1 files changed, 119 insertions, 0 deletions
diff --git a/dom/serviceworkers/ServiceWorkerRegistrar.h b/dom/serviceworkers/ServiceWorkerRegistrar.h
new file mode 100644
index 0000000000..20c1cc530c
--- /dev/null
+++ b/dom/serviceworkers/ServiceWorkerRegistrar.h
@@ -0,0 +1,119 @@
+/* -*- 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_dom_ServiceWorkerRegistrar_h
+#define mozilla_dom_ServiceWorkerRegistrar_h
+
+#include "mozilla/Monitor.h"
+#include "mozilla/Telemetry.h"
+#include "nsClassHashtable.h"
+#include "nsIAsyncShutdown.h"
+#include "nsIObserver.h"
+#include "nsCOMPtr.h"
+#include "nsString.h"
+#include "nsTArray.h"
+
+#define SERVICEWORKERREGISTRAR_FILE u"serviceworker.txt"
+#define SERVICEWORKERREGISTRAR_VERSION "9"
+#define SERVICEWORKERREGISTRAR_TERMINATOR "#"
+#define SERVICEWORKERREGISTRAR_TRUE "true"
+#define SERVICEWORKERREGISTRAR_FALSE "false"
+
+class nsIFile;
+
+namespace mozilla {
+
+namespace ipc {
+class PrincipalInfo;
+}  // namespace ipc
+
+namespace dom {
+
+class ServiceWorkerRegistrationData;
+}
+}  // namespace mozilla
+
+namespace mozilla::dom {
+
+class ServiceWorkerRegistrar : public nsIObserver,
+                               public nsIAsyncShutdownBlocker {
+  friend class ServiceWorkerRegistrarSaveDataRunnable;
+
+ public:
+  NS_DECL_THREADSAFE_ISUPPORTS
+  NS_DECL_NSIOBSERVER
+  NS_DECL_NSIASYNCSHUTDOWNBLOCKER
+
+  static void Initialize();
+
+  void Shutdown();
+
+  void DataSaved(uint32_t aFileGeneration);
+
+  static already_AddRefed<ServiceWorkerRegistrar> Get();
+
+  void GetRegistrations(nsTArray<ServiceWorkerRegistrationData>& aValues);
+
+  void RegisterServiceWorker(const ServiceWorkerRegistrationData& aData);
+  void UnregisterServiceWorker(
+      const mozilla::ipc::PrincipalInfo& aPrincipalInfo,
+      const nsACString& aScope);
+  void RemoveAll();
+
+  bool ReloadDataForTest();
+
+ protected:
+  // These methods are protected because we test this class using gTest
+  // subclassing it.
+  void LoadData();
+  nsresult SaveData(const nsTArray<ServiceWorkerRegistrationData>& aData);
+
+  nsresult ReadData();
+  nsresult WriteData(const nsTArray<ServiceWorkerRegistrationData>& aData);
+  void DeleteData();
+
+  void RegisterServiceWorkerInternal(const ServiceWorkerRegistrationData& aData)
+      MOZ_REQUIRES(mMonitor);
+
+  ServiceWorkerRegistrar();
+  virtual ~ServiceWorkerRegistrar();
+
+ private:
+  void ProfileStarted();
+  void ProfileStopped();
+
+  void MaybeScheduleSaveData();
+  void ShutdownCompleted();
+  void MaybeScheduleShutdownCompleted();
+
+  uint32_t GetNextGeneration();
+  void MaybeResetGeneration();
+
+  nsCOMPtr<nsIAsyncShutdownClient> GetShutdownPhase() const;
+
+  bool IsSupportedVersion(const nsACString& aVersion) const;
+
+ protected:
+  mozilla::Monitor mMonitor;
+
+  // protected by mMonitor.
+  nsCOMPtr<nsIFile> mProfileDir MOZ_GUARDED_BY(mMonitor);
+  // Read on mainthread, modified on background thread EXCEPT for
+  // ReloadDataForTest() AND for gtest, which modifies this on MainThread.
+  nsTArray<ServiceWorkerRegistrationData> mData MOZ_GUARDED_BY(mMonitor);
+  bool mDataLoaded MOZ_GUARDED_BY(mMonitor);
+
+  // PBackground thread only
+  uint32_t mDataGeneration;
+  uint32_t mFileGeneration;
+  uint32_t mRetryCount;
+  bool mShuttingDown;
+  bool mSaveDataRunnableDispatched;
+};
+
+}  // namespace mozilla::dom
+
+#endif  // mozilla_dom_ServiceWorkerRegistrar_h