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/*
* Copyright (C) 2023 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.
*/
#include "config.h"
#include "NetworkQuotaManager.h"
#include "NetworkStorageManager.h"
namespace WebKit {
NetworkQuotaManager::NetworkQuotaManager(uint64_t quota, const Vector<std::pair<WebCore::ClientOrigin, uint64_t>>& usages, Function<bool(const WebCore::SecurityOriginData&)>&& function)
: m_quota(quota)
, m_evictDataFunction(WTFMove(function))
{
for (auto [origin, usage] : usages) {
m_origins.appendOrMoveToLast(origin.topOrigin);
m_originUsageMap.ensure(origin.topOrigin, [] {
return HashMap<WebCore::SecurityOriginData, uint64_t> { };
}).iterator->value.add(origin.clientOrigin, usage);
}
performEvictionIfNeeded();
}
void NetworkQuotaManager::originUsageUpdated(const WebCore::ClientOrigin& origin, uint64_t usage)
{
originVisited(origin);
auto& originUsage = m_originUsageMap.ensure(origin.topOrigin, [] {
return HashMap<WebCore::SecurityOriginData, uint64_t> { };
}).iterator->value;
auto iterator = originUsage.ensure(origin.clientOrigin, [] {
return 0;
}).iterator;
auto currentUsage = iterator->value;
iterator->value = usage;
if (usage <= currentUsage)
return;
performEvictionIfNeeded();
}
void NetworkQuotaManager::performEvictionIfNeeded()
{
if (!m_evictDataFunction)
return;
uint64_t totalUsage = 0;
for (auto origin : m_origins) {
auto iterator = m_originUsageMap.find(origin);
if (iterator == m_originUsageMap.end())
continue;
for (auto usage : iterator->value.values())
totalUsage += usage;
}
while (totalUsage > m_quota) {
ASSERT(!m_origins.isEmpty());
auto topOrigin = m_origins.first();
if (!m_evictDataFunction(topOrigin))
break;
m_origins.removeFirst();
auto originUsage = m_originUsageMap.take(topOrigin);
for (auto& [origin, usage] : originUsage)
totalUsage -= usage;
}
}
void NetworkQuotaManager::originVisited(const WebCore::ClientOrigin& origin)
{
m_origins.appendOrMoveToLast(origin.topOrigin);
}
} // namespace WebKit
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