RpcClient::forceReconnect() - Code Metrics - Inspection of "try fix broken pipe" - contamobi/CmobiRabbitmqBundle - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 1fce20...c903a9 )

by Daniel

created 2017-04-02 17:49 UTC

RpcClient::forceReconnect() A

↳ Parent: RpcClient

Complexity

Conditions	3
Paths	6

Size

Total Lines	20
Code Lines	16

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
c	0
b	0
f	0
dl	0
loc	20
rs	9.4285
cc	3
eloc	16
nc	6
nop	3

<?php

namespace Cmobi\RabbitmqBundle\Transport\Rpc;

use Cmobi\RabbitmqBundle\Connection\CmobiAMQPChannel;
use Cmobi\RabbitmqBundle\Connection\CmobiAMQPConnection;
use Cmobi\RabbitmqBundle\Connection\CmobiAMQPConnectionInterface;
use Cmobi\RabbitmqBundle\Connection\ConnectionManager;
use Cmobi\RabbitmqBundle\Queue\CmobiAMQPMessage;
use Cmobi\RabbitmqBundle\Queue\QueueProducerInterface;
use Cmobi\RabbitmqBundle\Transport\Exception\QueueNotFoundException;
use PhpAmqpLib\Message\AMQPMessage;
use Ramsey\Uuid\Uuid;

class RpcClient implements QueueProducerInterface
{
    private $connectionName;
    private $connectionManager;
    private $fromName;
    private $queueName;
    private $response;
    private $logOutput;
    private $errOutput;
    private $correlationId;
    private $callbackQueue;

    public function __construct($queueName, ConnectionManager $manager, $fromName, $connectionName = 'default')
    {
        $this->connectionName = $connectionName;
        $this->queueName = $queueName;
        $this->fromName = $fromName;
        $this->connectionManager = $manager;
        $this->logOutput = fopen('php://stdout', 'a+');
        $this->errOutput = fopen('php://stderr', 'a+');
    }

    /**
     * @param AMQPMessage $rep
     */
    public function onResponse(AMQPMessage $rep)
    {
        if ($rep->get('correlation_id') === $this->correlationId) {
            $this->response = $rep->getBody();
        }
    }

    public function createCallbackQueue(CmobiAMQPChannel $channel, $expire, $corralationId = null)
    {
        $this->correlationId = is_null($corralationId) ? $this->generateCorrelationId() : $corralationId;
        $queueBag = new RpcQueueBag(
            sprintf(
                'callback_to_%s_from_%s_%s',
                $this->getQueueName(),
                $this->getFromName(),
                Uuid::uuid4()->toString()
                . microtime()
            )
        );
        $queueBag->setArguments([
            'x-expires' => ['I', $expire],
        ]);
        list($callbackQueue) = $channel->queueDeclare($queueBag->getQueueDeclare());
        $this->callbackQueue = $callbackQueue;

        $callbackQueue = $this->createCallbackQueue($channel, $expire);
        $consumeQueueBag = new RpcQueueBag($callbackQueue);

        $channel->basicConsume(
            $consumeQueueBag->getQueueConsume(),
            [$this, 'onResponse']
        );

        return $callbackQueue;
    }

    /**
     * @param $data
     * @param int $expire
     * @param int $priority
     * @throws QueueNotFoundException
     * @throws \Cmobi\RabbitmqBundle\Connection\Exception\NotFoundAMQPConnectionFactoryException
     */
    public function publish($data, $expire = self::DEFAULT_TTL, $priority = self::PRIORITY_LOW)
    {
        $this->response = null;
        $connection = $this->connectionManager->getConnection($this->connectionName);
        $channel = $connection->channel();

        if (! $this->queueHasExists($channel)) {
            throw new QueueNotFoundException("Queue $this->queueName not declared.");
        }
        $msg = new CmobiAMQPMessage(
            (string) $data,
            [
                'correlation_id' => $this->correlationId,
                'reply_to' => $this->callbackQueue,
                'priority' => $priority,
            ]
        );
        $channel->basic_publish($msg, '', $this->getQueueName());

        while (! $this->response) {
            try {
                $channel->wait(null, 0, ($expire / 1000));
function acceptsInteger($int) { }

$x = '123'; // string "123"

// Instead of
acceptsInteger($x);

// we recommend to use
acceptsInteger((integer) $x);
            } catch (\Exception $e) {
                fwrite($this->errOutput, $e->getMessage());
                $connection = $this->forceReconnect($connection, $expire, $this->correlationId);
                $channel = $connection->channel();

                continue;
            }
        }
        $channel->close();
        $connection->close();
    }

    /**
     * @return bool
     */
    /**
     * @param CmobiAMQPChannel $channel
     * @return bool
     */
    public function queueHasExists(CmobiAMQPChannel $channel)

    {
        try {
            $channel->queue_declare($this->queueName, true);
        } catch (\Exception $e) {
            return false;
        }

        return true;
    }

    /**
     * @return string
     */
    public function getQueueName()
    {
        return $this->queueName;
    }

    /**
     * @return string
     */
    public function getFromName()
    {
        return $this->fromName;
    }

    /**
     * @todo unecessary method set, its only exists to run tests whitout stay jailed in infinite while waiting response.
     *
     * @param $content
     */
    public function setResponse($content)
    {
        $this->response = $content;
    }

    /**
     * @return string
     */
    public function getResponse()
    {
        return $this->response;
    }

    /** @return string */
    public function generateCorrelationId()
    {
        return uniqid($this->getQueueName()) . Uuid::uuid4()->toString() . microtime();
    }

    /**
     * @return string
     */
    public function getCurrentCorrelationId()
    {
        return $this->correlationId;
    }

    /**
     * @return string
     */
    public function getExchange()
    {
        return false;
class Author {
    private $name;

    public function __construct($name) {
        $this->name = $name;
    }

    public function getName() {
        return $this->name;
    }
}

abstract class Post {
    public function getAuthor() {
        return 'Johannes';
    }
}

class BlogPost extends Post {
    public function getAuthor() {
        return new Author('Johannes');
    }
}

class ForumPost extends Post { /* ... */ }

function my_function(Post $post) {
    echo strtoupper($post->getAuthor());
}
    }

    /**
     * @return string
     */
    public function getExchangeType()
    {
        return false;
class Author {
    private $name;

    public function __construct($name) {
        $this->name = $name;
    }

    public function getName() {
        return $this->name;
    }
}

abstract class Post {
    public function getAuthor() {
        return 'Johannes';
    }
}

class BlogPost extends Post {
    public function getAuthor() {
        return new Author('Johannes');
    }
}

class ForumPost extends Post { /* ... */ }

function my_function(Post $post) {
    echo strtoupper($post->getAuthor());
}
    }

    /**
     * @return ConnectionManager
     */
    public function getConnectionManager()
    {
        return $this->connectionManager;
    }

    /**
     * @param CmobiAMQPConnectionInterface $connection
     * @param $expire
     * @param $corralationId
     * @return CmobiAMQPConnectionInterface
     */
    public function forceReconnect(CmobiAMQPConnectionInterface $connection, $expire, $corralationId)
    {
        do {
            try {
                $connection->close();
                $failed = false;
                fwrite($this->logOutput, 'start RpcClient::forceReconnect() - trying connect...' . PHP_EOL);
                $connection = $this->getConnectionManager()->getConnection($this->connectionName);
                $channel = $connection->channel();
                $this->createCallbackQueue($channel, $expire, $corralationId);
            } catch (\Exception $e) {
                $failed = true;
                sleep(3);
                fwrite($this->errOutput, 'failed RpcClient::forceReconnect() - ' . $e->getMessage() . PHP_EOL);
            }
        } while ($failed);
        fwrite($this->logOutput, 'RpcClient::forceReconnect() - connected!' . PHP_EOL);

        return $connection;
    }
}


1		<?php
2
3		namespace Cmobi\RabbitmqBundle\Transport\Rpc;
4
5		use Cmobi\RabbitmqBundle\Connection\CmobiAMQPChannel;
6		use Cmobi\RabbitmqBundle\Connection\CmobiAMQPConnection;
7		use Cmobi\RabbitmqBundle\Connection\CmobiAMQPConnectionInterface;
8		use Cmobi\RabbitmqBundle\Connection\ConnectionManager;
9		use Cmobi\RabbitmqBundle\Queue\CmobiAMQPMessage;
10		use Cmobi\RabbitmqBundle\Queue\QueueProducerInterface;
11		use Cmobi\RabbitmqBundle\Transport\Exception\QueueNotFoundException;
12		use PhpAmqpLib\Message\AMQPMessage;
13		use Ramsey\Uuid\Uuid;
14
15		class RpcClient implements QueueProducerInterface
16		{
17		private $connectionName;
18		private $connectionManager;
19		private $fromName;
20		private $queueName;
21		private $response;
22		private $logOutput;
23		private $errOutput;
24		private $correlationId;
25		private $callbackQueue;
26
27		public function __construct($queueName, ConnectionManager $manager, $fromName, $connectionName = 'default')
28		{
29		$this->connectionName = $connectionName;
30		$this->queueName = $queueName;
31		$this->fromName = $fromName;
32		$this->connectionManager = $manager;
33		$this->logOutput = fopen('php://stdout', 'a+');
34		$this->errOutput = fopen('php://stderr', 'a+');
35		}
36
37		/**
38		* @param AMQPMessage $rep
39		*/
40		public function onResponse(AMQPMessage $rep)
41		{
42		if ($rep->get('correlation_id') === $this->correlationId) {
43		$this->response = $rep->getBody();
44		}
45		}
46
47		public function createCallbackQueue(CmobiAMQPChannel $channel, $expire, $corralationId = null)
48		{
49		$this->correlationId = is_null($corralationId) ? $this->generateCorrelationId() : $corralationId;
50		$queueBag = new RpcQueueBag(
51		sprintf(
52		'callback_to_%s_from_%s_%s',
53		$this->getQueueName(),
54		$this->getFromName(),
55		Uuid::uuid4()->toString()
56		. microtime()
57		)
58		);
59		$queueBag->setArguments([
60		'x-expires' => ['I', $expire],
61		]);
62		list($callbackQueue) = $channel->queueDeclare($queueBag->getQueueDeclare());
63		$this->callbackQueue = $callbackQueue;
64
65		$callbackQueue = $this->createCallbackQueue($channel, $expire);
66		$consumeQueueBag = new RpcQueueBag($callbackQueue);
67
68		$channel->basicConsume(
69		$consumeQueueBag->getQueueConsume(),
70		[$this, 'onResponse']
71		);
72
73		return $callbackQueue;
74		}
75
76		/**
77		* @param $data
78		* @param int $expire
79		* @param int $priority
80		* @throws QueueNotFoundException
81		* @throws \Cmobi\RabbitmqBundle\Connection\Exception\NotFoundAMQPConnectionFactoryException
82		*/
83		public function publish($data, $expire = self::DEFAULT_TTL, $priority = self::PRIORITY_LOW)
84		{
85		$this->response = null;
86		$connection = $this->connectionManager->getConnection($this->connectionName);
87		$channel = $connection->channel();
88
89		if (! $this->queueHasExists($channel)) {
90		throw new QueueNotFoundException("Queue $this->queueName not declared.");
91		}
92		$msg = new CmobiAMQPMessage(
93		(string) $data,
94		[
95		'correlation_id' => $this->correlationId,
96		'reply_to' => $this->callbackQueue,
97		'priority' => $priority,
98		]
99		);
100		$channel->basic_publish($msg, '', $this->getQueueName());
101
102		while (! $this->response) {
103		try {
104		$channel->wait(null, 0, ($expire / 1000));
		0 ignored issues – show Documentation introduced 2017-04-02 15:16 UTC by Report Bug Copy Issue Report `0` is of type `integer`, but the function expects a `boolean`. It seems like the type of the argument is not accepted by the function/method which you are calling. In some cases, in particular if PHP’s automatic type-juggling kicks in this might be fine. In other cases, however this might be a bug. We suggest to add an explicit type cast like in the following example: function acceptsInteger($int) { } $x = '123'; // string "123" // Instead of acceptsInteger($x); // we recommend to use acceptsInteger((integer) $x); Loading history...
105		} catch (\Exception $e) {
106		fwrite($this->errOutput, $e->getMessage());
107		$connection = $this->forceReconnect($connection, $expire, $this->correlationId);
108		$channel = $connection->channel();
109
110		continue;
111		}
112		}
113		$channel->close();
114		$connection->close();
115		}
116
117		/**
118		* @return bool
119		*/
120		/**
121		* @param CmobiAMQPChannel $channel
122		* @return bool
123		*/
124	View Code Duplication	public function queueHasExists(CmobiAMQPChannel $channel)
		0 ignored issues – show Duplication introduced 2017-04-02 17:52 UTC by Report Bug Copy Issue Report 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. Loading history...
125		{
126		try {
127		$channel->queue_declare($this->queueName, true);
128		} catch (\Exception $e) {
129		return false;
130		}
131
132		return true;
133		}
134
135		/**
136		* @return string
137		*/
138		public function getQueueName()
139		{
140		return $this->queueName;
141		}
142
143		/**
144		* @return string
145		*/
146		public function getFromName()
147		{
148		return $this->fromName;
149		}
150
151		/**
152		* @todo unecessary method set, its only exists to run tests whitout stay jailed in infinite while waiting response.
153		*
154		* @param $content
155		*/
156		public function setResponse($content)
157		{
158		$this->response = $content;
159		}
160
161		/**
162		* @return string
163		*/
164		public function getResponse()
165		{
166		return $this->response;
167		}
168
169		/** @return string */
170		public function generateCorrelationId()
171		{
172		return uniqid($this->getQueueName()) . Uuid::uuid4()->toString() . microtime();
173		}
174
175		/**
176		* @return string
177		*/
178		public function getCurrentCorrelationId()
179		{
180		return $this->correlationId;
181		}
182
183		/**
184		* @return string
185		*/
186		public function getExchange()
187		{
188		return false;
		0 ignored issues – show Bug Best Practice introduced 2016-12-28 18:51 UTC by Report Bug Copy Issue Report The return type of `return false;` (`false`) is incompatible with the return type declared by the interface `Cmobi\RabbitmqBundle\Que...rInterface::getExchange` of type `string`. If you return a value from a function or method, it should be a sub-type of the type that is given by the parent type f.e. an interface, or abstract method. This is more formally defined by the Lizkov substitution principle, and guarantees that classes that depend on the parent type can use any instance of a child type interchangably. This principle also belongs to the SOLID principles for object oriented design. Let’s take a look at an example: class Author { private $name; public function __construct($name) { $this->name = $name; } public function getName() { return $this->name; } } abstract class Post { public function getAuthor() { return 'Johannes'; } } class BlogPost extends Post { public function getAuthor() { return new Author('Johannes'); } } class ForumPost extends Post { /* ... */ } function my_function(Post $post) { echo strtoupper($post->getAuthor()); } Our function `my_function` expects a `Post` object, and outputs the author of the post. The base class `Post` returns a simple string and outputting a simple string will work just fine. However, the child class `BlogPost` which is a sub-type of `Post` instead decided to return an `object`, and is therefore violating the SOLID principles. If a `BlogPost` were passed to `my_function`, PHP would not complain, but ultimately fail when executing the `strtoupper` call in its body. Loading history...
189		}
190
191		/**
192		* @return string
193		*/
194		public function getExchangeType()
195		{
196		return false;
		0 ignored issues – show Bug Best Practice introduced 2016-12-28 18:51 UTC by Report Bug Copy Issue Report The return type of `return false;` (`false`) is incompatible with the return type declared by the interface `Cmobi\RabbitmqBundle\Que...erface::getExchangeType` of type `string`. If you return a value from a function or method, it should be a sub-type of the type that is given by the parent type f.e. an interface, or abstract method. This is more formally defined by the Lizkov substitution principle, and guarantees that classes that depend on the parent type can use any instance of a child type interchangably. This principle also belongs to the SOLID principles for object oriented design. Let’s take a look at an example: class Author { private $name; public function __construct($name) { $this->name = $name; } public function getName() { return $this->name; } } abstract class Post { public function getAuthor() { return 'Johannes'; } } class BlogPost extends Post { public function getAuthor() { return new Author('Johannes'); } } class ForumPost extends Post { /* ... */ } function my_function(Post $post) { echo strtoupper($post->getAuthor()); } Our function `my_function` expects a `Post` object, and outputs the author of the post. The base class `Post` returns a simple string and outputting a simple string will work just fine. However, the child class `BlogPost` which is a sub-type of `Post` instead decided to return an `object`, and is therefore violating the SOLID principles. If a `BlogPost` were passed to `my_function`, PHP would not complain, but ultimately fail when executing the `strtoupper` call in its body. Loading history...
197		}
198
199		/**
200		* @return ConnectionManager
201		*/
202		public function getConnectionManager()
203		{
204		return $this->connectionManager;
205		}
206
207		/**
208		* @param CmobiAMQPConnectionInterface $connection
209		* @param $expire
210		* @param $corralationId
211		* @return CmobiAMQPConnectionInterface
212		*/
213		public function forceReconnect(CmobiAMQPConnectionInterface $connection, $expire, $corralationId)
214		{
215		do {
216		try {
217		$connection->close();
218		$failed = false;
219		fwrite($this->logOutput, 'start RpcClient::forceReconnect() - trying connect...' . PHP_EOL);
220		$connection = $this->getConnectionManager()->getConnection($this->connectionName);
221		$channel = $connection->channel();
222		$this->createCallbackQueue($channel, $expire, $corralationId);
223		} catch (\Exception $e) {
224		$failed = true;
225		sleep(3);
226		fwrite($this->errOutput, 'failed RpcClient::forceReconnect() - ' . $e->getMessage() . PHP_EOL);
227		}
228		} while ($failed);
229		fwrite($this->logOutput, 'RpcClient::forceReconnect() - connected!' . PHP_EOL);
230
231		return $connection;
232		}
233		}
234

contamobi / CmobiRabbitmqBundle

Push — master ( 1fce20...c903a9 )

RpcClient::forceReconnect() A

Complexity

Size

Duplication

Importance

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