Completed
Push — master ( bdf573...4512af )
by Dominik
02:52
created

SystemVReceive   A

Complexity

Total Complexity 6

Size/Duplication

Total Lines 96
Duplicated Lines 9.38 %

Coupling/Cohesion

Components 1
Dependencies 2

Importance

Changes 0
Metric Value
wmc 6
lcom 1
cbo 2
dl 9
loc 96
c 0
b 0
f 0
rs 10

3 Methods

Rating   Name   Duplication   Size   Complexity  
A __construct() 0 9 1
B receive() 0 37 3
A receiveAll() 9 9 2

How to fix   Duplicated Code   

Duplicated Code

Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.

Common duplication problems, and corresponding solutions are:

1
<?php
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namespace Saxulum\MessageQueue\SystemV;
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use Saxulum\MessageQueue\MessageInterface;
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use Saxulum\MessageQueue\MessageReceiveException;
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use Saxulum\MessageQueue\MessageReceiveInterface;
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final class SystemVReceive implements MessageReceiveInterface
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{
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    /**
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     * @var string
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     */
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    private $messageClass;
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    /**
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     * @var resource
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     */
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    private $queue;
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    /**
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     * @var int
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     */
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    private $type;
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    /**
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     * @var int
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     */
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    private $maxBytesPerMessage;
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    /**
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     * @param string $messageClass
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     * @param int    $key
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     * @param int    $type
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     * @param int    $qbytes
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     */
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    public function __construct(string $messageClass, int $key, int $type = 1, int $qbytes = 16384)
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    {
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        $this->messageClass = $messageClass;
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        $this->queue = msg_get_queue($key);
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        $this->type = $type;
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        $this->maxBytesPerMessage = $qbytes / 2;
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        msg_set_queue($this->queue, ['msg_qbytes' => $qbytes]);
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    }
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    /**
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     * @return null|MessageInterface
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     *
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     * @throws MessageReceiveException
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     */
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    public function receive()
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    {
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        $type = null;
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        $json = null;
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        $errorCode = null;
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        $status = msg_receive(
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            $this->queue,
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            $this->type,
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            $type,
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            $this->maxBytesPerMessage,
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            $json,
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            false,
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            MSG_IPC_NOWAIT,
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            $errorCode
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        );
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        if (false === $status) {
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            // we do not wait for a message (prevent lock)
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            if (MSG_ENOMSG === $errorCode) {
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                return null;
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            }
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            throw new MessageReceiveException(
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                sprintf(
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                    MessageReceiveException::MESSAGE_RECEIVE_FAILED,
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                    sprintf(' (SystemV error code %d)', $errorCode)
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                ),
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                MessageReceiveException::CODE_RECEIVE_FAILED
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            );
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        }
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        /** @var MessageInterface $messageClass */
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        $messageClass = $this->messageClass;
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        return $messageClass::fromJson($json);
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    }
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    /**
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     * @return array
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     *
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     * @throws MessageReceiveException
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     */
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    public function receiveAll(): array
0 ignored issues
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Duplication introduced by
This method seems to be duplicated in your project.

Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation.

You can also find more detailed suggestions in the “Code” section of your repository.

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    {
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        $messages = [];
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        while (null !== $message = $this->receive()) {
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            $messages[] = $message;
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        }
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        return $messages;
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    }
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}
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