blob: c059bd6541f9c06accb2222a1a7f0be76f60b9bf [file] [log] [blame]
// Copyright 2017 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.
// ReportingService specialized to report UKM metrics.
#include "components/ukm/ukm_reporting_service.h"
#include <memory>
#include "base/metrics/field_trial_params.h"
#include "base/metrics/histogram_functions.h"
#include "base/metrics/histogram_macros.h"
#include "components/metrics/metrics_service_client.h"
#include "components/prefs/pref_registry_simple.h"
#include "components/ukm/unsent_log_store_metrics_impl.h"
#include "components/ukm/ukm_pref_names.h"
#include "components/ukm/ukm_service.h"
namespace ukm {
namespace {
// The UKM server's URL.
constexpr char kMimeType[] = "application/";
// The number of UKM logs that will be stored in UnsentLogStore before logs
// start being dropped.
constexpr int kMinUnsentLogCount = 8;
// The number of bytes UKM logs that will be stored in UnsentLogStore before
// logs start being dropped.
// This ensures that a reasonable amount of history will be stored even if there
// is a long series of very small logs.
constexpr int kMinUnsentLogBytes = 300000;
// If an upload fails, and the transmission was over this byte count, then we
// will discard the log, and not try to retransmit it. We also don't persist
// the log to the prefs for transmission during the next chrome session if this
// limit is exceeded.
constexpr size_t kMaxLogRetransmitSize = 100 * 1024;
GURL GetServerUrl() {
constexpr char kDefaultServerUrl[] = "";
std::string server_url =
base::GetFieldTrialParamValueByFeature(kUkmFeature, "ServerUrl");
if (!server_url.empty())
return GURL(server_url);
return GURL(kDefaultServerUrl);
} // namespace
// static
void UkmReportingService::RegisterPrefs(PrefRegistrySimple* registry) {
// Base class already registered by MetricsReportingService::RegisterPrefs
// ReportingService::RegisterPrefs(registry);
UkmReportingService::UkmReportingService(metrics::MetricsServiceClient* client,
PrefService* local_state)
: ReportingService(client, local_state, kMaxLogRetransmitSize),
client->GetUploadSigningKey()) {}
UkmReportingService::~UkmReportingService() {}
metrics::LogStore* UkmReportingService::log_store() {
return &unsent_log_store_;
GURL UkmReportingService::GetUploadUrl() const {
return GetServerUrl();
GURL UkmReportingService::GetInsecureUploadUrl() const {
return GURL();
base::StringPiece UkmReportingService::upload_mime_type() const {
return kMimeType;
UkmReportingService::service_type() const {
return metrics::MetricsLogUploader::UKM;
void UkmReportingService::LogCellularConstraint(bool upload_canceled) {
void UkmReportingService::LogResponseOrErrorCode(int response_code,
int error_code,
bool was_https) {
// |was_https| is ignored since all UKM logs are received over HTTPS.
response_code >= 0 ? response_code : error_code);
void UkmReportingService::LogSuccess(size_t log_size) {
UMA_HISTOGRAM_COUNTS_10000("UKM.LogSize.OnSuccess", log_size / 1024);
void UkmReportingService::LogLargeRejection(size_t log_size) {}
} // namespace metrics