/**
* Get the values of a metric
*
* @param int $metricId The metric id
* @return array
*/
public function getValues($metricId, $rows = 100)
{
$rrdFile = $this->rrdPath . '/' . $metricId . '.rrd';
if (file_exists($rrdFile)) {
$options = array('--start', $this->startTime, '--end', $this->endTime, '--maxrows', $rows, 'DEF:metric=' . $rrdFile . ':value:AVERAGE', 'XPORT:metric:"Values"');
$values = rrd_xport($options);
if (false === $values) {
throw new \Exception("Error when getting metric values");
}
return $values['data'][0]['data'];
} else {
throw new \Exception("rrd file " . $rrdFile . " doesn't exist");
}
}
function do_xport($start, $end, $step, $filename, $testnet = false)
{
if ($testnet) {
$testnet = "testnet";
} else {
$testnet = '';
}
xecho("RRD DB xport ({$start} to {$end} step {$step} {$testnet}): ");
$xport = rrd_xport(array("-s", $start, "-e", $end, "--step", $step, "DEF:a=mnvotes2{$testnet}.rrd:Yea:MAX", "DEF:b=mnvotes2{$testnet}.rrd:Nay:MAX", "DEF:c=mnvotes2{$testnet}.rrd:Abstain:MAX", 'XPORT:a:Yea', 'XPORT:b:Nay', 'XPORT:c:Abstain'));
if ($xport === false) {
echo "Failed!\n";
return false;
} else {
echo "OK\n";
foreach ($xport["data"] as $key1 => $data1) {
foreach ($xport["data"][$key1]["data"] as $key2 => $data2) {
if (is_nan($data2)) {
$xport["data"][$key1]["data"][$key2] = false;
} else {
$xport["data"][$key1]["data"][$key2] = intval(round($data2));
}
}
}
}
xecho("JSON Encoding output: ");
$json = json_encode($xport);
if ($json !== false) {
echo "OK (" . strlen($json) . " bytes)\n";
xecho("Writing to file: ");
if (file_put_contents($filename, $json) !== false) {
echo "OK\n";
return true;
} else {
echo "Error\n";
return false;
}
} else {
echo "Error\n";
return false;
}
}
