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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 <atlbase.h>
#include <atlcom.h>
#include <atlsafe.h>
#include <time.h>
#include "base/logging.h"
#include "statsreport/uploader.h"
#include "statsreport/aggregator-win32.h"
#include "statsreport/const-win32.h"
#include "statsreport/persistent_iterator-win32.h"
#include "statsreport/formatter.h"
#include "statsreport/common/const_product.h"
namespace stats_report {
// TODO: Refactor to avoid cross platform code duplication.
bool AggregateMetrics() {
using stats_report::MetricsAggregatorWin32;
MetricsAggregatorWin32 aggregator(g_global_metrics, PRODUCT_NAME_STRING_WIDE);
if (!aggregator.AggregateMetrics()) {
DLOG(WARNING) << "Metrics aggregation failed for reasons unknown";
return false;
}
return true;
}
static bool ReportMetrics(const char* extra_url_data,
const char* user_agent,
DWORD interval,
StatsUploader* stats_uploader) {
PersistentMetricsIteratorWin32 it(PRODUCT_NAME_STRING_WIDE), end;
Formatter formatter(CStringA(PRODUCT_NAME_STRING), interval);
for (; it != end; ++it)
formatter.AddMetric(*it);
DLOG(INFO) << "formatter.output() = " << formatter.output();
return stats_uploader->UploadMetrics(extra_url_data, user_agent,
formatter.output().c_str());
}
void ResetPersistentMetrics(CRegKey *key) {
key->DeleteValue(kLastTransmissionTimeValueName);
key->DeleteSubKey(kCountsKeyName);
key->DeleteSubKey(kTimingsKeyName);
key->DeleteSubKey(kIntegersKeyName);
key->DeleteSubKey(kBooleansKeyName);
}
// 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) {
StatsUploader stats_uploader;
return TestableAggregateAndReportMetrics(extra_url_arguments, user_agent,
force_report, &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,
StatsUploader* stats_uploader) {
CString key_name;
key_name.Format(kStatsKeyFormatString, PRODUCT_NAME_STRING_WIDE);
CRegKey key;
LONG err = key.Create(HKEY_CURRENT_USER, key_name);
if (ERROR_SUCCESS != err) {
DLOG(WARNING) << "Unable to open metrics key";
return false;
}
DWORD now = static_cast<DWORD>(time(NULL));
// Retrieve the last transmission time
DWORD last_transmission_time;
DWORD value_type;
ULONG value_len = sizeof(last_transmission_time);
err = key.QueryValue(kLastTransmissionTimeValueName, &value_type,
&last_transmission_time, &value_len);
// if last transmission time is missing or at all hinky, then
// let's wipe all info and start afresh.
if (ERROR_SUCCESS != err || REG_DWORD != value_type ||
sizeof(last_transmission_time) != value_len ||
last_transmission_time > now) {
DLOG(WARNING) << "Hinky or missing last transmission time, wiping stats";
ResetPersistentMetrics(&key);
err = key.SetValue(kLastTransmissionTimeValueName, REG_DWORD,
&now, sizeof(now));
if (ERROR_SUCCESS != err) {
DLOG(ERROR) << "Unable to write last transmission value, error "
<< std::hex << err;
}
// Force a report of the stats so we get everything currently in there.
force_report = true;
// we just wiped everything, let's not waste any more time
// return; <-- skipping this since we still want to aggregate
}
if (!AggregateMetrics()) {
DLOG(INFO) << "AggregateMetrics returned false";
return false;
}
DLOG(INFO) << "Last transimission time: " << last_transmission_time;
DLOG(INFO) << "Now: " << now;
DLOG(INFO) << "Now - Last transmission time: "
<< now - last_transmission_time;
DLOG(INFO) << "Compared to: " << kStatsUploadIntervalSec;
// Set last_transmission_time such that it will force
// an upload of the metrics
if (force_report) {
last_transmission_time = now - kStatsUploadIntervalSec;
}
if (now - last_transmission_time >= kStatsUploadIntervalSec) {
bool report_result = ReportMetrics(extra_url_arguments, user_agent,
now - last_transmission_time,
stats_uploader);
if (report_result) {
DLOG(INFO) << "Stats upload successful, resetting metrics";
ResetPersistentMetrics(&key);
} else {
DLOG(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.
err = key.SetValue(kLastTransmissionTimeValueName, REG_DWORD,
&now, sizeof(now));
return report_result;
}
return false;
}
// Used primarily for testing. Default functionality.
bool StatsUploader::UploadMetrics(const char* extra_url_data,
const char* user_agent,
const char *content) {
return stats_report::UploadMetrics(extra_url_data, user_agent, content);
}
} // namespace stats_report
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