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106 lines
3.0 KiB
Markdown
106 lines
3.0 KiB
Markdown
session
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==============
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session is a Go session manager. It can use many session providers. Just like the `database/sql` and `database/sql/driver`.
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## How to install?
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go get github.com/astaxie/beego/session
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## What providers are supported?
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As of now this session manager support memory, file, Redis and MySQL.
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## How to use it?
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First you must import it
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import (
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"github.com/astaxie/beego/session"
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)
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Then in you web app init the global session manager
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var globalSessions *session.Manager
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* Use **memory** as provider:
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func init() {
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globalSessions, _ = session.NewManager("memory", "gosessionid", 3600,"")
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go globalSessions.GC()
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}
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* Use **file** as provider, the last param is the path where you want file to be stored:
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func init() {
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globalSessions, _ = session.NewManager("file", "gosessionid", 3600, "./tmp")
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go globalSessions.GC()
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}
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* Use **Redis** as provider, the last param is the Redis conn address,poolsize,password:
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func init() {
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globalSessions, _ = session.NewManager("redis", "gosessionid", 3600, "127.0.0.1:6379,100,astaxie")
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go globalSessions.GC()
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}
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* Use **MySQL** as provider, the last param is the DSN, learn more from [mysql](https://github.com/go-sql-driver/mysql#dsn-data-source-name):
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func init() {
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globalSessions, _ = session.NewManager(
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"mysql", "gosessionid", 3600, "username:password@protocol(address)/dbname?param=value")
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go globalSessions.GC()
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}
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Finally in the handlerfunc you can use it like this
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func login(w http.ResponseWriter, r *http.Request) {
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sess := globalSessions.SessionStart(w, r)
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defer sess.SessionRelease()
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username := sess.Get("username")
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fmt.Println(username)
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if r.Method == "GET" {
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t, _ := template.ParseFiles("login.gtpl")
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t.Execute(w, nil)
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} else {
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fmt.Println("username:", r.Form["username"])
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sess.Set("username", r.Form["username"])
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fmt.Println("password:", r.Form["password"])
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}
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}
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## How to write own provider?
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When you develop a web app, maybe you want to write own provider because you must meet the requirements.
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Writing a provider is easy. You only need to define two struct types
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(Session and Provider), which satisfy the interface definition.
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Maybe you will find the **memory** provider as good example.
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type SessionStore interface {
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Set(key, value interface{}) error //set session value
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Get(key interface{}) interface{} //get session value
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Delete(key interface{}) error //delete session value
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SessionID() string //back current sessionID
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SessionRelease() // release the resource & save data to provider
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Flush() error //delete all data
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}
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type Provider interface {
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SessionInit(maxlifetime int64, savePath string) error
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SessionRead(sid string) (SessionStore, error)
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SessionExist(sid string) bool
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SessionRegenerate(oldsid, sid string) (SessionStore, error)
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SessionDestroy(sid string) error
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SessionAll() int //get all active session
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SessionGC()
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}
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## LICENSE
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BSD License http://creativecommons.org/licenses/BSD/
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