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<?php |
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/** |
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* Created by PhpStorm. |
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* User: Petrica |
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* Date: 3/22/2016 |
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* Time: 22:45 |
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*/ |
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namespace Petrica\StatsdSystem\Command; |
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use Domnikl\Statsd\Client; |
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use Domnikl\Statsd\Connection\UdpSocket; |
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use Petrica\StatsdSystem\Gauge\CpuAverageGauge; |
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use Petrica\StatsdSystem\Gauge\GaugeInterface; |
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use Symfony\Component\Console\Command\Command; |
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use Symfony\Component\Console\Input\InputArgument; |
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use Symfony\Component\Console\Input\InputInterface; |
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use Symfony\Component\Console\Input\InputOption; |
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use Symfony\Component\Console\Output\OutputInterface; |
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class NotifyCommand extends Command |
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{ |
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/** |
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* @var Client |
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*/ |
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protected $statsd = null; |
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/** |
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* Instantiated gauges |
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* |
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* @var array |
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*/ |
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protected $gauges = null; |
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protected function configure() |
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{ |
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$this |
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->setName('statsd:notify') |
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->setDescription('Collect and send defined gauges to statsd server') |
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->addArgument( |
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'gauges-class', |
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InputArgument::REQUIRED, |
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'PHP class name of gauges separate by comma eg: Petrica\StatsdSystem\Gauge\CpuAverageGauge,Petrica\StatsdSystem\Gauge\MemoryGauge' |
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) |
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->addOption( |
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'statsd-host', |
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null, |
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InputOption::VALUE_OPTIONAL, |
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'Statsd server hostname', |
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'localhost' |
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) |
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->addOption( |
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'statsd-port', |
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null, |
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InputOption::VALUE_OPTIONAL, |
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'Statsd server port', |
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'8125' |
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) |
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->addOption( |
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'statsd-namespace', |
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null, |
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InputOption::VALUE_OPTIONAL, |
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'Gauge namespace sent to statsd', |
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'system' |
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) |
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->addOption( |
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'iterations', |
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null, |
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InputOption::VALUE_OPTIONAL, |
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'The number of times the job collects stats and sends them to statsd server before exiting.', |
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3600 |
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); |
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} |
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/** |
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* @param InputInterface $input |
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* @param OutputInterface $output |
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*/ |
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protected function execute(InputInterface $input, OutputInterface $output) |
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{ |
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$gauges = $this->getGauges($input); |
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$statsd = $this->getStatsd($input); |
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$iterations = $input->getOption('iterations'); |
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$count = 0; |
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while($count < $iterations) |
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{ |
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foreach($gauges as $gauge) { |
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// Sampling period attained for current gauge? |
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if (fmod($count, $gauge->getSamplingPeriod()) == 0) { |
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$value = $gauge->getValue(); |
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if (null !== $value) { |
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$statsd->gauge($gauge->getPath(), $value); |
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} |
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if ($input->getOption('verbose')) { |
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$output->writeln(sprintf('%s: %s', $gauge->getPath(), $gauge->getValue())); |
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} |
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} |
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} |
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sleep(1); |
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$count ++; |
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} |
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} |
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/** |
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* Statically cache statsd client and return a statsd client |
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* |
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* @param InputInterface $input |
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* @return Client |
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*/ |
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protected function getStatsd(InputInterface $input) |
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{ |
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if (null === $this->statsd) { |
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$connection = new UdpSocket( |
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$input->getOption('statsd-host'), |
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$input->getOption('statsd-port') |
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); |
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$this->statsd = new Client( |
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$connection, |
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$input->getOption('statsd-namespace') |
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); |
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} |
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return $this->statsd; |
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} |
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/** |
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* Instantiate selected gauges |
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* |
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* @param InputInterface $input |
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* @return GaugeInterface[] array |
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*/ |
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public function getGauges(InputInterface $input) |
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{ |
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if (null === $this->gauges) { |
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$this->gauges = array(); |
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$proprietaryPrefix = 'Petrica\StatsdSystem\Gauge'; |
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$classes = explode(',', $input->getArgument('gauges-class')); |
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foreach ($classes as $class) { |
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$class = trim($class); |
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$proprietaryClass = $proprietaryPrefix . '\\' . $class; |
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if (class_exists($proprietaryClass)) { |
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$class = $proprietaryClass; |
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} |
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if (class_exists($class) && |
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in_array('Petrica\StatsdSystem\Gauge\GaugeInterface', class_implements($class))) { |
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$this->gauges[] = new $class(); |
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} |
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} |
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if (empty($this->gauges)) { |
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throw new \RuntimeException( |
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sprintf('No gauges found for provided string %s', $input->getArgument('gauges-class')) |
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); |
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} |
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} |
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return $this->gauges; |
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} |
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} |
petrica /
php-statsd-system
