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// 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 handles uploading serialized logs to a server.
#include "components/metrics/reporting_service.h"
#include "base/base64.h"
#include "base/bind.h"
#include "base/callback.h"
#include "base/command_line.h"
#include "base/logging.h"
#include "base/strings/string_number_conversions.h"
#include "components/metrics/data_use_tracker.h"
#include "components/metrics/log_store.h"
#include "components/metrics/metrics_log_uploader.h"
#include "components/metrics/metrics_service_client.h"
#include "components/metrics/metrics_upload_scheduler.h"
namespace metrics {
// static
void ReportingService::RegisterPrefs(PrefRegistrySimple* registry) {
DataUseTracker::RegisterPrefs(registry);
}
ReportingService::ReportingService(MetricsServiceClient* client,
PrefService* local_state,
size_t max_retransmit_size)
: client_(client),
max_retransmit_size_(max_retransmit_size),
reporting_active_(false),
log_upload_in_progress_(false),
data_use_tracker_(DataUseTracker::Create(local_state)) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
DCHECK(client_);
DCHECK(local_state);
}
ReportingService::~ReportingService() {
DisableReporting();
}
void ReportingService::Initialize() {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
DCHECK(!upload_scheduler_);
log_store()->LoadPersistedUnsentLogs();
base::RepeatingClosure send_next_log_callback = base::BindRepeating(
&ReportingService::SendNextLog, self_ptr_factory_.GetWeakPtr());
bool fast_startup_for_testing = client_->ShouldStartUpFastForTesting();
upload_scheduler_.reset(new MetricsUploadScheduler(send_next_log_callback,
fast_startup_for_testing));
}
void ReportingService::Start() {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
if (reporting_active_)
upload_scheduler_->Start();
}
void ReportingService::Stop() {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
if (upload_scheduler_)
upload_scheduler_->Stop();
}
void ReportingService::EnableReporting() {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
if (reporting_active_)
return;
reporting_active_ = true;
Start();
}
void ReportingService::DisableReporting() {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
reporting_active_ = false;
Stop();
}
bool ReportingService::reporting_active() const {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
return reporting_active_;
}
//------------------------------------------------------------------------------
// private methods
//------------------------------------------------------------------------------
void ReportingService::SendNextLog() {
DVLOG(1) << "SendNextLog";
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
const base::TimeTicks now = base::TimeTicks::Now();
LogActualUploadInterval(last_upload_finish_time_.is_null()
? base::TimeDelta()
: now - last_upload_finish_time_);
last_upload_finish_time_ = now;
if (!reporting_active()) {
upload_scheduler_->StopAndUploadCancelled();
return;
}
if (!log_store()->has_unsent_logs()) {
// Should only get here if serializing the log failed somehow.
upload_scheduler_->Stop();
// Reset backoff interval
upload_scheduler_->UploadFinished(true);
return;
}
if (!log_store()->has_staged_log()) {
reporting_info_.set_attempt_count(0);
log_store()->StageNextLog();
}
// Proceed to stage the log for upload if log size satisfies cellular log
// upload constrains.
bool upload_canceled = false;
bool is_cellular_logic = client_->IsUMACellularUploadLogicEnabled();
if (is_cellular_logic && data_use_tracker_ &&
!data_use_tracker_->ShouldUploadLogOnCellular(
log_store()->staged_log().size())) {
upload_scheduler_->UploadOverDataUsageCap();
upload_canceled = true;
} else {
SendStagedLog();
}
if (is_cellular_logic) {
LogCellularConstraint(upload_canceled);
}
}
void ReportingService::SendStagedLog() {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
DCHECK(log_store()->has_staged_log());
if (!log_store()->has_staged_log())
return;
DCHECK(!log_upload_in_progress_);
log_upload_in_progress_ = true;
if (!log_uploader_) {
log_uploader_ = client_->CreateUploader(
GetUploadUrl(), GetInsecureUploadUrl(), upload_mime_type(),
service_type(),
base::BindRepeating(&ReportingService::OnLogUploadComplete,
self_ptr_factory_.GetWeakPtr()));
}
reporting_info_.set_attempt_count(reporting_info_.attempt_count() + 1);
const std::string hash =
base::HexEncode(log_store()->staged_log_hash().data(),
log_store()->staged_log_hash().size());
std::string signature;
base::Base64Encode(log_store()->staged_log_signature(), &signature);
log_uploader_->UploadLog(log_store()->staged_log(), hash, signature,
reporting_info_);
}
void ReportingService::OnLogUploadComplete(int response_code,
int error_code,
bool was_https) {
DVLOG(1) << "OnLogUploadComplete:" << response_code;
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
DCHECK(log_upload_in_progress_);
log_upload_in_progress_ = false;
reporting_info_.set_last_response_code(response_code);
reporting_info_.set_last_error_code(error_code);
reporting_info_.set_last_attempt_was_https(was_https);
// Log a histogram to track response success vs. failure rates.
LogResponseOrErrorCode(response_code, error_code, was_https);
bool upload_succeeded = response_code == 200;
// Staged log could have been removed already (such as by Purge() in some
// implementations), otherwise we may remove it here.
if (log_store()->has_staged_log()) {
// Provide boolean for error recovery (allow us to ignore response_code).
bool discard_log = false;
const size_t log_size = log_store()->staged_log().length();
if (upload_succeeded) {
LogSuccess(log_size);
} else if (log_size > max_retransmit_size_) {
LogLargeRejection(log_size);
discard_log = true;
} else if (response_code == 400) {
// Bad syntax. Retransmission won't work.
discard_log = true;
}
if (upload_succeeded || discard_log) {
if (upload_succeeded)
log_store()->MarkStagedLogAsSent();
log_store()->DiscardStagedLog();
// Store the updated list to disk now that the removed log is uploaded.
log_store()->PersistUnsentLogs();
}
}
// Error 400 indicates a problem with the log, not with the server, so
// don't consider that a sign that the server is in trouble.
bool server_is_healthy = upload_succeeded || response_code == 400;
if (!log_store()->has_unsent_logs()) {
DVLOG(1) << "Stopping upload_scheduler_.";
upload_scheduler_->Stop();
}
upload_scheduler_->UploadFinished(server_is_healthy);
}
} // namespace metrics
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