1// Copyright (c) 2010 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "chrome/browser/net/net_log_logger.h"
6
7#include <stdio.h>
8
9#include "base/file_util.h"
10#include "base/json/json_writer.h"
11#include "base/threading/thread_restrictions.h"
12#include "base/values.h"
13
14NetLogLogger::NetLogLogger(const FilePath &log_path)
15    : ThreadSafeObserver(net::NetLog::LOG_ALL_BUT_BYTES) {
16  if (!log_path.empty()) {
17    base::ThreadRestrictions::ScopedAllowIO allow_io;
18    file_.Set(file_util::OpenFile(log_path, "w"));
19  }
20}
21
22NetLogLogger::~NetLogLogger() {}
23
24void NetLogLogger::OnAddEntry(net::NetLog::EventType type,
25                              const base::TimeTicks& time,
26                              const net::NetLog::Source& source,
27                              net::NetLog::EventPhase phase,
28                              net::NetLog::EventParameters* params) {
29  scoped_ptr<Value> value(net::NetLog::EntryToDictionaryValue(type, time,
30                                                              source, phase,
31                                                              params, true));
32  // Don't pretty print, so each JSON value occupies a single line, with no
33  // breaks (Line breaks in any text field will be escaped).  Using strings
34  // instead of integer identifiers allows logs from older versions to be
35  // loaded, though a little extra parsing has to be done when loading a log.
36  std::string json;
37  base::JSONWriter::Write(value.get(), false, &json);
38  if (!file_.get()) {
39    VLOG(1) << json;
40  } else {
41    fprintf(file_.get(), "%s\n", json.c_str());
42  }
43}
44
45