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<?php |
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/** |
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* PHP Client for DDN Web Object Scalar (WOS) API |
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* |
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* @package Wosclient |
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* @author Casey McLaughlin <[email protected]> |
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* @license http://opensource.org/licenses/MIT MIT |
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* @link https://github.com/caseyamcl/wosclient |
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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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* ------------------------------------------------------------------ |
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*/ |
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namespace WosClient\Exception; |
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/** |
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* WOS Exceptions are thrown when the WOS returns error codes |
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* |
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* Specifically, non-0 x-ddn-status HTTP headers are translated to this |
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* |
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* @author Casey McLaughlin <[email protected]> |
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*/ |
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class WosServerException extends WosException |
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{ |
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const UNKNOWN_NAME = 'UNKNOWN'; |
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const UNKNOWN_MEANING = 'Unknown or undocumented WOS error code returned'; |
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/** |
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* Code Names Map |
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* |
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* @var array|string[] |
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*/ |
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private static $codeNames = [ |
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200 => 'NoNodeForPolicy', |
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201 => 'NoNodeForObject', |
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202 => 'UnknownPolicyName', |
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203 => 'InternalError', |
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205 => 'InvalidObjId', |
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206 => 'NoSpace', |
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207 => 'ObjNotFound', |
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208 => 'ObjCorrupted', |
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209 => 'FsCorrupted', |
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210 => 'PolicyNotSupported', |
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211 => 'IOErr', |
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212 => 'InvalidObjectSize', |
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214 => 'TemporarilyNotSupported', |
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216 => 'ReservationNotFound', |
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217 => 'EmptyObject', |
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218 => 'InvalidMetadataKey', |
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219 => 'UnusedReservation', |
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220 => 'WireCorruption', |
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221 => 'CommandTimeout', |
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222 => 'InvalidGetSpan' |
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]; |
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/** |
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* Code Meanings Map |
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* |
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* @var array|string[] |
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*/ |
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private static $codeMeanings = [ |
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200 => 'No nodes will accept Put or Reserve operations for this policy', |
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201 => 'No nodes have a copy of the requested object', |
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202 => 'Policy name or id is not currently supported by the cluster', |
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203 => 'Unknown internal Error', |
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205 => 'An invalid OID was specified', |
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206 => 'The cluster is full', |
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207 => 'Object cannot be located', |
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208 => 'Object does not match its checksum', |
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209 => 'Filesystem internal structures are corrupted', |
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210 => 'Insufficient cluster resources to service Put or Reserve request for this policy', |
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211 => 'Unrecoverable drive error', |
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212 => '> 5 TB', |
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214 => 'Operation should be retried momentarily', |
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216 => 'Reservation not found for specified OID', |
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217 => 'Attempt to store a zero-length object', |
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218 => 'Invalid metadata key specified', |
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219 => 'Attempted Get of an unused reservation', |
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220 => 'Uncorrectable network corruption of the object', |
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221 => 'Command did not complete in a timely manner', |
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222 => 'Illegal combination of buffered=true, integity=false' |
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]; |
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// --------------------------------------------------------------- |
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/** |
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* WosServerException constructor. |
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* |
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* @param string $code |
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* @param string $message |
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* @param \Exception $previous |
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*/ |
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public function __construct($code, $message = '', \Exception $previous = null) |
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{ |
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// If we get a '0' from the server, and we throw this exception, then |
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// something is wrong in this codebase. |
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if ($code == 0) { |
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throw new \LogicException('0 DDN code is not an error code (it is the success code)'); |
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} |
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// Automatically set message if not specified |
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if (! $message) { |
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$message = array_key_exists($code, static::$codeMeanings) |
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? static::$codeMeanings[$code] |
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: static::UNKNOWN_MEANING; |
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} |
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parent::__construct($message, $code, $previous); |
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} |
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/** |
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* Get DDN error name |
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* |
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* @return string |
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*/ |
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public function getErrorName() |
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{ |
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return array_key_exists($this->getCode(), static::$codeNames) |
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? static::$codeNames[$this->getCode()] |
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: static::UNKNOWN_NAME; |
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} |
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/** |
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* Get the DDN error meaning |
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* |
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* @return string |
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*/ |
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public function getErrorMeaning() |
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{ |
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return array_key_exists($this->getCode(), static::$codeMeanings) |
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? static::$codeMeanings[$this->getCode()] |
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: static::UNKNOWN_MEANING; |
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} |
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/** |
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* @return string |
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*/ |
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public function __toString() |
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{ |
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return sprintf('%s %s: %s', $this->getCode(), $this->getErrorName(), $this->getErrorMeaning()); |
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} |
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} |
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Let’s assume you have a class which uses late-static binding:
The code above will run fine in your PHP runtime. However, if you now create a sub-class and call the
getSomeVariable()on that sub-class, you will receive a runtime error:In the case above, it makes sense to update
SomeClassto useselfinstead: