Connection::channel() - Code Metrics - Inspection of "Misc fixes and add auto-generated code to scrutini..." - skolodyazhnyy/butter-amqplib - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 4725f7...79150a )

by Sergey

created 2016-09-13 08:19 UTC

Connection::channel() B

↳ Parent: Connection

Complexity

Conditions	6
Paths	9

Size

Total Lines	17
Code Lines	9

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	11
CRAP Score	6

Importance

Changes

Metric	Value
dl	0
loc	17
ccs	11
cts	11
cp	1
rs	8.8571
c	0
b	0
f	0
cc	6
eloc	9
nc	9
nop	1
crap	6

<?php

namespace ButterAMQP\AMQP091;

use ButterAMQP\ConnectionInterface;
use ButterAMQP\Exception\AMQPException;
use ButterAMQP\Exception\InvalidChannelNumberException;
use ButterAMQP\AMQP091\Framing\Frame;
use ButterAMQP\AMQP091\Framing\Heartbeat;
use ButterAMQP\AMQP091\Framing\Method\ConnectionBlocked;
use ButterAMQP\AMQP091\Framing\Method\ConnectionClose;
use ButterAMQP\AMQP091\Framing\Method\ConnectionCloseOk;
use ButterAMQP\AMQP091\Framing\Method\ConnectionOpen;
use ButterAMQP\AMQP091\Framing\Method\ConnectionOpenOk;
use ButterAMQP\AMQP091\Framing\Method\ConnectionStart;
use ButterAMQP\AMQP091\Framing\Method\ConnectionStartOk;
use ButterAMQP\AMQP091\Framing\Method\ConnectionTune;
use ButterAMQP\AMQP091\Framing\Method\ConnectionTuneOk;
use ButterAMQP\AMQP091\Framing\Method\ConnectionUnblocked;
use ButterAMQP\Heartbeat\TimeHeartbeat;
use ButterAMQP\Security\Authenticator;
use ButterAMQP\Security\AuthenticatorInterface;
use ButterAMQP\Url;
use ButterAMQP\WireInterface;
use ButterAMQP\WireSubscriberInterface;

class Connection implements ConnectionInterface, WireSubscriberInterface
{
    const STATUS_CLOSED = 'closed';
    const STATUS_READY = 'ready';
    const STATUS_BLOCKED = 'blocked';

    /**
     * @var Url
     */
    private $url;

    /**
     * @var WireInterface
     */
    private $wire;

    /**
     * @var AuthenticatorInterface
     */
    private $authenticator;

    /**
     * @var string
     */
    private $status;

    /**
     * @var Channel[]
     */
    private $channels = [];

    /**
     * @var array
     */
    private $capabilities = [];

    /**
     * @param Url|string             $url
     * @param WireInterface          $wire
     * @param AuthenticatorInterface $authenticator
     */
    public function __construct(Url $url, WireInterface $wire, AuthenticatorInterface $authenticator = null)
    {
        $this->url = $url;
        $this->wire = $wire;
        $this->authenticator = $authenticator ?: Authenticator::build();
    }

    /**
     * Connection status. See STATUS_* constants for possible values.
     *
     * @return string
     */
    public function getStatus()
    {
        return $this->status;
    }

    /**
     * {@inheritdoc}
     */
    public function open()
    {
        $this->channels = [];
        $this->capabilities = [];

        $this->wire->open($this->url)
            ->subscribe(0, $this);

        $this->wait(ConnectionTune::class);

        $this->send(new ConnectionOpen(0, $this->url->getVhost(), '', false))
            ->wait(ConnectionOpenOk::class);

        $this->status = self::STATUS_READY;

        return $this;
    }

    /**
     * {@inheritdoc}
     */
    public function channel($id = null)
    {
        if ($id === null) {
            $id = count($this->channels) == 0 ? 1 : max(array_keys($this->channels)) + 1;
        }

        if (!is_integer($id) || $id <= 0) {
            throw new InvalidChannelNumberException('Channel ID should be positive integer');
        }

        if (!isset($this->channels[$id])) {
            $channel = $this->channels[$id] = new Channel($this->wire, $id);
            $channel->open();
        }

        return $this->channels[$id];
    }

    /**
     * {@inheritdoc}
     */
    public function close($code = 0, $reason = '')
    {
        $this->send(new ConnectionClose(0, $code, $reason, 0, 0))
            ->wait(ConnectionCloseOk::class);

        $this->status = self::STATUS_CLOSED;

        $this->wire->close();

        return $this;
    }

    /**
     * {@inheritdoc}
     */
    public function isSupported($capability)
    {
        return isset($this->capabilities[$capability]) ?
            (bool) $this->capabilities[$capability] : false;
    }

    /**
     * {@inheritdoc}
     */
    public function serve($blocking = true)
    {
        $this->wire->next($blocking);

        return $this;
    }

    /**
     * Sends frame to the service channel (#0).
     *
     * @param Frame $frame
     *
     * @return $this
     */
    private function send(Frame $frame)
    {
        $this->wire->send($frame);

        return $this;
    }

    /**
     * Wait for a frame in the service channel (#0).
     *
     * @param string|array $type
     *
     * @return Frame
     */
    private function wait($type)
    {
        return $this->wire->wait(0, $type);
    }

    /**
     * {@inheritdoc}
     */
    public function dispatch(Frame $frame)
    {
        if ($frame instanceof ConnectionStart) {
if ($x instanceof DoesNotExist) {
    // Do something.
}
            $this->onConnectionStart($frame);
        } elseif ($frame instanceof ConnectionTune) {
if ($x instanceof DoesNotExist) {
    // Do something.
}
            $this->onConnectionTune($frame);
        } elseif ($frame instanceof ConnectionClose) {
if ($x instanceof DoesNotExist) {
    // Do something.
}
            $this->onConnectionClose($frame);
        } elseif ($frame instanceof ConnectionBlocked) {
if ($x instanceof DoesNotExist) {
    // Do something.
}
            $this->onConnectionBlocked($frame);
        } elseif ($frame instanceof ConnectionUnblocked) {
if ($x instanceof DoesNotExist) {
    // Do something.
}
            $this->onConnectionUnblocked($frame);
        }
    }

    /**
     * This frame is the first frame received from server.
     * It provides server details and requests client credentials.
     *
     * @param ConnectionStart $frame
     */
    private function onConnectionStart(ConnectionStart $frame)
    {
        $properties = $frame->getServerProperties();

        $this->capabilities = isset($properties['capabilities']) ?
            $properties['capabilities'] : [];

        $mechanism = $this->authenticator
            ->get(explode(' ', $frame->getMechanisms()));

        list($locale) = explode(' ', $frame->getLocales());

        $this->send(new ConnectionStartOk(
            0,
            [
                'platform' => 'PHP '.PHP_VERSION,
                'product' => 'ButterAMQP',
                'version' => '0.1.0',
                'capabilities' => [
                    'publisher_confirms' => true,
                    'exchange_exchange_bindings' => true,
                    'basic.nack' => true,
                    'connection.blocked' => true,
                    'consumer_cancel_notify' => true,
                    'authentication_failure_close' => true,
                ],
            ],
            $mechanism->getName(),
            $mechanism->getResponse($this->url->getUser(), $this->url->getPass()),
            $locale
        ));
    }

    /**
     * This frame is received to setup connection preferences, like max frame size,
     * max number of channel and heartbeat delay.
     *
     * Values in the request can be lowered by client.
     *
     * @param ConnectionTune $frame
     */
    private function onConnectionTune(ConnectionTune $frame)
    {
        $negotiate = function ($a, $b) {
            return ($a * $b == 0) ? max($a, $b) : min($a, $b);
        };

        $channelMax = $negotiate($this->url->getQueryParameter('channel_max', 0), $frame->getChannelMax());
        $frameMax = $negotiate($this->url->getQueryParameter('frame_max', 0), $frame->getFrameMax());
        $heartbeat = $negotiate($this->url->getQueryParameter('heartbeat', 60), $frame->getHeartbeat());

        $this->send(new ConnectionTuneOk(0, $channelMax, $frameMax, $heartbeat));

        $this->wire->setHeartbeat(new TimeHeartbeat($heartbeat))
            ->setFrameMax($frameMax);
    }

    /**
     * This frame is received once server decide to close connection, normally because an unrecoverable error occur.
     *
     * @param ConnectionClose $frame
     *
     * @throws AMQPException
     */
    private function onConnectionClose(ConnectionClose $frame)
    {
        $this->send(new ConnectionCloseOk(0));
        $this->wire->close();

        $this->status = self::STATUS_CLOSED;

        if ($frame->getReplyCode()) {
            throw AMQPException::make($frame->getReplyText(), $frame->getReplyCode());
        }
    }

    /**
     * This frame is received once server decide to suspend connection, for example because server
     * run out of memory and can not provide service for the connection. When this happen consumer
     * suppose to suspend all activities until connection.unblocked is received.
     *
     * @param ConnectionBlocked $frame
     */
    private function onConnectionBlocked(ConnectionBlocked $frame)

    {
        $this->status = self::STATUS_BLOCKED;
    }

    /**
     * This frame is received once connection returns back to normal state after being suspended.
     * See onConnectionBlocked above.
     *
     * @param ConnectionUnblocked $frame
     */
    private function onConnectionUnblocked(ConnectionUnblocked $frame)

    {
        $this->status = self::STATUS_READY;
    }
}


Push — master ( 4725f7...79150a )

Connection::channel() B

Complexity

Size

Duplication

Code Coverage

Importance

1. Missing dependencies

2. Missing use statement

1. Missing dependencies

2. Missing use statement

1. Missing dependencies

2. Missing use statement

1. Missing dependencies

2. Missing use statement

1. Missing dependencies

2. Missing use statement

1		<?php
2
3		namespace ButterAMQP\AMQP091;
4
5		use ButterAMQP\ConnectionInterface;
6		use ButterAMQP\Exception\AMQPException;
7		use ButterAMQP\Exception\InvalidChannelNumberException;
8		use ButterAMQP\AMQP091\Framing\Frame;
9		use ButterAMQP\AMQP091\Framing\Heartbeat;
10		use ButterAMQP\AMQP091\Framing\Method\ConnectionBlocked;
11		use ButterAMQP\AMQP091\Framing\Method\ConnectionClose;
12		use ButterAMQP\AMQP091\Framing\Method\ConnectionCloseOk;
13		use ButterAMQP\AMQP091\Framing\Method\ConnectionOpen;
14		use ButterAMQP\AMQP091\Framing\Method\ConnectionOpenOk;
15		use ButterAMQP\AMQP091\Framing\Method\ConnectionStart;
16		use ButterAMQP\AMQP091\Framing\Method\ConnectionStartOk;
17		use ButterAMQP\AMQP091\Framing\Method\ConnectionTune;
18		use ButterAMQP\AMQP091\Framing\Method\ConnectionTuneOk;
19		use ButterAMQP\AMQP091\Framing\Method\ConnectionUnblocked;
20		use ButterAMQP\Heartbeat\TimeHeartbeat;
21		use ButterAMQP\Security\Authenticator;
22		use ButterAMQP\Security\AuthenticatorInterface;
23		use ButterAMQP\Url;
24		use ButterAMQP\WireInterface;
25		use ButterAMQP\WireSubscriberInterface;
26
27		class Connection implements ConnectionInterface, WireSubscriberInterface
28		{
29		const STATUS_CLOSED = 'closed';
30		const STATUS_READY = 'ready';
31		const STATUS_BLOCKED = 'blocked';
32
33		/**
34		* @var Url
35		*/
36		private $url;
37
38		/**
39		* @var WireInterface
40		*/
41		private $wire;
42
43		/**
44		* @var AuthenticatorInterface
45		*/
46		private $authenticator;
47
48		/**
49		* @var string
50		*/
51		private $status;
52
53		/**
54		* @var Channel[]
55		*/
56		private $channels = [];
57
58		/**
59		* @var array
60		*/
61		private $capabilities = [];
62
63		/**
64		* @param Url\|string $url
65		* @param WireInterface $wire
66		* @param AuthenticatorInterface $authenticator
67		*/
68	31	public function __construct(Url $url, WireInterface $wire, AuthenticatorInterface $authenticator = null)
69		{
70	31	$this->url = $url;
71	31	$this->wire = $wire;
72	31	$this->authenticator = $authenticator ?: Authenticator::build();
73	31	}
74
75		/**
76		* Connection status. See STATUS_* constants for possible values.
77		*
78		* @return string
79		*/
80	4	public function getStatus()
81		{
82	4	return $this->status;
83		}
84
85		/**
86		* {@inheritdoc}
87		*/
88	19	public function open()
89		{
90	19	$this->channels = [];
91	19	$this->capabilities = [];
92
93	19	$this->wire->open($this->url)
94	19	->subscribe(0, $this);
95
96	19	$this->wait(ConnectionTune::class);
97
98	18	$this->send(new ConnectionOpen(0, $this->url->getVhost(), '', false))
99	18	->wait(ConnectionOpenOk::class);
100
101	18	$this->status = self::STATUS_READY;
102
103	18	return $this;
104		}
105
106		/**
107		* {@inheritdoc}
108		*/
109	19	public function channel($id = null)
110		{
111	19	if ($id === null) {
112	18	$id = count($this->channels) == 0 ? 1 : max(array_keys($this->channels)) + 1;
113	18	}
114
115	19	if (!is_integer($id) \|\| $id <= 0) {
116	1	throw new InvalidChannelNumberException('Channel ID should be positive integer');
117		}
118
119	18	if (!isset($this->channels[$id])) {
120	18	$channel = $this->channels[$id] = new Channel($this->wire, $id);
121	18	$channel->open();
122	18	}
123
124	18	return $this->channels[$id];
125		}
126
127		/**
128		* {@inheritdoc}
129		*/
130	7	public function close($code = 0, $reason = '')
131		{
132	7	$this->send(new ConnectionClose(0, $code, $reason, 0, 0))
133	7	->wait(ConnectionCloseOk::class);
134
135	7	$this->status = self::STATUS_CLOSED;
136
137	7	$this->wire->close();
138
139	7	return $this;
140		}
141
142		/**
143		* {@inheritdoc}
144		*/
145	1	public function isSupported($capability)
146		{
147	1	return isset($this->capabilities[$capability]) ?
148	1	(bool) $this->capabilities[$capability] : false;
149		}
150
151		/**
152		* {@inheritdoc}
153		*/
154	10	public function serve($blocking = true)
155		{
156	10	$this->wire->next($blocking);
157
158	8	return $this;
159		}
160
161		/**
162		* Sends frame to the service channel (#0).
163		*
164		* @param Frame $frame
165		*
166		* @return $this
167		*/
168	26	private function send(Frame $frame)
169		{
170	26	$this->wire->send($frame);
171
172	26	return $this;
173		}
174
175		/**
176		* Wait for a frame in the service channel (#0).
177		*
178		* @param string\|array $type
179		*
180		* @return Frame
181		*/
182	20	private function wait($type)
183		{
184	20	return $this->wire->wait(0, $type);
185		}
186
187		/**
188		* {@inheritdoc}
189		*/
190	26	public function dispatch(Frame $frame)
191		{
192	26	if ($frame instanceof ConnectionStart) {
		1 ignored issue – show Bug introduced 2016-09-12 13:40 UTC by Report Bug Copy Issue Report The class `ButterAMQP\AMQP091\Framing\Method\ConnectionStart` does not exist. Did you forget a USE statement, or did you not list all dependencies? This error could be the result of: 1. Missing dependencies PHP Analyzer uses your `composer.json` file (if available) to determine the dependencies of your project and to determine all the available classes and functions. It expects the `composer.json` to be in the root folder of your repository. Are you sure this class is defined by one of your dependencies, or did you maybe not list a dependency in either the `require` or `require-dev` section? 2. Missing use statement PHP does not complain about undefined classes in `ìnstanceof` checks. For example, the following PHP code will work perfectly fine: if ($x instanceof DoesNotExist) { // Do something. } If you have not tested against this specific condition, such errors might go unnoticed. Loading history...
193	20	$this->onConnectionStart($frame);
194	26	} elseif ($frame instanceof ConnectionTune) {
		1 ignored issue – show Bug introduced 2016-09-12 13:40 UTC by Report Bug Copy Issue Report The class `ButterAMQP\AMQP091\Framing\Method\ConnectionTune` does not exist. Did you forget a USE statement, or did you not list all dependencies? This error could be the result of: 1. Missing dependencies PHP Analyzer uses your `composer.json` file (if available) to determine the dependencies of your project and to determine all the available classes and functions. It expects the `composer.json` to be in the root folder of your repository. Are you sure this class is defined by one of your dependencies, or did you maybe not list a dependency in either the `require` or `require-dev` section? 2. Missing use statement PHP does not complain about undefined classes in `ìnstanceof` checks. For example, the following PHP code will work perfectly fine: if ($x instanceof DoesNotExist) { // Do something. } If you have not tested against this specific condition, such errors might go unnoticed. Loading history...
195	19	$this->onConnectionTune($frame);
196	24	} elseif ($frame instanceof ConnectionClose) {
		1 ignored issue – show Bug introduced 2016-09-12 13:40 UTC by Report Bug Copy Issue Report The class `ButterAMQP\AMQP091\Framing\Method\ConnectionClose` does not exist. Did you forget a USE statement, or did you not list all dependencies? This error could be the result of: 1. Missing dependencies PHP Analyzer uses your `composer.json` file (if available) to determine the dependencies of your project and to determine all the available classes and functions. It expects the `composer.json` to be in the root folder of your repository. Are you sure this class is defined by one of your dependencies, or did you maybe not list a dependency in either the `require` or `require-dev` section? 2. Missing use statement PHP does not complain about undefined classes in `ìnstanceof` checks. For example, the following PHP code will work perfectly fine: if ($x instanceof DoesNotExist) { // Do something. } If you have not tested against this specific condition, such errors might go unnoticed. Loading history...
197	3	$this->onConnectionClose($frame);
198	20	} elseif ($frame instanceof ConnectionBlocked) {
		1 ignored issue – show Bug introduced 2016-09-12 13:40 UTC by Report Bug Copy Issue Report The class `ButterAMQP\AMQP091\Frami...ethod\ConnectionBlocked` does not exist. Did you forget a USE statement, or did you not list all dependencies? This error could be the result of: 1. Missing dependencies PHP Analyzer uses your `composer.json` file (if available) to determine the dependencies of your project and to determine all the available classes and functions. It expects the `composer.json` to be in the root folder of your repository. Are you sure this class is defined by one of your dependencies, or did you maybe not list a dependency in either the `require` or `require-dev` section? 2. Missing use statement PHP does not complain about undefined classes in `ìnstanceof` checks. For example, the following PHP code will work perfectly fine: if ($x instanceof DoesNotExist) { // Do something. } If you have not tested against this specific condition, such errors might go unnoticed. Loading history...
199	1	$this->onConnectionBlocked($frame);
200	19	} elseif ($frame instanceof ConnectionUnblocked) {
		1 ignored issue – show Bug introduced 2016-09-12 13:40 UTC by Report Bug Copy Issue Report The class `ButterAMQP\AMQP091\Frami...hod\ConnectionUnblocked` does not exist. Did you forget a USE statement, or did you not list all dependencies? This error could be the result of: 1. Missing dependencies PHP Analyzer uses your `composer.json` file (if available) to determine the dependencies of your project and to determine all the available classes and functions. It expects the `composer.json` to be in the root folder of your repository. Are you sure this class is defined by one of your dependencies, or did you maybe not list a dependency in either the `require` or `require-dev` section? 2. Missing use statement PHP does not complain about undefined classes in `ìnstanceof` checks. For example, the following PHP code will work perfectly fine: if ($x instanceof DoesNotExist) { // Do something. } If you have not tested against this specific condition, such errors might go unnoticed. Loading history...
201	1	$this->onConnectionUnblocked($frame);
202	1	}
203	25	}
204
205		/**
206		* This frame is the first frame received from server.
207		* It provides server details and requests client credentials.
208		*
209		* @param ConnectionStart $frame
210		*/
211	20	private function onConnectionStart(ConnectionStart $frame)
212		{
213	20	$properties = $frame->getServerProperties();
214
215	20	$this->capabilities = isset($properties['capabilities']) ?
216	20	$properties['capabilities'] : [];
217
218	20	$mechanism = $this->authenticator
219	20	->get(explode(' ', $frame->getMechanisms()));
220
221	20	list($locale) = explode(' ', $frame->getLocales());
222
223	20	$this->send(new ConnectionStartOk(
224	20	0,
225		[
226	20	'platform' => 'PHP '.PHP_VERSION,
227	20	'product' => 'ButterAMQP',
228	20	'version' => '0.1.0',
229		'capabilities' => [
230	20	'publisher_confirms' => true,
231	20	'exchange_exchange_bindings' => true,
232	20	'basic.nack' => true,
233	20	'connection.blocked' => true,
234	20	'consumer_cancel_notify' => true,
235	20	'authentication_failure_close' => true,
236	20	],
237	20	],
238	20	$mechanism->getName(),
239	20	$mechanism->getResponse($this->url->getUser(), $this->url->getPass()),
240		$locale
241	20	));
242	20	}
243
244		/**
245		* This frame is received to setup connection preferences, like max frame size,
246		* max number of channel and heartbeat delay.
247		*
248		* Values in the request can be lowered by client.
249		*
250		* @param ConnectionTune $frame
251		*/
252		private function onConnectionTune(ConnectionTune $frame)
253		{
254	19	$negotiate = function ($a, $b) {
255	19	return ($a * $b == 0) ? max($a, $b) : min($a, $b);
256	19	};
257
258	19	$channelMax = $negotiate($this->url->getQueryParameter('channel_max', 0), $frame->getChannelMax());
259	19	$frameMax = $negotiate($this->url->getQueryParameter('frame_max', 0), $frame->getFrameMax());
260	19	$heartbeat = $negotiate($this->url->getQueryParameter('heartbeat', 60), $frame->getHeartbeat());
261
262	19	$this->send(new ConnectionTuneOk(0, $channelMax, $frameMax, $heartbeat));
263
264	19	$this->wire->setHeartbeat(new TimeHeartbeat($heartbeat))
265	19	->setFrameMax($frameMax);
266	19	}
267
268		/**
269		* This frame is received once server decide to close connection, normally because an unrecoverable error occur.
270		*
271		* @param ConnectionClose $frame
272		*
273		* @throws AMQPException
274		*/
275	3	private function onConnectionClose(ConnectionClose $frame)
276		{
277	3	$this->send(new ConnectionCloseOk(0));
278	3	$this->wire->close();
279
280	3	$this->status = self::STATUS_CLOSED;
281
282	3	if ($frame->getReplyCode()) {
283	2	throw AMQPException::make($frame->getReplyText(), $frame->getReplyCode());
284		}
285	1	}
286
287		/**
288		* This frame is received once server decide to suspend connection, for example because server
289		* run out of memory and can not provide service for the connection. When this happen consumer
290		* suppose to suspend all activities until connection.unblocked is received.
291		*
292		* @param ConnectionBlocked $frame
293		*/
294	1	private function onConnectionBlocked(ConnectionBlocked $frame)
		1 ignored issue – show Unused Code introduced 2016-09-08 01:27 UTC by Report Bug Copy Issue Report The parameter `$frame` is not used and could be removed. This check looks from parameters that have been defined for a function or method, but which are not used in the method body. Loading history...
295		{
296	1	$this->status = self::STATUS_BLOCKED;
297	1	}
298
299		/**
300		* This frame is received once connection returns back to normal state after being suspended.
301		* See onConnectionBlocked above.
302		*
303		* @param ConnectionUnblocked $frame
304		*/
305	1	private function onConnectionUnblocked(ConnectionUnblocked $frame)
		1 ignored issue – show Unused Code introduced 2016-09-08 01:27 UTC by Report Bug Copy Issue Report The parameter `$frame` is not used and could be removed. This check looks from parameters that have been defined for a function or method, but which are not used in the method body. Loading history...
306		{
307	1	$this->status = self::STATUS_READY;
308	1	}
309		}
310

skolodyazhnyy / butter-amqplib

Push — master ( 4725f7...79150a )

Connection::channel() B

Complexity

Size

Duplication

Code Coverage

Importance

1. Missing dependencies

2. Missing use statement

1. Missing dependencies

2. Missing use statement

1. Missing dependencies

2. Missing use statement

1. Missing dependencies

2. Missing use statement

1. Missing dependencies

2. Missing use statement

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