Profiler::setEnabled() - Code Metrics - Inspection of "Increase code coverage" - yiisoft/profiler - Measure and Improve Code Quality continuously with Scrutinizer

Passed

Pull Request — master (#19)

by Rustam

created 2020-12-09 14:41 UTC

Profiler::setEnabled() A

↳ Parent: Profiler::setTargets()

Complexity

Conditions	1
Paths	1

Size

Total Lines	3
Code Lines	1

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	2
CRAP Score	1

Importance

Changes

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

<?php

declare(strict_types=1);

namespace Yiisoft\Profiler;

use Psr\Log\LoggerInterface;
use Psr\Log\LogLevel;

/**
 * Profiler provides profiling support. It stores profiling messages in the memory and sends them to different targets
 * according to {@see Profiler::$targets}.
 *
 * For more details and usage information on Profiler, see the [guide article on profiling](guide:runtime-profiling)
 */
final class Profiler implements ProfilerInterface
{
    /**
     * @var bool whether to profiler is enabled. Defaults to true.
     * You may use this field to disable writing of the profiling messages and thus save the memory usage.
     */
    private bool $enabled = true;

    /**
     * @var Message[] complete profiling messages.
     * Each message has a following keys:
     *
     * - message: string, profiling token.
     * - category: string, message category.
     * - nestedLevel: int, profiling message nested level.
     * - beginTime: float, profiling begin timestamp obtained by microtime(true).
     * - endTime: float, profiling end timestamp obtained by microtime(true).
     * - duration: float, profiling block duration in milliseconds.
     * - beginMemory: int, memory usage at the beginning of profile block in bytes, obtained by `memory_get_usage()`.
     * - endMemory: int, memory usage at the end of profile block in bytes, obtained by `memory_get_usage()`.
     * - memoryDiff: int, a diff between 'endMemory' and 'beginMemory'.
     */
    private array $messages = [];

    /**
     * @var LoggerInterface logger to be used for message export.
     */
    private LoggerInterface $logger;

    /**
     * @var array pending profiling messages, e.g. the ones which have begun but not ended yet.
     */
    private array $pendingMessages = [];

    /**
     * @var int current profiling messages nested level.
     */
    private int $nestedLevel = 0;

    /**
     * @var array|Target[] the profiling targets. Each array element represents a single {@see Target} instance.
     */
    private array $targets = [];

    /**
     * Initializes the profiler by registering {@see flush()} as a shutdown function.
     *
     * @param LoggerInterface $logger
     * @param array $targets
     */
    public function __construct(LoggerInterface $logger, array $targets = [])
    {
        $this->logger = $logger;
        $this->setTargets($targets);
        register_shutdown_function([$this, 'flush']);
    }

    public function enable(): self
    {
        $this->enabled = true;
        return $this;
    }

    public function disable(): self
    {
        $this->enabled = false;
        return $this;
    }

    /**
     * @return bool the profile enabled.
     *
     * {@see enabled}
     */
    public function isEnabled(): bool
    {
        return $this->enabled;
    }

    /**
     * @return Message[] the messages profiler.
     */
    public function getMessages(): array
    {
        return $this->messages;
    }

    /**
     * @return Target[] the profiling targets. Each array element represents a single {@see Target|profiling target}
     * instance.
     */
    public function getTargets(): array
    {
        return $this->targets;
    }

    /**
     * @param Target[] $targets the profiling targets. Each array element represents a single {@see Target} instance.
     */
    private function setTargets(array $targets): void
    {
        foreach ($targets as $name => $target) {
            if (!$target instanceof Target) {
                throw new \InvalidArgumentException(
                    'Target should be \Yiisoft\Profiler\Target instance. "' . get_class($target) . '" given.'
                );
            }
        }
        $this->targets = $targets;
    }

    public function begin(string $token, array $context = []): void
    {
        if (!$this->enabled) {
            return;
        }

        $category = $context['category'] ?? 'application';
        $context = array_merge(
            $context,
            [
                'token' => $token,
                'category' => $category,
                'nestedLevel' => $this->nestedLevel,
                'time' => microtime(true),
                'beginTime' => microtime(true),
                'beginMemory' => memory_get_usage(),
            ]
        );

        $message = new Message($category, $token, $context);

        $this->pendingMessages[$category][$token][] = $message;
        $this->nestedLevel++;
    }

    public function end(string $token, array $context = []): void
    {
        if (!$this->enabled) {
            return;
        }

        $category = $context['category'] ?? 'application';

        if (empty($this->pendingMessages[$category][$token])) {
            throw new \RuntimeException(
                sprintf(
                    'Unexpected %s::end() call for category "%s" token "%s". A matching begin() is not found.',
                    self::class,
                    $category,
                    $token
                )
            );
        }

        /** @var Message $message */
        $message = array_pop($this->pendingMessages[$category][$token]);
        if (empty($this->pendingMessages[$category][$token])) {
            unset($this->pendingMessages[$category][$token]);

            if (empty($this->pendingMessages[$category])) {
                unset($this->pendingMessages[$category]);
            }
        }

        $context = array_merge(
            $message->context(),
            $context,
            [
                'endTime' => microtime(true),
                'endMemory' => memory_get_usage(),
            ]
        );

        $context['duration'] = $context['endTime'] - $context['beginTime'];
        $context['memoryDiff'] = $context['endMemory'] - $context['beginMemory'];

        $this->messages[] = new Message($category, $message->message(), $context);
        $this->nestedLevel--;
    }

    public function flush(): void
    {
        foreach ($this->pendingMessages as $category => $categoryMessages) {
            $this->logCategoryMessages($category, $categoryMessages);
        }

        $this->pendingMessages = [];
        $this->nestedLevel = 0;

        if (empty($this->messages)) {
            return;
        }

        $messages = $this->messages;

        // new messages could appear while the existing ones are being handled by targets
        $this->messages = [];

        $this->dispatch($messages);
    }

    /**
     * Dispatches the profiling messages to {@see targets}.
     *
     * @param array $messages the profiling messages.
     */
    private function dispatch(array $messages): void
    {
        foreach ($this->targets as $target) {
            $target->collect($messages);
        }
    }

    /**
     * @param string $category
     * @param array $categoryMessages
     */
    private function logCategoryMessages(string $category, array $categoryMessages): void
    {
        foreach ($categoryMessages as $token => $messages) {
            if (!empty($messages)) {
                $this->logger->log(
                    LogLevel::WARNING,
                    sprintf(
                        'Unclosed profiling entry detected: category "%s" token "%s" %s',
                        $category,
                        $token,
                        __METHOD__
                    )
                );
            }
        }
    }
}


1		<?php
2
3		declare(strict_types=1);
4
5		namespace Yiisoft\Profiler;
6
7		use Psr\Log\LoggerInterface;
8		use Psr\Log\LogLevel;
9
10		/**
11		* Profiler provides profiling support. It stores profiling messages in the memory and sends them to different targets
12		* according to {@see Profiler::$targets}.
13		*
14		* For more details and usage information on Profiler, see the [guide article on profiling](guide:runtime-profiling)
15		*/
16		final class Profiler implements ProfilerInterface
17		{
18		/**
19		* @var bool whether to profiler is enabled. Defaults to true.
20		* You may use this field to disable writing of the profiling messages and thus save the memory usage.
21		*/
22		private bool $enabled = true;
23
24		/**
25		* @var Message[] complete profiling messages.
26		* Each message has a following keys:
27		*
28		* - message: string, profiling token.
29		* - category: string, message category.
30		* - nestedLevel: int, profiling message nested level.
31		* - beginTime: float, profiling begin timestamp obtained by microtime(true).
32		* - endTime: float, profiling end timestamp obtained by microtime(true).
33		* - duration: float, profiling block duration in milliseconds.
34		* - beginMemory: int, memory usage at the beginning of profile block in bytes, obtained by `memory_get_usage()`.
35		* - endMemory: int, memory usage at the end of profile block in bytes, obtained by `memory_get_usage()`.
36		* - memoryDiff: int, a diff between 'endMemory' and 'beginMemory'.
37		*/
38		private array $messages = [];
39
40		/**
41		* @var LoggerInterface logger to be used for message export.
42		*/
43		private LoggerInterface $logger;
44
45		/**
46		* @var array pending profiling messages, e.g. the ones which have begun but not ended yet.
47		*/
48		private array $pendingMessages = [];
49
50		/**
51		* @var int current profiling messages nested level.
52		*/
53		private int $nestedLevel = 0;
54
55		/**
56		* @var array\|Target[] the profiling targets. Each array element represents a single {@see Target} instance.
57		*/
58		private array $targets = [];
59
60		/**
61		* Initializes the profiler by registering {@see flush()} as a shutdown function.
62		*
63		* @param LoggerInterface $logger
64		* @param array $targets
65		*/
66	9	public function __construct(LoggerInterface $logger, array $targets = [])
67		{
68	9	$this->logger = $logger;
69	9	$this->setTargets($targets);
70	8	register_shutdown_function([$this, 'flush']);
71	8	}
72
73	1	public function enable(): self
74		{
75	1	$this->enabled = true;
76	1	return $this;
77		}
78
79	1	public function disable(): self
80		{
81	1	$this->enabled = false;
82	1	return $this;
83		}
84
85		/**
86		* @return bool the profile enabled.
87		*
88		* {@see enabled}
89		*/
90	1	public function isEnabled(): bool
91		{
92	1	return $this->enabled;
93		}
94
95		/**
96		* @return Message[] the messages profiler.
97		*/
98	6	public function getMessages(): array
99		{
100	6	return $this->messages;
101		}
102
103		/**
104		* @return Target[] the profiling targets. Each array element represents a single {@see Target\|profiling target}
105		* instance.
106		*/
107	1	public function getTargets(): array
108		{
109	1	return $this->targets;
110		}
111
112		/**
113		* @param Target[] $targets the profiling targets. Each array element represents a single {@see Target} instance.
114		*/
115	10	private function setTargets(array $targets): void
116		{
117	10	foreach ($targets as $name => $target) {
118	3	if (!$target instanceof Target) {
119	1	throw new \InvalidArgumentException(
120	1	'Target should be \Yiisoft\Profiler\Target instance. "' . get_class($target) . '" given.'
121		);
122		}
123		}
124	9	$this->targets = $targets;
125	9	}
126
127	6	public function begin(string $token, array $context = []): void
128		{
129	6	if (!$this->enabled) {
130	1	return;
131		}
132
133	6	$category = $context['category'] ?? 'application';
134	6	$context = array_merge(
135	6	$context,
136		[
137	6	'token' => $token,
138	6	'category' => $category,
139	6	'nestedLevel' => $this->nestedLevel,
140	6	'time' => microtime(true),
141	6	'beginTime' => microtime(true),
142	6	'beginMemory' => memory_get_usage(),
143		]
144		);
145
146	6	$message = new Message($category, $token, $context);
147
148	6	$this->pendingMessages[$category][$token][] = $message;
149	6	$this->nestedLevel++;
150	6	}
151
152	6	public function end(string $token, array $context = []): void
153		{
154	6	if (!$this->enabled) {
155	1	return;
156		}
157
158	6	$category = $context['category'] ?? 'application';
159
160	6	if (empty($this->pendingMessages[$category][$token])) {
161	1	throw new \RuntimeException(
162	1	sprintf(
163	1	'Unexpected %s::end() call for category "%s" token "%s". A matching begin() is not found.',
164	1	self::class,
165		$category,
166		$token
167		)
168		);
169		}
170
171		/** @var Message $message */
172	5	$message = array_pop($this->pendingMessages[$category][$token]);
173	5	if (empty($this->pendingMessages[$category][$token])) {
174	5	unset($this->pendingMessages[$category][$token]);
175
176	5	if (empty($this->pendingMessages[$category])) {
177	5	unset($this->pendingMessages[$category]);
178		}
179		}
180
181	5	$context = array_merge(
182	5	$message->context(),
183		$context,
184		[
185	5	'endTime' => microtime(true),
186	5	'endMemory' => memory_get_usage(),
187		]
188		);
189
190	5	$context['duration'] = $context['endTime'] - $context['beginTime'];
191	5	$context['memoryDiff'] = $context['endMemory'] - $context['beginMemory'];
192
193	5	$this->messages[] = new Message($category, $message->message(), $context);
194	5	$this->nestedLevel--;
195	5	}
196
197	4	public function flush(): void
198		{
199	4	foreach ($this->pendingMessages as $category => $categoryMessages) {
200	1	$this->logCategoryMessages($category, $categoryMessages);
201		}
202
203	4	$this->pendingMessages = [];
204	4	$this->nestedLevel = 0;
205
206	4	if (empty($this->messages)) {
207	2	return;
208		}
209
210	2	$messages = $this->messages;
211
212		// new messages could appear while the existing ones are being handled by targets
213	2	$this->messages = [];
214
215	2	$this->dispatch($messages);
216	2	}
217
218		/**
219		* Dispatches the profiling messages to {@see targets}.
220		*
221		* @param array $messages the profiling messages.
222		*/
223	2	private function dispatch(array $messages): void
224		{
225	2	foreach ($this->targets as $target) {
226	1	$target->collect($messages);
227		}
228	2	}
229
230		/**
231		* @param string $category
232		* @param array $categoryMessages
233		*/
234	1	private function logCategoryMessages(string $category, array $categoryMessages): void
235		{
236	1	foreach ($categoryMessages as $token => $messages) {
237	1	if (!empty($messages)) {
238	1	$this->logger->log(
239	1	LogLevel::WARNING,
240	1	sprintf(
241	1	'Unclosed profiling entry detected: category "%s" token "%s" %s',
242		$category,
243		$token,
244	1	__METHOD__
245		)
246		);
247		}
248		}
249	1	}
250		}
251

yiisoft / profiler

Pull Request — master (#19)

Profiler::setEnabled() A

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