RedisCache::get() - Code Metrics - Inspection of "Add source code and tests, update support files (#..." - yiisoft/cache-redis - Measure and Improve Code Quality continuously with Scrutinizer

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Push — master ( 2db31a...7f27db )

by Alexander

created 2021-11-07 20:18 UTC

RedisCache::get() A

↳ Parent: RedisCache

Complexity

Conditions	2
Paths	2

Size

Total Lines	5
Code Lines	3

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	4
CRAP Score	2

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
eloc	3
c	1
b	0
f	0
dl	0
loc	5
ccs	4
cts	4
cp	1
rs	10
cc	2
nc	2
nop	2
crap	2

<?php

declare(strict_types=1);

namespace Yiisoft\Cache\Redis;

use DateInterval;
use DateTime;
use Predis\ClientInterface;
use Predis\Response\Status;
use Psr\SimpleCache\CacheInterface;
use Traversable;

use function array_fill_keys;
use function array_keys;
use function array_map;
use function count;
use function gettype;
use function is_iterable;
use function is_string;
use function iterator_to_array;
use function serialize;
use function strpbrk;
use function unserialize;

/**
 * RedisCache stores cache data in a Redis.
 *
 * Please refer to {@see CacheInterface} for common cache operations that are supported by RedisCache.
 */
final class RedisCache implements CacheInterface
{
    /**
     * @var ClientInterface $client Predis client instance to use.
     */
    private ClientInterface $client;

    /**
     * @param ClientInterface $client Predis client instance to use.
     */
    public function __construct(ClientInterface $client)
    {
        $this->client = $client;
    }

    public function get($key, $default = null)
    {
        $this->validateKey($key);
        $value = $this->client->get($key);
        return $value === null ? $default : unserialize($value);
    }

    public function set($key, $value, $ttl = null): bool
    {
        $ttl = $this->normalizeTtl($ttl);

        if ($this->isExpiredTtl($ttl)) {
            return $this->delete($key);
        }

        $this->validateKey($key);

        /** @var Status|null $result */
        $result = $this->isInfinityTtl($ttl)
            ? $this->client->set($key, serialize($value))
            : $this->client->set($key, serialize($value), 'EX', $ttl)
        ;

        return $result !== null;
    }

    public function delete($key): bool
    {
        return !$this->has($key) || $this->client->del($key) === 1;
    }

    public function clear(): bool
    {
        return $this->client->flushdb() !== null;
    }

    public function getMultiple($keys, $default = null): iterable
    {
        $keys = $this->iterableToArray($keys);
        $this->validateKeys($keys);
        /** @var string[] $keys */
        $values = array_fill_keys($keys, $default);
        /** @var null[]|string[] $valuesFromCache */
        $valuesFromCache = $this->client->mget($keys);

        $i = 0;
        /** @var mixed $default */
        foreach ($values as $key => $default) {
            /** @psalm-suppress MixedAssignment */
            $values[$key] = isset($valuesFromCache[$i]) ? unserialize($valuesFromCache[$i]) : $default;
            $i++;
        }

        return $values;
    }

    public function setMultiple($values, $ttl = null): bool
    {
        $values = $this->iterableToArray($values);
        $keys = array_map('\strval', array_keys($values));
        $this->validateKeys($keys);
        $ttl = $this->normalizeTtl($ttl);
        $serializeValues = [];

        if ($this->isExpiredTtl($ttl)) {
            return $this->deleteMultiple($keys);
        }

        /** @var mixed $value */
        foreach ($values as $key => $value) {
            $serializeValues[$key] = serialize($value);
        }

        if ($this->isInfinityTtl($ttl)) {
            $this->client->mset($serializeValues);
            return true;
        }

        $this->client->multi();
        $this->client->mset($serializeValues);

        foreach ($keys as $key) {
            $this->client->expire($key, $ttl);
        }

        $results = $this->client->exec();

        /** @var Status|null $result */
        foreach ((array) $results as $result) {
            if ($result === null) {
                return false;
            }
        }

        return true;
    }

    public function deleteMultiple($keys): bool
    {
        $keys = $this->iterableToArray($keys);

        /** @psalm-suppress MixedAssignment, MixedArgument */
        foreach ($keys as $index => $key) {
            if (!$this->has($key)) {
                unset($keys[$index]);
            }
        }

        return empty($keys) || $this->client->del($keys) === count($keys);
    }

    public function has($key): bool
    {
        $this->validateKey($key);
        $ttl = $this->client->ttl($key);
        /** "-1" - if the key exists but has no associated expire {@see https://redis.io/commands/ttl}. */
        return $ttl > 0 || $ttl === -1;
    }

    /**
     * Normalizes cache TTL handling `null` value, strings and {@see DateInterval} objects.
     *
     * @param DateInterval|int|string|null $ttl The raw TTL.
     *
     * @return int TTL value as UNIX timestamp.
     */
    private function normalizeTtl($ttl): ?int
    {
        if ($ttl === null) {
            return null;
        }

        if ($ttl instanceof DateInterval) {
            return (new DateTime('@0'))->add($ttl)->getTimestamp();
        }

        return (int) $ttl;
    }

    /**
     * Converts iterable to array. If provided value is not iterable it throws an InvalidArgumentException.
     *
     * @param mixed $iterable
     *
     * @return array
     */
    private function iterableToArray($iterable): array
    {
        if (!is_iterable($iterable)) {
            throw new InvalidArgumentException('Iterable is expected, got ' . gettype($iterable));
        }

        /** @psalm-suppress RedundantCast */
        return $iterable instanceof Traversable ? iterator_to_array($iterable) : (array) $iterable;
    }

    /**
     * @param mixed $key
     */
    private function validateKey($key): void
    {
        if (!is_string($key) || $key === '' || strpbrk($key, '{}()/\@:')) {
            throw new InvalidArgumentException('Invalid key value.');
        }
    }

    /**
     * @param array $keys
     */
    private function validateKeys(array $keys): void
    {
        if (empty($keys)) {
            throw new InvalidArgumentException('Invalid key values.');
        }

        /** @var mixed $key */
        foreach ($keys as $key) {
            $this->validateKey($key);
        }
    }

    private function isExpiredTtl(?int $ttl): bool
    {
        return $ttl !== null && $ttl <= 0;
    }

    private function isInfinityTtl(?int $ttl): bool
    {
        return $ttl === null;
    }
}


1		<?php
2
3		declare(strict_types=1);
4
5		namespace Yiisoft\Cache\Redis;
6
7		use DateInterval;
8		use DateTime;
9		use Predis\ClientInterface;
10		use Predis\Response\Status;
11		use Psr\SimpleCache\CacheInterface;
12		use Traversable;
13
14		use function array_fill_keys;
15		use function array_keys;
16		use function array_map;
17		use function count;
18		use function gettype;
19		use function is_iterable;
20		use function is_string;
21		use function iterator_to_array;
22		use function serialize;
23		use function strpbrk;
24		use function unserialize;
25
26		/**
27		* RedisCache stores cache data in a Redis.
28		*
29		* Please refer to {@see CacheInterface} for common cache operations that are supported by RedisCache.
30		*/
31		final class RedisCache implements CacheInterface
32		{
33		/**
34		* @var ClientInterface $client Predis client instance to use.
35		*/
36		private ClientInterface $client;
37
38		/**
39		* @param ClientInterface $client Predis client instance to use.
40		*/
41	178	public function __construct(ClientInterface $client)
42		{
43	178	$this->client = $client;
44	178	}
45
46	73	public function get($key, $default = null)
47		{
48	73	$this->validateKey($key);
49	65	$value = $this->client->get($key);
50	65	return $value === null ? $default : unserialize($value);
51		}
52
53	93	public function set($key, $value, $ttl = null): bool
54		{
55	93	$ttl = $this->normalizeTtl($ttl);
56
57	93	if ($this->isExpiredTtl($ttl)) {
58	1	return $this->delete($key);
59		}
60
61	92	$this->validateKey($key);
62
63		/** @var Status\|null $result */
64	84	$result = $this->isInfinityTtl($ttl)
65	72	? $this->client->set($key, serialize($value))
66	12	: $this->client->set($key, serialize($value), 'EX', $ttl)
67		;
68
69	84	return $result !== null;
70		}
71
72	22	public function delete($key): bool
73		{
74	22	return !$this->has($key) \|\| $this->client->del($key) === 1;
75		}
76
77	178	public function clear(): bool
78		{
79	178	return $this->client->flushdb() !== null;
80		}
81
82	24	public function getMultiple($keys, $default = null): iterable
83		{
84	24	$keys = $this->iterableToArray($keys);
85	16	$this->validateKeys($keys);
86		/** @var string[] $keys */
87	7	$values = array_fill_keys($keys, $default);
88		/** @var null[]\|string[] $valuesFromCache */
89	7	$valuesFromCache = $this->client->mget($keys);
90
91	7	$i = 0;
92		/** @var mixed $default */
93	7	foreach ($values as $key => $default) {
94		/** @psalm-suppress MixedAssignment */
95	7	$values[$key] = isset($valuesFromCache[$i]) ? unserialize($valuesFromCache[$i]) : $default;
96	7	$i++;
97		}
98
99	7	return $values;
100		}
101
102	21	public function setMultiple($values, $ttl = null): bool
103		{
104	21	$values = $this->iterableToArray($values);
105	13	$keys = array_map('\strval', array_keys($values));
106	13	$this->validateKeys($keys);
107	12	$ttl = $this->normalizeTtl($ttl);
108	12	$serializeValues = [];
109
110	12	if ($this->isExpiredTtl($ttl)) {
111	1	return $this->deleteMultiple($keys);
112		}
113
114		/** @var mixed $value */
115	11	foreach ($values as $key => $value) {
116	11	$serializeValues[$key] = serialize($value);
117		}
118
119	11	if ($this->isInfinityTtl($ttl)) {
120	8	$this->client->mset($serializeValues);
121	8	return true;
122		}
123
124	3	$this->client->multi();
125	3	$this->client->mset($serializeValues);
126
127	3	foreach ($keys as $key) {
128	3	$this->client->expire($key, $ttl);
129		}
130
131	3	$results = $this->client->exec();
132
133		/** @var Status\|null $result */
134	3	foreach ((array) $results as $result) {
135	3	if ($result === null) {
136	1	return false;
137		}
138		}
139
140	2	return true;
141		}
142
143	19	public function deleteMultiple($keys): bool
144		{
145	19	$keys = $this->iterableToArray($keys);
146
147		/** @psalm-suppress MixedAssignment, MixedArgument */
148	11	foreach ($keys as $index => $key) {
149	11	if (!$this->has($key)) {
150	2	unset($keys[$index]);
151		}
152		}
153
154	3	return empty($keys) \|\| $this->client->del($keys) === count($keys);
155		}
156
157	51	public function has($key): bool
158		{
159	51	$this->validateKey($key);
160	27	$ttl = $this->client->ttl($key);
161		/** "-1" - if the key exists but has no associated expire {@see https://redis.io/commands/ttl}. */
162	27	return $ttl > 0 \|\| $ttl === -1;
163		}
164
165		/**
166		* Normalizes cache TTL handling `null` value, strings and {@see DateInterval} objects.
167		*
168		* @param DateInterval\|int\|string\|null $ttl The raw TTL.
169		*
170		* @return int TTL value as UNIX timestamp.
171		*/
172	111	private function normalizeTtl($ttl): ?int
173		{
174	111	if ($ttl === null) {
175	89	return null;
176		}
177
178	22	if ($ttl instanceof DateInterval) {
179	2	return (new DateTime('@0'))->add($ttl)->getTimestamp();
180		}
181
182	20	return (int) $ttl;
183		}
184
185		/**
186		* Converts iterable to array. If provided value is not iterable it throws an InvalidArgumentException.
187		*
188		* @param mixed $iterable
189		*
190		* @return array
191		*/
192	55	private function iterableToArray($iterable): array
193		{
194	55	if (!is_iterable($iterable)) {
195	24	throw new InvalidArgumentException('Iterable is expected, got ' . gettype($iterable));
196		}
197
198		/** @psalm-suppress RedundantCast */
199	31	return $iterable instanceof Traversable ? iterator_to_array($iterable) : (array) $iterable;
200		}
201
202		/**
203		* @param mixed $key
204		*/
205	145	private function validateKey($key): void
206		{
207	145	if (!is_string($key) \|\| $key === '' \|\| strpbrk($key, '{}()/\@:')) {
208	48	throw new InvalidArgumentException('Invalid key value.');
209		}
210	97	}
211
212		/**
213		* @param array $keys
214		*/
215	23	private function validateKeys(array $keys): void
216		{
217	23	if (empty($keys)) {
218	2	throw new InvalidArgumentException('Invalid key values.');
219		}
220
221		/** @var mixed $key */
222	21	foreach ($keys as $key) {
223	21	$this->validateKey($key);
224		}
225	13	}
226
227	104	private function isExpiredTtl(?int $ttl): bool
228		{
229	104	return $ttl !== null && $ttl <= 0;
230		}
231
232	95	private function isInfinityTtl(?int $ttl): bool
233		{
234	95	return $ttl === null;
235		}
236		}
237

yiisoft / cache-redis

Push — master ( 2db31a...7f27db )

RedisCache::get() A

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