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<?php |
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namespace Filesystem; |
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use Symfony\Component\Process\Exception\ProcessFailedException; |
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use Symfony\Component\Process\Process; |
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/** |
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* Subprocess class. |
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* |
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* @package Filesystem |
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*/ |
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class Subprocess |
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{ |
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/** |
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* Stream STDOUT and/or STDERR to file. |
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* |
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* @var int |
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*/ |
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const STREAM_FILE = 1; |
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/** |
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* Stream STDOUT and/or STDERR to STDOUT. |
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* |
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* @var int |
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*/ |
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const STREAM_STDOUT = 2; |
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/** |
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* Stream STDOUT and/or STDERR to file and STDOUT. |
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* |
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* @var int |
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*/ |
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const STREAM_BOTH = 3; |
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/** |
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* Stream STDOUT and/or STDERR to STDOUT (wait for process to finish). |
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* |
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* @var int |
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*/ |
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const STREAM_STDOUT_WAIT = 4; |
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/** |
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* Stream STDOUT and/or STDERR to STDOUT (interactive mode). |
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* |
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* @var int |
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*/ |
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const STREAM_STDOUT_TTY = 5; |
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/** |
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* Constructor. |
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* |
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* @return void |
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*/ |
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public function __contruct() |
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{ |
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} |
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/** |
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* Initiate subprocess. |
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* |
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* @param mixed $cmd command(s) being executed |
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* @param boolean $stream whether or not to stream results to console |
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* @param boolean $fail_on_error whether or not to fail on error or pass |
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* @param mixed $stdoutfile STDOUT file for output or NULL |
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* @param mixed $stderrfile STDERR file for output or NULL |
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* @return array STDOUT, STDERR and RETVAL or just RETVAL if streamed |
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*/ |
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final public function subprocess($cmd, $stream = self::STREAM_STDOUT_WAIT, $fail_on_error = false, $stdoutfile = null, $stderrfile = null) |
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{ |
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$process = new Process($cmd); |
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$process->setTimeout(3600); |
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$process->setIdleTimeout(3600); |
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switch ($stream) |
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{ |
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case '1': |
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return $this->stream_to_file($process, $stdoutfile, $stderrfile); |
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case '2': |
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return $this->stream_to_stdout($process); |
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case '3': |
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return $this->stream_to_both($process, $stdoutfile, $stderrfile); |
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case '4': |
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return $this->stream_stdout_wait($process, $fail_on_error); |
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case '5': |
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return $this->stream_stdout_tty($process); |
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} |
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} |
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/** |
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* Stream STDOUT and/or STDERR to console. |
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* |
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* @param object $process process object |
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* @param string $stdoutfile STDOUT file for output |
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* @param string $stderrfile STDERR file for output |
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* @return array |
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*/ |
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final protected function stream_to_file(Process $process, $stdoutfile, $stderrfile) |
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{ |
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if (!isset($stdoutfile)) |
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{ |
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throw new \RuntimeException("Missing output file for STDOUT stream."); |
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} |
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$GLOBALS['stdoutfile'] = $stdoutfile; |
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$GLOBALS['stderrfile'] = $stderrfile; |
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$process->run(function($type, $buffer) |
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{ |
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if (Process::ERR === $type) |
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{ |
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if ($GLOBALS['stderrfile'] !== null) |
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{ |
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file_put_contents($GLOBALS['stderrfile'], $buffer, FILE_APPEND | LOCK_EX); |
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} |
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else |
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{ |
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file_put_contents($GLOBALS['stdoutfile'], $buffer, FILE_APPEND | LOCK_EX); |
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} |
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} |
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else |
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{ |
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file_put_contents($GLOBALS['stdoutfile'], $buffer, FILE_APPEND | LOCK_EX); |
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} |
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}); |
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return $this->get_process_info($process); |
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} |
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/** |
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* Stream STDOUT and STDERR to console. |
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* |
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* @param object $process process object |
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* @return array |
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*/ |
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final protected function stream_to_stdout(Process $process) |
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{ |
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$process->run(function($type, $buffer) { |
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if (Process::ERR === $type) |
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{ |
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fwrite(STDERR, $buffer); |
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} |
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if (Process::ERR !== $type) |
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{ |
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fwrite(STDOUT, $buffer); |
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} |
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}); |
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return $this->get_process_info($process); |
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} |
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/** |
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* Stream STDOUT and STDERR to console. |
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* |
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* @param object $process Process object |
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* @param string $stdoutfile STDOUT file for output |
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* @param string $stderrfile STDERR file for output |
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* @return array |
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*/ |
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final protected function stream_to_both(Process $process, $stdoutfile, $stderrfile) |
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{ |
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if (!isset($stdoutfile)) |
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{ |
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throw new \RuntimeException("Missing output file for STDOUT stream."); |
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} |
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$GLOBALS['stdoutfile'] = $stdoutfile; |
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$GLOBALS['stderrfile'] = $stderrfile; |
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$process->run(function($type, $buffer) { |
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if (Process::ERR === $type) |
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{ |
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if ($GLOBALS['stderrfile'] !== null) |
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{ |
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file_put_contents($GLOBALS['stderrfile'], $buffer, FILE_APPEND | LOCK_EX); |
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} |
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if ($GLOBALS['stderrfile'] === null) |
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{ |
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file_put_contents($GLOBALS['stdoutfile'], $buffer, FILE_APPEND | LOCK_EX); |
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} |
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fwrite(STDERR, $buffer); |
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} |
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if (Process::ERR !== $type) |
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{ |
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file_put_contents($GLOBALS['stdoutfile'], $buffer, FILE_APPEND | LOCK_EX); |
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fwrite(STDOUT, $buffer); |
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} |
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}); |
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return $this->get_process_info($process); |
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} |
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/** |
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* Wait for process to finish and return. |
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* |
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* @param object $process process object |
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* @param boolean $fail_on_error whether or not to fail on error or pass |
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* @return array |
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*/ |
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final protected function stream_stdout_wait(Process $process, $fail_on_error) |
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{ |
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$process->run(); |
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if ($fail_on_error && !$process->isSuccessful()) |
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{ |
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throw new ProcessFailedException($process); |
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} |
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return $this->get_process_info($process); |
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} |
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/** |
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* Stream STDOUT and STDERR to console (interactive mode). |
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* |
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* @param object $process process object |
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* @return array |
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*/ |
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final protected function stream_stdout_tty(Process $process) |
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{ |
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$process->setTty(true); |
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$process->start(); |
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$process->wait(); |
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return $this->get_process_info($process); |
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} |
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/** |
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* Returns process information. |
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* |
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* @param object $process process object |
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* @return array |
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*/ |
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final protected function get_process_info(Process $process) |
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{ |
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$cmd_executed = $process->getCommandLine(); |
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$stdout = $process->getOutput(); |
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$stderr = $process->getErrorOutput(); |
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$return_value = $process->getExitCode(); |
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$return_value_text = $process->getExitCodeText(); |
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return [ |
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'command' => $cmd_executed, |
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'stdout' => $stdout, |
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'stderr' => $stderr, |
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'error_code' => [$return_value, $return_value_text] |
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]; |
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} |
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} |
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