feat: Add GoRM session store (#131)

Author: Tommy McNeely

.gitignore

@@ -1,3 +1,4 @@
 coverage.out
 vendor/*
 !/vendor/vendor.json
+/gorm/test.db

README.md

@@ -13,6 +13,7 @@ Gin middleware for session management with multi-backend support:
 - [Redis](#redis)
 - [memcached](#memcached)
 - [MongoDB](#mongodb)
+- [GoRM](#gorm)
 - [memstore](#memstore)
 - [PostgreSQL](#postgresql)
 
@@ -322,6 +323,48 @@ func main() {
 }
 ```
 
+### GoRM
+
+[embedmd]:# (_example/gorm/main.go go)
+```go
+package main
+
+import (
+	"github.com/gin-contrib/sessions"
+	gormsessions "github.com/gin-contrib/sessions/gorm"
+	"github.com/gin-gonic/gin"
+	"gorm.io/driver/sqlite"
+	"gorm.io/gorm"
+)
+
+func main() {
+	db, err := gorm.Open(sqlite.Open("test.db"), &gorm.Config{})
+	if err != nil {
+		panic(err)
+	}
+	store := gormsessions.NewStore(db, true, []byte("secret"))
+
+	r := gin.Default()
+	r.Use(sessions.Sessions("mysession", store))
+
+	r.GET("/incr", func(c *gin.Context) {
+		session := sessions.Default(c)
+		var count int
+		v := session.Get("count")
+		if v == nil {
+			count = 0
+		} else {
+			count = v.(int)
+			count++
+		}
+		session.Set("count", count)
+		session.Save()
+		c.JSON(200, gin.H{"count": count})
+	})
+	r.Run(":8000")
+}
+```
+
 ### PostgreSQL
 
 ```go

_example/gorm/main.go

@@ -0,0 +1,36 @@
+package main
+
+import (
+	"github.com/gin-contrib/sessions"
+	gormsessions "github.com/gin-contrib/sessions/gorm"
+	"github.com/gin-gonic/gin"
+	"gorm.io/driver/sqlite"
+	"gorm.io/gorm"
+)
+
+func main() {
+	db, err := gorm.Open(sqlite.Open("test.db"), &gorm.Config{})
+	if err != nil {
+		panic(err)
+	}
+	store := gormsessions.NewStore(db, true, []byte("secret"))
+
+	r := gin.Default()
+	r.Use(sessions.Sessions("mysession", store))
+
+	r.GET("/incr", func(c *gin.Context) {
+		session := sessions.Default(c)
+		var count int
+		v := session.Get("count")
+		if v == nil {
+			count = 0
+		} else {
+			count = v.(int)
+			count++
+		}
+		session.Set("count", count)
+		session.Save()
+		c.JSON(200, gin.H{"count": count})
+	})
+	r.Run(":8000")
+}

go.mod

@@ -11,11 +11,12 @@ require (
 	github.com/globalsign/mgo v0.0.0-20181015135952-eeefdecb41b8
 	github.com/gomodule/redigo v2.0.0+incompatible
 	github.com/gorilla/context v1.1.1
-	github.com/gorilla/sessions v1.2.0
+	github.com/gorilla/sessions v1.2.1
 	github.com/kidstuff/mongostore v0.0.0-20181113001930-e650cd85ee4b
 	github.com/lib/pq v1.10.3 // indirect
 	github.com/memcachier/mc v2.0.1+incompatible
-	github.com/pkg/errors v0.9.1 // indirect
 	github.com/quasoft/memstore v0.0.0-20191010062613-2bce066d2b0b
-	github.com/stretchr/testify v1.7.0 // indirect
+	github.com/wader/gormstore/v2 v2.0.0
+	gorm.io/driver/sqlite v1.1.4
+	gorm.io/gorm v1.20.12
 )

go.sum

@@ -0,0 +1,30 @@
+package gorm
+
+import (
+	"time"
+
+	"github.com/gin-contrib/sessions"
+	"github.com/wader/gormstore/v2"
+	"gorm.io/gorm"
+)
+
+type Store interface {
+	sessions.Store
+}
+
+func NewStore(d *gorm.DB, expiredSessionCleanup bool, keyPairs ...[]byte) Store {
+	s := gormstore.New(d, keyPairs...)
+	if expiredSessionCleanup {
+		quit := make(chan struct{})
+		go s.PeriodicCleanup(1*time.Hour, quit)
+	}
+	return &store{s}
+}
+
+type store struct {
+	*gormstore.Store
+}
+
+func (s *store) Options(options sessions.Options) {
+	s.Store.SessionOpts = options.ToGorillaOptions()
+}

gorm/gorm.go

@@ -0,0 +1,44 @@
+// +build go1.13
+
+package gorm
+
+import (
+	"testing"
+
+	"github.com/gin-contrib/sessions"
+	"github.com/gin-contrib/sessions/tester"
+	"gorm.io/driver/sqlite"
+	"gorm.io/gorm"
+)
+
+var newStore = func(_ *testing.T) sessions.Store {
+	db, err := gorm.Open(sqlite.Open("test.db"), &gorm.Config{})
+	if err != nil {
+		panic(err)
+	}
+	return NewStore(db, true, []byte("secret"))
+}
+
+func TestGorm_SessionGetSet(t *testing.T) {
+	tester.GetSet(t, newStore)
+}
+
+func TestGorm_SessionDeleteKey(t *testing.T) {
+	tester.DeleteKey(t, newStore)
+}
+
+func TestGorm_SessionFlashes(t *testing.T) {
+	tester.Flashes(t, newStore)
+}
+
+func TestGorm_SessionClear(t *testing.T) {
+	tester.Clear(t, newStore)
+}
+
+func TestGorm_SessionOptions(t *testing.T) {
+	tester.Options(t, newStore)
+}
+
+func TestGorm_SessionMany(t *testing.T) {
+	tester.Many(t, newStore)
+}