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<?php |
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/* |
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* This file is part of the PHPProm package. |
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* |
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* (c) Philip Lehmann-Böhm <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace PHPProm\Storage; |
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/** |
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* Class Memcached |
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* Storage implementation using memcached. |
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* @package PHPProm\Storage |
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*/ |
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class Memcached extends AbstractStorage { |
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/** |
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* @var \Memcached |
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* The memcached connection. |
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*/ |
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protected $memcached; |
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/** |
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* @var string |
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* The global key prefix. |
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*/ |
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protected $prefix; |
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/** |
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* Memcached constructor. |
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* |
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* @param string $host |
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* the connection host |
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* @param int $port |
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* the connection port, default 11211 |
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* @param string $prefix |
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* the global key prefix to use, default 'PHPProm:' |
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*/ |
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public function __construct($host, $port = 11211, $prefix = 'PHPProm:') { |
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parent::__construct(); |
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$this->memcached = new \Memcached(); |
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$this->memcached->addServer($host, $port); |
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$this->prefix = $prefix; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function storeMeasurement($metric, $key, $value) { |
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$this->memcached->set($this->prefix.$metric.':'.$key, $value); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function incrementMeasurement($metric, $key) { |
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// Increment doesn't work on older versions, see |
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// https://github.com/php-memcached-dev/php-memcached/issues/133 |
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$value = $this->memcached->get($this->prefix.$metric.':'.$key); |
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if ($value === false) { |
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$value = 0; |
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} |
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$value++; |
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$this->storeMeasurement($metric, $key, $value); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getMeasurements($metric, array $keys, $defaultValue = 'Nan') { |
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$measurements = []; |
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foreach ($keys as $key) { |
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$measurements[$key] = $defaultValue; |
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} |
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$prefixedKeys = array_map(function($key) use ($metric) { |
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return $this->prefix.$metric.':'.$key; |
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}, $keys); |
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foreach ($this->memcached->getMulti($prefixedKeys) as $key => $value) { |
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$unprefixedKey = substr($key, strlen($this->prefix) + strlen($metric) + 1); |
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$measurements[$unprefixedKey] = $value !== false ? (float)$value : $defaultValue; |
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} |
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return $measurements; |
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} |
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} |
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philiplb /
PHPProm
