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// 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 CHROME_BROWSER_DEVTOOLS_DEVTOOLS_NETWORK_INTERCEPTOR_H_
#define CHROME_BROWSER_DEVTOOLS_DEVTOOLS_NETWORK_INTERCEPTOR_H_
#include <set>
#include <string>
#include <utility>
#include <vector>
#include "base/macros.h"
#include "base/memory/scoped_ptr.h"
#include "base/timer/timer.h"
class DevToolsNetworkConditions;
class DevToolsNetworkTransaction;
namespace base {
class TimeDelta;
class TimeTicks;
}
// DevToolsNetworkInterceptor emulates network conditions for transactions with
// specific client id.
class DevToolsNetworkInterceptor {
public:
DevToolsNetworkInterceptor();
virtual ~DevToolsNetworkInterceptor();
base::WeakPtr<DevToolsNetworkInterceptor> GetWeakPtr();
// Applies network emulation configuration.
void UpdateConditions(scoped_ptr<DevToolsNetworkConditions> conditions);
void AddTransaction(DevToolsNetworkTransaction* transaction);
void RemoveTransaction(DevToolsNetworkTransaction* transaction);
bool ShouldFail(const DevToolsNetworkTransaction* transaction);
bool ShouldThrottle(const DevToolsNetworkTransaction* transaction);
void ThrottleTransaction(DevToolsNetworkTransaction* transaction, bool start);
const DevToolsNetworkConditions* conditions() const {
return conditions_.get();
}
private:
scoped_ptr<DevToolsNetworkConditions> conditions_;
void UpdateThrottledTransactions(base::TimeTicks now);
void UpdateSuspendedTransactions(base::TimeTicks now);
void ArmTimer(base::TimeTicks now);
void OnTimer();
void FireThrottledCallback(DevToolsNetworkTransaction* transaction);
typedef std::set<DevToolsNetworkTransaction*> Transactions;
Transactions transactions_;
// Transactions suspended for a "latency" period.
typedef std::pair<DevToolsNetworkTransaction*, int64_t> SuspendedTransaction;
typedef std::vector<SuspendedTransaction> SuspendedTransactions;
SuspendedTransactions suspended_transactions_;
// Transactions waiting certain amount of transfer to be "accounted".
std::vector<DevToolsNetworkTransaction*> throttled_transactions_;
base::OneShotTimer<DevToolsNetworkInterceptor> timer_;
base::TimeTicks offset_;
base::TimeDelta tick_length_;
base::TimeDelta latency_length_;
uint64_t last_tick_;
base::WeakPtrFactory<DevToolsNetworkInterceptor> weak_ptr_factory_;
DISALLOW_COPY_AND_ASSIGN(DevToolsNetworkInterceptor);
};
#endif // CHROME_BROWSER_DEVTOOLS_DEVTOOLS_NETWORK_INTERCEPTOR_H_
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