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/*
* Copyright (C) 2019 Igalia S.L.
*
* 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.
*/
#pragma once
#include "PrivateRelayed.h"
#include <WebCore/ResourceRequest.h>
#include <WebCore/ResourceResponse.h>
#include <WebCore/SharedBuffer.h>
#include <WebCore/Timer.h>
#include <wtf/CheckedPtr.h>
#include <wtf/Deque.h>
#include <wtf/HashMap.h>
#include <wtf/TZoneMalloc.h>
#include <wtf/URLHash.h>
#include <wtf/text/WTFString.h>
namespace WebKit {
class PrefetchCache final : public CanMakeCheckedPtr<PrefetchCache> {
WTF_MAKE_TZONE_ALLOCATED(PrefetchCache);
WTF_OVERRIDE_DELETE_FOR_CHECKED_PTR(PrefetchCache);
WTF_MAKE_NONCOPYABLE(PrefetchCache);
public:
PrefetchCache();
~PrefetchCache();
void clear();
struct Entry {
WTF_MAKE_STRUCT_FAST_ALLOCATED;
Entry(WebCore::ResourceResponse&&, PrivateRelayed, RefPtr<WebCore::FragmentedSharedBuffer>&&);
Entry(WebCore::ResourceResponse&&, WebCore::ResourceRequest&&);
Ref<WebCore::FragmentedSharedBuffer> releaseBuffer() { return buffer.releaseNonNull(); }
WebCore::ResourceResponse response;
PrivateRelayed privateRelayed { PrivateRelayed::No };
// FIXME: This should probably be a variant<RefPtr, ResourceRequest> because we have one or the other but never both.
RefPtr<WebCore::FragmentedSharedBuffer> buffer;
WebCore::ResourceRequest redirectRequest;
};
std::unique_ptr<Entry> take(const URL&);
void store(const URL&, WebCore::ResourceResponse&&, PrivateRelayed, RefPtr<WebCore::FragmentedSharedBuffer>&&);
void storeRedirect(const URL&, WebCore::ResourceResponse&&, WebCore::ResourceRequest&&);
private:
void clearExpiredEntries();
using PrefetchEntriesMap = HashMap<URL, std::unique_ptr<Entry>>;
std::unique_ptr<PrefetchEntriesMap> m_sessionPrefetches;
using SessionPrefetchExpirationList = Deque<std::tuple<URL, WallTime>>;
SessionPrefetchExpirationList m_sessionExpirationList;
WebCore::Timer m_expirationTimer;
};
} // namespace WebKit
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