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<?php |
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/** |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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* |
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* @author Nikita Vershinin <[email protected]> |
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* @license MIT |
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*/ |
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namespace OpenStackStorage; |
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/** |
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* Storage data representing an object, (metadata and data). |
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*/ |
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class Obj |
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{ |
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/** |
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* Container object. |
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* |
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* @var \OpenStackStorage\Container |
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*/ |
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protected $container = null; |
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/** |
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* Object name. |
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* |
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* @var string |
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*/ |
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protected $name = null; |
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/** |
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* The object's MIME-type. |
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* |
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* @var string |
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*/ |
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protected $contentType = null; |
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/** |
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* The object size (in bytes). |
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* |
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* @var integer |
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*/ |
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protected $size = null; |
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/** |
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* Date and time of last file modification. |
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* |
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* @var \DateTime |
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*/ |
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protected $lastModified = null; |
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/** |
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* Object's etag. |
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* |
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* @var string |
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*/ |
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protected $etag = null; |
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/** |
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* Metadata. |
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* |
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* @var array |
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*/ |
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protected $metadata = array(); |
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/** |
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* Headers. |
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* |
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* @var array |
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*/ |
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protected $headers = array(); |
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/** |
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* Manifest, used when working with big file. |
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* |
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* @var string |
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*/ |
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protected $manifest = null; |
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/** |
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* The class constructor. |
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* |
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* Storage objects rarely if ever need to be instantiated directly by |
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* the user. |
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* |
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* Instead, use the \OpenStackStorage\Container object methods: |
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* <code> |
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* $container->createObject('test.txt'); |
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* $container->getObject('test.txt'); |
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* $container->getObjects('test.txt'); |
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* </code> |
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* |
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* @param \OpenStackStorage\Container $container |
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* @param string $name |
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* @param boolean $forceExists |
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* @param array $object |
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* @throws \OpenStackStorage\Exceptions\NoSuchObject |
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*/ |
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public function __construct(Container $container, $name = null, $forceExists = false, array &$object = array()) |
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{ |
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$this->container = $container; |
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if (!empty($object)) { |
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$this->name = $object['name']; |
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$this->contentType = $object['content_type']; |
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$this->size = $object['bytes']; |
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$this->lastModified = $object['last_modified']; |
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$this->etag = $object['hash']; |
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} else { |
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$this->name = $name; |
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if (!$this->initialize() && $forceExists) { |
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throw new Exceptions\NoSuchObject(); |
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} |
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} |
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} |
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/** |
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* Set the value of property $name. |
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* |
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* @param string $name |
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*/ |
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public function setName($name) |
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{ |
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$this->name = $name; |
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} |
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/** |
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* Return the value of the $name property. |
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* |
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* @return string |
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*/ |
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public function getName() |
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{ |
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return $this->name; |
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} |
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/** |
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* Set the value of property $contentType. |
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* |
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* @param string $contentType |
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*/ |
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public function setContentType($contentType) |
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{ |
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$this->contentType = $contentType; |
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} |
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/** |
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* Return the value of the $contentType property. |
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* |
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* @return string |
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*/ |
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public function getContentType() |
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{ |
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return $this->contentType; |
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} |
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/** |
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* Set the value of property $metadata. |
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* |
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* @param array $metadata |
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*/ |
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public function setMetadata(array $metadata = array()) |
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{ |
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$this->metadata = $metadata; |
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} |
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/** |
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* Return the value of the $metadata property. |
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* |
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* @return array |
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*/ |
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public function getMetadata() |
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{ |
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return $this->metadata; |
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} |
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/** |
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* Set the value of property $headers. |
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* |
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* @param array $headers |
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*/ |
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public function setHeaders(array $headers = array()) |
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{ |
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$this->headers = $headers; |
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} |
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/** |
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* Return the value of the $headers property. |
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* |
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* @return array |
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*/ |
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public function getHeaders() |
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{ |
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return $this->headers; |
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} |
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/** |
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* Set the value of property $manifest. |
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* |
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* @param string $manifest |
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*/ |
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public function setManifest($manifest) |
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{ |
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$this->manifest = $manifest; |
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} |
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/** |
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* Return the value of the $manifest property. |
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* |
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* @return string |
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*/ |
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public function getManifest() |
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{ |
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return $this->manifest; |
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} |
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/** |
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* Returns the object size in bytes. |
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* |
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* @return integer |
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*/ |
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public function getSize() |
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{ |
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return $this->size; |
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} |
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/** |
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* Read the content from the remote storage object. |
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* |
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* By default this method will buffer the response in memory and |
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* return it as a string. However, if a \SplFileObject object is passed |
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* in $buffer, the response will be written to it instead. |
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* |
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* @param integer $size combined with offset, defines the length |
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* of data to be read |
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* @param integer $offset combined with size, defines the start |
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* location to be read |
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* @param array $headers |
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* @param \SplFileObject $buffer |
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* @return null|string |
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*/ |
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public function read($size = -1, $offset = 0, array $headers = array(), \SplFileObject $buffer = null) |
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{ |
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$this->validateName(); |
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if ($size > 0) { |
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$headers['Range'] = sprintf( |
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'bytes=%d-%d', |
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$offset, |
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($offset + $size) - 1 |
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); |
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} |
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$response = $this->container->getConnection()->makeRequest( |
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Client::GET, |
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array($this->container->getName(), $this->name), |
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$headers |
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); |
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if (null !== $buffer) { |
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$buffer->fwrite($response['body']); |
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return null; |
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} else { |
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return $response['body']; |
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} |
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} |
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/** |
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* Save the contents of the object to filename. |
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* |
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* @param string $filename |
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*/ |
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public function saveToFilename($filename) |
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{ |
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$buffer = new \SplFileObject($filename, 'wb'); |
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$this->read(-1, 0, array(), $buffer); |
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} |
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/** |
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* Write data to the remote storage system. |
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* The $source may be one the following: |
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* — resource |
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* — \SplFileObject instance |
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* — scalar (string) |
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* — null (can be used to create directories when |
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* $contentType = 'application/directory') |
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* |
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* @param mixed $data |
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* @param string $contentType |
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* @param integer $filesize |
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* @throws \OpenStackStorage\Exceptions\Error |
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*/ |
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public function write($data, $contentType = null, $filesize = null) |
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{ |
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$this->validateName(); |
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$path = null; |
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if (is_resource($data)) { |
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$meta = stream_get_meta_data($data); |
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if (!$contentType) { |
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$path = $meta['uri']; |
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} |
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if (!$filesize) { |
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$this->size = filesize($meta['uri']); |
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} |
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$data = stream_get_contents($data); |
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} elseif (is_object($data) && $data instanceof \SplFileObject) { |
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$this->size = $data->getSize(); |
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$path = $data->getType(); |
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$tmp = ''; |
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while (!$data->eof()) { |
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$tmp .= $data->fgets(); |
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} |
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$data = &$tmp; |
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} else { |
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$data = strval($data); |
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$this->size = strlen($data); |
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} |
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if ((null === $contentType) && (null !== $path) && is_readable($path)) { |
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$contentType = finfo_file( |
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finfo_open(FILEINFO_MIME_TYPE), |
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$path, |
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FILEINFO_MIME_TYPE |
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); |
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} |
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$this->contentType = (!$contentType |
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? 'application/octet-stream' |
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: $contentType); |
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$connection = $this->container->getConnection(); |
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$headers = array_merge( |
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array( |
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'X-Auth-Token' => $connection->getAuthToken(), |
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), |
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$this->getNewHeaders() |
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); |
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unset($headers['ETag']); |
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$response = $connection->makeRequest( |
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Client::PUT, |
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array($this->container->getName(), $this->name), |
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$headers, |
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$data |
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); |
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$this->etag = $response['headers']['etag']; |
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} |
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/** |
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* Commits the metadata and custom headers to the remote storage system. |
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* |
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* Example: |
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* <code> |
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* $object = $container->getObject('paradise_lost.pdf); |
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* $object->setMetadata(array('author' => 'John Milton')); |
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* $object->setHeaders(array('content-disposition' => 'foo')); |
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* $object->syncMetadata(); |
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* </code> |
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* |
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* @throws \OpenStackStorage\Exceptions\ResponseError |
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*/ |
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public function syncMetadata() |
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{ |
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$this->validateName(); |
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if (!empty($this->metadata) || !empty($this->headers)) { |
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$headers = $this->getNewHeaders(); |
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$headers['Content-Length'] = '0'; |
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$response = $this->container->getConnection()->makeRequest( |
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Client::POST, |
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array($this->container->getName(), $this->name), |
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$headers |
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); |
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if (202 != $response['status']) { |
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throw new Exceptions\ResponseError($response); |
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} |
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} |
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} |
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/** |
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* Commits the manifest to the remote storage system. |
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* |
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* Example: |
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* <code> |
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* $object = $container->getObject('paradise_lost.pdf); |
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* $object->setManifest('container/prefix'); |
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* $object->syncManifest(); |
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* </code> |
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*/ |
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public function syncManifest() |
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{ |
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$this->validateName(); |
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|
404
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if ($this->manifest) { |
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$headers = $this->getNewHeaders(); |
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$headers['Content-Length'] = '0'; |
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|
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$this->container->getConnection()->makeRequest( |
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Client::PUT, |
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|
|
array($this->container->getName(), $this->name), |
411
|
|
|
$headers |
412
|
|
|
); |
413
|
|
|
} |
414
|
|
|
} |
415
|
|
|
|
416
|
|
|
/** |
417
|
|
|
* Return the URI for this object, if its container is public. |
418
|
|
|
* |
419
|
|
|
* @return string |
420
|
|
|
*/ |
421
|
|
|
public function getPublicUri() |
422
|
|
|
{ |
423
|
|
|
return sprintf( |
424
|
|
|
'%s/%s', |
425
|
|
|
rtrim($this->container->getPublicUri(), '/'), |
426
|
|
|
urlencode($this->name) |
427
|
|
|
); |
428
|
|
|
} |
429
|
|
|
|
430
|
|
|
/** |
431
|
|
|
* Return the SSL URI for this object, if its container is public. |
432
|
|
|
* |
433
|
|
|
* @return string |
434
|
|
|
*/ |
435
|
|
|
public function getPublicSslUri() |
436
|
|
|
{ |
437
|
|
|
return sprintf( |
438
|
|
|
'%s/%s', |
439
|
|
|
rtrim($this->container->getPublicSslUri(), '/'), |
440
|
|
|
urlencode($this->name) |
441
|
|
|
); |
442
|
|
|
} |
443
|
|
|
|
444
|
|
|
/** |
445
|
|
|
* Return the streaming URI for this object, if its container is public. |
446
|
|
|
* |
447
|
|
|
* @return string |
448
|
|
|
*/ |
449
|
|
|
public function getPublicStreamingUri() |
450
|
|
|
{ |
451
|
|
|
return sprintf( |
452
|
|
|
'%s/%s', |
453
|
|
|
rtrim($this->container->getPublicStreamingUri(), '/'), |
454
|
|
|
urlencode($this->name) |
455
|
|
|
); |
456
|
|
|
} |
457
|
|
|
|
458
|
|
|
/** |
459
|
|
|
* Purge Edge cache for this object. |
460
|
|
|
* |
461
|
|
|
* You will be notified by email if one is provided when the |
462
|
|
|
* job completes. |
463
|
|
|
* |
464
|
|
|
* Example: |
465
|
|
|
* <code> |
466
|
|
|
* $object1->purgeFromCdn(); |
467
|
|
|
* $object2->purgeFromCdn('[email protected]'); |
468
|
|
|
* $object3->purgeFromCdn('[email protected],[email protected]); |
469
|
|
|
* </code> |
470
|
|
|
* |
471
|
|
|
* @param string $email |
472
|
|
|
* @throws \OpenStackStorage\Exceptions\CDNNotEnabled |
473
|
|
|
*/ |
474
|
|
|
public function purgeFromCdn($email = null) |
475
|
|
|
{ |
476
|
|
|
if (!$this->container->getConnection()->getCdnEnabled()) { |
477
|
|
|
throw new Exceptions\CDNNotEnabled(); |
478
|
|
|
} |
479
|
|
|
|
480
|
|
|
$headers = array(); |
481
|
|
|
if (null !== $email) { |
482
|
|
|
$headers['X-Purge-Email'] = $email; |
483
|
|
|
} |
484
|
|
|
|
485
|
|
|
$this->container->getConnection()->makeCdnRequest( |
486
|
|
|
Client::DELETE, |
487
|
|
|
array($this->container->getName(), $this->name), |
488
|
|
|
$headers |
489
|
|
|
); |
490
|
|
|
} |
491
|
|
|
|
492
|
|
|
/** |
493
|
|
|
* Initialize the object with values from the remote service (if any). |
494
|
|
|
* |
495
|
|
|
* @return boolean |
496
|
|
|
* @throws \Exception|\OpenStackStorage\Exceptions\ResponseError |
497
|
|
|
*/ |
498
|
|
|
protected function initialize() |
499
|
|
|
{ |
500
|
|
|
if (!$this->name) { |
501
|
|
|
return false; |
502
|
|
|
} |
503
|
|
|
|
504
|
|
|
try { |
505
|
|
|
$response = $this->container->getConnection()->makeRequest( |
506
|
|
|
Client::HEAD, |
507
|
|
|
array($this->container->getName(), $this->name) |
508
|
|
|
); |
509
|
|
|
} catch (Exceptions\ResponseError $e) { |
510
|
|
|
if (404 == $e->getCode()) { |
511
|
|
|
return false; |
512
|
|
|
} |
513
|
|
|
|
514
|
|
|
throw $e; |
515
|
|
|
} |
516
|
|
|
|
517
|
|
|
$this->manifest = $response['headers']['x-object-manifest']; |
518
|
|
|
$this->contentType = $response['headers']['content-type']; |
519
|
|
|
$this->etag = $response['headers']['etag']; |
520
|
|
|
$this->size = intval($response['headers']['content-length']); |
521
|
|
|
$this->lastModified = new \DateTime($response['headers']['last-modified']); |
522
|
|
|
|
523
|
|
|
foreach ($response['headers'] as $name => $values) { |
524
|
|
|
if (0 === strpos($name, 'x-object-meta-')) { |
525
|
|
|
$this->metadata[substr($name, 14)] = is_array($values) ? $values[0] : $values; |
526
|
|
|
} |
527
|
|
|
} |
528
|
|
|
|
529
|
|
|
return true; |
530
|
|
|
} |
531
|
|
|
|
532
|
|
|
/** |
533
|
|
|
* Validates the object name. |
534
|
|
|
* |
535
|
|
|
* @param string $name |
536
|
|
|
* @throws \OpenStackStorage\Exceptions\InvalidObjectName |
537
|
|
|
*/ |
538
|
|
|
protected function validateName($name = null) |
539
|
|
|
{ |
540
|
|
|
if (null == $name) { |
|
|
|
|
541
|
|
|
$name = $this->name; |
542
|
|
|
} |
543
|
|
|
|
544
|
|
|
if (strlen($name) > OBJECT_NAME_LIMIT) { |
545
|
|
|
throw new Exceptions\InvalidObjectName(); |
546
|
|
|
} |
547
|
|
|
} |
548
|
|
|
|
549
|
|
|
/** |
550
|
|
|
* Returns array representing http headers based on the |
551
|
|
|
* respective instance attributes. |
552
|
|
|
* |
553
|
|
|
* @return array |
554
|
|
|
* @throws \OpenStackStorage\Exceptions\InvalidMetaValue |
555
|
|
|
* @throws \OpenStackStorage\Exceptions\InvalidMetaName |
556
|
|
|
*/ |
557
|
|
|
protected function getNewHeaders() |
558
|
|
|
{ |
559
|
|
|
$headers = array( |
560
|
|
|
'Content-Length' => (null !== $this->size) ? strval($this->size) : '0', |
561
|
|
|
); |
562
|
|
|
|
563
|
|
|
if (null !== $this->manifest) { |
564
|
|
|
$headers['X-Object-Manifest'] = $this->manifest; |
565
|
|
|
} |
566
|
|
|
|
567
|
|
|
if (null !== $this->etag) { |
568
|
|
|
$headers['ETag'] = $this->etag; |
569
|
|
|
} |
570
|
|
|
|
571
|
|
|
if (null !== $this->contentType) { |
572
|
|
|
$headers['Content-Type'] = $this->contentType; |
573
|
|
|
} else { |
574
|
|
|
$headers['Content-Type'] = 'application/octet-stream'; |
575
|
|
|
} |
576
|
|
|
|
577
|
|
|
foreach ($this->metadata as $key => $value) { |
578
|
|
|
$key = str_ireplace('X-Container-Meta-', '', $key); |
579
|
|
|
|
580
|
|
|
if (strlen($key) > META_NAME_LIMIT) { |
581
|
|
|
throw new Exceptions\InvalidMetaName(); |
582
|
|
|
} |
583
|
|
|
|
584
|
|
|
if (strlen($value) > META_VALUE_LIMIT) { |
585
|
|
|
throw new Exceptions\InvalidMetaValue(); |
586
|
|
|
} |
587
|
|
|
|
588
|
|
|
$headers['X-Object-Meta-' . $key] = $value; |
589
|
|
|
} |
590
|
|
|
|
591
|
|
|
return array_merge($this->headers, $headers); |
592
|
|
|
} |
593
|
|
|
} |
594
|
|
|
|
In PHP, under loose comparison (like
==
, or!=
, orswitch
conditions), values of different types might be equal.For
string
values, the empty string''
is a special case, in particular the following results might be unexpected: