1 files changed, 51 insertions, 0 deletions
diff --git a/toolkit/components/nimbus/lib/NimbusFeatures.h b/toolkit/components/nimbus/lib/NimbusFeatures.h
new file mode 100644
index 0000000000..7fe9ac8b5c
--- /dev/null
+++ b/toolkit/components/nimbus/lib/NimbusFeatures.h
@@ -0,0 +1,51 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_NimbusFeatures_h
+#define mozilla_NimbusFeatures_h
+
+#include "mozilla/Preferences.h"
+#include "nsTHashSet.h"
+
+namespace mozilla {
+
+class NimbusFeatures {
+ private:
+  // This branch is used to store experiment data
+  static constexpr auto kSyncDataPrefBranch = "nimbus.syncdatastore."_ns;
+  // This branch is used to store rollouts data
+  static constexpr auto kSyncRolloutsPrefBranch =
+      "nimbus.syncdefaultsstore."_ns;
+  static void GetPrefName(const nsACString& branchPrefix,
+                          const nsACString& aFeatureId,
+                          const nsACString& aVariable, nsACString& aPref);
+
+  static nsresult GetExperimentSlug(const nsACString& aFeatureId,
+                                    nsACString& aExperimentSlug,
+                                    nsACString& aBranchSlug);
+
+ public:
+  static bool GetBool(const nsACString& aFeatureId, const nsACString& aVariable,
+                      bool aDefault);
+
+  static int GetInt(const nsACString& aFeatureId, const nsACString& aVariable,
+                    int aDefault);
+
+  static nsresult OnUpdate(const nsACString& aFeatureId,
+                           const nsACString& aVariable,
+                           PrefChangedFunc aUserCallback, void* aUserData);
+
+  static nsresult OffUpdate(const nsACString& aFeatureId,
+                            const nsACString& aVariable,
+                            PrefChangedFunc aUserCallback, void* aUserData);
+
+  static nsresult RecordExposureEvent(const nsACString& aFeatureId,
+                                      const bool aOnce = false);
+};
+
+}  // namespace mozilla
+
+#endif