
|
||||
|
||||
if err == sql.ErrNoRows {
|
||||
return false
|
||||
} else {
|
||||
return true
|
||||
}
|
||||
}
|
||||
|
||||
// generate new sid for postgresql session
|
||||
func (mp *PostgresqlProvider) SessionRegenerate(oldsid, sid string) (SessionStore, error) {
|
||||
c := mp.connectInit()
|
||||
row := c.QueryRow("select session_data from session where session_key=$1", oldsid)
|
||||
var sessiondata []byte
|
||||
err := row.Scan(&sessiondata)
|
||||
if err == sql.ErrNoRows {
|
||||
c.Exec("insert into session(session_key,session_data,session_expiry) values($1,$2,$3)",
|
||||
oldsid, "", time.Now().Format(time.RFC3339))
|
||||
}
|
||||
c.Exec("update session set session_key=$1 where session_key=$2", sid, oldsid)
|
||||
var kv map[interface{}]interface{}
|
||||
if len(sessiondata) == 0 {
|
||||
kv = make(map[interface{}]interface{})
|
||||
} else {
|
||||
kv, err = decodeGob(sessiondata)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
rs := &PostgresqlSessionStore{c: c, sid: sid, values: kv}
|
||||
return rs, nil
|
||||
}
|
||||
|
||||
// delete postgresql session by sid
|
||||
func (mp *PostgresqlProvider) SessionDestroy(sid string) error {
|
||||
c := mp.connectInit()
|
||||
c.Exec("DELETE FROM session where session_key=$1", sid)
|
||||
c.Close()
|
||||
return nil
|
||||
}
|
||||
|
||||
// delete expired values in postgresql session
|
||||
func (mp *PostgresqlProvider) SessionGC() {
|
||||
c := mp.connectInit()
|
||||
c.Exec("DELETE from session where EXTRACT(EPOCH FROM (current_timestamp - session_expiry)) > $1", mp.maxlifetime)
|
||||
c.Close()
|
||||
return
|
||||
}
|
||||
|
||||
// count values in postgresql session
|
||||
func (mp *PostgresqlProvider) SessionAll() int {
|
||||
c := mp.connectInit()
|
||||
defer c.Close()
|
||||
var total int
|
||||
err := c.QueryRow("SELECT count(*) as num from session").Scan(&total)
|
||||
if err != nil {
|
||||
return 0
|
||||
}
|
||||
return total
|
||||
}
|
||||
|
||||
func init() {
|
||||
Register("postgresql", postgresqlpder)
|
||||
}
|
Loading…
Reference in New Issue
Block a user