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<?php declare(strict_types = 1); |
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namespace Churn\Process\Handler; |
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use Churn\Process\ChurnProcess; |
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use Churn\Process\Observer\OnSuccess; |
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use Churn\Process\ProcessFactory; |
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use Churn\Result\Result; |
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use Churn\Values\File; |
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use function count; |
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use Generator; |
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class ParallelProcessHandler implements ProcessHandler |
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{ |
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/** |
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* Array of completed processes. |
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* @var array |
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*/ |
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private $completedProcesses; |
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/** |
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* Number of parallel jobs to run. |
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* @var integer |
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*/ |
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private $numberOfParallelJobs; |
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/** |
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* ProcessManager constructor. |
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* @param int $numberOfParallelJobs Number of parallel jobs to run. |
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*/ |
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public function __construct(int $numberOfParallelJobs) |
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{ |
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$this->numberOfParallelJobs = $numberOfParallelJobs; |
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} |
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/** |
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* Run the processes to gather information. |
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* @param Generator $filesFinder Collection of files. |
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* @param ProcessFactory $processFactory Process Factory. |
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* @param OnSuccess $onSuccess The OnSuccess event observer. |
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* @return void |
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*/ |
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public function process( |
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Generator $filesFinder, |
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ProcessFactory $processFactory, |
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OnSuccess $onSuccess |
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): void { |
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$pool = []; |
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$this->completedProcesses = []; |
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foreach ($filesFinder as $file) { |
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while (count($pool) >= $this->numberOfParallelJobs) { |
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$this->checkRunningProcesses($pool, $onSuccess); |
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} |
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$this->addToPool($pool, $file, $processFactory); |
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} |
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while (count($pool) > 0) { |
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$this->checkRunningProcesses($pool, $onSuccess); |
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} |
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} |
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/** |
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* @param ChurnProcess[] $pool Pool of processes. |
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* @param OnSuccess $onSuccess The OnSuccess event observer. |
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* @return void |
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*/ |
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private function checkRunningProcesses(array &$pool, OnSuccess $onSuccess): void |
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{ |
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foreach ($pool as $key => $process) { |
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if ($process->isSuccessful()) { |
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unset($pool[$key]); |
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$this->sendEventIfComplete($this->getResult($process), $onSuccess); |
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} |
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} |
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} |
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/** |
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* @param ChurnProcess[] $pool Pool of processes. |
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* @param File $file The file to process. |
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* @param ProcessFactory $processFactory Process Factory. |
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* @return void |
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*/ |
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private function addToPool(array &$pool, File $file, ProcessFactory $processFactory): void |
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{ |
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$process = $processFactory->createGitCommitProcess($file); |
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$process->start(); |
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$pool[$process->getKey()] = $process; |
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$process = $processFactory->createCyclomaticComplexityProcess($file); |
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$process->start(); |
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$pool[$process->getKey()] = $process; |
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} |
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/** |
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* Returns the result of processes for a file. |
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* @param ChurnProcess $process A successful process. |
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* @return Result |
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*/ |
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private function getResult(ChurnProcess $process): Result |
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{ |
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if (!isset($this->completedProcesses[$process->getFileName()])) { |
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$this->completedProcesses[$process->getFileName()] = new Result($process->getFileName()); |
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} |
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$result = $this->completedProcesses[$process->getFileName()]; |
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switch ($process->getType()) { |
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case 'GitCommitProcess': |
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$result->setCommits((int) $process->getOutput()); |
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break; |
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case 'CyclomaticComplexityProcess': |
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$result->setComplexity((int) $process->getOutput()); |
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break; |
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default: |
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// nothing to do |
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break; |
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} |
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return $result; |
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} |
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/** |
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* @param Result $result The result of the processes for a file. |
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* @param OnSuccess $onSuccess The OnSuccess event observer. |
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* @return void |
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*/ |
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private function sendEventIfComplete(Result $result, OnSuccess $onSuccess): void |
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{ |
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if ($result->isComplete()) { |
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unset($this->completedProcesses[$result->getFile()]); |
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$onSuccess($result); |
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} |
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} |
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} |
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bmitch /
churn-php
