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// Copyright (c) 2011 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 WEBKIT_APPCACHE_APPCACHE_QUOTA_CLIENT_H_
#define WEBKIT_APPCACHE_APPCACHE_QUOTA_CLIENT_H_
#include <deque>
#include <map>
#include <string>
#include "base/gtest_prod_util.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "net/base/completion_callback.h"
#include "webkit/appcache/appcache_storage.h"
#include "webkit/quota/quota_client.h"
#include "webkit/quota/quota_task.h"
#include "webkit/quota/quota_types.h"
namespace appcache {
class AppCacheService;
class AppCacheStorageImpl;
class AppCacheQuotaClientTest;
// A QuotaClient implementation to integrate the appcache service
// with the quota management system. The QuotaClient interface is
// used on the IO thread by the quota manager. This class deletes
// itself when both the quota manager and the appcache service have
// been destroyed.
class AppCacheQuotaClient : public quota::QuotaClient {
public:
virtual ~AppCacheQuotaClient();
// QuotaClient method overrides
virtual ID id() const OVERRIDE;
virtual void OnQuotaManagerDestroyed();
virtual void GetOriginUsage(const GURL& origin,
quota::StorageType type,
GetUsageCallback* callback) OVERRIDE;
virtual void GetOriginsForType(quota::StorageType type,
GetOriginsCallback* callback) OVERRIDE;
virtual void GetOriginsForHost(quota::StorageType type,
const std::string& host,
GetOriginsCallback* callback) OVERRIDE;
virtual void DeleteOriginData(const GURL& origin,
quota::StorageType type,
DeletionCallback* callback) OVERRIDE;
private:
friend class AppCacheService; // for NotifyAppCacheIsDestroyed
friend class AppCacheStorageImpl; // for NotifyAppCacheIsReady
friend class AppCacheQuotaClientTest;
struct UsageRequest {
GURL origin;
quota::StorageType type;
GetUsageCallback* callback;
};
struct OriginsRequest {
quota::StorageType type;
std::string opt_host;
GetOriginsCallback* callback;
};
struct DeleteRequest {
GURL origin;
quota::StorageType type;
DeletionCallback* callback;
};
typedef std::deque<UsageRequest> UsageRequestQueue;
typedef std::deque<OriginsRequest> OriginsRequestQueue;
typedef std::deque<DeleteRequest> DeleteRequestQueue;
explicit AppCacheQuotaClient(AppCacheService* service);
void DidDeleteAppCachesForOrigin(int rv);
void GetOriginsHelper(quota::StorageType type,
const std::string& opt_host,
GetOriginsCallback* callback_ptr);
void ProcessPendingRequests();
void AbortPendingRequests();
void DeletePendingRequests();
const AppCacheStorage::UsageMap* GetUsageMap();
// For use by appcache internals during initialization and shutdown.
void NotifyAppCacheReady();
void NotifyAppCacheDestroyed();
// Prior to appcache service being ready, we have to queue
// up reqeusts and defer acting on them until we're ready.
UsageRequestQueue pending_usage_requests_;
OriginsRequestQueue pending_origins_requests_;
DeleteRequestQueue pending_delete_requests_;
// And once it's ready, we can only handle one delete request at a time,
// so we queue up additional requests while one is in already in progress.
scoped_ptr<DeletionCallback> current_delete_request_callback_;
scoped_refptr<net::CancelableCompletionCallback<AppCacheQuotaClient> >
service_delete_callback_;
AppCacheService* service_;
bool appcache_is_ready_;
bool quota_manager_is_destroyed_;
DISALLOW_COPY_AND_ASSIGN(AppCacheQuotaClient);
};
} // namespace appcache
#endif // WEBKIT_APPCACHE_APPCACHE_QUOTA_CLIENT_H_
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