/**
* Check if resource is available.
*
* @param ContainerInterface $container Current container.
* @param LibraryDefinitionInterface $definition Current definition.
* @param ResourceInterface $resource Current resource.
* @throws UnavailableResourceException
* @throws RuntimeException
*/
public function checkResourceAvailability(ContainerInterface $container, LibraryDefinitionInterface $definition, ResourceInterface $resource)
{
if ($this->options['check_availability']) {
if ($resource instanceof FileResource && $this->options['check_availability']['file_resource']) {
if (!@file_exists($resource->getSource())) {
throw new UnavailableResourceException(sprintf('File resource "%s" does not exists.', $resource->getSource()));
}
if (!@is_file($resource->getSource())) {
throw new UnavailableResourceException(sprintf('File resource "%s" is not file.', $resource->getSource()));
}
if (!@is_readable($resource->getSource())) {
throw new UnavailableResourceException(sprintf('File resource "%s" is not readable.', $resource->getSource()));
}
} elseif ($resource instanceof GlobResource && $this->options['check_availability']['glob_resource']) {
$files = $resource->getFiles();
if (count($files) == 0) {
throw new InvalidArgumentException(sprintf('Glob resource "%s" yields no results.', $resource->getSource()));
}
foreach ($files as $file) {
if (!@file_exists($file)) {
throw new UnavailableResourceException(sprintf('Glob "%s" resulting file "%s" does not exists.', $resource->getSource(), $file));
}
if (!@is_file($file)) {
throw new UnavailableResourceException(sprintf('Glob "%s" result "%s" is not file.', $resource->getSource(), $file));
}
if (!@is_readable($file)) {
throw new UnavailableResourceException(sprintf('Glob "%s" resulting file "%s" is not readable.', $resource->getSource(), $file));
}
}
} elseif ($resource instanceof HttpResource && $this->options['check_availability']['http_resource']) {
if (strpos($url = $resource->getSource(), '//') === 0) {
$url = 'http:' . $url;
} elseif (strpos($url, '://') === false) {
throw new InvalidArgumentException(sprintf('Http resource "%s" is not valid.', $resource->getSource()));
}
if (@file_get_contents($url, false, stream_context_create(array('http' => array('method' => 'HEAD')))) === false) {
throw new UnavailableResourceException(sprintf('Http resource "%s" is not available.', $resource->getSource()));
}
} elseif ($resource instanceof ReferenceResource && $this->options['check_availability']['reference_resource']) {
if (!$container->getLibraries()->hasDefinition($resource->getSource())) {
throw new UnavailableResourceException(sprintf('Reference resource "%s" references to non-existing library.', $resource->getSource()));
}
} elseif ($resource instanceof StringResource) {
// Always available
} else {
throw new RuntimeException(sprintf('Unable to determine resource availability of instance of "%s".', get_class($resource)));
}
}
}
