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// Copyright (c) 2011 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.
#include "chrome/browser/net/net_log_logger.h"
#include <stdio.h>
#include "base/file_util.h"
#include "base/json/json_writer.h"
#include "base/memory/scoped_ptr.h"
#include "base/threading/thread_restrictions.h"
#include "base/values.h"
#include "chrome/browser/ui/webui/net_internals_ui.h"
NetLogLogger::NetLogLogger(const FilePath &log_path)
: ThreadSafeObserverImpl(net::NetLog::LOG_ALL_BUT_BYTES) {
if (!log_path.empty()) {
base::ThreadRestrictions::ScopedAllowIO allow_io;
file_.Set(file_util::OpenFile(log_path, "w"));
// Write constants to the output file. This allows loading files that have
// different source and event types, as they may be added and removed
// between Chrome versions.
scoped_ptr<Value> value(NetInternalsUI::GetConstants());
std::string json;
base::JSONWriter::Write(value.get(), false, &json);
fprintf(file_.get(), "{\"constants\": %s,\n", json.c_str());
fprintf(file_.get(), "\"events\": [\n");
}
}
NetLogLogger::~NetLogLogger() {
}
void NetLogLogger::OnAddEntry(net::NetLog::EventType type,
const base::TimeTicks& time,
const net::NetLog::Source& source,
net::NetLog::EventPhase phase,
net::NetLog::EventParameters* params) {
scoped_ptr<Value> value(
net::NetLog::EntryToDictionaryValue(
type, time, source, phase, params, false));
// Don't pretty print, so each JSON value occupies a single line, with no
// breaks (Line breaks in any text field will be escaped). Using strings
// instead of integer identifiers allows logs from older versions to be
// loaded, though a little extra parsing has to be done when loading a log.
std::string json;
base::JSONWriter::Write(value.get(), false, &json);
if (!file_.get()) {
VLOG(1) << json;
} else {
fprintf(file_.get(), "%s,\n", json.c_str());
}
}
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