| // Copyright 2014 The Chromium Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CHROME_BROWSER_EXTENSIONS_EXTENSION_GARBAGE_COLLECTOR_H_ |
| #define CHROME_BROWSER_EXTENSIONS_EXTENSION_GARBAGE_COLLECTOR_H_ |
| |
| #include <map> |
| #include <string> |
| |
| #include "base/files/file_path.h" |
| #include "base/memory/raw_ptr.h" |
| #include "base/memory/weak_ptr.h" |
| #include "chrome/browser/extensions/install_observer.h" |
| #include "components/keyed_service/core/keyed_service.h" |
| |
| namespace content { |
| class BrowserContext; |
| } |
| |
| namespace extensions { |
| |
| // The class responsible for cleaning up the cruft left behind on the file |
| // system by uninstalled (or failed install) extensions. |
| // The class is owned by ExtensionService, but is mostly independent. Tasks to |
| // garbage collect extensions and isolated storage are posted once the |
| // ExtensionSystem signals ready. |
| class ExtensionGarbageCollector : public KeyedService, public InstallObserver { |
| public: |
| explicit ExtensionGarbageCollector(content::BrowserContext* context); |
| |
| ExtensionGarbageCollector(const ExtensionGarbageCollector&) = delete; |
| ExtensionGarbageCollector& operator=(const ExtensionGarbageCollector&) = |
| delete; |
| |
| ~ExtensionGarbageCollector() override; |
| |
| static ExtensionGarbageCollector* Get(content::BrowserContext* context); |
| |
| // Manually trigger GarbageCollectExtensions() for testing. |
| void GarbageCollectExtensionsForTest(); |
| |
| // KeyedService: |
| void Shutdown() override; |
| |
| // InstallObserver: |
| void OnBeginCrxInstall(content::BrowserContext* context, |
| const CrxInstaller& installer, |
| const std::string& extension_id) override; |
| void OnFinishCrxInstall(content::BrowserContext* context, |
| const CrxInstaller& installer, |
| const std::string& extension_id, |
| bool success) override; |
| |
| protected: |
| // Cleans up the extension install directory. It can end up with garbage in it |
| // if extensions can't initially be removed when they are uninstalled (eg if a |
| // file is in use). |
| // Obsolete version directories are removed, as are directories that aren't |
| // found in the ExtensionPrefs. |
| // The "Temp" directory that is used during extension installation will get |
| // removed iff there are no pending installations. |
| virtual void GarbageCollectExtensions(); |
| |
| static void GarbageCollectExtensionsOnFileThread( |
| const base::FilePath& install_directory, |
| const std::multimap<std::string, base::FilePath>& extension_paths, |
| bool unpacked); |
| |
| // The BrowserContext associated with the GarbageCollector. |
| raw_ptr<content::BrowserContext> context_; |
| |
| // The number of currently ongoing CRX installations. This is used to prevent |
| // garbage collection from running while a CRX is being installed. |
| int crx_installs_in_progress_; |
| |
| // Generate weak pointers for safely posting to the file thread for garbage |
| // collection. |
| base::WeakPtrFactory<ExtensionGarbageCollector> weak_factory_{this}; |
| }; |
| |
| } // namespace extensions |
| |
| #endif // CHROME_BROWSER_EXTENSIONS_EXTENSION_GARBAGE_COLLECTOR_H_ |