Chore: use remote cache instead of session storage (#16114)

Replaces session storage in auth_proxy middleware with remote cache

Fixes #15161

pkg/infra/remotecache/remotecache.go

@@ -7,12 +7,10 @@ import (
 	"errors"
 	"time"
 
-	"github.com/grafana/grafana/pkg/setting"
-
 	"github.com/grafana/grafana/pkg/log"
-	"github.com/grafana/grafana/pkg/services/sqlstore"
-
 	"github.com/grafana/grafana/pkg/registry"
+	"github.com/grafana/grafana/pkg/services/sqlstore"
+	"github.com/grafana/grafana/pkg/setting"
 )
 
 var (

pkg/infra/remotecache/remotecache_test.go

@@ -5,7 +5,6 @@ import (
 	"time"
 
 	"github.com/bmizerany/assert"
-
 	"github.com/grafana/grafana/pkg/services/sqlstore"
 	"github.com/grafana/grafana/pkg/setting"
 )

pkg/infra/remotecache/testing.go

@@ -0,0 +1,34 @@
+package remotecache
+
+import (
+	"testing"
+
+	"github.com/grafana/grafana/pkg/services/sqlstore"
+	"github.com/grafana/grafana/pkg/setting"
+)
+
+// NewFakeStore creates store for testing
+func NewFakeStore(t *testing.T) *RemoteCache {
+	t.Helper()
+
+	opts := &setting.RemoteCacheOptions{
+		Name:    "database",
+		ConnStr: "",
+	}
+
+	SQLStore := sqlstore.InitTestDB(t)
+
+	dc := &RemoteCache{
+		SQLStore: SQLStore,
+		Cfg: &setting.Cfg{
+			RemoteCacheOptions: opts,
+		},
+	}
+
+	err := dc.Init()
+	if err != nil {
+		t.Fatalf("failed to init remote cache for test. error: %v", err)
+	}
+
+	return dc
+}