| // Copyright 2013 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 STORAGE_BROWSER_QUOTA_USAGE_TRACKER_H_ |
| #define STORAGE_BROWSER_QUOTA_USAGE_TRACKER_H_ |
| |
| #include <stdint.h> |
| |
| #include <map> |
| #include <memory> |
| #include <set> |
| #include <string> |
| |
| #include "base/callback.h" |
| #include "base/containers/flat_map.h" |
| #include "base/macros.h" |
| #include "storage/browser/quota/quota_callbacks.h" |
| #include "storage/browser/quota/quota_client.h" |
| #include "storage/browser/quota/quota_task.h" |
| #include "storage/browser/quota/special_storage_policy.h" |
| #include "storage/browser/storage_browser_export.h" |
| #include "storage/common/quota/quota_types.h" |
| #include "url/gurl.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); |
| ~UsageTracker() override; |
| |
| 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 GetHostUsageWithBreakdown(const std::string& host, |
| const UsageWithBreakdownCallback& callback); |
| void UpdateUsageCache(QuotaClient::ID client_id, |
| const GURL& origin, |
| int64_t delta); |
| int64_t GetCachedUsage() const; |
| void GetCachedHostsUsage(std::map<std::string, int64_t>* host_usage) const; |
| void GetCachedOriginsUsage(std::map<GURL, int64_t>* origin_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(); |
| ~AccumulateInfo(); |
| int pending_clients = 0; |
| int64_t usage = 0; |
| int64_t unlimited_usage = 0; |
| base::flat_map<QuotaClient::ID, int64_t> usage_breakdown; |
| }; |
| |
| typedef CallbackQueue<UsageCallback, int64_t> UsageCallbackQueue; |
| typedef CallbackQueue<GlobalUsageCallback, int64_t, int64_t> |
| GlobalUsageCallbackQueue; |
| typedef CallbackQueueMap<UsageWithBreakdownCallback, |
| std::string, |
| int64_t, |
| base::flat_map<QuotaClient::ID, int64_t>> |
| HostUsageCallbackMap; |
| |
| friend class ClientUsageTracker; |
| void AccumulateClientGlobalLimitedUsage(AccumulateInfo* info, |
| int64_t limited_usage); |
| void AccumulateClientGlobalUsage(AccumulateInfo* info, |
| int64_t usage, |
| int64_t unlimited_usage); |
| void AccumulateClientHostUsage(const base::Closure& barrier, |
| AccumulateInfo* info, |
| const std::string& host, |
| QuotaClient::ID client, |
| int64_t usage); |
| void FinallySendHostUsageWithBreakdown(AccumulateInfo* info, |
| const std::string& host); |
| |
| const StorageType type_; |
| std::map<QuotaClient::ID, std::unique_ptr<ClientUsageTracker>> |
| 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); |
| }; |
| |
| } // namespace storage |
| |
| #endif // STORAGE_BROWSER_QUOTA_USAGE_TRACKER_H_ |