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<?php |
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namespace Innmind\ProvisionerBundle; |
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use Innmind\ProvisionerBundle\Server\ServerInterface; |
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/** |
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* Holds informations about a process througthout a symfony runtime |
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*/ |
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class ProcessStatusHandler |
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{ |
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const COMPUTE_ITERATIONS = 3; |
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const ITERATIONS_SLEEP = 2; |
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protected $informations = []; |
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protected $server; |
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protected $usePrecision = true; |
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/** |
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* Set the server helper |
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* |
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* @param ServerInterface $server |
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*/ |
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public function setServer(ServerInterface $server) |
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{ |
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$this->server = $server; |
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} |
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/** |
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* Whether to run compute multiple times cpu usage |
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* to get a better approximation or not |
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* |
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* @param bool $use |
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*/ |
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public function setUsePrecision($use) |
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{ |
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$this->usePrecision = (bool) $use; |
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} |
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/** |
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* Return the number of process running for the givent command |
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* |
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* @param string $command |
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* |
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* @return int |
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*/ |
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View Code Duplication |
public function getProcessCount($command) |
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{ |
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$hash = $this->getKey($command); |
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if (!isset($this->informations[$hash])) { |
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$this->computeProcessInformations($command); |
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} |
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return $this->informations[$hash]['number']; |
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} |
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/** |
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* Return the average CPU usage for the given command |
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* |
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* @param string $command |
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* |
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* @return float |
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*/ |
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View Code Duplication |
public function getProcessUsage($command) |
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{ |
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$hash = $this->getKey($command); |
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if (!isset($this->informations[$hash])) { |
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$this->computeProcessInformations($command); |
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} |
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return $this->informations[$hash]['usage']; |
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} |
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/** |
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* Compute the process usage/number for the given command |
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* |
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* @param string $command |
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*/ |
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protected function computeProcessInformations($command) |
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{ |
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$averageProcessUsage = 0; |
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$averageProcessNumber = 0; |
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$iterations = $this->usePrecision ? self::COMPUTE_ITERATIONS : 1; |
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for ($i = 0; $i < $iterations; $i++) { |
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$averageProcessUsage += $this->server->getProcessUsage($command); |
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$averageProcessNumber += $this->server->getProcessCount($command); |
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if ($this->usePrecision === true) { |
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sleep(self::ITERATIONS_SLEEP); |
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} |
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} |
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$averageProcessUsage = $averageProcessUsage / $iterations; |
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$averageProcessNumber = floor($averageProcessNumber / $iterations); |
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$this->informations[$this->getKey($command)] = [ |
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'usage' => (float) $averageProcessUsage, |
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'number' => (int) $averageProcessNumber |
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]; |
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} |
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/** |
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* Return a unique key for the given command |
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* |
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* @param string $command |
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* |
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* @return string |
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*/ |
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protected function getKey($command) |
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{ |
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return md5($command); |
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} |
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} |
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Innmind /
ProvisionerBundle
