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// Copyright 2013 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 NET_BASE_NET_LOG_LOGGER_H_
#define NET_BASE_NET_LOG_LOGGER_H_
#include <stdio.h>
#include "base/files/scoped_file.h"
#include "base/macros.h"
#include "net/base/net_log.h"
namespace base {
class DictionaryValue;
class FilePath;
class Value;
}
namespace net {
// NetLogLogger watches the NetLog event stream, and sends all entries to
// a file specified on creation.
//
// The text file will contain a single JSON object.
class NET_EXPORT NetLogLogger : public 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.
// |constants| is a legend for decoding constant values used in the log.
NetLogLogger(FILE* file, const base::Value& constants);
~NetLogLogger() override;
// Sets the log level to log at. Must be called before StartObserving.
void set_log_level(NetLog::LogLevel log_level);
// Starts observing specified NetLog. Must not already be watching a NetLog.
// Separate from constructor to enforce thread safety.
void StartObserving(NetLog* net_log);
// Stops observing net_log(). Must already be watching.
void StopObserving();
// net::NetLog::ThreadSafeObserver implementation:
void OnAddEntry(const NetLog::Entry& entry) override;
// Create a dictionary containing legend for net/ constants. Caller takes
// ownership of returned value.
// TODO(mmenke): Get rid of this, and have embedders use GetNetConstants
// directly. Also maybe call that function by default, so only embedders
// that need more constants need to worry about it.
static base::DictionaryValue* GetConstants();
private:
base::ScopedFILE file_;
// The LogLevel to log at.
NetLog::LogLevel log_level_;
// True if OnAddEntry() has been called at least once.
bool added_events_;
DISALLOW_COPY_AND_ASSIGN(NetLogLogger);
};
} // namespace net
#endif // NET_BASE_NET_LOG_LOGGER_H_
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