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// Copyright (c) 2012 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_NET_NET_LOG_LOGGER_H_
#define CHROME_BROWSER_NET_NET_LOG_LOGGER_H_
#include <stdio.h>
#include "base/memory/scoped_handle.h"
#include "net/base/net_log.h"
namespace base {
class FilePath;
}
// NetLogLogger watches the NetLog event stream, and sends all entries to
// a file specified on creation. This is to debug errors in cases where
// about:net-internals doesn't work well (Mobile, startup / shutdown errors,
// errors that prevent getting to the about:net-internals).
//
// The text file will contain a single JSON object.
//
// Relies on ChromeNetLog only calling an Observer once at a time for
// thread-safety.
class NetLogLogger : public net::NetLog::ThreadSafeObserver {
public:
// Takes ownership of |file| and will write network events to it once logging
// starts. |file| must be non-NULL handle and be open for writing.
explicit NetLogLogger(FILE* file);
virtual ~NetLogLogger();
// Starts observing specified NetLog. Must not already be watching a NetLog.
// Separate from constructor to enforce thread safety.
void StartObserving(net::NetLog* net_log);
// Stops observing net_log(). Must already be watching.
void StopObserving();
// net::NetLog::ThreadSafeObserver implementation:
virtual void OnAddEntry(const net::NetLog::Entry& entry) OVERRIDE;
private:
ScopedStdioHandle file_;
// True if OnAddEntry() has been called at least once.
bool added_events_;
DISALLOW_COPY_AND_ASSIGN(NetLogLogger);
};
#endif // CHROME_BROWSER_NET_NET_LOG_LOGGER_H_
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