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<?php |
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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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* The software is based on the Axon Framework project which is |
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* licensed under the Apache 2.0 license. For more information on the Axon Framework |
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* see <http://www.axonframework.org/>. |
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* |
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* This software consists of voluntary contributions made by many individuals |
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* and is licensed under the MIT license. For more information, see |
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* <http://www.governor-framework.org/>. |
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*/ |
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namespace Governor\Framework\CommandHandling\Distributed; |
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use Governor\Framework\CommandHandling\CommandMessageInterface; |
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/** |
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* RoutingStrategy implementation that uses the value in the MetaData of a CommandMessage assigned to a given key. The |
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* value's <code>toString()</code> is used to convert the MetaData value to a String. |
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* |
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* @author Allard Buijze |
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* @since 2.0 |
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*/ |
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class MetaDataRoutingStrategy extends AbstractRoutingStrategy |
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{ |
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/** |
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* @var string |
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*/ |
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private $metaDataKey; |
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/** |
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* Initializes the MetaDataRoutingStrategy where the given <code>metaDataKey</code> is used to get the Meta Data |
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* value. The given <code>unresolvedRoutingKeyPolicy</code> presecribes what to do when the Meta Data properties |
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* cannot be found. |
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* |
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* @param string $metaDataKey The key on which the value is retrieved from the MetaData. |
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* @param int $unresolvedRoutingKeyPolicy The policy prescribing behavior when the routing key cannot be resolved |
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*/ |
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public function __construct($metaDataKey, $unresolvedRoutingKeyPolicy = UnresolvedRoutingKeyPolicy::ERROR) |
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{ |
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parent::__construct($unresolvedRoutingKeyPolicy); |
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$this->metaDataKey = $metaDataKey; |
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} |
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/** |
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* @param CommandMessageInterface $command |
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* @return null|string |
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*/ |
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protected function doResolveRoutingKey(CommandMessageInterface $command) |
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{ |
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$value = $command->getMetaData()->get($this->metaDataKey); |
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return isset($value) ? (string)$value : null; |
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} |
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} |
SmartGecko /
GovernorFramework
