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<?php |
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namespace Puzzle\AMQP\Workers; |
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use Puzzle\AMQP\ReadableMessage; |
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use Puzzle\AMQP\Messages\Body; |
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class ReadableMessageModifier |
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{ |
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private |
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$originalMessage, |
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$newRoutingKey, |
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$newBody, |
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$newAttributeValues, |
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$newHeaders, |
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$droppedHeaders; |
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public function __construct(ReadableMessage $originalMessage) |
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{ |
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$this->originalMessage = $originalMessage; |
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$this->newRoutingKey= $originalMessage->getRoutingKey(); |
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$this->newBody = null; |
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$this->newAttributeValues = []; |
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$this->newHeaders = []; |
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$this->droppedHeaders = []; |
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} |
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public function changeRoutingKey($newRoutingKey) |
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{ |
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$this->newRoutingKey = $newRoutingKey; |
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return $this; |
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} |
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public function changeBody(Body $newBody) |
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{ |
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$this->newBody = $newBody; |
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return $this; |
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} |
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public function changeAttribute($name, $value) |
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{ |
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$this->newAttributeValues[$name] = $value; |
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return $this; |
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} |
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public function addHeader($headerName, $value) |
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{ |
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$this->newHeaders[$headerName] = $value; |
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return $this; |
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} |
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public function dropHeader($headerName) |
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{ |
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$this->droppedHeaders[] = $headerName; |
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return $this; |
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} |
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public function build() |
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{ |
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$properties = $this->buildAttributes( |
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$this->originalMessage->getAttributes() |
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); |
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$properties['headers'] = $this->buildHeaders( |
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$this->extractHeaders($properties) |
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); |
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return new MessageAdapter( |
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new \Swarrot\Broker\Message($this->buildBody(), $properties) |
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); |
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} |
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private function extractHeaders(array $properties) |
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{ |
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$headers = []; |
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if(isset($properties['headers'])) |
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{ |
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$headers = $properties['headers']; |
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} |
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return $headers; |
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} |
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private function buildBody() |
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{ |
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if($this->newBody instanceof Body) |
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{ |
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return $this->newBody->asTransported(); |
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} |
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return $this->originalMessage->getBodyAsTransported(); |
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} |
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private function buildAttributes(array $attributes) |
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{ |
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if($this->newBody instanceof Body) |
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{ |
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$attributes['content_type'] = $this->newBody->getContentType(); |
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} |
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$attributes['routing_key'] = $this->newRoutingKey; |
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foreach($this->newAttributeValues as $name => $value) |
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{ |
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if(isset($attributes[$name])) |
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{ |
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$attributes[$name] = $value; |
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} |
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} |
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return $attributes; |
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} |
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private function buildHeaders(array $headers) |
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{ |
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foreach($this->droppedHeaders as $droppedHeader) |
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{ |
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if(isset($headers[$droppedHeader])) |
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{ |
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unset($headers[$droppedHeader]); |
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} |
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} |
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foreach($this->newHeaders as $name => $value) |
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{ |
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$headers[$name] = $value; |
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} |
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return $headers; |
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} |
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} |
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