Predis::getStats() - Code Metrics - Inspection of "Merge pull request #3801 from Spuds/Cache" - elkarte/Elkarte - Measure and Improve Code Quality continuously with Scrutinizer

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Push — development ( 8f3e46...8433eb )

by Spuds

created 2024-06-04 13:13 UTC

Predis::getStats() A

↳ Parent: Predis

Complexity

Conditions	2
Paths	2

Size

Total Lines	23
Code Lines	14

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	1

Metric	Value
eloc	14
dl	0
loc	23
rs	9.7998
c	1
b	0
f	1
cc	2
nc	2
nop	0

<?php

/**
 * This file contains functions that deal with getting and setting RedisD cache values.
 *
 * @package   ElkArte Forum
 * @copyright ElkArte Forum contributors
 * @license   BSD http://opensource.org/licenses/BSD-3-Clause (see accompanying LICENSE.txt file)
 *
 * @version 2.0 dev
 *
 */

namespace ElkArte\Cache\CacheMethod;

/**
 * Predis
 */
class Predis extends AbstractCacheMethod
{
	/** {@inheritdoc} */
	protected $title = 'Predis';

	/** @var \Predis Predis instance representing the connection to the Redis servers. */
filter:
    dependency_paths: ["lib/*"]
	protected $obj;

	/** @var server */
filter:
    dependency_paths: ["lib/*"]
	protected $server = [];

	/**
	 * {@inheritdoc}
	 */
	public function __construct($options)
	{
	//	require_once(EXTDIR . '/predis/autoload.php');

		if ($this->isAvailable())
		{
			parent::__construct($options);
			$this->addServers();
		}
	}

	/**
	 * {@inheritdoc}
	 */
	public function isAvailable()
	{
		return class_exists('\Predis\Client');
	}

	/**
	 * Add Redis servers.
	 *
	 * Don't add servers if they already exist. Ideal for persistent connections.
	 *
	 * @return bool True if there are servers in the daemon, false if not.
	 */
	protected function addServers()
	{
		if (!empty($this->_options['servers']))
		{
			$server = reset($this->_options['servers']);
			$server = explode(':', trim($server));
			$server[0] = !empty($server[0]) ? $server[0] : 'localhost';
			$server[1] = !empty($server[1]) ? $server[1] : 6379;

			$params = [
				'scheme' => 'tcp',
				'host' => $server[0],
				'port' => $server[1],
			];

			try
			{
				$this->obj = new \Predis\Client($params);
filter:
    dependency_paths: ["lib/*"]
				$this->obj->connect();
				$this->server[] = "tcp://{$server[0]}:{$server[1]}";
			}
			catch (\Predis\Connection\ConnectionException $e)
filter:
    dependency_paths: ["lib/*"]
			{
				// Clear the object, should we log an error here?
				$this->obj = null;
			}
		}
	}

	/**
	 * Get redis servers.
	 *
	 * @return array A list of servers in the daemon.
	 */
	protected function getServers()
	{
		return $this->server;

	}

	/**
	 * Retrieves statistics about the cache.
	 *
	 * @return array An associative array containing the cache statistics.
	 *    The array has the following keys:
	 *      - curr_items: The number of items currently stored in the cache.
	 *      - get_hits: The number of successful cache hits.
	 *      - get_misses: The number of cache misses.
	 *      - curr_connections: The number of current open connections to the cache server.
	 *      - version: The version of the cache server.
	 *      - hit_rate: The cache hit rate as a decimal value with two decimal places.
	 *      - miss_rate: The cache miss rate as a decimal value with two decimal places.
	 *
	 * If the statistics cannot be obtained, an empty array is returned.
	 */
	public function getStats()
	{
		$results = [];

		$cache = $this->obj->info();

		if ($cache === false)
		{
			return $results;
		}

		$elapsed = max($cache['Server']['uptime_in_seconds'], 1) / 60;
		$cache['Stats']['tracking_total_keys'] = count($this->obj->keys('*'));

		$results['curr_items'] = comma_format($cache['Stats']['tracking_total_keys'] ?? 0, 0);
		$results['get_hits'] = comma_format($cache['Stats']['keyspace_hits'] ?? 0, 0);
		$results['get_misses'] = comma_format($cache['Stats']['keyspace_misses'] ?? 0, 0);
		$results['curr_connections'] = $cache['Server']['connected_clients'] ?? 0;
		$results['version'] = $cache['Server']['redis_version'] ?? '0.0.0';
		$results['hit_rate'] = sprintf("%.2f", $cache['keyspace_hits'] / $elapsed);
		$results['miss_rate'] = sprintf("%.2f", $cache['keyspace_misses'] / $elapsed);

		return $results;
	}

	/**
	 * {@inheritdoc}
	 */
	public function exists($key)
	{
		$this->get($key);

		return !$this->is_miss;
	}

	/**
	 * {@inheritdoc}
	 */
	public function get($key, $ttl = 120)
	{
		if (!is_object($this->obj))
		{
			return '';
interface HasName {
    /** @return string */
    public function getName();
}

class Name {
    public $name;
}

class User implements HasName {
    /** @return string|Name */
    public function getName() {
        return new Name('foo'); // This is a violation of the ``HasName`` interface
                                // which only allows a string value to be returned.
    }
}
		}

		$result = $this->obj->get($key);
		$this->is_miss = $result == null;

		return $result;
	}

	/**
	 * {@inheritdoc}
	 */
	public function put($key, $value, $ttl = 120)
	{
		if (!is_object($this->obj))
		{
			return '';
		}

		if ($value === null)
		{
			$this->obj->del($key);
		}

		$this->obj->set($key, $value);
	}

	/**
	 * {@inheritdoc}
	 */
	public function clean($type = '')
	{
		if (!is_object($this->obj))
		{
			return '';
		}

		// Clear it out, really invalidate whats there
		$this->obj->flush();
	}

	/**
	 * {@inheritdoc}
	 */
	public function details()
	{
		if (!is_object($this->obj))
		{
			return '';
interface HasName {
    /** @return string */
    public function getName();
}

class Name {
    public $name;
}

class User implements HasName {
    /** @return string|Name */
    public function getName() {
        return new Name('foo'); // This is a violation of the ``HasName`` interface
                                // which only allows a string value to be returned.
    }
}
		}

		$version = $this->obj->info()['Server'];

		return array(
			'title' => $this->title(),
			'version' => !empty($version['redis_version']) ? $version['redis_version'] : '0.0.0'
		);
	}

	/**
	 * Adds the settings to the settings page.
	 *
	 * Used by integrate_modify_cache_settings added in the title method
	 *
	 * @param array $config_vars
	 */
	public function settings(&$config_vars)
	{
		global $txt;

		$var = [
			'cache_servers_redis', $txt['cache_redis'], 'file', 'text', 30, 'cache_redis', 'force_div_id' => 'redis_cache_redis',
		];

		$serversmList = $this->getServers();
		$serversmList = empty($serversmList) ? [$txt['admin_search_results_none']] : $serversmList;
		$var['postinput'] = $txt['cache_redis_servers'] . implode('</li><li>', $serversmList) . '</li></ul>';

		$config_vars[] = $var;
	}
}


1			<?php
2
3			/**
4			* This file contains functions that deal with getting and setting RedisD cache values.
5			*
6			* @package ElkArte Forum
7			* @copyright ElkArte Forum contributors
8			* @license BSD http://opensource.org/licenses/BSD-3-Clause (see accompanying LICENSE.txt file)
9			*
10			* @version 2.0 dev
11			*
12			*/
13
14			namespace ElkArte\Cache\CacheMethod;
15
16			/**
17			* Predis
18			*/
19			class Predis extends AbstractCacheMethod
20			{
21			/** {@inheritdoc} */
22			protected $title = 'Predis';
23
24			/** @var \Predis Predis instance representing the connection to the Redis servers. */
			0 ignored issues – show Bug introduced 2024-06-01 16:35 UTC by Report Bug Copy Issue Report The type `Predis` was not found. Maybe you did not declare it correctly or list all dependencies? The issue could also be caused by a filter entry in the build configuration. If the path has been excluded in your configuration, e.g. `excluded_paths: ["lib/"]`, you can move it to the dependency path list as follows: filter: dependency_paths: ["lib/"] For further information see https://scrutinizer-ci.com/docs/tools/php/php-scrutinizer/#list-dependency-paths Loading history...
25			protected $obj;
26
27			/** @var server */
			0 ignored issues – show Bug introduced 2023-05-12 19:34 UTC by Report Bug Copy Issue Report The type `ElkArte\Cache\CacheMethod\server` was not found. Maybe you did not declare it correctly or list all dependencies? The issue could also be caused by a filter entry in the build configuration. If the path has been excluded in your configuration, e.g. `excluded_paths: ["lib/"]`, you can move it to the dependency path list as follows: filter: dependency_paths: ["lib/"] For further information see https://scrutinizer-ci.com/docs/tools/php/php-scrutinizer/#list-dependency-paths Loading history...
28			protected $server = [];
29
30			/**
31			* {@inheritdoc}
32			*/
33			public function __construct($options)
34			{
35			// require_once(EXTDIR . '/predis/autoload.php');
36
37			if ($this->isAvailable())
38			{
39			parent::__construct($options);
40			$this->addServers();
41			}
42			}
43
44			/**
45			* {@inheritdoc}
46			*/
47			public function isAvailable()
48			{
49			return class_exists('\Predis\Client');
50			}
51
52			/**
53			* Add Redis servers.
54			*
55			* Don't add servers if they already exist. Ideal for persistent connections.
56			*
57			* @return bool True if there are servers in the daemon, false if not.
58			*/
59			protected function addServers()
60			{
61			if (!empty($this->_options['servers']))
62			{
63			$server = reset($this->_options['servers']);
64			$server = explode(':', trim($server));
65			$server[0] = !empty($server[0]) ? $server[0] : 'localhost';
66			$server[1] = !empty($server[1]) ? $server[1] : 6379;
67
68			$params = [
69			'scheme' => 'tcp',
70			'host' => $server[0],
71			'port' => $server[1],
72			];
73
74			try
75			{
76			$this->obj = new \Predis\Client($params);
			0 ignored issues – show Bug introduced 2024-06-01 16:35 UTC by Report Bug Copy Issue Report The type `Predis\Client` was not found. Maybe you did not declare it correctly or list all dependencies? The issue could also be caused by a filter entry in the build configuration. If the path has been excluded in your configuration, e.g. `excluded_paths: ["lib/"]`, you can move it to the dependency path list as follows: filter: dependency_paths: ["lib/"] For further information see https://scrutinizer-ci.com/docs/tools/php/php-scrutinizer/#list-dependency-paths Loading history...
77			$this->obj->connect();
78			$this->server[] = "tcp://{$server[0]}:{$server[1]}";
79			}
80			catch (\Predis\Connection\ConnectionException $e)
			0 ignored issues – show Bug introduced 2024-06-01 16:35 UTC by Report Bug Copy Issue Report The type `Predis\Connection\ConnectionException` was not found. Maybe you did not declare it correctly or list all dependencies? The issue could also be caused by a filter entry in the build configuration. If the path has been excluded in your configuration, e.g. `excluded_paths: ["lib/"]`, you can move it to the dependency path list as follows: filter: dependency_paths: ["lib/"] For further information see https://scrutinizer-ci.com/docs/tools/php/php-scrutinizer/#list-dependency-paths Loading history...
81			{
82			// Clear the object, should we log an error here?
83			$this->obj = null;
84			}
85			}
86			}
87
88			/**
89			* Get redis servers.
90			*
91			* @return array A list of servers in the daemon.
92			*/
93			protected function getServers()
94			{
95			return $this->server;
			0 ignored issues – show Bug Best Practice introduced 2023-05-12 19:34 UTC by Report Bug Copy Issue Report The expression `return $this->server` returns the type `ElkArte\Cache\CacheMethod\server` which is incompatible with the documented return type `array`. Loading history...
96			}
97
98			/**
99			* Retrieves statistics about the cache.
100			*
101			* @return array An associative array containing the cache statistics.
102			* The array has the following keys:
103			* - curr_items: The number of items currently stored in the cache.
104			* - get_hits: The number of successful cache hits.
105			* - get_misses: The number of cache misses.
106			* - curr_connections: The number of current open connections to the cache server.
107			* - version: The version of the cache server.
108			* - hit_rate: The cache hit rate as a decimal value with two decimal places.
109			* - miss_rate: The cache miss rate as a decimal value with two decimal places.
110			*
111			* If the statistics cannot be obtained, an empty array is returned.
112			*/
113			public function getStats()
114			{
115			$results = [];
116
117			$cache = $this->obj->info();
118
119			if ($cache === false)
120			{
121			return $results;
122			}
123
124			$elapsed = max($cache['Server']['uptime_in_seconds'], 1) / 60;
125			$cache['Stats']['tracking_total_keys'] = count($this->obj->keys('*'));
126
127			$results['curr_items'] = comma_format($cache['Stats']['tracking_total_keys'] ?? 0, 0);
128			$results['get_hits'] = comma_format($cache['Stats']['keyspace_hits'] ?? 0, 0);
129			$results['get_misses'] = comma_format($cache['Stats']['keyspace_misses'] ?? 0, 0);
130			$results['curr_connections'] = $cache['Server']['connected_clients'] ?? 0;
131			$results['version'] = $cache['Server']['redis_version'] ?? '0.0.0';
132			$results['hit_rate'] = sprintf("%.2f", $cache['keyspace_hits'] / $elapsed);
133			$results['miss_rate'] = sprintf("%.2f", $cache['keyspace_misses'] / $elapsed);
134
135			return $results;
136			}
137
138			/**
139			* {@inheritdoc}
140			*/
141			public function exists($key)
142			{
143			$this->get($key);
144
145			return !$this->is_miss;
146			}
147
148			/**
149			* {@inheritdoc}
150			*/
151			public function get($key, $ttl = 120)
152			{
153			if (!is_object($this->obj))
154			{
155			return '';
			0 ignored issues – show Bug Best Practice introduced 2023-05-12 19:34 UTC by Report Bug Copy Issue Report The expression `return ''` returns the type `string` which is incompatible with the return type mandated by `ElkArte\Cache\CacheMetho...eMethodInterface::get()` of `array\|null`. In the issue above, the returned value is violating the contract defined by the mentioned interface. Let's take a look at an example: interface HasName { /** @return string / public function getName(); } class Name { public $name; } class User implements HasName { /* @return string\|Name */ public function getName() { return new Name('foo'); // This is a violation of the ``HasName`` interface // which only allows a string value to be returned. } } Loading history...
156			}
157
158			$result = $this->obj->get($key);
159			$this->is_miss = $result == null;
160
161			return $result;
162			}
163
164			/**
165			* {@inheritdoc}
166			*/
167			public function put($key, $value, $ttl = 120)
168			{
169			if (!is_object($this->obj))
170			{
171			return '';
172			}
173
174			if ($value === null)
175			{
176			$this->obj->del($key);
177			}
178
179			$this->obj->set($key, $value);
180			}
181
182			/**
183			* {@inheritdoc}
184			*/
185			public function clean($type = '')
186			{
187			if (!is_object($this->obj))
188			{
189			return '';
190			}
191
192			// Clear it out, really invalidate whats there
193			$this->obj->flush();
194			}
195
196			/**
197			* {@inheritdoc}
198			*/
199			public function details()
200			{
201			if (!is_object($this->obj))
202			{
203			return '';
			0 ignored issues – show Bug Best Practice introduced 2023-05-12 19:34 UTC by Report Bug Copy Issue Report The expression `return ''` returns the type `string` which is incompatible with the return type mandated by `ElkArte\Cache\CacheMetho...hodInterface::details()` of `string[]`. In the issue above, the returned value is violating the contract defined by the mentioned interface. Let's take a look at an example: interface HasName { /** @return string / public function getName(); } class Name { public $name; } class User implements HasName { /* @return string\|Name */ public function getName() { return new Name('foo'); // This is a violation of the ``HasName`` interface // which only allows a string value to be returned. } } Loading history...
204			}
205
206			$version = $this->obj->info()['Server'];
207
208			return array(
209			'title' => $this->title(),
210			'version' => !empty($version['redis_version']) ? $version['redis_version'] : '0.0.0'
211			);
212			}
213
214			/**
215			* Adds the settings to the settings page.
216			*
217			* Used by integrate_modify_cache_settings added in the title method
218			*
219			* @param array $config_vars
220			*/
221			public function settings(&$config_vars)
222			{
223			global $txt;
224
225			$var = [
226			'cache_servers_redis', $txt['cache_redis'], 'file', 'text', 30, 'cache_redis', 'force_div_id' => 'redis_cache_redis',
227			];
228
229			$serversmList = $this->getServers();
230			$serversmList = empty($serversmList) ? [$txt['admin_search_results_none']] : $serversmList;
231			$var['postinput'] = $txt['cache_redis_servers'] . implode('</li><li>', $serversmList) . '</li></ul>';
232
233			$config_vars[] = $var;
234			}
235			}
236

elkarte / Elkarte

Push — development ( 8f3e46...8433eb )

Predis::getStats() A

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