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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/location.h"
#include "base/strings/string_split.h"
#include "base/strings/stringprintf.h"
#include "base/values.h"
#include "content/browser/devtools/devtools_http_handler_impl.h"
#include "content/browser/devtools/devtools_protocol_constants.h"
#include "content/public/browser/trace_controller.h"
#include "content/public/browser/trace_subscriber.h"
namespace content {
namespace {
const char kRecordUntilFull[] = "record-until-full";
const char kRecordContinuously[] = "record-continuously";
const char kEnableSampling[] = "enable-sampling";
} // namespace
DevToolsTracingHandler::DevToolsTracingHandler()
: is_running_(false) {
RegisterCommandHandler(devtools::Tracing::start::kName,
base::Bind(&DevToolsTracingHandler::OnStart,
base::Unretained(this)));
RegisterCommandHandler(devtools::Tracing::end::kName,
base::Bind(&DevToolsTracingHandler::OnEnd,
base::Unretained(this)));
}
DevToolsTracingHandler::~DevToolsTracingHandler() {
}
void DevToolsTracingHandler::OnEndTracingComplete() {
is_running_ = false;
SendNotification(devtools::Tracing::tracingComplete::kName, NULL);
}
void DevToolsTracingHandler::OnTraceDataCollected(
const scoped_refptr<base::RefCountedString>& trace_fragment) {
if (is_running_) {
// Hand-craft protocol notification message so we can substitute JSON
// that we already got as string as a bare object, not a quoted string.
std::string message = base::StringPrintf(
"{ \"method\": \"%s\", \"params\": { \"%s\": [ %s ] } }",
devtools::Tracing::dataCollected::kName,
devtools::Tracing::dataCollected::kValue,
trace_fragment->data().c_str());
SendRawMessage(message);
}
}
// 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;
} else if (*iter == kEnableSampling) {
ret |= base::debug::TraceLog::ENABLE_SAMPLING;
}
}
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_refptr<DevToolsProtocol::Response>
DevToolsTracingHandler::OnStart(
scoped_refptr<DevToolsProtocol::Command> command) {
std::string categories;
base::DictionaryValue* params = command->params();
if (params)
params->GetString(devtools::Tracing::start::kCategories, &categories);
base::debug::TraceLog::Options options =
base::debug::TraceLog::RECORD_UNTIL_FULL;
if (params && params->HasKey(devtools::Tracing::start::kTraceOptions)) {
std::string options_param;
params->GetString(devtools::Tracing::start::kTraceOptions, &options_param);
options = TraceOptionsFromString(options_param);
}
TraceController::GetInstance()->BeginTracing(this, categories, options);
is_running_ = true;
return command->SuccessResponse(NULL);
}
scoped_refptr<DevToolsProtocol::Response>
DevToolsTracingHandler::OnEnd(
scoped_refptr<DevToolsProtocol::Command> command) {
TraceController::GetInstance()->EndTracingAsync(this);
return command->SuccessResponse(NULL);
}
} // namespace content
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