Wire::isFrameMatch() - Code Metrics - Inspection of "Small refectoring" - skolodyazhnyy/butter-amqplib - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 9eba40...22ad49 )

by Sergey

created 2016-09-13 19:52 UTC

Wire::isFrameMatch() A

↳ Parent: Wire

Complexity

Conditions	3
Paths	3

Size

Total Lines	4
Code Lines	2

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	2
CRAP Score	3

Importance

Changes

Metric	Value
dl	0
loc	4
ccs	2
cts	2
cp	1
rs	10
c	0
b	0
f	0
cc	3
eloc	2
nc	3
nop	3
crap	3

<?php

namespace ButterAMQP\AMQP091;

use ButterAMQP\Binary;
use ButterAMQP\Buffer;
use ButterAMQP\Exception\InvalidFrameEndingException;
use ButterAMQP\AMQP091\Framing\Content;
use ButterAMQP\AMQP091\Framing\Frame;
use ButterAMQP\AMQP091\Framing\Heartbeat;
use ButterAMQP\Heartbeat\NullHeartbeat;
use ButterAMQP\HeartbeatInterface;
use ButterAMQP\IOInterface;
use ButterAMQP\Url;
use Psr\Log\LoggerAwareInterface;
use Psr\Log\LoggerAwareTrait;
use Psr\Log\NullLogger;

class Wire implements WireInterface, LoggerAwareInterface
{
    const PROTOCOL_HEADER = "AMQP\x00\x00\x09\x01";
    const FRAME_ENDING = "\xCE";

    use LoggerAwareTrait;

    /**
     * @var IOInterface
     */
    private $io;

    /**
     * @var WireSubscriberInterface[]
     */
    private $subscribers = [];

    /**
     * @var HeartbeatInterface
     */
    private $heartbeat;

    /**
     * @var int
     */
    private $frameMax;

    /**
     * @param IOInterface $io
     */
    public function __construct(IOInterface $io)
    {
        $this->io = $io;
        $this->logger = new NullLogger();
        $this->heartbeat = new NullHeartbeat();
    }

    /**
     * {@inheritdoc}
     */
    public function open(Url $url)
    {
        $this->subscribers = [];

        $this->io->open(
            $this->getProtocolForScheme($url),
            $url->getHost(),
            $url->getPort(),
            $url->getQuery()
        );

        $this->io->write(self::PROTOCOL_HEADER);

        // @todo: peek next 8 bytes and check if its a frame or "wrong protocol" reply

        return $this;
    }

    /**
     * {@inheritdoc}
     */
    public function next($blocking = true)
    {
        if ($this->heartbeat->shouldSendHeartbeat()) {
            $this->send(new Heartbeat(0));
        }

        if (($peek = $this->io->peek(7, $blocking)) === null) {
            return null;
        }

        $header = unpack('Ctype/nchannel/Nsize', $peek);

        if (($data = $this->io->read($header['size'] + 8, $blocking)) === null) {
            return null;
        }

        $end = $data[strlen($data) - 1];

        if ($end != self::FRAME_ENDING) {
            throw new InvalidFrameEndingException(sprintf('Invalid frame ending (%d)', Binary::unpack('c', $end)));
        }

        $frame = Frame::decode(new Buffer($data));

        $this->dispatch($frame);

        $this->heartbeat->serverBeat();

        return $frame;
    }

    /**
     * @param Frame $frame
     */
    private function dispatch(Frame $frame)
    {
        if ($subscriber = $this->getSubscriber($frame->getChannel())) {
            $subscriber->dispatch($frame);
        }
    }

    /**
     * {@inheritdoc}
     */
    public function send(Frame $frame)
    {
        $this->heartbeat->clientBeat();

        foreach ($this->chop($frame) as $piece) {
            $this->io->write($piece->encode());
        }

        return $this;
    }

    /**
     * @param Frame $frame
     *
     * @return array
     */
    private function chop(Frame $frame)
    {
        if (!$this->frameMax || !$frame instanceof Content) {
            return [$frame];
        }

        $frames = [];
        $data = $frame->getData();
        $size = $this->frameMax - 8;
        $chunks = ceil(strlen($data) / $size);

        for ($c = 0; $c < $chunks; ++$c) {
            $frames[] = new Content($frame->getChannel(), substr($data, $c * $size, $size));
        }

        return $frames;
    }

    /**
     * {@inheritdoc}
     */
    public function wait($channel, $types)
    {
        if (!is_array($types)) {
            $types = [$types];
        }

        do {
            $frame = $this->next(true);
        } while (!$this->isFrameMatch($frame, $channel, $types));

        return $frame;
    }

    /**
     * @param Frame $frame
     * @param int   $channel
     * @param array $types
     *
     * @return bool
     */
    private function isFrameMatch(Frame $frame = null, $channel = 0, array $types = [])
    {
        return $frame && $frame->getChannel() == $channel && in_array(get_class($frame), $types);
    }

    /**
     * {@inheritdoc}
     */
    public function subscribe($channel, WireSubscriberInterface $handler)
    {
        $this->subscribers[$channel] = $handler;

        return $this;
    }

    /**
     * {@inheritdoc}
     */
    public function close()
    {
        $this->io->close();

        return $this;
    }

    /**
     * @param HeartbeatInterface $heartbeat
     *
     * @return $this
     */
    public function setHeartbeat(HeartbeatInterface $heartbeat)
    {
        $this->heartbeat = $heartbeat;

        return $this;
    }

    /**
     * @param int $frameMax
     *
     * @return $this
     */
    public function setFrameMax($frameMax)
    {
        $this->frameMax = $frameMax;

        return $this;
    }

    /**
     * @param int $channel
     *
     * @return WireSubscriberInterface|null
     */
    private function getSubscriber($channel)
    {
        return isset($this->subscribers[$channel]) ? $this->subscribers[$channel] : null;
    }

    /**
     * @param Url $url
     *
     * @return string
     */
    private function getProtocolForScheme(Url $url)
    {
        return strcasecmp($url->getScheme(), 'amqps') == 0 ? 'ssl' : 'tcp';
    }
}


1		<?php
2
3		namespace ButterAMQP\AMQP091;
4
5		use ButterAMQP\Binary;
6		use ButterAMQP\Buffer;
7		use ButterAMQP\Exception\InvalidFrameEndingException;
8		use ButterAMQP\AMQP091\Framing\Content;
9		use ButterAMQP\AMQP091\Framing\Frame;
10		use ButterAMQP\AMQP091\Framing\Heartbeat;
11		use ButterAMQP\Heartbeat\NullHeartbeat;
12		use ButterAMQP\HeartbeatInterface;
13		use ButterAMQP\IOInterface;
14		use ButterAMQP\Url;
15		use Psr\Log\LoggerAwareInterface;
16		use Psr\Log\LoggerAwareTrait;
17		use Psr\Log\NullLogger;
18
19		class Wire implements WireInterface, LoggerAwareInterface
20		{
21		const PROTOCOL_HEADER = "AMQP\x00\x00\x09\x01";
22		const FRAME_ENDING = "\xCE";
23
24		use LoggerAwareTrait;
25
26		/**
27		* @var IOInterface
28		*/
29		private $io;
30
31		/**
32		* @var WireSubscriberInterface[]
33		*/
34		private $subscribers = [];
35
36		/**
37		* @var HeartbeatInterface
38		*/
39		private $heartbeat;
40
41		/**
42		* @var int
43		*/
44		private $frameMax;
45
46		/**
47		* @param IOInterface $io
48		*/
49	33	public function __construct(IOInterface $io)
50		{
51	33	$this->io = $io;
52	33	$this->logger = new NullLogger();
53	33	$this->heartbeat = new NullHeartbeat();
54	33	}
55
56		/**
57		* {@inheritdoc}
58		*/
59	19	public function open(Url $url)
60		{
61	19	$this->subscribers = [];
62
63	19	$this->io->open(
64	19	$this->getProtocolForScheme($url),
65	19	$url->getHost(),
66	19	$url->getPort(),
67	19	$url->getQuery()
68	19	);
69
70	19	$this->io->write(self::PROTOCOL_HEADER);
71
72		// @todo: peek next 8 bytes and check if its a frame or "wrong protocol" reply
73
74	19	return $this;
75		}
76
77		/**
78		* {@inheritdoc}
79		*/
80	28	public function next($blocking = true)
81		{
82	28	if ($this->heartbeat->shouldSendHeartbeat()) {
83	1	$this->send(new Heartbeat(0));
84	1	}
85
86	28	if (($peek = $this->io->peek(7, $blocking)) === null) {
87	2	return null;
88		}
89
90	26	$header = unpack('Ctype/nchannel/Nsize', $peek);
91
92	26	if (($data = $this->io->read($header['size'] + 8, $blocking)) === null) {
93	3	return null;
94		}
95
96	24	$end = $data[strlen($data) - 1];
97
98	24	if ($end != self::FRAME_ENDING) {
99	1	throw new InvalidFrameEndingException(sprintf('Invalid frame ending (%d)', Binary::unpack('c', $end)));
100		}
101
102	23	$frame = Frame::decode(new Buffer($data));
103
104	23	$this->dispatch($frame);
105
106	23	$this->heartbeat->serverBeat();
107
108	23	return $frame;
109		}
110
111		/**
112		* @param Frame $frame
113		*/
114	23	private function dispatch(Frame $frame)
115		{
116	23	if ($subscriber = $this->getSubscriber($frame->getChannel())) {
117	19	$subscriber->dispatch($frame);
118	19	}
119	23	}
120
121		/**
122		* {@inheritdoc}
123		*/
124	22	public function send(Frame $frame)
125		{
126	22	$this->heartbeat->clientBeat();
127
128	22	foreach ($this->chop($frame) as $piece) {
129	22	$this->io->write($piece->encode());
130	22	}
131
132	22	return $this;
133		}
134
135		/**
136		* @param Frame $frame
137		*
138		* @return array
139		*/
140	22	private function chop(Frame $frame)
141		{
142	22	if (!$this->frameMax \|\| !$frame instanceof Content) {
143	21	return [$frame];
144		}
145
146	15	$frames = [];
147	15	$data = $frame->getData();
148	15	$size = $this->frameMax - 8;
149	15	$chunks = ceil(strlen($data) / $size);
150
151	15	for ($c = 0; $c < $chunks; ++$c) {
152	8	$frames[] = new Content($frame->getChannel(), substr($data, $c * $size, $size));
153	8	}
154
155	15	return $frames;
156		}
157
158		/**
159		* {@inheritdoc}
160		*/
161	20	public function wait($channel, $types)
162		{
163	20	if (!is_array($types)) {
164	19	$types = [$types];
165	19	}
166
167		do {
168	20	$frame = $this->next(true);
169	20	} while (!$this->isFrameMatch($frame, $channel, $types));
170
171	19	return $frame;
172		}
173
174		/**
175		* @param Frame $frame
176		* @param int $channel
177		* @param array $types
178		*
179		* @return bool
180		*/
181	20	private function isFrameMatch(Frame $frame = null, $channel = 0, array $types = [])
182		{
183	20	return $frame && $frame->getChannel() == $channel && in_array(get_class($frame), $types);
184		}
185
186		/**
187		* {@inheritdoc}
188		*/
189	19	public function subscribe($channel, WireSubscriberInterface $handler)
190		{
191	19	$this->subscribers[$channel] = $handler;
192
193	19	return $this;
194		}
195
196		/**
197		* {@inheritdoc}
198		*/
199	8	public function close()
200		{
201	8	$this->io->close();
202
203	8	return $this;
204		}
205
206		/**
207		* @param HeartbeatInterface $heartbeat
208		*
209		* @return $this
210		*/
211	20	public function setHeartbeat(HeartbeatInterface $heartbeat)
212		{
213	20	$this->heartbeat = $heartbeat;
214
215	20	return $this;
216	1	}
217
218		/**
219		* @param int $frameMax
220		*
221		* @return $this
222		*/
223	18	public function setFrameMax($frameMax)
224		{
225	18	$this->frameMax = $frameMax;
226
227	18	return $this;
228		}
229
230		/**
231		* @param int $channel
232		*
233		* @return WireSubscriberInterface\|null
234		*/
235	23	private function getSubscriber($channel)
236		{
237	23	return isset($this->subscribers[$channel]) ? $this->subscribers[$channel] : null;
238		}
239
240		/**
241		* @param Url $url
242		*
243		* @return string
244		*/
245	19	private function getProtocolForScheme(Url $url)
246		{
247	19	return strcasecmp($url->getScheme(), 'amqps') == 0 ? 'ssl' : 'tcp';
248		}
249		}
250

skolodyazhnyy / butter-amqplib

Push — master ( 9eba40...22ad49 )

Wire::isFrameMatch() A

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