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/*
* Copyright (C) 2015 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef NetworkCacheStatistics_h
#define NetworkCacheStatistics_h
#if ENABLE(NETWORK_CACHE)
#include "NetworkCache.h"
#include "NetworkCacheKey.h"
#include <WebCore/SQLiteDatabase.h>
#include <WebCore/Timer.h>
#include <wtf/WorkQueue.h>
namespace WebCore {
class ResourceRequest;
}
namespace WebKit {
namespace NetworkCache {
class Statistics {
public:
static std::unique_ptr<Statistics> open(const String& cachePath);
void clear();
void recordRetrievalRequest(uint64_t webPageID);
void recordNotCachingResponse(const Key&, StoreDecision);
void recordNotUsingCacheForRequest(uint64_t webPageID, const Key&, const WebCore::ResourceRequest&, RetrieveDecision);
void recordRetrievalFailure(uint64_t webPageID, const Key&, const WebCore::ResourceRequest&);
void recordRetrievedCachedEntry(uint64_t webPageID, const Key&, const WebCore::ResourceRequest&, UseDecision);
void recordRevalidationSuccess(uint64_t webPageID, const Key&, const WebCore::ResourceRequest&);
private:
explicit Statistics(const String& databasePath);
WorkQueue& serialBackgroundIOQueue() { return m_serialBackgroundIOQueue.get(); }
void initialize(const String& databasePath);
void bootstrapFromNetworkCache(const String& networkCachePath);
void shrinkIfNeeded();
void addHashesToDatabase(const Vector<StringCapture>& hashes);
void addStoreDecisionsToDatabase(const Vector<std::pair<StringCapture, NetworkCache::StoreDecision>>&);
void writeTimerFired();
typedef std::function<void (bool wasEverRequested, const Optional<StoreDecision>&)> RequestedCompletionHandler;
enum class NeedUncachedReason { No, Yes };
void queryWasEverRequested(const String&, NeedUncachedReason, const RequestedCompletionHandler&);
void markAsRequested(const String& hash);
struct EverRequestedQuery {
String hash;
bool needUncachedReason;
RequestedCompletionHandler completionHandler;
};
std::atomic<size_t> m_approximateEntryCount { 0 };
mutable Ref<WorkQueue> m_serialBackgroundIOQueue;
mutable HashSet<std::unique_ptr<const EverRequestedQuery>> m_activeQueries;
WebCore::SQLiteDatabase m_database;
HashSet<String> m_hashesToAdd;
HashMap<String, NetworkCache::StoreDecision> m_storeDecisionsToAdd;
WebCore::Timer m_writeTimer;
};
}
}
#endif // ENABLE(NETWORK_CACHE)
#endif // NetworkCacheStatistics_h
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