Memcache::delete() - Code Metrics - Inspection of "Add memcache Adapter" - frqnck/apix-cache - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#7)

by Thomas

created 2016-01-06 19:33 UTC

Memcache::delete() B

↳ Parent: Memcache

Complexity

Conditions	6
Paths	9

Size

Total Lines	30
Code Lines	14

Duplication

Lines	16
Ratio	53.33 %

Importance

Changes	1
Bugs	0	Features	1

Metric	Value
c	1
b	0
f	1
dl	16
loc	30
rs	8.439
cc	6
eloc	14
nc	9
nop	1

<?php
/**
 *
 * This file is part of the Apix Project.
 *
 * (c) Franck Cassedanne <franck at ouarz.net>
 *
 * @license     http://opensource.org/licenses/BSD-3-Clause  New BSD License
 *
 */

namespace Apix\Cache;

/**
 * Memcache cache wrapper.
 *
 * @author Franck Cassedanne <franck at ouarz.net>
 *
 */
class Memcache extends AbstractCache
{
    /**
     * Holds an injected adapter.
     * @var \Memcache
     */
    protected $adapter = null;

    /**
     * Holds the array of TTLs.
     * @var array
     */
    protected $ttls = array();

    /**
     * Constructor.
     *
     * @param \Memcache $memcache A Memcache instance.
     * @param array     $options  Array of options.
     */
    public function __construct(\Memcache $memcache, array $options = null)
    {
        // default options
        $this->options['prefix_key'] = 'key_';  // prefix cache keys
        $this->options['prefix_tag'] = 'tag_';  // prefix cache tags
        $this->options['prefix_idx'] = 'idx_';  // prefix cache indexes
        $this->options['prefix_nsp'] = 'nsp_';  // prefix cache namespaces

        $this->options['serializer'] = 'php';   // none, php, json, igBinary.

        parent::__construct($memcache, $options);

        if ($this->options['tag_enable']) {
            $this->setSerializer($this->options['serializer']);
        }
    }

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

    /**
     * {@inheritdoc}
     */
    public function loadTag($tag)
    {
        return $this->getIndex($this->mapTag($tag))->load();
    }

    /**
     * {@inheritdoc}
     */
    public function save($data, $key, array $tags = null, $ttl = null)

    {
        $ttl = $this->sanitiseTtl($ttl);

        $mKey = $this->mapKey($key);

        $data = array('data' => $data, 'ttl' => $ttl);
        $this->ttls[$mKey] = $ttl;

        // add the item
        $success = $this->adapter->set($mKey, $data, $ttl);

        if ($success && $this->options['tag_enable'] && !empty($tags)) {

            // add all the tags to the index key.
            $this->getIndex($this->mapIdx($key))->add($tags);

            // append the key to each tag.
            foreach ($tags as $tag) {
                $this->getIndex($this->mapTag($tag))->add($mKey);
            }
        }

        return $success;
    }

    /**
     * {@inheritdoc}
     */
    public function clean(array $tags)
    {
        $items = array();

        foreach ($tags as $tag) {

            $keys = $this->loadTag($tag);
            if (null !== $keys) {
                foreach ($keys as $key) {
                    $items[] = $key;
                }
            }

            // add the tag to deletion
            $items[] = $this->mapTag($tag);
        }

        $success = true;

        foreach ($items as $item) {
            $success = $this->adapter->delete($item) && $success;
        }

        return $success;
    }

    /**
     * {@inheritdoc}
     */
    public function delete($key)
    {
        $_key = $this->mapKey($key);
        $items = array($_key);

        if ($this->options['tag_enable']) {

            $idx_key = $this->mapIdx($key);

            // load the tags from the index key
            $tags = $this->getIndex($idx_key)->load();

            if (is_array($tags)) {
                // mark the key as deleted in the tags.
                foreach ($tags as $tag) {
                    $this->getIndex($this->mapTag($tag))->remove($_key);
                }

                // delete that index key
                $items[] = $idx_key;
            }
        }

        $success = true;

        foreach ($items as $item) {
            $success = $this->adapter->delete($item) && $success;
        }

        return $success;
    }

    /**
     * {@inheritdoc}
     */
    public function flush($all = false)
    {
        return $this->adapter->flush();
    }

    /**
     * Retrieves the cache item for the given id.
     *
     * @param  string     $id        The cache id to retrieve.
     * @return mixed|null Returns the cached data or null.
     */
    public function get($id)
    {
        $data = $this->adapter->get($id);

        if (false !== $data) {
            $this->ttls[$id] = isset($data['ttl']) ? $data['ttl'] : 0;

            return isset($data['data']) ? $data['data'] : $data;
        }

        return null;
    }

    /**
     * Returns the ttl sanitased for this cache adapter.
     *
     * The number of seconds may not exceed 60*60*24*30 = 2,592,000 (30 days).
     * @see http://php.net/manual/en/Memcache.expiration.php
     *
     * @param  integer|null $ttl The time-to-live in seconds.
     * @return int
     */
    public function sanitiseTtl($ttl)
    {
        return $ttl > 2592000 ? time() + $ttl : $ttl;
    }

    /**
     * Returns the named indexer.
     *
     * @param  string          $name The name of the index.
     * @return Indexer\Adapter
     */
    public function getIndex($name)
    {
        return new Indexer\MemcacheIndexer($name, $this);
    }

    /**
     * Returns a prefixed and sanitased cache id.
     *
     * @param  string $key The base key to prefix.
     * @return string
     */
    public function mapIdx($key)
    {
        return $this->sanitise($this->options['prefix_idx'] . $key);
    }

    /**
     * Increments the value of the given key.
     *
     * @param  string  $key The key to increment.
     *
     * @return int|bool Returns the new item's value on success or FALSE on failure.
     */
    public function increment($key)

    {
        $counter = $this->adapter->get($key);

        if (false === $counter) {
            $counter = 1;
            $this->adapter->set($key, $counter);
        } else {
            $counter = $this->adapter->increment($key);
        }

        return $counter;
    }

    /**
     * {@inheritdoc}
     *
     * The number of seconds may not exceed 60*60*24*30 = 2,592,000 (30 days).
     */
    public function getTtl($key)
    {
        $mKey = $this->mapKey($key);

        if (!isset($this->ttls[$mKey])) {
            $data = $this->adapter->get($mKey);

            $this->ttls[$mKey] = (isset($data['ttl']) ? $data['ttl'] : 0);
        }

        return $this->ttls[$mKey];
    }

    /**
     * Gets the injected adapter.
     *
     * @return \Memcache
     */
    public function getAdapter()
    {
        return $this->adapter;
    }
}


1		<?php
2		/**
3		*
4		* This file is part of the Apix Project.
5		*
6		* (c) Franck Cassedanne <franck at ouarz.net>
7		*
8		* @license http://opensource.org/licenses/BSD-3-Clause New BSD License
9		*
10		*/
11
12		namespace Apix\Cache;
13
14		/**
15		* Memcache cache wrapper.
16		*
17		* @author Franck Cassedanne <franck at ouarz.net>
18		*
19		*/
20		class Memcache extends AbstractCache
21		{
22		/**
23		* Holds an injected adapter.
24		* @var \Memcache
25		*/
26		protected $adapter = null;
27
28		/**
29		* Holds the array of TTLs.
30		* @var array
31		*/
32		protected $ttls = array();
33
34		/**
35		* Constructor.
36		*
37		* @param \Memcache $memcache A Memcache instance.
38		* @param array $options Array of options.
39		*/
40		public function __construct(\Memcache $memcache, array $options = null)
41		{
42		// default options
43		$this->options['prefix_key'] = 'key_'; // prefix cache keys
44		$this->options['prefix_tag'] = 'tag_'; // prefix cache tags
45		$this->options['prefix_idx'] = 'idx_'; // prefix cache indexes
46		$this->options['prefix_nsp'] = 'nsp_'; // prefix cache namespaces
47
48		$this->options['serializer'] = 'php'; // none, php, json, igBinary.
49
50		parent::__construct($memcache, $options);
51
52		if ($this->options['tag_enable']) {
53		$this->setSerializer($this->options['serializer']);
54		}
55		}
56
57		/**
58		* {@inheritdoc}
59		*/
60		public function loadKey($key)
61		{
62		return $this->get($this->mapKey($key));
63		}
64
65		/**
66		* {@inheritdoc}
67		*/
68		public function loadTag($tag)
69		{
70		return $this->getIndex($this->mapTag($tag))->load();
71		}
72
73		/**
74		* {@inheritdoc}
75		*/
76	View Code Duplication	public function save($data, $key, array $tags = null, $ttl = null)
		0 ignored issues – show Duplication introduced 2016-01-05 21:20 UTC by Report Bug Copy Issue Report This method seems to be duplicated in your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
77		{
78		$ttl = $this->sanitiseTtl($ttl);
79
80		$mKey = $this->mapKey($key);
81
82		$data = array('data' => $data, 'ttl' => $ttl);
83		$this->ttls[$mKey] = $ttl;
84
85		// add the item
86		$success = $this->adapter->set($mKey, $data, $ttl);
87
88		if ($success && $this->options['tag_enable'] && !empty($tags)) {
89
90		// add all the tags to the index key.
91		$this->getIndex($this->mapIdx($key))->add($tags);
92
93		// append the key to each tag.
94		foreach ($tags as $tag) {
95		$this->getIndex($this->mapTag($tag))->add($mKey);
96		}
97		}
98
99		return $success;
100		}
101
102		/**
103		* {@inheritdoc}
104		*/
105		public function clean(array $tags)
106		{
107		$items = array();
108
109	View Code Duplication	foreach ($tags as $tag) {
		0 ignored issues – show Duplication introduced 2016-01-05 21:20 UTC by Report Bug Copy Issue Report This code seems to be duplicated across your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
110		$keys = $this->loadTag($tag);
111		if (null !== $keys) {
112		foreach ($keys as $key) {
113		$items[] = $key;
114		}
115		}
116
117		// add the tag to deletion
118		$items[] = $this->mapTag($tag);
119		}
120
121		$success = true;
122
123		foreach ($items as $item) {
124		$success = $this->adapter->delete($item) && $success;
125		}
126
127		return $success;
128		}
129
130		/**
131		* {@inheritdoc}
132		*/
133		public function delete($key)
134		{
135		$_key = $this->mapKey($key);
136		$items = array($_key);
137
138	View Code Duplication	if ($this->options['tag_enable']) {
		0 ignored issues – show Duplication introduced 2016-01-05 21:20 UTC by Report Bug Copy Issue Report This code seems to be duplicated across your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
139		$idx_key = $this->mapIdx($key);
140
141		// load the tags from the index key
142		$tags = $this->getIndex($idx_key)->load();
143
144		if (is_array($tags)) {
145		// mark the key as deleted in the tags.
146		foreach ($tags as $tag) {
147		$this->getIndex($this->mapTag($tag))->remove($_key);
148		}
149
150		// delete that index key
151		$items[] = $idx_key;
152		}
153		}
154
155		$success = true;
156
157		foreach ($items as $item) {
158		$success = $this->adapter->delete($item) && $success;
159		}
160
161		return $success;
162		}
163
164		/**
165		* {@inheritdoc}
166		*/
167		public function flush($all = false)
168		{
169		return $this->adapter->flush();
170		}
171
172		/**
173		* Retrieves the cache item for the given id.
174		*
175		* @param string $id The cache id to retrieve.
176		* @return mixed\|null Returns the cached data or null.
177		*/
178		public function get($id)
179		{
180		$data = $this->adapter->get($id);
181
182		if (false !== $data) {
183		$this->ttls[$id] = isset($data['ttl']) ? $data['ttl'] : 0;
184
185		return isset($data['data']) ? $data['data'] : $data;
186		}
187
188		return null;
189		}
190
191		/**
192		* Returns the ttl sanitased for this cache adapter.
193		*
194		* The number of seconds may not exceed 606024*30 = 2,592,000 (30 days).
195		* @see http://php.net/manual/en/Memcache.expiration.php
196		*
197		* @param integer\|null $ttl The time-to-live in seconds.
198		* @return int
199		*/
200		public function sanitiseTtl($ttl)
201		{
202		return $ttl > 2592000 ? time() + $ttl : $ttl;
203		}
204
205		/**
206		* Returns the named indexer.
207		*
208		* @param string $name The name of the index.
209		* @return Indexer\Adapter
210		*/
211		public function getIndex($name)
212		{
213		return new Indexer\MemcacheIndexer($name, $this);
214		}
215
216		/**
217		* Returns a prefixed and sanitased cache id.
218		*
219		* @param string $key The base key to prefix.
220		* @return string
221		*/
222		public function mapIdx($key)
223		{
224		return $this->sanitise($this->options['prefix_idx'] . $key);
225		}
226
227		/**
228		* Increments the value of the given key.
229		*
230		* @param string $key The key to increment.
231		*
232		* @return int\|bool Returns the new item's value on success or FALSE on failure.
233		*/
234	View Code Duplication	public function increment($key)
		0 ignored issues – show Duplication introduced 2016-01-05 21:20 UTC by Report Bug Copy Issue Report This method seems to be duplicated in your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
235		{
236		$counter = $this->adapter->get($key);
237
238		if (false === $counter) {
239		$counter = 1;
240		$this->adapter->set($key, $counter);
241		} else {
242		$counter = $this->adapter->increment($key);
243		}
244
245		return $counter;
246		}
247
248		/**
249		* {@inheritdoc}
250		*
251		* The number of seconds may not exceed 606024*30 = 2,592,000 (30 days).
252		*/
253		public function getTtl($key)
254		{
255		$mKey = $this->mapKey($key);
256
257		if (!isset($this->ttls[$mKey])) {
258		$data = $this->adapter->get($mKey);
259
260		$this->ttls[$mKey] = (isset($data['ttl']) ? $data['ttl'] : 0);
261		}
262
263		return $this->ttls[$mKey];
264		}
265
266		/**
267		* Gets the injected adapter.
268		*
269		* @return \Memcache
270		*/
271		public function getAdapter()
272		{
273		return $this->adapter;
274		}
275		}
276

frqnck / apix-cache

Pull Request — master (#7)

Memcache::delete() B

Complexity

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Duplication

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