wenjy /
php-redis
| Total Complexity | 48 |
| Total Lines | 563 |
| Duplicated Lines | 0 % |
| Changes | 0 | ||
Complex classes like Connection often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use Connection, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 251 | class Connection |
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| 252 | { |
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| 253 | /** |
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| 254 | * @var string the hostname or ip address to use for connecting to the redis server. Defaults to 'localhost'. |
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| 255 | * If [[unixSocket]] is specified, hostname and [[port]] will be ignored. |
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| 256 | */ |
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| 257 | public $hostname = 'localhost'; |
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| 258 | /** |
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| 259 | * @var integer the port to use for connecting to the redis server. Default port is 6379. |
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| 260 | * If [[unixSocket]] is specified, [[hostname]] and port will be ignored. |
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| 261 | */ |
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| 262 | public $port = 6379; |
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| 263 | /** |
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| 264 | * @var string the unix socket path (e.g. `/var/run/redis/redis.sock`) to use for connecting to the redis server. |
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| 265 | * This can be used instead of [[hostname]] and [[port]] to connect to the server using a unix socket. |
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| 266 | * If a unix socket path is specified, [[hostname]] and [[port]] will be ignored. |
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| 267 | */ |
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| 268 | public $unixSocket; |
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| 269 | /** |
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| 270 | * @var string the password for establishing DB connection. Defaults to null meaning no AUTH command is sent. |
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| 271 | * See http://redis.io/commands/auth |
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| 272 | */ |
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| 273 | public $password; |
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| 274 | /** |
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| 275 | * @var integer the redis database to use. This is an integer value starting from 0. Defaults to 0. |
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| 276 | */ |
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| 277 | public $database = 0; |
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| 278 | /** |
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| 279 | * @var float timeout to use for connection to redis. If not set the timeout set in php.ini will be used: `ini_get("default_socket_timeout")`. |
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| 280 | */ |
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| 281 | public $connectionTimeout = null; |
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| 282 | /** |
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| 283 | * @var float timeout to use for redis socket when reading and writing data. If not set the php default value will be used. |
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| 284 | */ |
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| 285 | public $dataTimeout = null; |
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| 286 | /** |
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| 287 | * @var integer Bitmask field which may be set to any combination of connection flags passed to [stream_socket_client()](http://php.net/manual/en/function.stream-socket-client.php). |
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| 288 | * Currently the select of connection flags is limited to `STREAM_CLIENT_CONNECT` (default), `STREAM_CLIENT_ASYNC_CONNECT` and `STREAM_CLIENT_PERSISTENT`. |
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| 289 | * |
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| 290 | * > Warning: `STREAM_CLIENT_PERSISTENT` will make PHP reuse connections to the same server. If you are using multiple |
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| 291 | * > connection objects to refer to different redis [[$database|databases]] on the same [[port]], redis commands may |
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| 292 | * > get executed on the wrong database. `STREAM_CLIENT_PERSISTENT` is only safe to use if you use only one database. |
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| 293 | * > |
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| 294 | * > You may still use persistent connections in this case when disambiguating ports as described |
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| 295 | * > in [a comment on the PHP manual](http://php.net/manual/en/function.stream-socket-client.php#105393) |
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| 296 | * > e.g. on the connection used for session storage, specify the port as: |
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| 297 | * > |
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| 298 | * > ```php |
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| 299 | * > 'port' => '6379/session' |
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| 300 | * > ``` |
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| 301 | * |
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| 302 | * @see http://php.net/manual/en/function.stream-socket-client.php |
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| 303 | */ |
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| 304 | public $socketClientFlags = STREAM_CLIENT_CONNECT; |
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| 305 | /** |
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| 306 | * @var integer The number of times a command execution should be retried when a connection failure occurs. |
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| 307 | * This is used in [[executeCommand()]] when a [[SocketException]] is thrown. |
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| 308 | * Defaults to 0 meaning no retries on failure. |
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| 309 | */ |
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| 310 | public $retries = 0; |
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| 311 | |||
| 312 | /** |
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| 313 | * @var array List of available redis commands. |
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| 314 | * @see http://redis.io/commands |
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| 315 | */ |
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| 316 | public $redisCommands = [ |
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| 317 | 'APPEND', // Append a value to a key |
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| 318 | 'AUTH', // Authenticate to the server |
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| 319 | 'BGREWRITEAOF', // Asynchronously rewrite the append-only file |
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| 320 | 'BGSAVE', // Asynchronously save the dataset to disk |
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| 321 | 'BITCOUNT', // Count set bits in a string |
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| 322 | 'BITFIELD', // Perform arbitrary bitfield integer operations on strings |
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| 323 | 'BITOP', // Perform bitwise operations between strings |
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| 324 | 'BITPOS', // Find first bit set or clear in a string |
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| 325 | 'BLPOP', // Remove and get the first element in a list, or block until one is available |
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| 326 | 'BRPOP', // Remove and get the last element in a list, or block until one is available |
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| 327 | 'BRPOPLPUSH', // Pop a value from a list, push it to another list and return it; or block until one is available |
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| 328 | 'CLIENT KILL', // Kill the connection of a client |
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| 329 | 'CLIENT LIST', // Get the list of client connections |
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| 330 | 'CLIENT GETNAME', // Get the current connection name |
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| 331 | 'CLIENT PAUSE', // Stop processing commands from clients for some time |
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| 332 | 'CLIENT REPLY', // Instruct the server whether to reply to commands |
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| 333 | 'CLIENT SETNAME', // Set the current connection name |
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| 334 | 'CLUSTER ADDSLOTS', // Assign new hash slots to receiving node |
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| 335 | 'CLUSTER COUNTKEYSINSLOT', // Return the number of local keys in the specified hash slot |
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| 336 | 'CLUSTER DELSLOTS', // Set hash slots as unbound in receiving node |
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| 337 | 'CLUSTER FAILOVER', // Forces a slave to perform a manual failover of its master. |
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| 338 | 'CLUSTER FORGET', // Remove a node from the nodes table |
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| 339 | 'CLUSTER GETKEYSINSLOT', // Return local key names in the specified hash slot |
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| 340 | 'CLUSTER INFO', // Provides info about Redis Cluster node state |
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| 341 | 'CLUSTER KEYSLOT', // Returns the hash slot of the specified key |
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| 342 | 'CLUSTER MEET', // Force a node cluster to handshake with another node |
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| 343 | 'CLUSTER NODES', // Get Cluster config for the node |
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| 344 | 'CLUSTER REPLICATE', // Reconfigure a node as a slave of the specified master node |
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| 345 | 'CLUSTER RESET', // Reset a Redis Cluster node |
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| 346 | 'CLUSTER SAVECONFIG', // Forces the node to save cluster state on disk |
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| 347 | 'CLUSTER SETSLOT', // Bind a hash slot to a specific node |
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| 348 | 'CLUSTER SLAVES', // List slave nodes of the specified master node |
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| 349 | 'CLUSTER SLOTS', // Get array of Cluster slot to node mappings |
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| 350 | 'COMMAND', // Get array of Redis command details |
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| 351 | 'COMMAND COUNT', // Get total number of Redis commands |
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| 352 | 'COMMAND GETKEYS', // Extract keys given a full Redis command |
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| 353 | 'COMMAND INFO', // Get array of specific Redis command details |
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| 354 | 'CONFIG GET', // Get the value of a configuration parameter |
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| 355 | 'CONFIG REWRITE', // Rewrite the configuration file with the in memory configuration |
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| 356 | 'CONFIG SET', // Set a configuration parameter to the given value |
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| 357 | 'CONFIG RESETSTAT', // Reset the stats returned by INFO |
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| 358 | 'DBSIZE', // Return the number of keys in the selected database |
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| 359 | 'DEBUG OBJECT', // Get debugging information about a key |
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| 360 | 'DEBUG SEGFAULT', // Make the server crash |
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| 361 | 'DECR', // Decrement the integer value of a key by one |
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| 362 | 'DECRBY', // Decrement the integer value of a key by the given number |
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| 363 | 'DEL', // Delete a key |
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| 364 | 'DISCARD', // Discard all commands issued after MULTI |
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| 365 | 'DUMP', // Return a serialized version of the value stored at the specified key. |
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| 366 | 'ECHO', // Echo the given string |
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| 367 | 'EVAL', // Execute a Lua script server side |
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| 368 | 'EVALSHA', // Execute a Lua script server side |
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| 369 | 'EXEC', // Execute all commands issued after MULTI |
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| 370 | 'EXISTS', // Determine if a key exists |
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| 371 | 'EXPIRE', // Set a key's time to live in seconds |
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| 372 | 'EXPIREAT', // Set the expiration for a key as a UNIX timestamp |
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| 373 | 'FLUSHALL', // Remove all keys from all databases |
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| 374 | 'FLUSHDB', // Remove all keys from the current database |
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| 375 | 'GEOADD', // Add one or more geospatial items in the geospatial index represented using a sorted set |
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| 376 | 'GEOHASH', // Returns members of a geospatial index as standard geohash strings |
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| 377 | 'GEOPOS', // Returns longitude and latitude of members of a geospatial index |
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| 378 | 'GEODIST', // Returns the distance between two members of a geospatial index |
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| 379 | 'GEORADIUS', // Query a sorted set representing a geospatial index to fetch members matching a given maximum distance from a point |
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| 380 | 'GEORADIUSBYMEMBER', // Query a sorted set representing a geospatial index to fetch members matching a given maximum distance from a member |
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| 381 | 'GET', // Get the value of a key |
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| 382 | 'GETBIT', // Returns the bit value at offset in the string value stored at key |
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| 383 | 'GETRANGE', // Get a substring of the string stored at a key |
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| 384 | 'GETSET', // Set the string value of a key and return its old value |
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| 385 | 'HDEL', // Delete one or more hash fields |
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| 386 | 'HEXISTS', // Determine if a hash field exists |
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| 387 | 'HGET', // Get the value of a hash field |
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| 388 | 'HGETALL', // Get all the fields and values in a hash |
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| 389 | 'HINCRBY', // Increment the integer value of a hash field by the given number |
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| 390 | 'HINCRBYFLOAT', // Increment the float value of a hash field by the given amount |
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| 391 | 'HKEYS', // Get all the fields in a hash |
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| 392 | 'HLEN', // Get the number of fields in a hash |
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| 393 | 'HMGET', // Get the values of all the given hash fields |
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| 394 | 'HMSET', // Set multiple hash fields to multiple values |
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| 395 | 'HSET', // Set the string value of a hash field |
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| 396 | 'HSETNX', // Set the value of a hash field, only if the field does not exist |
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| 397 | 'HSTRLEN', // Get the length of the value of a hash field |
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| 398 | 'HVALS', // Get all the values in a hash |
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| 399 | 'INCR', // Increment the integer value of a key by one |
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| 400 | 'INCRBY', // Increment the integer value of a key by the given amount |
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| 401 | 'INCRBYFLOAT', // Increment the float value of a key by the given amount |
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| 402 | 'INFO', // Get information and statistics about the server |
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| 403 | 'KEYS', // Find all keys matching the given pattern |
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| 404 | 'LASTSAVE', // Get the UNIX time stamp of the last successful save to disk |
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| 405 | 'LINDEX', // Get an element from a list by its index |
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| 406 | 'LINSERT', // Insert an element before or after another element in a list |
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| 407 | 'LLEN', // Get the length of a list |
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| 408 | 'LPOP', // Remove and get the first element in a list |
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| 409 | 'LPUSH', // Prepend one or multiple values to a list |
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| 410 | 'LPUSHX', // Prepend a value to a list, only if the list exists |
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| 411 | 'LRANGE', // Get a range of elements from a list |
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| 412 | 'LREM', // Remove elements from a list |
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| 413 | 'LSET', // Set the value of an element in a list by its index |
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| 414 | 'LTRIM', // Trim a list to the specified range |
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| 415 | 'MGET', // Get the values of all the given keys |
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| 416 | 'MIGRATE', // Atomically transfer a key from a Redis instance to another one. |
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| 417 | 'MONITOR', // Listen for all requests received by the server in real time |
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| 418 | 'MOVE', // Move a key to another database |
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| 419 | 'MSET', // Set multiple keys to multiple values |
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| 420 | 'MSETNX', // Set multiple keys to multiple values, only if none of the keys exist |
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| 421 | 'MULTI', // Mark the start of a transaction block |
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| 422 | 'OBJECT', // Inspect the internals of Redis objects |
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| 423 | 'PERSIST', // Remove the expiration from a key |
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| 424 | 'PEXPIRE', // Set a key's time to live in milliseconds |
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| 425 | 'PEXPIREAT', // Set the expiration for a key as a UNIX timestamp specified in milliseconds |
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| 426 | 'PFADD', // Adds the specified elements to the specified HyperLogLog. |
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| 427 | 'PFCOUNT', // Return the approximated cardinality of the set(s) observed by the HyperLogLog at key(s). |
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| 428 | 'PFMERGE', // Merge N different HyperLogLogs into a single one. |
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| 429 | 'PING', // Ping the server |
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| 430 | 'PSETEX', // Set the value and expiration in milliseconds of a key |
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| 431 | 'PSUBSCRIBE', // Listen for messages published to channels matching the given patterns |
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| 432 | 'PUBSUB', // Inspect the state of the Pub/Sub subsystem |
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| 433 | 'PTTL', // Get the time to live for a key in milliseconds |
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| 434 | 'PUBLISH', // Post a message to a channel |
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| 435 | 'PUNSUBSCRIBE', // Stop listening for messages posted to channels matching the given patterns |
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| 436 | 'QUIT', // Close the connection |
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| 437 | 'RANDOMKEY', // Return a random key from the keyspace |
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| 438 | 'READONLY', // Enables read queries for a connection to a cluster slave node |
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| 439 | 'READWRITE', // Disables read queries for a connection to a cluster slave node |
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| 440 | 'RENAME', // Rename a key |
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| 441 | 'RENAMENX', // Rename a key, only if the new key does not exist |
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| 442 | 'RESTORE', // Create a key using the provided serialized value, previously obtained using DUMP. |
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| 443 | 'ROLE', // Return the role of the instance in the context of replication |
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| 444 | 'RPOP', // Remove and get the last element in a list |
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| 445 | 'RPOPLPUSH', // Remove the last element in a list, prepend it to another list and return it |
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| 446 | 'RPUSH', // Append one or multiple values to a list |
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| 447 | 'RPUSHX', // Append a value to a list, only if the list exists |
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| 448 | 'SADD', // Add one or more members to a set |
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| 449 | 'SAVE', // Synchronously save the dataset to disk |
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| 450 | 'SCARD', // Get the number of members in a set |
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| 451 | 'SCRIPT DEBUG', // Set the debug mode for executed scripts. |
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| 452 | 'SCRIPT EXISTS', // Check existence of scripts in the script cache. |
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| 453 | 'SCRIPT FLUSH', // Remove all the scripts from the script cache. |
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| 454 | 'SCRIPT KILL', // Kill the script currently in execution. |
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| 455 | 'SCRIPT LOAD', // Load the specified Lua script into the script cache. |
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| 456 | 'SDIFF', // Subtract multiple sets |
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| 457 | 'SDIFFSTORE', // Subtract multiple sets and store the resulting set in a key |
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| 458 | 'SELECT', // Change the selected database for the current connection |
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| 459 | 'SET', // Set the string value of a key |
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| 460 | 'SETBIT', // Sets or clears the bit at offset in the string value stored at key |
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| 461 | 'SETEX', // Set the value and expiration of a key |
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| 462 | 'SETNX', // Set the value of a key, only if the key does not exist |
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| 463 | 'SETRANGE', // Overwrite part of a string at key starting at the specified offset |
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| 464 | 'SHUTDOWN', // Synchronously save the dataset to disk and then shut down the server |
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| 465 | 'SINTER', // Intersect multiple sets |
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| 466 | 'SINTERSTORE', // Intersect multiple sets and store the resulting set in a key |
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| 467 | 'SISMEMBER', // Determine if a given value is a member of a set |
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| 468 | 'SLAVEOF', // Make the server a slave of another instance, or promote it as master |
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| 469 | 'SLOWLOG', // Manages the Redis slow queries log |
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| 470 | 'SMEMBERS', // Get all the members in a set |
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| 471 | 'SMOVE', // Move a member from one set to another |
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| 472 | 'SORT', // Sort the elements in a list, set or sorted set |
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| 473 | 'SPOP', // Remove and return one or multiple random members from a set |
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| 474 | 'SRANDMEMBER', // Get one or multiple random members from a set |
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| 475 | 'SREM', // Remove one or more members from a set |
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| 476 | 'STRLEN', // Get the length of the value stored in a key |
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| 477 | 'SUBSCRIBE', // Listen for messages published to the given channels |
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| 478 | 'SUNION', // Add multiple sets |
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| 479 | 'SUNIONSTORE', // Add multiple sets and store the resulting set in a key |
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| 480 | 'SWAPDB', // Swaps two Redis databases |
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| 481 | 'SYNC', // Internal command used for replication |
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| 482 | 'TIME', // Return the current server time |
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| 483 | 'TOUCH', // Alters the last access time of a key(s). Returns the number of existing keys specified. |
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| 484 | 'TTL', // Get the time to live for a key |
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| 485 | 'TYPE', // Determine the type stored at key |
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| 486 | 'UNSUBSCRIBE', // Stop listening for messages posted to the given channels |
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| 487 | 'UNLINK', // Delete a key asynchronously in another thread. Otherwise it is just as DEL, but non blocking. |
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| 488 | 'UNWATCH', // Forget about all watched keys |
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| 489 | 'WAIT', // Wait for the synchronous replication of all the write commands sent in the context of the current connection |
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| 490 | 'WATCH', // Watch the given keys to determine execution of the MULTI/EXEC block |
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| 491 | 'ZADD', // Add one or more members to a sorted set, or update its score if it already exists |
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| 492 | 'ZCARD', // Get the number of members in a sorted set |
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| 493 | 'ZCOUNT', // Count the members in a sorted set with scores within the given values |
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| 494 | 'ZINCRBY', // Increment the score of a member in a sorted set |
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| 495 | 'ZINTERSTORE', // Intersect multiple sorted sets and store the resulting sorted set in a new key |
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| 496 | 'ZLEXCOUNT', // Count the number of members in a sorted set between a given lexicographical range |
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| 497 | 'ZRANGE', // Return a range of members in a sorted set, by index |
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| 498 | 'ZRANGEBYLEX', // Return a range of members in a sorted set, by lexicographical range |
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| 499 | 'ZREVRANGEBYLEX', // Return a range of members in a sorted set, by lexicographical range, ordered from higher to lower strings. |
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| 500 | 'ZRANGEBYSCORE', // Return a range of members in a sorted set, by score |
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| 501 | 'ZRANK', // Determine the index of a member in a sorted set |
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| 502 | 'ZREM', // Remove one or more members from a sorted set |
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| 503 | 'ZREMRANGEBYLEX', // Remove all members in a sorted set between the given lexicographical range |
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| 504 | 'ZREMRANGEBYRANK', // Remove all members in a sorted set within the given indexes |
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| 505 | 'ZREMRANGEBYSCORE', // Remove all members in a sorted set within the given scores |
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| 506 | 'ZREVRANGE', // Return a range of members in a sorted set, by index, with scores ordered from high to low |
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| 507 | 'ZREVRANGEBYSCORE', // Return a range of members in a sorted set, by score, with scores ordered from high to low |
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| 508 | 'ZREVRANK', // Determine the index of a member in a sorted set, with scores ordered from high to low |
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| 509 | 'ZSCORE', // Get the score associated with the given member in a sorted set |
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| 510 | 'ZUNIONSTORE', // Add multiple sorted sets and store the resulting sorted set in a new key |
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| 511 | 'SCAN', // Incrementally iterate the keys space |
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| 512 | 'SSCAN', // Incrementally iterate Set elements |
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| 513 | 'HSCAN', // Incrementally iterate hash fields and associated values |
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| 514 | 'ZSCAN', // Incrementally iterate sorted sets elements and associated scores |
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| 515 | ]; |
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| 516 | |||
| 517 | /** |
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| 518 | * @var bool|Resource |
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| 519 | */ |
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| 520 | private $_socket = false; |
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| 521 | |||
| 522 | /** |
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| 523 | * Connection constructor. |
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| 524 | * @param array $config |
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| 525 | */ |
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| 526 | public function __construct($config = []) |
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| 534 | } |
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| 535 | |||
| 536 | /** |
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| 537 | * Initializes the object. |
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| 538 | * This method is invoked at the end of the constructor after the object is initialized with the |
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| 539 | * given configuration. |
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| 540 | */ |
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| 541 | public function init() |
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| 542 | { |
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| 543 | } |
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| 544 | |||
| 545 | /** |
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| 546 | * Closes the connection when this component is being serialized. |
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| 547 | * @return array |
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| 548 | * @throws \Exception |
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| 549 | */ |
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| 550 | public function __sleep() |
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| 551 | { |
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| 552 | $this->close(); |
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| 553 | return array_keys(get_object_vars($this)); |
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| 554 | } |
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| 555 | |||
| 556 | /** |
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| 557 | * Returns a value indicating whether the DB connection is established. |
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| 558 | * @return bool whether the DB connection is established |
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| 559 | */ |
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| 560 | public function getIsActive() |
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| 561 | { |
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| 562 | return $this->_socket !== false; |
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| 563 | } |
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| 564 | |||
| 565 | /** |
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| 566 | * Establishes a DB connection. |
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| 567 | * It does nothing if a DB connection has already been established. |
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| 568 | * @throws Exception if connection fails |
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| 569 | * @throws \Exception |
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| 570 | */ |
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| 571 | public function open() |
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| 572 | { |
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| 573 | if ($this->_socket !== false) { |
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| 574 | return; |
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| 575 | } |
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| 576 | $connection = ($this->unixSocket ?: $this->hostname . ':' . $this->port) . ', database=' . $this->database; |
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|
Unused Code
introduced
by
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| 577 | $this->_socket = @stream_socket_client( |
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| 578 | $this->unixSocket ? 'unix://' . $this->unixSocket : 'tcp://' . $this->hostname . ':' . $this->port, |
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| 579 | $errorNumber, |
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| 580 | $errorDescription, |
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| 581 | $this->connectionTimeout ? $this->connectionTimeout : ini_get('default_socket_timeout'), |
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| 582 | $this->socketClientFlags |
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| 583 | ); |
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| 584 | if ($this->_socket) { |
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| 585 | if ($this->dataTimeout !== null) { |
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| 586 | stream_set_timeout($this->_socket, $timeout = (int) $this->dataTimeout, (int) (($this->dataTimeout - $timeout) * 1000000)); |
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| 587 | } |
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| 588 | if ($this->password !== null) { |
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| 589 | $this->executeCommand('AUTH', [$this->password]); |
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| 590 | } |
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| 591 | if ($this->database !== null) { |
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| 592 | $this->executeCommand('SELECT', [$this->database]); |
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| 593 | } |
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| 594 | } else { |
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| 595 | $message = 'Failed to open DB connection.'; |
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| 596 | throw new Exception($message, $errorDescription, $errorNumber); |
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| 597 | } |
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| 598 | } |
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| 599 | |||
| 600 | /** |
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| 601 | * Closes the currently active DB connection. |
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| 602 | * It does nothing if the connection is already closed. |
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| 603 | * @throws \Exception |
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| 604 | */ |
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| 605 | public function close() |
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| 606 | { |
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| 607 | if ($this->_socket !== false) { |
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| 608 | $connection = ($this->unixSocket ?: $this->hostname . ':' . $this->port) . ', database=' . $this->database; |
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| 609 | try { |
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| 610 | $this->executeCommand('QUIT'); |
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| 611 | } catch (SocketException $e) { |
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| 612 | // ignore errors when quitting a closed connection |
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| 613 | } |
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| 614 | fclose($this->_socket); |
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| 615 | $this->_socket = false; |
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| 616 | } |
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| 617 | } |
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| 618 | |||
| 619 | /** |
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| 620 | * Returns the name of the DB driver for the current [[dsn]]. |
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| 621 | * @return string name of the DB driver |
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| 622 | */ |
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| 623 | public function getDriverName() |
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| 624 | { |
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| 625 | return 'redis'; |
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| 626 | } |
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| 627 | |||
| 628 | /** |
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| 629 | * Allows issuing all supported commands via magic methods. |
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| 630 | * |
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| 631 | * ```php |
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| 632 | * $redis->hmset('test_collection', 'key1', 'val1', 'key2', 'val2') |
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| 633 | * OR |
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| 634 | * $redis->hmset(['test_collection', 'key1', 'val1', 'key2', 'val2']) |
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| 635 | * OR |
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| 636 | * $redis->hmset('test_collection', ['key1', 'val1', 'key2', 'val2']) |
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| 637 | * ``` |
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| 638 | * |
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| 639 | * @param string $name name of the missing method to execute |
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| 640 | * @param array $params method call arguments |
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| 641 | * @return mixed |
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| 642 | * @throws Exception |
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| 643 | * @throws \Exception |
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| 644 | */ |
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| 645 | public function __call($name, $params) |
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| 646 | { |
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| 647 | if (false !== strpos($name, '_a')) { |
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| 648 | $name = substr($name, 0, -2); |
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| 649 | $params = $this->normalizeParams($name, $params); |
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| 650 | } |
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| 651 | $redisCommand = strtoupper(Inflector::camel2words($name, false)); |
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| 652 | if (in_array($redisCommand, $this->redisCommands)) { |
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| 653 | return $this->executeCommand($redisCommand, $params); |
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| 654 | } |
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| 655 | |||
| 656 | throw new Exception("method {$name} not found"); |
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| 657 | } |
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| 658 | |||
| 659 | /** |
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| 660 | * 如果参数是二维数组，转化为一维，为了支持函数调用时传数组参数 |
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| 661 | * @param $name |
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| 662 | * @param $params |
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| 663 | * @return array |
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| 664 | */ |
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| 665 | private function normalizeParams($name, $params) |
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| 666 | { |
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| 667 | $arguments = []; |
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| 668 | foreach ($params as $args) { |
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| 669 | if (is_array($args)) { |
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| 670 | foreach ($args as $arg) { |
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| 671 | $arguments[] = $arg; |
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| 672 | } |
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| 673 | } else { |
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| 674 | $arguments[] = $args; |
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| 675 | } |
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| 676 | } |
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| 677 | return $arguments; |
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| 678 | } |
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| 679 | |||
| 680 | /** |
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| 681 | * Executes a redis command. |
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| 682 | * For a list of available commands and their parameters see http://redis.io/commands. |
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| 683 | * |
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| 684 | * The params array should contain the params separated by white space, e.g. to execute |
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| 685 | * `SET mykey somevalue NX` call the following: |
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| 686 | * |
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| 687 | * ```php |
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| 688 | * $redis->executeCommand('SET', ['mykey', 'somevalue', 'NX']); |
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| 689 | * ``` |
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| 690 | * |
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| 691 | * @param string $name the name of the command |
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| 692 | * @param array $params list of parameters for the command |
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| 693 | * @return array|bool|null|string Dependent on the executed command this method |
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| 694 | * will return different data types: |
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| 695 | * |
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| 696 | * - `true` for commands that return "status reply" with the message `'OK'` or `'PONG'`. |
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| 697 | * - `string` for commands that return "status reply" that does not have the message `OK` (since version 2.0.1). |
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| 698 | * - `string` for commands that return "integer reply" |
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| 699 | * as the value is in the range of a signed 64 bit integer. |
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| 700 | * - `string` or `null` for commands that return "bulk reply". |
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| 701 | * - `array` for commands that return "Multi-bulk replies". |
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| 702 | * |
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| 703 | * <number of arguments> CR LF |
||
| 704 | * $<number of bytes of argument 1> CR LF |
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| 705 | * <argument data> CR LF |
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| 706 | * ... |
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| 707 | * $<number of bytes of argument N> CR LF |
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| 708 | * <argument data> CR LF |
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| 709 | * |
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| 710 | * See [redis protocol description](http://redis.io/topics/protocol) |
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| 711 | * for details on the mentioned reply types. |
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| 712 | * @throws Exception for commands that return [error reply](http://redis.io/topics/protocol#error-reply). |
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| 713 | * @throws \Exception |
||
| 714 | */ |
||
| 715 | public function executeCommand($name, $params = []) |
||
| 716 | { |
||
| 717 | $this->open(); |
||
| 718 | |||
| 719 | $params = array_merge(explode(' ', $name), $params); |
||
| 720 | $command = '*' . count($params) . "\r\n"; |
||
| 721 | foreach ($params as $arg) { |
||
| 722 | $command .= '$' . mb_strlen($arg, '8bit') . "\r\n" . $arg . "\r\n"; |
||
| 723 | } |
||
| 724 | |||
| 725 | if ($this->retries > 0) { |
||
| 726 | $tries = $this->retries; |
||
| 727 | while ($tries-- > 0) { |
||
| 728 | try { |
||
| 729 | return $this->sendCommandInternal($command, $params); |
||
| 730 | } catch (SocketException $e) { |
||
| 731 | // backup retries, fail on commands that fail inside here |
||
| 732 | $retries = $this->retries; |
||
| 733 | $this->retries = 0; |
||
| 734 | $this->close(); |
||
| 735 | $this->open(); |
||
| 736 | $this->retries = $retries; |
||
| 737 | } |
||
| 738 | } |
||
| 739 | } |
||
| 740 | return $this->sendCommandInternal($command, $params); |
||
| 741 | } |
||
| 742 | |||
| 743 | /** |
||
| 744 | * Sends RAW command string to the server. |
||
| 745 | * @throws SocketException on connection error. |
||
| 746 | * @throws \Exception |
||
| 747 | */ |
||
| 748 | private function sendCommandInternal($command, $params) |
||
| 749 | { |
||
| 750 | $written = @fwrite($this->_socket, $command); |
||
| 751 | if ($written === false) { |
||
| 752 | throw new SocketException("Failed to write to socket.\nRedis command was: " . $command); |
||
| 753 | } |
||
| 754 | if ($written !== ($len = mb_strlen($command, '8bit'))) { |
||
| 755 | throw new SocketException("Failed to write to socket. $written of $len bytes written.\nRedis command was: " . $command); |
||
| 756 | } |
||
| 757 | return $this->parseResponse(implode(' ', $params)); |
||
| 758 | } |
||
| 759 | |||
| 760 | /** |
||
| 761 | * For Simple Strings the first byte of the reply is "+" "+OK\r\n" |
||
| 762 | * For Errors the first byte of the reply is "-" "-Error message\r\n" |
||
| 763 | * For Integers the first byte of the reply is ":" ":1000\r\n" |
||
| 764 | * For Bulk Strings the first byte of the reply is "$" "$6\r\nfoobar\r\n" "$0\r\n\r\n" "$-1\r\n" |
||
| 765 | * For Arrays the first byte of the reply is "*" "*0\r\n" "*-1\r\n" *3\r\n:1\r\n:2\r\n$6\r\nfoobar\r\n |
||
| 766 | * @param string $command |
||
| 767 | * @return mixed |
||
| 768 | * @throws Exception on error |
||
| 769 | */ |
||
| 770 | private function parseResponse($command) |
||
| 814 | } |
||
| 815 | } |
||
| 816 | } |
||
| 817 |
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