CURLPool::sleepUntilNearestTime() - Code Metrics - Inspection of "Updated CHANGELOG" - mpyw/co - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 78e369...c8939c )

by Ryosuke

created 2016-07-19 15:33 UTC

CURLPool::sleepUntilNearestTime() B

↳ Parent: CURLPool

Complexity

Conditions	6
Paths	8

Size

Total Lines	17
Code Lines	11

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	13
CRAP Score	6

Importance

Changes	1
Bugs	0	Features	1

Metric	Value
c	1
b	0
f	1
dl	0
loc	17
ccs	13
cts	13
cp	1
rs	8.8571
cc	6
eloc	11
nc	8
nop	0
crap	6

<?php

namespace mpyw\Co\Internal;
use mpyw\Co\Co;
use mpyw\Co\Internal\CoOption;
use mpyw\Co\CURLException;
use mpyw\RuntimePromise\Deferred;

class CURLPool
{
    /**
     * Options.
     * @var CoOption
     */
    private $options;

    /**
     * cURL multi handle.
     * @var resource
     */
    private $mh;

    /**
     * cURL handles those have not been dispatched.
     * @var array
     */
    private $queue = [];

    /**
     * cURL handles those have been already dispatched.
     * @var array
     */
    private $added = [];

    /**
     * Delays to be ended at.
     * @var array
     */
    private $untils = [];

    /**
     * React Deferreds.
     * @var Deferred
     */
    private $deferreds = [];

    /**
     * Constructor.
     * Initialize cURL multi handle.
     * @param CoOption $options
     */
    public function __construct(CoOption $options)
    {
        $this->options = $options;
        $this->mh = curl_multi_init();
        $flags = (int)$options['pipeline'] + (int)$options['multiplex'] * 2;
        curl_multi_setopt($this->mh, CURLMOPT_PIPELINING, $flags);
    }

    /**
     * Call curl_multi_add_handle() or push into queue.
     * @param resource $ch
     * @param Deferred $deferred
     */
    public function addOrEnqueue($ch, Deferred $deferred = null)
    {
        if (isset($this->added[(string)$ch]) || isset($this->queue[(string)$ch])) {
            throw new \InvalidArgumentException("The cURL handle is already enqueued: $ch");
        }
        if (count($this->added) >= $this->options['concurrency']) {
            $this->queue[(string)$ch] = $ch;
            $deferred && $this->deferreds[(string)$ch] = $deferred;
            return;
        }
        $errno = curl_multi_add_handle($this->mh, $ch);
        if ($errno !== CURLM_OK) {
            // @codeCoverageIgnoreStart
            $msg = curl_multi_strerror($errno) . ": $ch";
            $deferred && $deferred->reject(new \RuntimeException($msg));
            return;
            // @codeCoverageIgnoreEnd
        }
        $this->added[(string)$ch] = $ch;
        $deferred && $this->deferreds[(string)$ch] = $deferred;
    }

    /**
     * Add delay.
     * @param int      $time
     * @param Deferred $deferred
     */
    public function addDelay($time, Deferred $deferred)
    {
        $time = filter_var($time, FILTER_VALIDATE_FLOAT);
        if ($time === false || $time < 0) {
            throw new \InvalidArgumentException('Delay must be positive number.');
        }
        $now = microtime(true);
        $until = $now + $time;
        $diff = $until - $now;
        if ($diff <= 0.0) {
            // @codeCoverageIgnoreStart
            $deferred->resolve(null);
            return;
            // @codeCoverageIgnoreEnd
        }
        do {
            $id = uniqid();
        } while (isset($this->untils[$id]));
        $this->untils[$id] = $until;
        $this->deferreds[$id] = $deferred;
    }

    /**
     * Run curl_multi_exec() loop.
     */
    public function wait()
    {
        curl_multi_exec($this->mh, $active); // Start requests.
        do {
            if ($this->added || $this->queue) {
                // if cURL handle is running, use curl_multi_select()
                curl_multi_select($this->mh, $this->options['interval']) < 0
                && usleep($this->options['interval'] * 1000000);
            } else {
                // otherwise, just sleep until nearest time
                $this->sleepUntilNearestTime();
            }
            curl_multi_exec($this->mh, $active);
            $this->consumeCurlsAndUntils();
        } while ($this->added || $this->queue || $this->untils);
        // All request must be done when reached here.
        if ($active) {
            // @codeCoverageIgnoreStart
            throw new \LogicException('Unreachable statement.');
            // @codeCoverageIgnoreEnd
        }
    }

    /**
     * Sleep at least required.
     */
    private function sleepUntilNearestTime()
    {
        $now = microtime(true);
        $min = null;
        foreach ($this->untils as $id => $until) {
            $diff = $now - $until;
            if ($diff < 0) {
                continue;
            }
            if ($min === null || $diff < $min) {
                $min = $diff;
            }
        }
        if ($min !== null) {
            usleep($min * 1000000);
        }
    }

    /**
     * Consume completed cURL handles and delays.
     */
    private function consumeCurlsAndUntils()
    {
        $entries = [];
        // First, we have to poll completed entries
        // DO NOT call curl_multi_add_handle() until polling done
        while ($entry = curl_multi_info_read($this->mh)) {
            $entries[] = $entry;
        }
        // Remove entry from multi handle to consume queue if available
        foreach ($entries as $entry) {
            curl_multi_remove_handle($this->mh, $entry['handle']);
            unset($this->added[(string)$entry['handle']]);
            if ($this->queue) {
                $ch = array_shift($this->queue);
                $this->addOrEnqueue($ch);
            }
        }
        // Now we check specified delay time elapsed
        foreach ($this->untils as $id => $until) {
            $diff = $until - microtime(true);
            if ($diff <= 0.0 && isset($this->deferreds[$id])) {
                $deferred = $this->deferreds[$id];
                unset($this->deferreds[$id], $this->untils[$id]);
                $deferred->resolve(null);
            }
        }
        // Finally, resolve cURL responses
        foreach ($entries as $entry) {
            $r = $entry['result'] === CURLE_OK
                ? curl_multi_getcontent($entry['handle'])
                : new CURLException(curl_error($entry['handle']), $entry['result'], $entry['handle']);
            if (isset($this->deferreds[(string)$entry['handle']])) {
                $deferred = $this->deferreds[(string)$entry['handle']];
                unset($this->deferreds[(string)$entry['handle']]);
                $r instanceof CURLException ? $deferred->reject($r) : $deferred->resolve($r);
            }
        }
    }
}


1		<?php
2
3		namespace mpyw\Co\Internal;
4		use mpyw\Co\Co;
5		use mpyw\Co\Internal\CoOption;
6		use mpyw\Co\CURLException;
7		use mpyw\RuntimePromise\Deferred;
8
9		class CURLPool
10		{
11		/**
12		* Options.
13		* @var CoOption
14		*/
15		private $options;
16
17		/**
18		* cURL multi handle.
19		* @var resource
20		*/
21		private $mh;
22
23		/**
24		* cURL handles those have not been dispatched.
25		* @var array
26		*/
27		private $queue = [];
28
29		/**
30		* cURL handles those have been already dispatched.
31		* @var array
32		*/
33		private $added = [];
34
35		/**
36		* Delays to be ended at.
37		* @var array
38		*/
39		private $untils = [];
40
41		/**
42		* React Deferreds.
43		* @var Deferred
44		*/
45		private $deferreds = [];
46
47		/**
48		* Constructor.
49		* Initialize cURL multi handle.
50		* @param CoOption $options
51		*/
52	17	public function __construct(CoOption $options)
53	17	{
54	17	$this->options = $options;
55	17	$this->mh = curl_multi_init();
56	17	$flags = (int)$options['pipeline'] + (int)$options['multiplex'] * 2;
57	17	curl_multi_setopt($this->mh, CURLMOPT_PIPELINING, $flags);
58	17	}
59
60		/**
61		* Call curl_multi_add_handle() or push into queue.
62		* @param resource $ch
63		* @param Deferred $deferred
64		*/
65	9	public function addOrEnqueue($ch, Deferred $deferred = null)
66	9	{
67	9	if (isset($this->added[(string)$ch]) \|\| isset($this->queue[(string)$ch])) {
68	3	throw new \InvalidArgumentException("The cURL handle is already enqueued: $ch");
69		}
70	9	if (count($this->added) >= $this->options['concurrency']) {
71	2	$this->queue[(string)$ch] = $ch;
72	2	$deferred && $this->deferreds[(string)$ch] = $deferred;
73	2	return;
74		}
75	9	$errno = curl_multi_add_handle($this->mh, $ch);
76	9	if ($errno !== CURLM_OK) {
77		// @codeCoverageIgnoreStart
78		$msg = curl_multi_strerror($errno) . ": $ch";
79		$deferred && $deferred->reject(new \RuntimeException($msg));
80		return;
81		// @codeCoverageIgnoreEnd
82		}
83	9	$this->added[(string)$ch] = $ch;
84	9	$deferred && $this->deferreds[(string)$ch] = $deferred;
85	9	}
86
87		/**
88		* Add delay.
89		* @param int $time
90		* @param Deferred $deferred
91		*/
92	3	public function addDelay($time, Deferred $deferred)
93	3	{
94	3	$time = filter_var($time, FILTER_VALIDATE_FLOAT);
95	3	if ($time === false \|\| $time < 0) {
96	1	throw new \InvalidArgumentException('Delay must be positive number.');
97		}
98	2	$now = microtime(true);
99	2	$until = $now + $time;
100	2	$diff = $until - $now;
101	2	if ($diff <= 0.0) {
102		// @codeCoverageIgnoreStart
103		$deferred->resolve(null);
104		return;
105		// @codeCoverageIgnoreEnd
106		}
107		do {
108	2	$id = uniqid();
109	2	} while (isset($this->untils[$id]));
110	2	$this->untils[$id] = $until;
111	2	$this->deferreds[$id] = $deferred;
112	2	}
113
114		/**
115		* Run curl_multi_exec() loop.
116		*/
117	11	public function wait()
118	11	{
119	11	curl_multi_exec($this->mh, $active); // Start requests.
120		do {
121	11	if ($this->added \|\| $this->queue) {
122		// if cURL handle is running, use curl_multi_select()
123	6	curl_multi_select($this->mh, $this->options['interval']) < 0
124	6	&& usleep($this->options['interval'] * 1000000);
125		} else {
126		// otherwise, just sleep until nearest time
127	6	$this->sleepUntilNearestTime();
128		}
129	11	curl_multi_exec($this->mh, $active);
130	11	$this->consumeCurlsAndUntils();
131	11	} while ($this->added \|\| $this->queue \|\| $this->untils);
132		// All request must be done when reached here.
133	11	if ($active) {
134		// @codeCoverageIgnoreStart
135		throw new \LogicException('Unreachable statement.');
136		// @codeCoverageIgnoreEnd
137		}
138	11	}
139
140		/**
141		* Sleep at least required.
142		*/
143	6	private function sleepUntilNearestTime()
144	6	{
145	6	$now = microtime(true);
146	6	$min = null;
147	6	foreach ($this->untils as $id => $until) {
148	2	$diff = $now - $until;
149	2	if ($diff < 0) {
150	2	continue;
151		}
152	1	if ($min === null \|\| $diff < $min) {
153	1	$min = $diff;
154		}
155		}
156	6	if ($min !== null) {
157	1	usleep($min * 1000000);
158		}
159	6	}
160
161		/**
162		* Consume completed cURL handles and delays.
163		*/
164	11	private function consumeCurlsAndUntils()
165	11	{
166	11	$entries = [];
167		// First, we have to poll completed entries
168		// DO NOT call curl_multi_add_handle() until polling done
169	11	while ($entry = curl_multi_info_read($this->mh)) {
170	6	$entries[] = $entry;
171		}
172		// Remove entry from multi handle to consume queue if available
173	11	foreach ($entries as $entry) {
174	6	curl_multi_remove_handle($this->mh, $entry['handle']);
175	6	unset($this->added[(string)$entry['handle']]);
176	6	if ($this->queue) {
177	1	$ch = array_shift($this->queue);
178	6	$this->addOrEnqueue($ch);
179		}
180		}
181		// Now we check specified delay time elapsed
182	11	foreach ($this->untils as $id => $until) {
183	2	$diff = $until - microtime(true);
184	2	if ($diff <= 0.0 && isset($this->deferreds[$id])) {
185	2	$deferred = $this->deferreds[$id];
186	2	unset($this->deferreds[$id], $this->untils[$id]);
187	2	$deferred->resolve(null);
188		}
189		}
190		// Finally, resolve cURL responses
191	11	foreach ($entries as $entry) {
192	6	$r = $entry['result'] === CURLE_OK
193	6	? curl_multi_getcontent($entry['handle'])
194	6	: new CURLException(curl_error($entry['handle']), $entry['result'], $entry['handle']);
195	6	if (isset($this->deferreds[(string)$entry['handle']])) {
196	6	$deferred = $this->deferreds[(string)$entry['handle']];
197	6	unset($this->deferreds[(string)$entry['handle']]);
198	6	$r instanceof CURLException ? $deferred->reject($r) : $deferred->resolve($r);
199		}
200		}
201	11	}
202		}
203

mpyw / co

Push — master ( 78e369...c8939c )

CURLPool::sleepUntilNearestTime() B

Complexity

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Duplication

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