Migrate webkit/browser/ to storage/browser/

webkit/browser/quota/usage_tracker.h

-// Copyright 2013 The Chromium Authors. All rights reserved.
+// Copyright 2014 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_BROWSER_QUOTA_USAGE_TRACKER_H_
-#define WEBKIT_BROWSER_QUOTA_USAGE_TRACKER_H_
-
-#include <list>
-#include <map>
-#include <set>
-#include <string>
-
-#include "base/basictypes.h"
-#include "base/callback.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/threading/non_thread_safe.h"
-#include "url/gurl.h"
-#include "webkit/browser/quota/quota_callbacks.h"
-#include "webkit/browser/quota/quota_client.h"
-#include "webkit/browser/quota/quota_task.h"
-#include "webkit/browser/quota/special_storage_policy.h"
-#include "webkit/browser/storage_browser_export.h"
-#include "webkit/common/quota/quota_types.h"
-
-namespace storage {
-
-class ClientUsageTracker;
-class StorageMonitor;
-
-// A helper class that gathers and tracks the amount of data stored in
-// all quota clients.
-// An instance of this class is created per storage type.
-class STORAGE_EXPORT UsageTracker : public QuotaTaskObserver {
- public:
-  UsageTracker(const QuotaClientList& clients, StorageType type,
-               SpecialStoragePolicy* special_storage_policy,
-               StorageMonitor* storage_monitor);
-  virtual ~UsageTracker();
-
-  StorageType type() const { return type_; }
-  ClientUsageTracker* GetClientTracker(QuotaClient::ID client_id);
-
-  void GetGlobalLimitedUsage(const UsageCallback& callback);
-  void GetGlobalUsage(const GlobalUsageCallback& callback);
-  void GetHostUsage(const std::string& host, const UsageCallback& callback);
-  void UpdateUsageCache(QuotaClient::ID client_id,
-                        const GURL& origin,
-                        int64 delta);
-  void GetCachedHostsUsage(std::map<std::string, int64>* host_usage) const;
-  void GetCachedOrigins(std::set<GURL>* origins) const;
-  bool IsWorking() const {
-    return global_usage_callbacks_.HasCallbacks() ||
-           host_usage_callbacks_.HasAnyCallbacks();
-  }
-
-  void SetUsageCacheEnabled(QuotaClient::ID client_id,
-                            const GURL& origin,
-                            bool enabled);
-
- private:
-  struct AccumulateInfo {
-    AccumulateInfo() : pending_clients(0), usage(0), unlimited_usage(0) {}
-    int pending_clients;
-    int64 usage;
-    int64 unlimited_usage;
-  };
-
-  typedef std::map<QuotaClient::ID, ClientUsageTracker*> ClientTrackerMap;
-
-  friend class ClientUsageTracker;
-  void AccumulateClientGlobalLimitedUsage(AccumulateInfo* info,
-                                          int64 limited_usage);
-  void AccumulateClientGlobalUsage(AccumulateInfo* info,
-                                   int64 usage,
-                                   int64 unlimited_usage);
-  void AccumulateClientHostUsage(AccumulateInfo* info,
-                                 const std::string& host,
-                                 int64 usage);
-
-  const StorageType type_;
-  ClientTrackerMap client_tracker_map_;
-
-  UsageCallbackQueue global_limited_usage_callbacks_;
-  GlobalUsageCallbackQueue global_usage_callbacks_;
-  HostUsageCallbackMap host_usage_callbacks_;
-
-  StorageMonitor* storage_monitor_;
-
-  base::WeakPtrFactory<UsageTracker> weak_factory_;
-  DISALLOW_COPY_AND_ASSIGN(UsageTracker);
-};
-
-// This class holds per-client usage tracking information and caches per-host
-// usage data.  An instance of this class is created per client.
-class ClientUsageTracker : public SpecialStoragePolicy::Observer,
-                           public base::NonThreadSafe,
-                           public base::SupportsWeakPtr<ClientUsageTracker> {
- public:
-  typedef base::Callback<void(int64 limited_usage,
-                              int64 unlimited_usage)> HostUsageAccumulator;
-  typedef base::Callback<void(const GURL& origin,
-                              int64 usage)> OriginUsageAccumulator;
-  typedef std::map<std::string, std::set<GURL> > OriginSetByHost;
-
-  ClientUsageTracker(UsageTracker* tracker,
-                     QuotaClient* client,
-                     StorageType type,
-                     SpecialStoragePolicy* special_storage_policy,
-                     StorageMonitor* storage_monitor);
-  virtual ~ClientUsageTracker();
-
-  void GetGlobalLimitedUsage(const UsageCallback& callback);
-  void GetGlobalUsage(const GlobalUsageCallback& callback);
-  void GetHostUsage(const std::string& host, const UsageCallback& callback);
-  void UpdateUsageCache(const GURL& origin, int64 delta);
-  void GetCachedHostsUsage(std::map<std::string, int64>* host_usage) const;
-  void GetCachedOrigins(std::set<GURL>* origins) const;
-  int64 GetCachedOriginsUsage(const std::set<GURL>& origins,
-                              std::vector<GURL>* origins_not_in_cache);
-  bool IsUsageCacheEnabledForOrigin(const GURL& origin) const;
-  void SetUsageCacheEnabled(const GURL& origin, bool enabled);
-
- private:
-  typedef CallbackQueueMap<HostUsageAccumulator, std::string,
-                           Tuple2<int64, int64> > HostUsageAccumulatorMap;
-
-  typedef std::set<std::string> HostSet;
-  typedef std::map<GURL, int64> UsageMap;
-  typedef std::map<std::string, UsageMap> HostUsageMap;
-
-  struct AccumulateInfo {
-    int pending_jobs;
-    int64 limited_usage;
-    int64 unlimited_usage;
-
-    AccumulateInfo()
-        : pending_jobs(0), limited_usage(0), unlimited_usage(0) {}
-  };
-
-  void AccumulateLimitedOriginUsage(AccumulateInfo* info,
-                                    const UsageCallback& callback,
-                                    int64 usage);
-  void DidGetOriginsForGlobalUsage(const GlobalUsageCallback& callback,
-                                   const std::set<GURL>& origins);
-  void AccumulateHostUsage(AccumulateInfo* info,
-                           const GlobalUsageCallback& callback,
-                           int64 limited_usage,
-                           int64 unlimited_usage);
-
-  void DidGetOriginsForHostUsage(const std::string& host,
-                                 const std::set<GURL>& origins);
-
-  void GetUsageForOrigins(const std::string& host,
-                          const std::set<GURL>& origins);
-  void AccumulateOriginUsage(AccumulateInfo* info,
-                             const std::string& host,
-                             const GURL& origin,
-                             int64 usage);
-
-  void DidGetHostUsageAfterUpdate(const GURL& origin, int64 usage);
-
-  // Methods used by our GatherUsage tasks, as a task makes progress
-  // origins and hosts are added incrementally to the cache.
-  void AddCachedOrigin(const GURL& origin, int64 usage);
-  void AddCachedHost(const std::string& host);
-
-  int64 GetCachedHostUsage(const std::string& host) const;
-  int64 GetCachedGlobalUnlimitedUsage();
-  bool GetCachedOriginUsage(const GURL& origin, int64* usage) const;
-
-  // SpecialStoragePolicy::Observer overrides
-  virtual void OnGranted(const GURL& origin, int change_flags) OVERRIDE;
-  virtual void OnRevoked(const GURL& origin, int change_flags) OVERRIDE;
-  virtual void OnCleared() OVERRIDE;
-
-  bool IsStorageUnlimited(const GURL& origin) const;
-
-  UsageTracker* tracker_;
-  QuotaClient* client_;
-  const StorageType type_;
-  StorageMonitor* storage_monitor_;
-
-  int64 global_limited_usage_;
-  int64 global_unlimited_usage_;
-  bool global_usage_retrieved_;
-  HostSet cached_hosts_;
-  HostUsageMap cached_usage_by_host_;
-
-  OriginSetByHost non_cached_limited_origins_by_host_;
-  OriginSetByHost non_cached_unlimited_origins_by_host_;
-
-  GlobalUsageCallbackQueue global_usage_callback_;
-  HostUsageAccumulatorMap host_usage_accumulators_;
-
-  scoped_refptr<SpecialStoragePolicy> special_storage_policy_;
-
-  DISALLOW_COPY_AND_ASSIGN(ClientUsageTracker);
-};
-
-}  // namespace storage
-
-#endif  // WEBKIT_BROWSER_QUOTA_USAGE_TRACKER_H_
+#include "storage/browser/quota/usage_tracker.h"