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<?php |
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|
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/* |
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* Copyright 2016 Google LLC |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are |
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* met: |
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* |
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* * Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* * Redistributions in binary form must reproduce the above |
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* copyright notice, this list of conditions and the following disclaimer |
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* in the documentation and/or other materials provided with the |
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* distribution. |
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* * Neither the name of Google Inc. nor the names of its |
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* contributors may be used to endorse or promote products derived from |
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* this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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namespace Dudlewebs\WPMCS\Google\ApiCore; |
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|
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use Dudlewebs\WPMCS\Google\LongRunning\Operation; |
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use Dudlewebs\WPMCS\Google\Protobuf\Any; |
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use Dudlewebs\WPMCS\Google\Protobuf\Internal\Message; |
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use Dudlewebs\WPMCS\Google\Rpc\Status; |
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use LogicException; |
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/** |
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* Response object from a long running API method. |
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* |
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* The OperationResponse object is returned by API methods that perform |
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* a long running operation. It provides methods that can be used to |
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* poll the status of the operation, retrieve the results, and cancel |
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* the operation. |
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* |
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* To support a long running operation, the server must implement the |
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* Operations API, which is used by the OperationResponse object. If |
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* more control is required, it is possible to make calls against the |
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* Operations API directly instead of via the OperationResponse object |
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* using an Operations Client instance. |
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*/ |
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class OperationResponse |
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{ |
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use PollingTrait; |
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const DEFAULT_POLLING_INTERVAL = 1000; |
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const DEFAULT_POLLING_MULTIPLIER = 2; |
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const DEFAULT_MAX_POLLING_INTERVAL = 60000; |
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const DEFAULT_MAX_POLLING_DURATION = 0; |
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private string $operationName; |
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private ?object $operationsClient; |
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private ?string $operationReturnType; |
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private ?string $metadataReturnType; |
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private array $defaultPollSettings = ['initialPollDelayMillis' => self::DEFAULT_POLLING_INTERVAL, 'pollDelayMultiplier' => self::DEFAULT_POLLING_MULTIPLIER, 'maxPollDelayMillis' => self::DEFAULT_MAX_POLLING_INTERVAL, 'totalPollTimeoutMillis' => self::DEFAULT_MAX_POLLING_DURATION]; |
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private ?object $lastProtoResponse; |
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private bool $deleted = \false; |
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private array $additionalArgs; |
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private string $getOperationMethod; |
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private ?string $cancelOperationMethod; |
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private ?string $deleteOperationMethod; |
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private string $operationStatusMethod; |
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/** @var mixed */ |
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private $operationStatusDoneValue; |
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private ?string $operationErrorCodeMethod; |
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private ?string $operationErrorMessageMethod; |
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/** |
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* OperationResponse constructor. |
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* |
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* @param string $operationName |
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* @param object $operationsClient |
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* @param array $options { |
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* Optional. Options for configuring the operation response object. |
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* |
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* @type string $operationReturnType The return type of the longrunning operation. |
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* @type string $metadataReturnType The type of the metadata returned in the operation response. |
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* @type int $initialPollDelayMillis The initial polling interval to use, in milliseconds. |
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* @type int $pollDelayMultiplier Multiplier applied to the polling interval on each retry. |
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* @type int $maxPollDelayMillis The maximum polling interval to use, in milliseconds. |
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* @type int $totalPollTimeoutMillis The maximum amount of time to continue polling. |
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* @type object $lastProtoResponse A response already received from the server. |
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* @type string $getOperationMethod The method on $operationsClient to get the operation. |
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* @type string $cancelOperationMethod The method on $operationsClient to cancel the operation. |
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* @type string $deleteOperationMethod The method on $operationsClient to delete the operation. |
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* @type string $operationStatusMethod The method on the operation to get the status. |
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* @type string $operationStatusDoneValue The method on the operation to determine if the status is done. |
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* @type array $additionalOperationArguments Additional arguments to pass to $operationsClient methods. |
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* @type string $operationErrorCodeMethod The method on the operation to get the error code |
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* @type string $operationErrorMessageMethod The method on the operation to get the error status |
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* } |
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*/ |
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public function __construct(string $operationName, $operationsClient, array $options = []) |
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{ |
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$this->operationName = $operationName; |
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$this->operationsClient = $operationsClient; |
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$options += ['operationReturnType' => null, 'metadataReturnType' => null, 'lastProtoResponse' => null, 'getOperationMethod' => 'getOperation', 'cancelOperationMethod' => 'cancelOperation', 'deleteOperationMethod' => 'deleteOperation', 'operationStatusMethod' => 'getDone', 'operationStatusDoneValue' => \true, 'additionalOperationArguments' => [], 'operationErrorCodeMethod' => null, 'operationErrorMessageMethod' => null]; |
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$this->operationReturnType = $options['operationReturnType']; |
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$this->metadataReturnType = $options['metadataReturnType']; |
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$this->lastProtoResponse = $options['lastProtoResponse']; |
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$this->getOperationMethod = $options['getOperationMethod']; |
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$this->cancelOperationMethod = $options['cancelOperationMethod']; |
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$this->deleteOperationMethod = $options['deleteOperationMethod']; |
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$this->additionalArgs = $options['additionalOperationArguments']; |
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$this->operationStatusMethod = $options['operationStatusMethod']; |
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$this->operationStatusDoneValue = $options['operationStatusDoneValue']; |
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$this->operationErrorCodeMethod = $options['operationErrorCodeMethod']; |
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$this->operationErrorMessageMethod = $options['operationErrorMessageMethod']; |
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if (isset($options['initialPollDelayMillis'])) { |
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$this->defaultPollSettings['initialPollDelayMillis'] = $options['initialPollDelayMillis']; |
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} |
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if (isset($options['pollDelayMultiplier'])) { |
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$this->defaultPollSettings['pollDelayMultiplier'] = $options['pollDelayMultiplier']; |
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} |
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if (isset($options['maxPollDelayMillis'])) { |
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$this->defaultPollSettings['maxPollDelayMillis'] = $options['maxPollDelayMillis']; |
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} |
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if (isset($options['totalPollTimeoutMillis'])) { |
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$this->defaultPollSettings['totalPollTimeoutMillis'] = $options['totalPollTimeoutMillis']; |
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} |
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} |
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/** |
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* Check whether the operation has completed. |
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* |
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* @return bool |
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*/ |
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public function isDone() |
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{ |
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if (!$this->hasProtoResponse()) { |
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return \false; |
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} |
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$status = call_user_func([$this->lastProtoResponse, $this->operationStatusMethod]); |
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if (is_null($status)) { |
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return \false; |
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} |
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return $status === $this->operationStatusDoneValue; |
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} |
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/** |
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* Check whether the operation completed successfully. If the operation is not complete, or if the operation |
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* failed, return false. |
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* |
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* @return bool |
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*/ |
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public function operationSucceeded() |
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{ |
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if (!$this->hasProtoResponse()) { |
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return \false; |
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} |
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if (!$this->canHaveResult()) { |
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// For Operations which do not have a result, we consider a successful |
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// operation when the operation has completed without errors. |
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return $this->isDone() && !$this->hasErrors(); |
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} |
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return !is_null($this->getResult()); |
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} |
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/** |
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* Check whether the operation failed. If the operation is not complete, or if the operation |
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* succeeded, return false. |
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* |
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* @return bool |
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*/ |
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public function operationFailed() |
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{ |
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return $this->hasErrors(); |
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} |
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/** |
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* Get the formatted name of the operation |
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* |
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* @return string The formatted name of the operation |
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*/ |
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public function getName() |
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{ |
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return $this->operationName; |
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} |
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/** |
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* Poll the server in a loop until the operation is complete. |
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* |
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* Return true if the operation completed, otherwise return false. If the |
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* $options['totalPollTimeoutMillis'] setting is not set (or set <= 0) then |
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* pollUntilComplete will continue polling until the operation completes, |
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* and therefore will always return true. |
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* |
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* @param array $options { |
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* Options for configuring the polling behaviour. |
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* |
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* @type int $initialPollDelayMillis The initial polling interval to use, in milliseconds. |
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* @type int $pollDelayMultiplier Multiplier applied to the polling interval on each retry. |
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* @type int $maxPollDelayMillis The maximum polling interval to use, in milliseconds. |
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* @type int $totalPollTimeoutMillis The maximum amount of time to continue polling, in milliseconds. |
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* } |
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* @throws ApiException If an API call fails. |
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* @throws ValidationException |
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* @return bool Indicates if the operation completed. |
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*/ |
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public function pollUntilComplete(array $options = []) |
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{ |
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if ($this->isDone()) { |
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return \true; |
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} |
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$pollSettings = array_merge($this->defaultPollSettings, $options); |
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return $this->poll(function () { |
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$this->reload(); |
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return $this->isDone(); |
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}, $pollSettings); |
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} |
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/** |
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* Reload the status of the operation with a request to the service. |
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* |
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* @throws ApiException If the API call fails. |
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* @throws ValidationException If called on a deleted operation. |
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*/ |
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public function reload() |
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{ |
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if ($this->deleted) { |
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throw new ValidationException("Cannot call reload() on a deleted operation"); |
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} |
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$this->lastProtoResponse = $this->operationsCall($this->getOperationMethod, $this->getName(), $this->additionalArgs); |
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} |
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/** |
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* Return the result of the operation. If operationSucceeded() is false, return null. |
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* |
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* @return mixed|null The result of the operation, or null if operationSucceeded() is false |
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*/ |
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public function getResult() |
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{ |
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if (!$this->hasProtoResponse()) { |
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return null; |
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} |
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if (!$this->canHaveResult()) { |
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return null; |
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} |
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if (!$this->isDone()) { |
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return null; |
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} |
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/** @var Any|null $anyResponse */ |
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$anyResponse = $this->lastProtoResponse->getResponse(); |
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if (is_null($anyResponse)) { |
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return null; |
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} |
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if (is_null($this->operationReturnType)) { |
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return $anyResponse; |
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} |
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$operationReturnType = $this->operationReturnType; |
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/** @var Message $response */ |
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$response = new $operationReturnType(); |
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$response->mergeFromString($anyResponse->getValue()); |
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return $response; |
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} |
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/** |
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* If the operation failed, return the status. If operationFailed() is false, return null. |
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* |
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* @return Status|null The status of the operation in case of failure, or null if |
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* operationFailed() is false. |
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*/ |
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public function getError() |
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{ |
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if (!$this->hasProtoResponse() || !$this->isDone()) { |
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return null; |
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} |
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if ($this->operationErrorCodeMethod || $this->operationErrorMessageMethod) { |
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$errorCode = $this->operationErrorCodeMethod ? call_user_func([$this->lastProtoResponse, $this->operationErrorCodeMethod]) : null; |
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$errorMessage = $this->operationErrorMessageMethod ? call_user_func([$this->lastProtoResponse, $this->operationErrorMessageMethod]) : null; |
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return (new Status())->setCode(ApiStatus::rpcCodeFromHttpStatusCode($errorCode))->setMessage($errorMessage); |
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} |
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if (method_exists($this->lastProtoResponse, 'getError')) { |
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return $this->lastProtoResponse->getError(); |
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} |
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return null; |
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} |
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/** |
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* Get an array containing the values of 'operationReturnType', 'metadataReturnType', and |
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* the polling options `initialPollDelayMillis`, `pollDelayMultiplier`, `maxPollDelayMillis`, |
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* and `totalPollTimeoutMillis`. The array can be passed as the $options argument to the |
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* constructor when creating another OperationResponse object. |
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* |
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* @return array |
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*/ |
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public function getDescriptorOptions() |
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{ |
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return ['operationReturnType' => $this->operationReturnType, 'metadataReturnType' => $this->metadataReturnType] + $this->defaultPollSettings; |
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} |
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/** |
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* @return Operation|mixed|null The last Operation object received from the server. |
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*/ |
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public function getLastProtoResponse() |
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{ |
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return $this->lastProtoResponse; |
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} |
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/** |
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* @return object The OperationsClient object used to make |
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* requests to the operations API. |
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*/ |
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public function getOperationsClient() |
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{ |
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return $this->operationsClient; |
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} |
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/** |
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* Cancel the long-running operation. |
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* |
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* For operations of type Google\LongRunning\Operation, this method starts |
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* asynchronous cancellation on a long-running operation. The server |
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* makes a best effort to cancel the operation, but success is not |
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* guaranteed. If the server doesn't support this method, it will throw an |
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* ApiException with code \Google\Rpc\Code::UNIMPLEMENTED. Clients can continue |
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* to use reload and pollUntilComplete methods to check whether the cancellation |
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* succeeded or whether the operation completed despite cancellation. |
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* On successful cancellation, the operation is not deleted; instead, it becomes |
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* an operation with a getError() value with a \Google\Rpc\Status code of 1, |
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* corresponding to \Google\Rpc\Code::CANCELLED. |
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* |
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* @throws ApiException If the API call fails. |
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* @throws LogicException If the API call method has not been configured |
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*/ |
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public function cancel() |
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{ |
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if (is_null($this->cancelOperationMethod)) { |
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throw new LogicException('The cancel operation is not supported by this API'); |
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} |
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$this->operationsCall($this->cancelOperationMethod, $this->getName(), $this->additionalArgs); |
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} |
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/** |
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* Delete the long-running operation. |
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* |
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* For operations of type Google\LongRunning\Operation, this method |
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* indicates that the client is no longer interested in the operation result. |
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* It does not cancel the operation. If the server doesn't support this method, |
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* it will throw an ApiException with code \Google\Rpc\Code::UNIMPLEMENTED. |
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* |
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* @throws ApiException If the API call fails. |
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* @throws LogicException If the API call method has not been configured |
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*/ |
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public function delete() |
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{ |
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if (is_null($this->deleteOperationMethod)) { |
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throw new LogicException('The delete operation is not supported by this API'); |
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} |
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$this->operationsCall($this->deleteOperationMethod, $this->getName(), $this->additionalArgs); |
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$this->deleted = \true; |
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} |
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/** |
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* Get the metadata returned with the last proto response. If a metadata type was provided, then |
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* the return value will be of that type - otherwise, the return value will be of type Any. If |
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* no metadata object is available, returns null. |
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* |
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* @return mixed The metadata returned from the server in the last response. |
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*/ |
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public function getMetadata() |
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{ |
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if (!$this->hasProtoResponse()) { |
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return null; |
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} |
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if (!method_exists($this->lastProtoResponse, 'getMetadata')) { |
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// The call to getMetadata is only for OnePlatform LROs, and is not |
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// supported by other LRO GAPIC clients (e.g. Compute) |
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return null; |
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} |
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/** @var Any|null $any */ |
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$any = $this->lastProtoResponse->getMetadata(); |
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if (is_null($this->metadataReturnType)) { |
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return $any; |
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} |
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if (is_null($any)) { |
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return null; |
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} |
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// @TODO: This is probably not doing anything and can be removed in the next release. |
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if (is_null($any->getValue())) { |
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return null; |
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} |
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$metadataReturnType = $this->metadataReturnType; |
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/** @var Message $metadata */ |
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$metadata = new $metadataReturnType(); |
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$metadata->mergeFromString($any->getValue()); |
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return $metadata; |
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} |
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private function operationsCall($method, $name, array $additionalArgs) |
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{ |
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$args = array_merge([$name], $additionalArgs); |
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return call_user_func_array([$this->operationsClient, $method], $args); |
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} |
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private function canHaveResult() |
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{ |
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// The call to getResponse is only for OnePlatform LROs, and is not |
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// supported by other LRO GAPIC clients (e.g. Compute) |
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return method_exists($this->lastProtoResponse, 'getResponse'); |
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} |
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private function hasErrors() |
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{ |
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if (!$this->hasProtoResponse()) { |
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return \false; |
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} |
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if (method_exists($this->lastProtoResponse, 'getError')) { |
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return !empty($this->lastProtoResponse->getError()); |
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} |
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if ($this->operationErrorCodeMethod) { |
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$errorCode = call_user_func([$this->lastProtoResponse, $this->operationErrorCodeMethod]); |
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return !empty($errorCode); |
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} |
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// This should never happen unless an API is misconfigured |
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throw new LogicException('Unable to determine operation error status for this service'); |
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} |
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private function hasProtoResponse() |
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{ |
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return !is_null($this->lastProtoResponse); |
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} |
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} |
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|