RedisProxy::decrbyfloat() - Code Metrics - Inspection of "Added commands" - lulco/redis-proxy - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#5)

by Michal

created 2017-03-06 06:33 UTC

RedisProxy::decrbyfloat() A

↳ Parent: RedisProxy

Complexity

Conditions	1
Paths	1

Size

Total Lines	4
Code Lines	2

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	2
CRAP Score	1

Importance

Changes

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

<?php

namespace RedisProxy;

use Exception;
use Predis\Client;
use Predis\Response\Status;
use Redis;

/**
 * @method mixed config(string $command, $argument = null)
 * @method int dbsize() Return the number of keys in the selected database
 * @method boolean set(string $key, string $value) Set the string value of a key
 * @method array keys(string $pattern) Find all keys matching the given pattern
 * @method int hset(string $key, string $field, string $value) Set the string value of a hash field
 * @method array hkeys(string $key) Get all fields in a hash (without values)
 * @method array hgetall(string $key) Get all fields and values in a hash
 * @method int hlen(string $key) Get the number of fields in a hash
 * @method array smembers(string $key) Get all the members in a set
 * @method int scard(string $key) Get the number of members in a set
 * @method int llen(string $key) Get the length of a list
 * @method array lrange(string $key, int $start, int $stop) Get a range of elements from a list
 * @method boolean flushall() Remove all keys from all databases
 * @method boolean flushdb() Remove all keys from the current database
 */
class RedisProxy
{
    const DRIVER_REDIS = 'redis';

    const DRIVER_PREDIS = 'predis';

    const TYPE_STRING = 'string';

    const TYPE_SET = 'set';

    const TYPE_HASH = 'hash';

    const TYPE_LIST = 'list';

    const TYPE_SORTED_SET = 'sorted_set';

    private $driver;

    private $host;

    private $port;

    private $database = 0;

    private $selectedDatabase = 0;

    private $timeout;

    private $supportedDrivers = [
        self::DRIVER_REDIS,
        self::DRIVER_PREDIS,
    ];

    private $driversOrder = [];

    private $redisTypeMap = [
        Redis::REDIS_STRING => self::TYPE_STRING,
        Redis::REDIS_SET => self::TYPE_SET,
        Redis::REDIS_HASH => self::TYPE_HASH,
        Redis::REDIS_LIST => self::TYPE_LIST,
        Redis::REDIS_ZSET => self::TYPE_SORTED_SET,
    ];

    private $predisTypeMap = [
        'string' => self::TYPE_STRING,
        'set' => self::TYPE_SET,
        'hash' => self::TYPE_HASH,
        'list' => self::TYPE_LIST,
        'zset' => self::TYPE_SORTED_SET,
    ];

    public function __construct($host, $port, $database = 0, $timeout = null)
    {
        $this->host = $host;
        $this->port = $port;
        $this->database = $database;
        $this->timeout = $timeout;
        $this->driversOrder = $this->supportedDrivers;
    }

    /**
     * Set driver priorities - default is 1. redis, 2. predis
     * @param array $driversOrder
     * @return RedisProxy
     * @throws RedisProxyException if some driver is not supported
     */
    public function setDriversOrder(array $driversOrder)
    {
        foreach ($driversOrder as $driver) {
            if (!in_array($driver, $this->supportedDrivers)) {
                throw new RedisProxyException('Driver "' . $driver . '" is not supported');
            }
        }
        $this->driversOrder = $driversOrder;
        return $this;
    }

    private function init()
    {
        $this->prepareDriver();
        $this->select($this->database);
    }

    private function prepareDriver()
    {
        if ($this->driver !== null) {
            return;
        }

        foreach ($this->driversOrder as $preferredDriver) {
            if ($preferredDriver === self::DRIVER_REDIS && extension_loaded('redis')) {
                $this->driver = new Redis();
                return;
            }
            if ($preferredDriver === self::DRIVER_PREDIS && class_exists('Predis\Client')) {
                $this->driver = new Client();
                return;
            }
        }
        throw new RedisProxyException('No driver available');
    }

    /**
     * @return string|null
     */
    public function actualDriver()
    {
        if ($this->driver instanceof Redis) {
            return self::DRIVER_REDIS;
        }
        if ($this->driver instanceof Client) {
            return self::DRIVER_PREDIS;
        }
        return null;
    }

    private function connect($host, $port, $timeout = null)
    {
        return $this->driver->connect($host, $port, $timeout);
    }

    private function isConnected()
    {
        return $this->driver->isConnected();
    }

    public function __call($name, $arguments)
    {
        $this->init();
        $name = strtolower($name);
        try {
            $result = call_user_func_array([$this->driver, $name], $arguments);
        } catch (Exception $e) {
            throw new RedisProxyException("Error for command '$name', use getPrevious() for more info", 1484162284, $e);
        }
        return $this->transformResult($result);
    }

    /**
     * @param int $database
     * @return boolean true on success
     * @throws RedisProxyException on failure
     */
    public function select($database)
    {
        $this->prepareDriver();
        if (!$this->isConnected()) {
            $this->connect($this->host, $this->port, $this->timeout);
        }
        if ($database == $this->selectedDatabase) {
            return true;
        }
        try {
            $result = $this->driver->select($database);
        } catch (Exception $e) {
            throw new RedisProxyException('Invalid DB index');
        }
        $result = $this->transformResult($result);
        if ($result === false) {
            throw new RedisProxyException('Invalid DB index');
        }
        $this->database = $database;
        $this->selectedDatabase = $database;
        return $result;
    }

    /**
     * @param string $key
     * @return string|null
     */
    public function type($key)
    {
        $this->init();
        $result = $this->driver->type($key);
        if ($this->actualDriver() === self::DRIVER_REDIS) {
            if (isset($this->redisTypeMap[$result])) {
                return $this->redisTypeMap[$result];
            }
        } elseif ($this->actualDriver() === self::DRIVER_PREDIS && $result instanceof Status) {
            $result = $result->getPayload();
            if (isset($this->predisTypeMap[$result])) {
                return $this->predisTypeMap[$result];
            }
        }
        return null;
    }

    /**
     * @param string|null $section
     * @return array
     */
    public function info($section = null)
    {
        $this->init();
        $section = $section ? strtolower($section) : $section;
        $result = $section === null ? $this->driver->info() : $this->driver->info($section);

        $databases = $section === null || $section === 'keyspace' ? $this->config('get', 'databases')['databases'] : null;
        $groupedResult = InfoHelper::createInfoArray($this, $result, $databases);
        if ($section === null) {
            return $groupedResult;
        }
        if (isset($groupedResult[$section])) {
            return $groupedResult[$section];
        }
        throw new RedisProxyException('Info section "' . $section . '" doesn\'t exist');
    }

    /**
     * @param string $key
     * @return string|null null if hash field is not set
     */
    public function get($key)
    {
        $this->init();
        $result = $this->driver->get($key);
        return $this->convertFalseToNull($result);
    }

    /**
     * Delete a key(s)
     * @param array $keys
     * @return int number of deleted keys
     */
    public function del(...$keys)
    {
        $this->prepareArguments('del', ...$keys);
        $this->init();
        return $this->driver->del(...$keys);
    }

    /**
     * Delete a key(s)
     * @param array $keys
     * @return int number of deleted keys
     */
    public function delete(...$keys)
    {
        return $this->del(...$keys);
    }

    /**
     * Increment the integer value of a key by one
     * @param string $key
     * @return integer
     */
    public function incr($key)
    {
        $this->init();
        return $this->driver->incr($key);
    }

    /**
     * Increment the integer value of a key by the given amount
     * @param string $key
     * @param integer $increment
     * @return integer
     */
    public function incrby($key, $increment = 1)
    {
        $this->init();
        return $this->driver->incrby($key, (int)$increment);
    }

    /**
     * Increment the float value of a key by the given amount
     * @param string $key
     * @param float $increment
     * @return float
     */
    public function incrbyfloat($key, $increment = 1)
    {
        $this->init();
        return $this->driver->incrbyfloat($key, $increment);
    }

    /**
     * Decrement the integer value of a key by one
     * @param string $key
     * @return integer
     */
    public function decr($key)
    {
        $this->init();
        return $this->driver->decr($key);
    }

    /**
     * Decrement the integer value of a key by the given number
     * @param string $key
     * @param integer $decrement
     * @return integer
     */
    public function decrby($key, $decrement = 1)
    {
        $this->init();
        return $this->driver->decrby($key, (int)$decrement);
    }

    /**
     * Decrement the float value of a key by the given amount
     * @param string $key
     * @param float $decrement
     * @return float
     */
    public function decrbyfloat($key, $decrement = 1)
    {
        return $this->incrbyfloat($key, (-1) * $decrement);
    }

    /**
     * Set multiple values to multiple keys
     * @param array $dictionary
     * @return boolean true on success
     * @throws RedisProxyException if number of arguments is wrong
     */
    public function mset(...$dictionary)
    {
        $this->init();
        if (is_array($dictionary[0])) {
            $result = $this->driver->mset(...$dictionary);
            return $this->transformResult($result);
        }
        $dictionary = $this->prepareKeyValue($dictionary, 'mset');
        $result = $this->driver->mset($dictionary);
        return $this->transformResult($result);
    }

    /**
     * Multi get
     * @param array $keys
     * @return array Returns the values for all specified keys. For every key that does not hold a string value or does not exist, null is returned
     */
    public function mget(...$keys)
    {
        $keys = array_unique($this->prepareArguments('mget', ...$keys));
        $this->init();
        $values = [];
        foreach ($this->driver->mget($keys) as $value) {
            $values[] = $this->convertFalseToNull($value);
        }
        return array_combine($keys, $values);
    }

    /**
     * Incrementally iterate the keys space
     * @param mixed $iterator iterator / cursor, use $iterator = null for start scanning, when $iterator is changed to 0 or '0', scanning is finished
     * @param string $pattern pattern for keys, use * as wild card
     * @param int $count
     * @return array|boolean|null list of found keys, returns null if $iterator is 0 or '0'
     */
    public function scan(&$iterator, $pattern = null, $count = null)
    {
        if ((string)$iterator === '0') {
            return null;
        }
        $this->init();
        if ($this->actualDriver() === self::DRIVER_PREDIS) {
            $returned = $this->driver->scan($iterator, ['match' => $pattern, 'count' => $count]);
            $iterator = $returned[0];
            return $returned[1];
        }
        return $this->driver->scan($iterator, $pattern, $count);
    }

    /**
     * Get the value of a hash field
     * @param string $key
     * @param string $field
     * @return string|null null if hash field is not set
     */
    public function hget($key, $field)
    {
        $this->init();
        $result = $this->driver->hget($key, $field);
        return $this->convertFalseToNull($result);
    }

    /**
     * Delete one or more hash fields, returns number of deleted fields
     * @param array $key
     * @param array $fields
     * @return int
     */
    public function hdel($key, ...$fields)
    {
        $fields = $this->prepareArguments('hdel', ...$fields);
        $this->init();
        return $this->driver->hdel($key, ...$fields);
    }

    /**
     * Increment the integer value of hash field by given number
     * @param string $key
     * @param string $field
     * @param int $increment
     * @return int
     */
    public function hincrby($key, $field, $increment = 1)
    {
        $this->init();
        return $this->driver->hincrby($key, $field, (int)$increment);
    }

    /**
     * Increment the float value of hash field by given amount
     * @param string $key
     * @param string $field
     * @param float $increment
     * @return float
     */
    public function hincrbyfloat($key, $field, $increment = 1)
    {
        $this->init();
        return $this->driver->hincrbyfloat($key, $field, $increment);
    }

    /**
     * Set multiple values to multiple hash fields
     * @param string $key
     * @param array $dictionary
     * @return boolean true on success
     * @throws RedisProxyException if number of arguments is wrong
     */
    public function hmset($key, ...$dictionary)
    {
        $this->init();
        if (is_array($dictionary[0])) {
            $result = $this->driver->hmset($key, ...$dictionary);
            return $this->transformResult($result);
        }
        $dictionary = $this->prepareKeyValue($dictionary, 'hmset');
        $result = $this->driver->hmset($key, $dictionary);
        return $this->transformResult($result);
    }

    /**
     * Multi hash get
     * @param string $key
     * @param array $fields
     * @return array Returns the values for all specified fields. For every field that does not hold a string value or does not exist, null is returned
     */
    public function hmget($key, ...$fields)
    {
        $fields = array_unique($this->prepareArguments('hmget', ...$fields));
        $this->init();
        $values = [];
        foreach ($this->driver->hmget($key, $fields) as $value) {
            $values[] = $this->convertFalseToNull($value);
        }
        return array_combine($fields, $values);
    }

    /**
     * Incrementally iterate hash fields and associated values
     * @param string $key
     * @param mixed $iterator iterator / cursor, use $iterator = null for start scanning, when $iterator is changed to 0 or '0', scanning is finished
     * @param string $pattern pattern for fields, use * as wild card
     * @param int $count
     * @return array|boolean|null list of found fields with associated values, returns null if $iterator is 0 or '0'
     */
    public function hscan($key, &$iterator, $pattern = null, $count = null)
    {
        if ((string)$iterator === '0') {
            return null;
        }
        $this->init();
        if ($this->actualDriver() === self::DRIVER_PREDIS) {
            $returned = $this->driver->hscan($key, $iterator, ['match' => $pattern, 'count' => $count]);
            $iterator = $returned[0];
            return $returned[1];
        }
        return $this->driver->hscan($key, $iterator, $pattern, $count);
    }

    /**
     * Add one or more members to a set
     * @param string $key
     * @param array $members
     * @return int number of new members added to set
     */
    public function sadd($key, ...$members)
    {
        $members = $this->prepareArguments('sadd', ...$members);
        $this->init();
        return $this->driver->sadd($key, ...$members);
    }

    /**
     * Remove and return one or multiple random members from a set
     * @param string $key
     * @param int $count number of members
     * @return mixed string if $count is null or 1 and $key exists, array if $count > 1 and $key exists, null if $key doesn't exist
     */
    public function spop($key, $count = 1)
    {
        $this->init();
        if ($count == 1 || $count === null) {
            $result = $this->driver->spop($key);
            return $this->convertFalseToNull($result);
        }

        $members = [];
        for ($i = 0; $i < $count; ++$i) {
            $member = $this->driver->spop($key);
            if (!$member) {
                break;
            }
            $members[] = $member;
        }
        return empty($members) ? null : $members;
    }

    /**
     * Incrementally iterate Set elements
     * @param string $key
     * @param mixed $iterator iterator / cursor, use $iterator = null for start scanning, when $iterator is changed to 0 or '0', scanning is finished
     * @param string $pattern pattern for member's values, use * as wild card
     * @param int $count
     * @return array|boolean|null list of found members, returns null if $iterator is 0 or '0'
     */
    public function sscan($key, &$iterator, $pattern = null, $count = null)
    {
        if ((string)$iterator === '0') {
            return null;
        }
        $this->init();
        if ($this->actualDriver() === self::DRIVER_PREDIS) {
            $returned = $this->driver->sscan($key, $iterator, ['match' => $pattern, 'count' => $count]);
            $iterator = $returned[0];
            return $returned[1];
        }
        return $this->driver->sscan($key, $iterator, $pattern, $count);
    }

    /**
     * Prepend one or multiple values to a list
     * @param string $key
     * @param array $elements
     * @return int the length of the list after the push operations
     */
    public function lpush($key, ...$elements)
    {
        $elements = $this->prepareArguments('lpush', ...$elements);
        $this->init();
        return $this->driver->lpush($key, ...$elements);
    }

    /**
     * Append one or multiple values to a list
     * @param string $key
     * @param array $elements
     * @return int the length of the list after the push operations
     */
    public function rpush($key, ...$elements)
    {
        $elements = $this->prepareArguments('rpush', ...$elements);
        $this->init();
        return $this->driver->rpush($key, ...$elements);
    }

    /**
     * Remove and get the first element in a list
     * @param string $key
     * @return string|null
     */
    public function lpop($key)
    {
        $this->init();
        $result = $this->driver->lpop($key);
        return $this->convertFalseToNull($result);
    }

    /**
     * Remove and get the last element in a list
     * @param string $key
     * @return string|null
     */
    public function rpop($key)
    {
        $this->init();
        $result = $this->driver->rpop($key);
        return $this->convertFalseToNull($result);
    }

    /**
     * Get an element from a list by its index
     * @param string $key
     * @param int $index zero-based, so 0 means the first element, 1 the second element and so on. -1 means the last element, -2 means the penultimate and so forth
     * @return string|null
     */
    public function lindex($key, $index)
    {
        $this->init();
        $result = $this->driver->lindex($key, $index);
        return $this->convertFalseToNull($result);
    }

    /**
     * Returns null instead of false for Redis driver
     * @param mixed $result
     * @return mixed
     */
    private function convertFalseToNull($result)
    {
        return $this->actualDriver() === self::DRIVER_REDIS && $result === false ? null : $result;
    }

    /**
     * Transforms Predis result Payload to boolean
     * @param mixed $result
     * @return mixed
     */
    private function transformResult($result)
    {
        if ($this->actualDriver() === self::DRIVER_PREDIS && $result instanceof Status) {
            $result = $result->getPayload() === 'OK';
        }
        return $result;
    }

    /**
     * Create array from input array - odd keys are used as keys, even keys are used as values
     * @param array $dictionary
     * @param string $command
     * @return array
     * @throws RedisProxyException if number of keys is not the same as number of values
     */
    private function prepareKeyValue(array $dictionary, $command)
    {
        $keys = array_values(array_filter($dictionary, function ($key) {
            return $key % 2 == 0;
        }, ARRAY_FILTER_USE_KEY));
        $values = array_values(array_filter($dictionary, function ($key) {
            return $key % 2 == 1;
        }, ARRAY_FILTER_USE_KEY));

        if (count($keys) != count($values)) {
            throw new RedisProxyException("Wrong number of arguments for $command command");
        }
        return array_combine($keys, $values);
    }

    private function prepareArguments($command, ...$params)
    {
        if (!isset($params[0])) {
            throw new RedisProxyException("Wrong number of arguments for $command command");
        }
        if (is_array($params[0])) {
            $params = $params[0];
        }
        return $params;
    }
}


1			<?php
2
3			namespace RedisProxy;
4
5			use Exception;
6			use Predis\Client;
7			use Predis\Response\Status;
8			use Redis;
9
10			/**
11			* @method mixed config(string $command, $argument = null)
12			* @method int dbsize() Return the number of keys in the selected database
13			* @method boolean set(string $key, string $value) Set the string value of a key
14			* @method array keys(string $pattern) Find all keys matching the given pattern
15			* @method int hset(string $key, string $field, string $value) Set the string value of a hash field
16			* @method array hkeys(string $key) Get all fields in a hash (without values)
17			* @method array hgetall(string $key) Get all fields and values in a hash
18			* @method int hlen(string $key) Get the number of fields in a hash
19			* @method array smembers(string $key) Get all the members in a set
20			* @method int scard(string $key) Get the number of members in a set
21			* @method int llen(string $key) Get the length of a list
22			* @method array lrange(string $key, int $start, int $stop) Get a range of elements from a list
23			* @method boolean flushall() Remove all keys from all databases
24			* @method boolean flushdb() Remove all keys from the current database
25			*/
26			class RedisProxy
27			{
28			const DRIVER_REDIS = 'redis';
29
30			const DRIVER_PREDIS = 'predis';
31
32			const TYPE_STRING = 'string';
33
34			const TYPE_SET = 'set';
35
36			const TYPE_HASH = 'hash';
37
38			const TYPE_LIST = 'list';
39
40			const TYPE_SORTED_SET = 'sorted_set';
41
42			private $driver;
43
44			private $host;
45
46			private $port;
47
48			private $database = 0;
49
50			private $selectedDatabase = 0;
51
52			private $timeout;
53
54			private $supportedDrivers = [
55			self::DRIVER_REDIS,
56			self::DRIVER_PREDIS,
57			];
58
59			private $driversOrder = [];
60
61			private $redisTypeMap = [
62			Redis::REDIS_STRING => self::TYPE_STRING,
63			Redis::REDIS_SET => self::TYPE_SET,
64			Redis::REDIS_HASH => self::TYPE_HASH,
65			Redis::REDIS_LIST => self::TYPE_LIST,
66			Redis::REDIS_ZSET => self::TYPE_SORTED_SET,
67			];
68
69			private $predisTypeMap = [
70			'string' => self::TYPE_STRING,
71			'set' => self::TYPE_SET,
72			'hash' => self::TYPE_HASH,
73			'list' => self::TYPE_LIST,
74			'zset' => self::TYPE_SORTED_SET,
75			];
76
77	196		public function __construct($host, $port, $database = 0, $timeout = null)
78			{
79	196		$this->host = $host;
80	196		$this->port = $port;
81	196		$this->database = $database;
82	196		$this->timeout = $timeout;
83	196		$this->driversOrder = $this->supportedDrivers;
84	196		}
85
86			/**
87			* Set driver priorities - default is 1. redis, 2. predis
88			* @param array $driversOrder
89			* @return RedisProxy
90			* @throws RedisProxyException if some driver is not supported
91			*/
92	196		public function setDriversOrder(array $driversOrder)
93			{
94	196		foreach ($driversOrder as $driver) {
95	194		if (!in_array($driver, $this->supportedDrivers)) {
96	194		throw new RedisProxyException('Driver "' . $driver . '" is not supported');
97			}
98			}
99	194		$this->driversOrder = $driversOrder;
100	194		return $this;
101			}
102
103	194		private function init()
104			{
105	194		$this->prepareDriver();
106	192		$this->select($this->database);
107	192		}
108
109	194		private function prepareDriver()
110			{
111	194		if ($this->driver !== null) {
112	192		return;
113			}
114
115	194		foreach ($this->driversOrder as $preferredDriver) {
116	192		if ($preferredDriver === self::DRIVER_REDIS && extension_loaded('redis')) {
117	96		$this->driver = new Redis();
118	96		return;
119			}
120	96		if ($preferredDriver === self::DRIVER_PREDIS && class_exists('Predis\Client')) {
121	96		$this->driver = new Client();
122	96		return;
123			}
124			}
125	2		throw new RedisProxyException('No driver available');
126			}
127
128			/**
129			* @return string\|null
130			*/
131	194		public function actualDriver()
132			{
133	194		if ($this->driver instanceof Redis) {
134	96		return self::DRIVER_REDIS;
135			}
136	102		if ($this->driver instanceof Client) {
137	96		return self::DRIVER_PREDIS;
138			}
139	10		return null;
140			}
141
142	192		private function connect($host, $port, $timeout = null)
143			{
144	192		return $this->driver->connect($host, $port, $timeout);
145			}
146
147	192		private function isConnected()
148			{
149	192		return $this->driver->isConnected();
150			}
151
152	194		public function __call($name, $arguments)
153			{
154	194		$this->init();
155	192		$name = strtolower($name);
156			try {
157	192		$result = call_user_func_array([$this->driver, $name], $arguments);
158	4		} catch (Exception $e) {
159	4		throw new RedisProxyException("Error for command '$name', use getPrevious() for more info", 1484162284, $e);
160			}
161	192		return $this->transformResult($result);
162			}
163
164			/**
165			* @param int $database
166			* @return boolean true on success
167			* @throws RedisProxyException on failure
168			*/
169	192		public function select($database)
170			{
171	192		$this->prepareDriver();
172	192		if (!$this->isConnected()) {
173	192		$this->connect($this->host, $this->port, $this->timeout);
174			}
175	192		if ($database == $this->selectedDatabase) {
176	192		return true;
177			}
178			try {
179	12		$result = $this->driver->select($database);
180	2		} catch (Exception $e) {
181	2		throw new RedisProxyException('Invalid DB index');
182			}
183	10		$result = $this->transformResult($result);
184	10		if ($result === false) {
185	2		throw new RedisProxyException('Invalid DB index');
186			}
187	8		$this->database = $database;
188	8		$this->selectedDatabase = $database;
189	8		return $result;
190			}
191
192			/**
193			* @param string $key
194			* @return string\|null
195			*/
196	4		public function type($key)
197			{
198	4		$this->init();
199	4		$result = $this->driver->type($key);
200	4		if ($this->actualDriver() === self::DRIVER_REDIS) {
201	2		if (isset($this->redisTypeMap[$result])) {
202	2		return $this->redisTypeMap[$result];
203			}
204	2		} elseif ($this->actualDriver() === self::DRIVER_PREDIS && $result instanceof Status) {
205	2		$result = $result->getPayload();
206	2		if (isset($this->predisTypeMap[$result])) {
207	2		return $this->predisTypeMap[$result];
208			}
209			}
210	4		return null;
211			}
212
213			/**
214			* @param string\|null $section
215			* @return array
216			*/
217	8		public function info($section = null)
218			{
219	8		$this->init();
220	8		$section = $section ? strtolower($section) : $section;
221	8		$result = $section === null ? $this->driver->info() : $this->driver->info($section);
222
223	8		$databases = $section === null \|\| $section === 'keyspace' ? $this->config('get', 'databases')['databases'] : null;
224	8		$groupedResult = InfoHelper::createInfoArray($this, $result, $databases);
225	8		if ($section === null) {
226	4		return $groupedResult;
227			}
228	8		if (isset($groupedResult[$section])) {
229	4		return $groupedResult[$section];
230			}
231	4		throw new RedisProxyException('Info section "' . $section . '" doesn\'t exist');
232			}
233
234			/**
235			* @param string $key
236			* @return string\|null null if hash field is not set
237			*/
238	40		public function get($key)
239			{
240	40		$this->init();
241	40		$result = $this->driver->get($key);
242	40		return $this->convertFalseToNull($result);
243			}
244
245			/**
246			* Delete a key(s)
247			* @param array $keys
248			* @return int number of deleted keys
249			*/
250	28		public function del(...$keys)
251			{
252	28		$this->prepareArguments('del', ...$keys);
253	20		$this->init();
254	20		return $this->driver->del(...$keys);
255			}
256
257			/**
258			* Delete a key(s)
259			* @param array $keys
260			* @return int number of deleted keys
261			*/
262	12		public function delete(...$keys)
263			{
264	12		return $this->del(...$keys);
265			}
266
267			/**
268			* Increment the integer value of a key by one
269			* @param string $key
270			* @return integer
271			*/
272	4		public function incr($key)
273			{
274	4		$this->init();
275	4		return $this->driver->incr($key);
276			}
277
278			/**
279			* Increment the integer value of a key by the given amount
280			* @param string $key
281			* @param integer $increment
282			* @return integer
283			*/
284	4		public function incrby($key, $increment = 1)
285			{
286	4		$this->init();
287	4		return $this->driver->incrby($key, (int)$increment);
288			}
289
290			/**
291			* Increment the float value of a key by the given amount
292			* @param string $key
293			* @param float $increment
294			* @return float
295			*/
296	8		public function incrbyfloat($key, $increment = 1)
297			{
298	8		$this->init();
299	8		return $this->driver->incrbyfloat($key, $increment);
300			}
301
302			/**
303			* Decrement the integer value of a key by one
304			* @param string $key
305			* @return integer
306			*/
307	4		public function decr($key)
308			{
309	4		$this->init();
310	4		return $this->driver->decr($key);
311			}
312
313			/**
314			* Decrement the integer value of a key by the given number
315			* @param string $key
316			* @param integer $decrement
317			* @return integer
318			*/
319	4		public function decrby($key, $decrement = 1)
320			{
321	4		$this->init();
322	4		return $this->driver->decrby($key, (int)$decrement);
323			}
324
325			/**
326			* Decrement the float value of a key by the given amount
327			* @param string $key
328			* @param float $decrement
329			* @return float
330			*/
331	4		public function decrbyfloat($key, $decrement = 1)
332			{
333	4		return $this->incrbyfloat($key, (-1) * $decrement);
334			}
335
336			/**
337			* Set multiple values to multiple keys
338			* @param array $dictionary
339			* @return boolean true on success
340			* @throws RedisProxyException if number of arguments is wrong
341			*/
342	12	View Code Duplication	public function mset(...$dictionary)
343			{
344	12		$this->init();
345	12		if (is_array($dictionary[0])) {
346	8		$result = $this->driver->mset(...$dictionary);
347	8		return $this->transformResult($result);
348			}
349	8		$dictionary = $this->prepareKeyValue($dictionary, 'mset');
350	4		$result = $this->driver->mset($dictionary);
351	4		return $this->transformResult($result);
352			}
353
354			/**
355			* Multi get
356			* @param array $keys
357			* @return array Returns the values for all specified keys. For every key that does not hold a string value or does not exist, null is returned
358			*/
359	4		public function mget(...$keys)
360			{
361	4		$keys = array_unique($this->prepareArguments('mget', ...$keys));
362	4		$this->init();
363	4		$values = [];
364	4		foreach ($this->driver->mget($keys) as $value) {
365	4		$values[] = $this->convertFalseToNull($value);
366			}
367	4		return array_combine($keys, $values);
368			}
369
370			/**
371			* Incrementally iterate the keys space
372			* @param mixed $iterator iterator / cursor, use $iterator = null for start scanning, when $iterator is changed to 0 or '0', scanning is finished
373			* @param string $pattern pattern for keys, use * as wild card
374			* @param int $count
375			* @return array\|boolean\|null list of found keys, returns null if $iterator is 0 or '0'
376			*/
377	4	View Code Duplication	public function scan(&$iterator, $pattern = null, $count = null)
378			{
379	4		if ((string)$iterator === '0') {
380	4		return null;
381			}
382	4		$this->init();
383	4		if ($this->actualDriver() === self::DRIVER_PREDIS) {
384	2		$returned = $this->driver->scan($iterator, ['match' => $pattern, 'count' => $count]);
385	2		$iterator = $returned[0];
386	2		return $returned[1];
387			}
388	2		return $this->driver->scan($iterator, $pattern, $count);
389			}
390
391			/**
392			* Get the value of a hash field
393			* @param string $key
394			* @param string $field
395			* @return string\|null null if hash field is not set
396			*/
397	16		public function hget($key, $field)
398			{
399	16		$this->init();
400	16		$result = $this->driver->hget($key, $field);
401	16		return $this->convertFalseToNull($result);
402			}
403
404			/**
405			* Delete one or more hash fields, returns number of deleted fields
406			* @param array $key
407			* @param array $fields
408			* @return int
409			*/
410	8		public function hdel($key, ...$fields)
411			{
412	8		$fields = $this->prepareArguments('hdel', ...$fields);
413	8		$this->init();
414	8		return $this->driver->hdel($key, ...$fields);
415			}
416
417			/**
418			* Increment the integer value of hash field by given number
419			* @param string $key
420			* @param string $field
421			* @param int $increment
422			* @return int
423			*/
424	4		public function hincrby($key, $field, $increment = 1)
425			{
426	4		$this->init();
427	4		return $this->driver->hincrby($key, $field, (int)$increment);
428			}
429
430			/**
431			* Increment the float value of hash field by given amount
432			* @param string $key
433			* @param string $field
434			* @param float $increment
435			* @return float
436			*/
437	4		public function hincrbyfloat($key, $field, $increment = 1)
438			{
439	4		$this->init();
440	4		return $this->driver->hincrbyfloat($key, $field, $increment);
441			}
442
443			/**
444			* Set multiple values to multiple hash fields
445			* @param string $key
446			* @param array $dictionary
447			* @return boolean true on success
448			* @throws RedisProxyException if number of arguments is wrong
449			*/
450	12	View Code Duplication	public function hmset($key, ...$dictionary)
451			{
452	12		$this->init();
453	12		if (is_array($dictionary[0])) {
454	8		$result = $this->driver->hmset($key, ...$dictionary);
455	8		return $this->transformResult($result);
456			}
457	8		$dictionary = $this->prepareKeyValue($dictionary, 'hmset');
458	4		$result = $this->driver->hmset($key, $dictionary);
459	4		return $this->transformResult($result);
460			}
461
462			/**
463			* Multi hash get
464			* @param string $key
465			* @param array $fields
466			* @return array Returns the values for all specified fields. For every field that does not hold a string value or does not exist, null is returned
467			*/
468	4		public function hmget($key, ...$fields)
469			{
470	4		$fields = array_unique($this->prepareArguments('hmget', ...$fields));
471	4		$this->init();
472	4		$values = [];
473	4		foreach ($this->driver->hmget($key, $fields) as $value) {
474	4		$values[] = $this->convertFalseToNull($value);
475			}
476	4		return array_combine($fields, $values);
477			}
478
479			/**
480			* Incrementally iterate hash fields and associated values
481			* @param string $key
482			* @param mixed $iterator iterator / cursor, use $iterator = null for start scanning, when $iterator is changed to 0 or '0', scanning is finished
483			* @param string $pattern pattern for fields, use * as wild card
484			* @param int $count
485			* @return array\|boolean\|null list of found fields with associated values, returns null if $iterator is 0 or '0'
486			*/
487	4	View Code Duplication	public function hscan($key, &$iterator, $pattern = null, $count = null)
488			{
489	4		if ((string)$iterator === '0') {
490	4		return null;
491			}
492	4		$this->init();
493	4		if ($this->actualDriver() === self::DRIVER_PREDIS) {
494	2		$returned = $this->driver->hscan($key, $iterator, ['match' => $pattern, 'count' => $count]);
495	2		$iterator = $returned[0];
496	2		return $returned[1];
497			}
498	2		return $this->driver->hscan($key, $iterator, $pattern, $count);
499			}
500
501			/**
502			* Add one or more members to a set
503			* @param string $key
504			* @param array $members
505			* @return int number of new members added to set
506			*/
507	16		public function sadd($key, ...$members)
508			{
509	16		$members = $this->prepareArguments('sadd', ...$members);
510	16		$this->init();
511	16		return $this->driver->sadd($key, ...$members);
512			}
513
514			/**
515			* Remove and return one or multiple random members from a set
516			* @param string $key
517			* @param int $count number of members
518			* @return mixed string if $count is null or 1 and $key exists, array if $count > 1 and $key exists, null if $key doesn't exist
519			*/
520	4		public function spop($key, $count = 1)
521			{
522	4		$this->init();
523	4		if ($count == 1 \|\| $count === null) {
524	4		$result = $this->driver->spop($key);
525	4		return $this->convertFalseToNull($result);
526			}
527
528	4		$members = [];
529	4		for ($i = 0; $i < $count; ++$i) {
530	4		$member = $this->driver->spop($key);
531	4		if (!$member) {
532	4		break;
533			}
534	4		$members[] = $member;
535			}
536	4		return empty($members) ? null : $members;
537			}
538
539			/**
540			* Incrementally iterate Set elements
541			* @param string $key
542			* @param mixed $iterator iterator / cursor, use $iterator = null for start scanning, when $iterator is changed to 0 or '0', scanning is finished
543			* @param string $pattern pattern for member's values, use * as wild card
544			* @param int $count
545			* @return array\|boolean\|null list of found members, returns null if $iterator is 0 or '0'
546			*/
547	4	View Code Duplication	public function sscan($key, &$iterator, $pattern = null, $count = null)
548			{
549	4		if ((string)$iterator === '0') {
550	4		return null;
551			}
552	4		$this->init();
553	4		if ($this->actualDriver() === self::DRIVER_PREDIS) {
554	2		$returned = $this->driver->sscan($key, $iterator, ['match' => $pattern, 'count' => $count]);
555	2		$iterator = $returned[0];
556	2		return $returned[1];
557			}
558	2		return $this->driver->sscan($key, $iterator, $pattern, $count);
559			}
560
561			/**
562			* Prepend one or multiple values to a list
563			* @param string $key
564			* @param array $elements
565			* @return int the length of the list after the push operations
566			*/
567	28		public function lpush($key, ...$elements)
568			{
569	28		$elements = $this->prepareArguments('lpush', ...$elements);
570	28		$this->init();
571	28		return $this->driver->lpush($key, ...$elements);
572			}
573
574			/**
575			* Append one or multiple values to a list
576			* @param string $key
577			* @param array $elements
578			* @return int the length of the list after the push operations
579			*/
580	12		public function rpush($key, ...$elements)
581			{
582	12		$elements = $this->prepareArguments('rpush', ...$elements);
583	12		$this->init();
584	12		return $this->driver->rpush($key, ...$elements);
585			}
586
587			/**
588			* Remove and get the first element in a list
589			* @param string $key
590			* @return string\|null
591			*/
592	4		public function lpop($key)
593			{
594	4		$this->init();
595	4		$result = $this->driver->lpop($key);
596	4		return $this->convertFalseToNull($result);
597			}
598
599			/**
600			* Remove and get the last element in a list
601			* @param string $key
602			* @return string\|null
603			*/
604	4		public function rpop($key)
605			{
606	4		$this->init();
607	4		$result = $this->driver->rpop($key);
608	4		return $this->convertFalseToNull($result);
609			}
610
611			/**
612			* Get an element from a list by its index
613			* @param string $key
614			* @param int $index zero-based, so 0 means the first element, 1 the second element and so on. -1 means the last element, -2 means the penultimate and so forth
615			* @return string\|null
616			*/
617	12		public function lindex($key, $index)
618			{
619	12		$this->init();
620	12		$result = $this->driver->lindex($key, $index);
621	12		return $this->convertFalseToNull($result);
622			}
623
624			/**
625			* Returns null instead of false for Redis driver
626			* @param mixed $result
627			* @return mixed
628			*/
629	80		private function convertFalseToNull($result)
630			{
631	80		return $this->actualDriver() === self::DRIVER_REDIS && $result === false ? null : $result;
632			}
633
634			/**
635			* Transforms Predis result Payload to boolean
636			* @param mixed $result
637			* @return mixed
638			*/
639	192		private function transformResult($result)
640			{
641	192		if ($this->actualDriver() === self::DRIVER_PREDIS && $result instanceof Status) {
642	96		$result = $result->getPayload() === 'OK';
643			}
644	192		return $result;
645			}
646
647			/**
648			* Create array from input array - odd keys are used as keys, even keys are used as values
649			* @param array $dictionary
650			* @param string $command
651			* @return array
652			* @throws RedisProxyException if number of keys is not the same as number of values
653			*/
654	16		private function prepareKeyValue(array $dictionary, $command)
655			{
656			$keys = array_values(array_filter($dictionary, function ($key) {
657	16		return $key % 2 == 0;
658	16		}, ARRAY_FILTER_USE_KEY));
659	16		$values = array_values(array_filter($dictionary, function ($key) {
660	16		return $key % 2 == 1;
661	16		}, ARRAY_FILTER_USE_KEY));
662
663	16		if (count($keys) != count($values)) {
664	8		throw new RedisProxyException("Wrong number of arguments for $command command");
665			}
666	8		return array_combine($keys, $values);
667			}
668
669	84		private function prepareArguments($command, ...$params)
670			{
671	84		if (!isset($params[0])) {
672	8		throw new RedisProxyException("Wrong number of arguments for $command command");
673			}
674	76		if (is_array($params[0])) {
675	32		$params = $params[0];
676			}
677	76		return $params;
678			}
679			}
680

lulco / redis-proxy

Pull Request — master (#5)

RedisProxy::decrbyfloat() A

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