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/*
* Copyright 2009, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
// Helper class to manage the process of uploading metrics.
#include "backend/serverconnectionmanager.h"
#include "statsreport/common/const_product.h"
#include "iobuffer/iobuffer-inl.h"
#include "statsreport/aggregator-posix-inl.h"
#include "statsreport/const-posix.h"
#include "statsreport/formatter.h"
#include "statsreport/uploader.h"
DECLARE_int32(metrics_aggregation_interval);
DECLARE_int32(metrics_upload_interval);
DECLARE_string(metrics_server_name);
DECLARE_int32(metrics_server_port);
using stats_report::Formatter;
using stats_report::MetricsAggregatorPosix;
namespace {
bool AggregateMetrics(MetricsAggregatorPosix *aggregator) {
if (!aggregator->AggregateMetrics()) {
LOG(WARNING) << "Metrics aggregation failed for reasons unknown";
return false;
}
return true;
}
bool ReportMetrics(MetricsAggregatorPosix *aggregator,
const char* extra_url_data,
const char* user_agent,
uint32 interval) {
Formatter formatter(PRODUCT_NAME_STRING, interval);
aggregator->FormatMetrics(&formatter);
DLOG(INFO) << "formatter.output() = " << formatter.output();
return UploadMetrics(extra_url_data, user_agent, formatter.output().c_str());
}
} // namespace
namespace stats_report {
bool AggregateMetrics() {
MetricsAggregatorPosix aggregator(g_global_metrics);
return ::AggregateMetrics(&aggregator);
}
// Returns:
// true if metrics were uploaded successfully, false otherwise
// Note: False does not necessarily mean an error, just that no metrics
// were uploaded
bool AggregateAndReportMetrics(const char* extra_url_arguments,
const char* user_agent,
bool force_report,
bool save_old_metrics) {
StatsUploader stats_uploader;
return TestableAggregateAndReportMetrics(extra_url_arguments, user_agent,
force_report, save_old_metrics,
&stats_uploader);
}
// Returns:
// true if metrics were uploaded successfully, false otherwise
// Note: False does not necessarily mean an error, just that no metrics
// were uploaded
bool TestableAggregateAndReportMetrics(const char* extra_url_arguments,
const char* user_agent,
bool force_report,
bool save_old_metrics,
StatsUploader* stats_uploader) {
// Open the store
MetricsAggregatorPosix aggregator(g_global_metrics);
int32 now = static_cast<int32>(time(NULL));
// Retrieve the last transmission time
int32 last_transmission_time;
bool success = aggregator.GetValue(kLastTransmissionTimeValueName,
&last_transmission_time);
// if last transmission time is missing or at all hinky, then
// let's wipe all info and start afresh.
if (!success || last_transmission_time > now) {
LOG(WARNING) << "Hinky or missing last transmission time, wiping stats";
if (!save_old_metrics) aggregator.ResetMetrics();
success = aggregator.SetValue(kLastTransmissionTimeValueName, now);
if (!success)
LOG(ERROR) << "Unable to write last transmission value";
// we just wiped everything, let's not waste any more time
return false;
}
if (!::AggregateMetrics(&aggregator))
return false;
if (now - last_transmission_time >= kStatsUploadInterval) {
bool report_result = ReportMetrics(&aggregator, extra_url_arguments,
user_agent,
now - last_transmission_time);
if (report_result) {
LOG(INFO) << "Stats upload successful, resetting metrics";
aggregator.ResetMetrics();
} else {
LOG(WARNING) << "Stats upload failed";
}
// No matter what, wait another upload interval to try again. It's better
// to report older stats than hammer on the stats server exactly when it's
// failed.
(void)aggregator.SetValue(kLastTransmissionTimeValueName, now);
return report_result;
}
return false;
}
} // namespace stats_report
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