Viewing file:  ProcOpenBasedFinder.php (2.48 KB) -rw-r--r--
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<?php
/*
* This file is part of the Fidry CPUCounter Config package.
*
* (c) Théo FIDRY <theo.fidry@gmail.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
declare(strict_types=1);
namespace Fidry\CpuCoreCounter\Finder;
use Fidry\CpuCoreCounter\Executor\ProcessExecutor;
use Fidry\CpuCoreCounter\Executor\ProcOpenExecutor;
use function filter_var;
use function function_exists;
use function is_int;
use function sprintf;
use function trim;
use const FILTER_VALIDATE_INT;
use const PHP_EOL;
abstract class ProcOpenBasedFinder implements CpuCoreFinder
{
/**
* @var ProcessExecutor
*/
private $executor;
public function __construct(?ProcessExecutor $executor = null)
{
$this->executor = $executor ?? new ProcOpenExecutor();
}
public function diagnose(): string
{
if (!function_exists('proc_open')) {
return 'The function "proc_open" is not available.';
}
$command = $this->getCommand();
$output = $this->executor->execute($command);
if (null === $output) {
return sprintf(
'Failed to execute the command "%s".',
$command
);
}
[$stdout, $stderr] = $output;
$failed = '' !== trim($stderr);
return $failed
? sprintf(
'Executed the command "%s" which wrote the following output to the STDERR:%s%s',
$command,
PHP_EOL,
$stderr
)
: sprintf(
'Executed the command "%s" and got the following (STDOUT) output:%s%s',
$command,
PHP_EOL,
$stdout
);
}
/**
* @return positive-int|null
*/
public function find(): ?int
{
$output = $this->executor->execute($this->getCommand());
if (null === $output) {
return null;
}
[$stdout, $stderr] = $output;
$failed = '' !== trim($stderr);
return $failed
? null
: $this->countCpuCores($stdout);
}
/**
* @internal
*
* @return positive-int|null
*/
protected function countCpuCores(string $process): ?int
{
$cpuCount = filter_var($process, FILTER_VALIDATE_INT);
return is_int($cpuCount) && $cpuCount > 0 ? $cpuCount : null;
}
abstract protected function getCommand(): string;
}
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