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5.2 KiB
5.2 KiB
sessions
gorilla/sessions provides cookie and filesystem sessions and infrastructure for custom session backends.
The key features are:
- Simple API: use it as an easy way to set signed (and optionally encrypted) cookies.
- Built-in backends to store sessions in cookies or the filesystem.
- Flash messages: session values that last until read.
- Convenient way to switch session persistency (aka "remember me") and set other attributes.
- Mechanism to rotate authentication and encryption keys.
- Multiple sessions per request, even using different backends.
- Interfaces and infrastructure for custom session backends: sessions from different stores can be retrieved and batch-saved using a common API.
Let's start with an example that shows the sessions API in a nutshell:
import (
"net/http"
"github.com/gorilla/sessions"
)
// Note: Don't store your key in your source code. Pass it via an
// environmental variable, or flag (or both), and don't accidentally commit it
// alongside your code. Ensure your key is sufficiently random - i.e. use Go's
// crypto/rand or securecookie.GenerateRandomKey(32) and persist the result.
var store = sessions.NewCookieStore([]byte(os.Getenv("SESSION_KEY")))
func MyHandler(w http.ResponseWriter, r *http.Request) {
// Get a session. We're ignoring the error resulted from decoding an
// existing session: Get() always returns a session, even if empty.
session, _ := store.Get(r, "session-name")
// Set some session values.
session.Values["foo"] = "bar"
session.Values[42] = 43
// Save it before we write to the response/return from the handler.
err := session.Save(r, w)
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
}
First we initialize a session store calling NewCookieStore()
and passing a
secret key used to authenticate the session. Inside the handler, we call
store.Get()
to retrieve an existing session or create a new one. Then we set
some session values in session.Values, which is a map[interface{}]interface{}
.
And finally we call session.Save()
to save the session in the response.
More examples are available on the Gorilla website.
Store Implementations
Other implementations of the sessions.Store
interface:
- github.com/starJammer/gorilla-sessions-arangodb - ArangoDB
- github.com/yosssi/boltstore - Bolt
- github.com/srinathgs/couchbasestore - Couchbase
- github.com/denizeren/dynamostore - Dynamodb on AWS
- github.com/savaki/dynastore - DynamoDB on AWS (Official AWS library)
- github.com/bradleypeabody/gorilla-sessions-memcache - Memcache
- github.com/dsoprea/go-appengine-sessioncascade - Memcache/Datastore/Context in AppEngine
- github.com/kidstuff/mongostore - MongoDB
- github.com/srinathgs/mysqlstore - MySQL
- github.com/EnumApps/clustersqlstore - MySQL Cluster
- github.com/antonlindstrom/pgstore - PostgreSQL
- github.com/boj/redistore - Redis
- github.com/rbcervilla/redisstore - Redis (Single, Sentinel, Cluster)
- github.com/boj/rethinkstore - RethinkDB
- github.com/boj/riakstore - Riak
- github.com/michaeljs1990/sqlitestore - SQLite
- github.com/wader/gormstore - GORM (MySQL, PostgreSQL, SQLite)
- github.com/gernest/qlstore - ql
- github.com/quasoft/memstore - In-memory implementation for use in unit tests
- github.com/lafriks/xormstore - XORM (MySQL, PostgreSQL, SQLite, Microsoft SQL Server, TiDB)
- github.com/GoogleCloudPlatform/firestore-gorilla-sessions - Cloud Firestore
- github.com/stephenafamo/crdbstore - CockroachDB
- github.com/ryicoh/tikvstore - TiKV
License
BSD licensed. See the LICENSE file for details.