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<?php |
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namespace CyberLine\SystemdState; |
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use CyberLine\SystemdState\Types\AbstractType; |
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use CyberLine\SystemdState\Types\TypesInterface; |
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class SystemdState |
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{ |
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private static $command = '/bin/systemctl show %s --no-pager'; |
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private $services = []; |
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private $reports = []; |
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/** |
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* SystemdState constructor. |
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* @param array $services |
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*/ |
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public function __construct(array $services = []) |
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{ |
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array_walk($services, [$this, 'addCheckUnit']); |
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} |
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/** |
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* @param string $name |
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* @return SystemdState |
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*/ |
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public function addCheckUnit(string $name): self |
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{ |
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$this->services[] = escapeshellcmd($name); |
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return $this; |
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} |
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public function addAllUnits(): self |
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{ |
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$this->addCheckUnit('*'); |
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return $this; |
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} |
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/** |
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* @return array |
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*/ |
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public function getSystemdInfo() |
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{ |
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$this->addCheckUnit(''); |
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return $this->getReport('systemd'); |
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} |
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/** |
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* @param string|null $unitName |
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* @return array |
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*/ |
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public function getReport(?string $unitName = null): array |
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{ |
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if (empty($this->reports)) { |
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$this->checkState(); |
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} |
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if (!$unitName) { |
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return $this->reports; |
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} |
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if (array_key_exists($unitName, $this->reports)) { |
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return [$this->reports[$unitName]]; |
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} |
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$retval = []; |
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foreach (TypesInterface::ALLOWED_TYPES as $suffix) { |
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$tempName = $unitName . '.' . $suffix; |
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if (array_key_exists($tempName, $this->reports)) { |
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$retval[$tempName] = $this->reports[$tempName]; |
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// Don't break here, as we can have the same unit in different types (e.g. service and timer) |
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} |
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} |
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if (count($retval)) { |
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return $retval; |
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} |
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throw new \RangeException(sprintf('No report found for `%s`. Maybe misspelled?', $unitName)); |
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} |
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/** |
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* @param String $string |
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* @return SystemdState |
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*/ |
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public function checkFromString(String $string): self |
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{ |
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$explode = explode(PHP_EOL . PHP_EOL, $string); |
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if (count($explode) < 1 || strlen($string) === 0) { |
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throw new \InvalidArgumentException('Invalid payload passed to ' . __FUNCTION__); |
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} |
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array_walk($explode, [$this, 'handleServiceResponse']); |
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return $this; |
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} |
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private function checkState(): void |
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{ |
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if (!count($this->services)) { |
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throw new \InvalidArgumentException('You have to add at least one unit to check!'); |
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} |
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$command = sprintf(self::$command, implode(' ', $this->services)); |
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$exec = shell_exec($command); |
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if ($exec === null) { |
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throw new \RuntimeException(sprintf('There was an error executing the command: `%s`', $command)); |
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} |
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$this->checkFromString($exec); |
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} |
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/** |
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* @param string $service |
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*/ |
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private function handleServiceResponse(string $service): void |
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{ |
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$split = explode(PHP_EOL, $service); |
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$type = TypesInterface::TYPE_SYSTEMD; |
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preg_match('/Id=(?<name>.*)/m', $service, $matches); |
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if (!empty($matches)) { |
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$explode = explode('.', $matches['name']); |
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$type = $explode[count($explode) - 1]; |
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} |
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if (!in_array($type, TypesInterface::ALLOWED_TYPES)) { |
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throw new \RuntimeException(sprintf('Type `%s` is not a valid / known type.', $type)); |
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} |
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$className = __NAMESPACE__ . '\\Types\\' . ucfirst($type); |
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/** @var AbstractType $type */ |
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$type = new $className(); |
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array_walk($split, [$this, 'handleLine'], $type); |
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$this->reports[$type->getId()] = $type; |
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} |
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/** |
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* @param string $line |
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* @param int $key |
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* @param TypesInterface $type |
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*/ |
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private function handleLine(string $line, int $key, TypesInterface $type): void |
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{ |
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$explode = explode('=', $line); |
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$propertyName = $explode[0]; |
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if (empty($propertyName)) { |
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return; |
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} |
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if (!property_exists($type, $propertyName)) { |
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throw new \RuntimeException( |
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sprintf( |
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'Property `%s` is not known to me. Please fill a Bug report!' . PHP_EOL . 'Info: `%s`', |
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$propertyName, |
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$line |
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) |
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); |
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} |
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$type->{'set' . $propertyName}(Parser::parseValueByContent($explode)); |
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} |
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} |
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CyberLine /
systemd-state
