PhutilKeyValueCacheNamespace.php
ed335c485c0aproduction

PhutilKeyValueCacheNamespace.php
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			<?php

			final class PhutilKeyValueCacheNamespace extends PhutilKeyValueCacheProxy {

			private $namespace;

			public function setNamespace($namespace) {
			if (strpos($namespace, ':') !== false) {
			throw new Exception('Namespace can\'t contain colons');
			}

			$this->namespace = $namespace.':';

			return $this;
			}

			public function setKeys(array $keys, $ttl = null) {
			return parent::setKeys(array_combine(
			$this->prefixKeys(array_keys($keys)),
			$keys), $ttl);
			}

			public function getKeys(array $keys) {
			$results = parent::getKeys($this->prefixKeys($keys));

			if (!$results) {
			return array();
			}

			return array_combine(
			$this->unprefixKeys(array_keys($results)),
			$results);
			}

			public function deleteKeys(array $keys) {
			return parent::deleteKeys($this->prefixKeys($keys));
			}

			private function prefixKeys(array $keys) {
			if ($this->namespace == null) {
			throw new Exception('Namespace not set');
			}

			$prefixed_keys = array();
			foreach ($keys as $key) {
			$prefixed_keys[] = $this->namespace.$key;
			}

			return $prefixed_keys;
			}

			private function unprefixKeys(array $keys) {
			if ($this->namespace == null) {
			throw new Exception('Namespace not set');
			}

			$unprefixed_keys = array();
			foreach ($keys as $key) {
			$unprefixed_keys[] = substr($key, strlen($this->namespace));
			}

			return $unprefixed_keys;
			}

			}