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// Copyright 2015 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/tracing/background_tracing_field_trial.h"
#include <string>
#include "base/json/json_reader.h"
#include "base/metrics/field_trial.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/tracing/crash_service_uploader.h"
#include "chrome/common/variations/variations_util.h"
#include "components/variations/variations_associated_data.h"
#include "content/public/browser/background_tracing_config.h"
#include "content/public/browser/background_tracing_manager.h"
#include "content/public/browser/browser_thread.h"
#include "url/gurl.h"
namespace tracing {
namespace {
const char kBackgroundTracingFieldTrial[] = "BackgroundTracing";
const char kBackgroundTracingConfig[] = "config";
const char kBackgroundTracingUploadUrl[] = "upload_url";
ConfigTextFilterForTesting g_config_text_filter_for_testing = nullptr;
void OnUploadComplete(TraceCrashServiceUploader* uploader,
const base::Closure& done_callback,
bool success,
const std::string& feedback) {
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
done_callback.Run();
}
void UploadCallback(const std::string& upload_url,
const scoped_refptr<base::RefCountedString>& file_contents,
scoped_ptr<base::DictionaryValue> metadata,
base::Closure callback) {
TraceCrashServiceUploader* uploader = new TraceCrashServiceUploader(
g_browser_process->system_request_context());
if (GURL(upload_url).is_valid())
uploader->SetUploadURL(upload_url);
uploader->DoUpload(
file_contents->data(), metadata.Pass(),
content::TraceUploader::UploadProgressCallback(),
base::Bind(&OnUploadComplete, base::Owned(uploader), callback));
}
} // namespace
void SetConfigTextFilterForTesting(ConfigTextFilterForTesting predicate) {
g_config_text_filter_for_testing = predicate;
}
void SetupBackgroundTracingFieldTrial() {
std::string config_text = variations::GetVariationParamValue(
kBackgroundTracingFieldTrial, kBackgroundTracingConfig);
std::string upload_url = variations::GetVariationParamValue(
kBackgroundTracingFieldTrial, kBackgroundTracingUploadUrl);
if (config_text.empty())
return;
if (g_config_text_filter_for_testing)
(*g_config_text_filter_for_testing)(&config_text);
scoped_ptr<base::Value> value = base::JSONReader::Read(config_text);
if (!value)
return;
const base::DictionaryValue* dict = nullptr;
if (!value->GetAsDictionary(&dict))
return;
scoped_ptr<content::BackgroundTracingConfig> config =
content::BackgroundTracingConfig::FromDict(dict);
if (!config)
return;
content::BackgroundTracingManager::GetInstance()->SetActiveScenario(
config.Pass(), base::Bind(&UploadCallback, upload_url),
content::BackgroundTracingManager::ANONYMIZE_DATA);
}
} // namespace tracing
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