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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_SYNC_FILE_SYSTEM_SYNC_FILE_SYSTEM_SERVICE_H_
#define CHROME_BROWSER_SYNC_FILE_SYSTEM_SYNC_FILE_SYSTEM_SERVICE_H_
#include <set>
#include <string>
#include "base/basictypes.h"
#include "base/callback_forward.h"
#include "base/memory/scoped_ptr.h"
#include "base/memory/singleton.h"
#include "base/memory/weak_ptr.h"
#include "base/observer_list.h"
#include "chrome/browser/profiles/profile_keyed_service.h"
#include "chrome/browser/profiles/profile_keyed_service_factory.h"
#include "chrome/browser/sync_file_system/local_file_sync_service.h"
#include "chrome/browser/sync_file_system/remote_file_sync_service.h"
#include "googleurl/src/gurl.h"
#include "webkit/fileapi/syncable/sync_callbacks.h"
namespace fileapi {
class FileSystemContext;
}
namespace sync_file_system {
class SyncEventObserver;
class SyncFileSystemService
: public ProfileKeyedService,
public LocalFileSyncService::Observer,
public RemoteFileSyncService::Observer,
public base::SupportsWeakPtr<SyncFileSystemService> {
public:
// ProfileKeyedService overrides.
virtual void Shutdown() OVERRIDE;
void InitializeForApp(
fileapi::FileSystemContext* file_system_context,
const std::string& service_name,
const GURL& app_origin,
const fileapi::SyncStatusCallback& callback);
// Returns a list (set) of files that are conflicting.
void GetConflictFiles(
const GURL& app_origin,
const std::string& service_name,
const fileapi::SyncFileSetCallback& callback);
// Returns metadata info for a conflicting file |url|.
void GetConflictFileInfo(
const GURL& app_origin,
const std::string& service_name,
const fileapi::FileSystemURL& url,
const fileapi::ConflictFileInfoCallback& callback);
// Returns the file |url|'s sync status.
void GetFileSyncStatus(
const fileapi::FileSystemURL& url,
const fileapi::SyncFileStatusCallback& callback);
void AddSyncEventObserver(SyncEventObserver* observer);
void RemoveSyncEventObserver(SyncEventObserver* observer);
// Enables or disables automatic synchronization process.
// If this is enabled the service automatically runs remote/local sync
// process when it detects changes in remote/local filesystem for
// registered origins.
// It is enabled by default but can be disabled for testing (or maybe
// via an explicit API call).
void set_auto_sync_enabled(bool flag) { auto_sync_enabled_ = flag; }
bool auto_sync_enabled() const { return auto_sync_enabled_; }
private:
friend class SyncFileSystemServiceFactory;
friend class SyncFileSystemServiceTest;
friend class scoped_ptr<SyncFileSystemService>;
explicit SyncFileSystemService(Profile* profile);
virtual ~SyncFileSystemService();
void Initialize(scoped_ptr<LocalFileSyncService> local_file_service,
scoped_ptr<RemoteFileSyncService> remote_file_service);
void DidGetConflictFileInfo(const fileapi::ConflictFileInfoCallback& callback,
const fileapi::FileSystemURL& url,
const fileapi::SyncFileMetadata* local_metadata,
const fileapi::SyncFileMetadata* remote_metadata,
fileapi::SyncStatusCode status);
// Callbacks for InitializeForApp.
void DidInitializeFileSystem(const GURL& app_origin,
const fileapi::SyncStatusCallback& callback,
fileapi::SyncStatusCode status);
void DidRegisterOrigin(const GURL& app_origin,
const fileapi::SyncStatusCallback& callback,
fileapi::SyncStatusCode status);
// Called when following observer methods are called:
// - OnLocalChangeAvailable()
// - OnRemoteChangeAvailable()
// - OnRemoteServiceStateUpdated()
void MaybeStartSync();
// Called from MaybeStartSync().
void MaybeStartRemoteSync();
void MaybeStartLocalSync();
// Callbacks for remote/local sync.
void DidProcessRemoteChange(fileapi::SyncStatusCode status,
const fileapi::FileSystemURL& url,
fileapi::SyncOperationResult result);
void DidProcessLocalChange(fileapi::SyncStatusCode status,
const fileapi::FileSystemURL& url);
void DidGetLocalChangeStatus(const fileapi::SyncFileStatusCallback& callback,
bool has_pending_local_changes);
void OnSyncEnabledForRemoteSync();
// RemoteFileSyncService::Observer overrides.
virtual void OnLocalChangeAvailable(int64 pending_changes) OVERRIDE;
// LocalFileSyncService::Observer overrides.
virtual void OnRemoteChangeQueueUpdated(int64 pending_changes) OVERRIDE;
virtual void OnRemoteServiceStateUpdated(
RemoteServiceState state,
const std::string& description) OVERRIDE;
Profile* profile_;
int64 pending_local_changes_;
int64 pending_remote_changes_;
scoped_ptr<LocalFileSyncService> local_file_service_;
scoped_ptr<RemoteFileSyncService> remote_file_service_;
bool local_sync_running_;
bool remote_sync_running_;
// If a remote sync is returned with SYNC_STATUS_FILE_BUSY we mark this
// true and register the busy file URL to wait for a sync enabled event
// for the URL. When this flag is set to true it won't be worth trying
// another remote sync.
bool is_waiting_remote_sync_enabled_;
bool auto_sync_enabled_;
std::set<GURL> initialized_app_origins_;
ObserverList<SyncEventObserver> observers_;
DISALLOW_COPY_AND_ASSIGN(SyncFileSystemService);
};
class SyncFileSystemServiceFactory : public ProfileKeyedServiceFactory {
public:
static SyncFileSystemService* GetForProfile(Profile* profile);
static SyncFileSystemService* FindForProfile(Profile* profile);
static SyncFileSystemServiceFactory* GetInstance();
// This overrides the remote service for testing.
// For testing this must be called before GetForProfile is called.
// Otherwise a new DriveFileSyncService is created for the new service.
// Since we use scoped_ptr it's one-off and the instance is passed
// to the newly created SyncFileSystemService.
void set_mock_remote_file_service(
scoped_ptr<RemoteFileSyncService> mock_remote_service);
private:
friend struct DefaultSingletonTraits<SyncFileSystemServiceFactory>;
SyncFileSystemServiceFactory();
virtual ~SyncFileSystemServiceFactory();
// ProfileKeyedServiceFactory overrides.
virtual ProfileKeyedService* BuildServiceInstanceFor(
Profile* profile) const OVERRIDE;
mutable scoped_ptr<RemoteFileSyncService> mock_remote_file_service_;
};
} // namespace sync_file_system
#endif // CHROME_BROWSER_SYNC_FILE_SYSTEM_SYNC_FILE_SYSTEM_SERVICE_H_
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