public function sendMetrics()
{
$metricsKeys = Di::getCache()->getKeys(MetricsCache::getCacheKeySearchLatencyPattern());
$metricsCache = new MetricsCache();
$cachedMetrics = array();
foreach ($metricsKeys as $key) {
$metricName = MetricsCache::getMetricNameFromKey($key);
$metricBucket = MetricsCache::getBucketFromKey($key);
if (!isset($cachedMetrics[$metricName]) || !is_array($cachedMetrics[$metricName])) {
//initialization latency butckets
$maxBucket = Latency::getBucketForLatencyMicros(Latency::MAX_LATENCY);
$cachedMetrics[$metricName] = array_fill(0, $maxBucket + 1, 0);
}
$cachedMetrics[$metricName][$metricBucket] = $metricsCache->getLatencyAndReset($key);
}
$dataset = array();
foreach ($cachedMetrics as $name => $latencies) {
$dataset[] = array('name' => $name, 'latencies' => $latencies);
}
//Sending Metrics dataset.
$response = $this->post($this->servicePath, $dataset);
if ($response->isSuccessful()) {
Di::getLogger()->info(count($dataset) . " Metrics sent successfuly");
} else {
Di::getLogger()->error("Metrics have not been sent successfully");
Di::getLogger()->error("HTTP Code: " . $response->getStatusCode());
Di::getLogger()->error("HTTP Body: " . $response->getBody());
}
}