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- Veröffentlicht
- 27.10.2014
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Redis.php
001 <?php
002 namespace OAuth\Common\Storage;
003
004 use OAuth\Common\Token\TokenInterface;
005 use OAuth\Common\Storage\Exception\StorageException;
006 use OAuth\Common\Storage\Exception\TokenNotFoundException;
007 use Predis\Client as Predis;
008
009 /*
010 * Stores a token in a Redis server. Requires the Predis library available at https://github.com/nrk/predis
011 */
012 class Redis implements TokenStorageInterface
013 {
014 /**
015 * @var string
016 */
017 protected $key;
018
019 /**
020 * @var object|\Redis
021 */
022 protected $redis;
023
024 /**
025 * @var object|TokenInterface
026 */
027 protected $cachedTokens;
028
029 /**
030 * @param Predis $redis An instantiated and connected redis client
031 * @param string $key The key to store the token under in redis.
032 */
033 public function __construct(Predis $redis, $key)
034 {
035 $this->redis = $redis;
036 $this->key = $key;
037 $this->cachedTokens = array();
038 }
039
040 /**
041 * @return \OAuth\Common\Token\TokenInterface
042 * @throws TokenNotFoundException
043 */
044 public function retrieveAccessToken($service)
045 {
046 if (!$this->hasAccessToken($service))
047 {
048 throw new TokenNotFoundException('Token not found in redis');
049 }
050
051 if (isset($this->cachedTokens[$service]))
052 {
053 return $this->cachedTokens[$service];
054 }
055
056 $val = $this->redis->hget($this->key, $service);
057
058 return $this->cachedTokens[$service] = unserialize($val);
059 }
060
061 /**
062 * @param \OAuth\Common\Token\TokenInterface $token
063 * @throws StorageException
064 */
065 public function storeAccessToken($service, TokenInterface $token)
066 {
067 // (over)write the token
068 $this->redis->hset($this->key, $service, serialize($token));
069 $this->cachedTokens[$service] = $token;
070
071 // allow chaining
072 return $this;
073 }
074
075 /**
076 * @return bool
077 */
078 public function hasAccessToken($service)
079 {
080 if (isset($this->cachedTokens[$service]) &&
081 $this->cachedTokens[$service] instanceof TokenInterface)
082 {
083 return true;
084 }
085
086 return $this->redis->hexists($this->key, $service);
087 }
088
089 /**
090 * Delete the user's token. Aka, log out.
091 */
092 public function clearToken($service)
093 {
094 $this->redis->hdel($this->key, $service);
095 unset($this->cachedTokens[$service]);
096
097 // allow chaining
098 return $this;
099 }
100
101 /**
102 * Delete *ALL* user tokens. Use with care. Most of the time you will likely
103 * want to use clearToken() instead.
104 */
105 public function clearAllTokens()
106 {
107 // memory
108 $this->cachedTokens = array();
109
110 // redis
111 $keys = $this->redis->hkeys($this->key);
112 $me = $this; // 5.3 compat
113
114 // pipeline for performance
115 $this->redis->pipeline(function($pipe) use($keys, $me) {
116
117 foreach ($keys as $k) {
118
119 $pipe->hdel($me->getKey(), $k);
120
121 }
122
123 });
124
125 // allow chaining
126 return $this;
127 }
128
129 /**
130 * @return Predis $redis
131 */
132 public function getRedis()
133 {
134 return $this->redis;
135 }
136
137 /**
138 * @return string $key
139 */
140 public function getKey()
141 {
142 return $this->key;
143 }
144 }
145