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sessions.go
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/
sessions.go
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package bhap
import (
"context"
"fmt"
"net/http"
cascadestore "github.com/dsoprea/goappenginesessioncascade"
"github.com/gorilla/sessions"
"google.golang.org/appengine/datastore"
)
var sessionStore *cascadestore.CascadeStore
func init() {
sessionStore = cascadestore.NewCascadeStore(
cascadestore.DistributedBackends, []byte("23c124b173d"))
}
func GetSession(r *http.Request) (*sessions.Session, error) {
return sessionStore.Get(r, "login")
}
// UserFromSession gets the currently logged in User based on session
// information. If no user is logged in, the returned key will be nil.
func UserFromSession(ctx context.Context, r *http.Request) (User, *datastore.Key, error) {
loginSession, err := sessionStore.Get(r, "login")
if err != nil {
return User{}, nil, fmt.Errorf("could not decode session: %v", err)
}
if loginSession.IsNew {
return User{}, nil, nil
}
email := loginSession.Values["email"].(string)
return UserByEmail(ctx, email)
}
// DeleteSession deletes the current session information.
func DeleteSession(w http.ResponseWriter, r *http.Request) error {
loginSession, err := sessionStore.Get(r, "login")
if err != nil {
return fmt.Errorf("could not decode session: %v", err)
}
loginSession.Options.MaxAge = -1
loginSession.Save(r, w)
return nil
}