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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.
#include "content/browser/devtools/devtools_tracing_handler.h"
#include "base/bind.h"
#include "base/callback.h"
#include "base/json/json_writer.h"
#include "base/location.h"
#include "base/strings/string_split.h"
#include "base/values.h"
#include "content/browser/devtools/devtools_http_handler_impl.h"
#include "content/public/browser/trace_controller.h"
#include "content/public/browser/trace_subscriber.h"
namespace content {
namespace {
const char kTracingStartCommand[] = "Tracing.start";
const char kTracingEndCommand[] = "Tracing.end";
const char kTracingCompleteNotification[] = "Tracing.tracingComplete";
const char kTracingDataCollected[] = "Tracing.dataCollected";
const char kCategoriesParam[] = "categories";
const char kTraceOptionsParam[] = "trace-options";
const char kRecordUntilFull[] = "record-until-full";
const char kRecordContinuously[] = "record-continuously";
} // namespace
const char DevToolsTracingHandler::kDomain[] = "Tracing";
DevToolsTracingHandler::DevToolsTracingHandler()
: is_running_(false) {
RegisterCommandHandler(kTracingStartCommand,
base::Bind(&DevToolsTracingHandler::OnStart,
base::Unretained(this)));
RegisterCommandHandler(kTracingEndCommand,
base::Bind(&DevToolsTracingHandler::OnEnd,
base::Unretained(this)));
}
DevToolsTracingHandler::~DevToolsTracingHandler() {
}
void DevToolsTracingHandler::OnEndTracingComplete() {
is_running_ = false;
SendNotification(kTracingCompleteNotification, NULL);
}
void DevToolsTracingHandler::OnTraceDataCollected(
const scoped_refptr<base::RefCountedString>& trace_fragment) {
if (is_running_) {
base::DictionaryValue* params = new base::DictionaryValue();
params->SetString("value", trace_fragment->data());
SendNotification(kTracingDataCollected, params);
}
}
// Note, if you add more options here you also need to update:
// base/debug/trace_event_impl:TraceOptionsFromString
base::debug::TraceLog::Options DevToolsTracingHandler::TraceOptionsFromString(
const std::string& options) {
std::vector<std::string> split;
std::vector<std::string>::iterator iter;
int ret = 0;
base::SplitString(options, ',', &split);
for (iter = split.begin(); iter != split.end(); ++iter) {
if (*iter == kRecordUntilFull) {
ret |= base::debug::TraceLog::RECORD_UNTIL_FULL;
} else if (*iter == kRecordContinuously) {
ret |= base::debug::TraceLog::RECORD_CONTINUOUSLY;
}
}
if (!(ret & base::debug::TraceLog::RECORD_UNTIL_FULL) &&
!(ret & base::debug::TraceLog::RECORD_CONTINUOUSLY))
ret |= base::debug::TraceLog::RECORD_UNTIL_FULL;
return static_cast<base::debug::TraceLog::Options>(ret);
}
scoped_ptr<DevToolsProtocol::Response>
DevToolsTracingHandler::OnStart(DevToolsProtocol::Command* command) {
std::string categories;
base::DictionaryValue* params = command->params();
if (params && params->HasKey(kCategoriesParam))
params->GetString(kCategoriesParam, &categories);
base::debug::TraceLog::Options options =
base::debug::TraceLog::RECORD_UNTIL_FULL;
if (params && params->HasKey(kTraceOptionsParam)) {
std::string options_param;
params->GetString(kTraceOptionsParam, &options_param);
options = TraceOptionsFromString(options_param);
}
TraceController::GetInstance()->BeginTracing(this, categories, options);
is_running_ = true;
return command->SuccessResponse(NULL);
}
scoped_ptr<DevToolsProtocol::Response>
DevToolsTracingHandler::OnEnd(DevToolsProtocol::Command* command) {
TraceController::GetInstance()->EndTracingAsync(this);
return command->SuccessResponse(NULL);
}
} // namespace content
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