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<?php
/*
* This file is part of the Predis package.
*
* (c) 2009-2020 Daniele Alessandri
* (c) 2021-2023 Till Krüss
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Predis\Command\Processor;
use InvalidArgumentException;
use Predis\Command\CommandInterface;
use Predis\Command\PrefixableCommandInterface;
/**
* Command processor capable of prefixing keys stored in the arguments of Redis
* commands supported.
*/
class KeyPrefixProcessor implements ProcessorInterface
{
private $prefix;
private $commands;
/**
* @param string $prefix Prefix for the keys.
*/
public function __construct($prefix)
{
$this->prefix = $prefix;
$prefixFirst = static::class . '::first';
$prefixAll = static::class . '::all';
$prefixInterleaved = static::class . '::interleaved';
$prefixSkipFirst = static::class . '::skipFirst';
$prefixSkipLast = static::class . '::skipLast';
$prefixSort = static::class . '::sort';
$prefixEvalKeys = static::class . '::evalKeys';
$prefixZsetStore = static::class . '::zsetStore';
$prefixMigrate = static::class . '::migrate';
$prefixGeoradius = static::class . '::georadius';
$this->commands = [
/* ---------------- Redis 1.2 ---------------- */
'EXISTS' => $prefixAll,
'DEL' => $prefixAll,
'TYPE' => $prefixFirst,
'KEYS' => $prefixFirst,
'RENAME' => $prefixAll,
'RENAMENX' => $prefixAll,
'EXPIRE' => $prefixFirst,
'EXPIREAT' => $prefixFirst,
'TTL' => $prefixFirst,
'MOVE' => $prefixFirst,
'SORT' => $prefixSort,
'DUMP' => $prefixFirst,
'RESTORE' => $prefixFirst,
'SET' => $prefixFirst,
'SETNX' => $prefixFirst,
'MSET' => $prefixInterleaved,
'MSETNX' => $prefixInterleaved,
'GET' => $prefixFirst,
'MGET' => $prefixAll,
'GETSET' => $prefixFirst,
'INCR' => $prefixFirst,
'INCRBY' => $prefixFirst,
'DECR' => $prefixFirst,
'DECRBY' => $prefixFirst,
'RPUSH' => $prefixFirst,
'LPUSH' => $prefixFirst,
'LLEN' => $prefixFirst,
'LRANGE' => $prefixFirst,
'LTRIM' => $prefixFirst,
'LINDEX' => $prefixFirst,
'LSET' => $prefixFirst,
'LREM' => $prefixFirst,
'LPOP' => $prefixFirst,
'RPOP' => $prefixFirst,
'RPOPLPUSH' => $prefixAll,
'SADD' => $prefixFirst,
'SREM' => $prefixFirst,
'SPOP' => $prefixFirst,
'SMOVE' => $prefixSkipLast,
'SCARD' => $prefixFirst,
'SISMEMBER' => $prefixFirst,
'SINTER' => $prefixAll,
'SINTERSTORE' => $prefixAll,
'SUNION' => $prefixAll,
'SUNIONSTORE' => $prefixAll,
'SDIFF' => $prefixAll,
'SDIFFSTORE' => $prefixAll,
'SMEMBERS' => $prefixFirst,
'SRANDMEMBER' => $prefixFirst,
'ZADD' => $prefixFirst,
'ZINCRBY' => $prefixFirst,
'ZREM' => $prefixFirst,
'ZRANGE' => $prefixFirst,
'ZREVRANGE' => $prefixFirst,
'ZRANGEBYSCORE' => $prefixFirst,
'ZCARD' => $prefixFirst,
'ZSCORE' => $prefixFirst,
'ZREMRANGEBYSCORE' => $prefixFirst,
/* ---------------- Redis 2.0 ---------------- */
'SETEX' => $prefixFirst,
'APPEND' => $prefixFirst,
'SUBSTR' => $prefixFirst,
'BLPOP' => $prefixSkipLast,
'BRPOP' => $prefixSkipLast,
'ZUNIONSTORE' => $prefixZsetStore,
'ZINTERSTORE' => $prefixZsetStore,
'ZCOUNT' => $prefixFirst,
'ZRANK' => $prefixFirst,
'ZREVRANK' => $prefixFirst,
'ZREMRANGEBYRANK' => $prefixFirst,
'HSET' => $prefixFirst,
'HSETNX' => $prefixFirst,
'HMSET' => $prefixFirst,
'HINCRBY' => $prefixFirst,
'HGET' => $prefixFirst,
'HMGET' => $prefixFirst,
'HDEL' => $prefixFirst,
'HEXISTS' => $prefixFirst,
'HLEN' => $prefixFirst,
'HKEYS' => $prefixFirst,
'HVALS' => $prefixFirst,
'HGETALL' => $prefixFirst,
'SUBSCRIBE' => $prefixAll,
'UNSUBSCRIBE' => $prefixAll,
'PSUBSCRIBE' => $prefixAll,
'PUNSUBSCRIBE' => $prefixAll,
'PUBLISH' => $prefixFirst,
/* ---------------- Redis 2.2 ---------------- */
'PERSIST' => $prefixFirst,
'STRLEN' => $prefixFirst,
'SETRANGE' => $prefixFirst,
'GETRANGE' => $prefixFirst,
'SETBIT' => $prefixFirst,
'GETBIT' => $prefixFirst,
'RPUSHX' => $prefixFirst,
'LPUSHX' => $prefixFirst,
'LINSERT' => $prefixFirst,
'BRPOPLPUSH' => $prefixSkipLast,
'ZREVRANGEBYSCORE' => $prefixFirst,
'WATCH' => $prefixAll,
/* ---------------- Redis 2.6 ---------------- */
'PTTL' => $prefixFirst,
'PEXPIRE' => $prefixFirst,
'PEXPIREAT' => $prefixFirst,
'PSETEX' => $prefixFirst,
'INCRBYFLOAT' => $prefixFirst,
'BITOP' => $prefixSkipFirst,
'BITCOUNT' => $prefixFirst,
'HINCRBYFLOAT' => $prefixFirst,
'EVAL' => $prefixEvalKeys,
'EVALSHA' => $prefixEvalKeys,
'MIGRATE' => $prefixMigrate,
/* ---------------- Redis 2.8 ---------------- */
'SSCAN' => $prefixFirst,
'ZSCAN' => $prefixFirst,
'HSCAN' => $prefixFirst,
'PFADD' => $prefixFirst,
'PFCOUNT' => $prefixAll,
'PFMERGE' => $prefixAll,
'ZLEXCOUNT' => $prefixFirst,
'ZRANGEBYLEX' => $prefixFirst,
'ZREMRANGEBYLEX' => $prefixFirst,
'ZREVRANGEBYLEX' => $prefixFirst,
'BITPOS' => $prefixFirst,
/* ---------------- Redis 3.2 ---------------- */
'HSTRLEN' => $prefixFirst,
'BITFIELD' => $prefixFirst,
'GEOADD' => $prefixFirst,
'GEOHASH' => $prefixFirst,
'GEOPOS' => $prefixFirst,
'GEODIST' => $prefixFirst,
'GEORADIUS' => $prefixGeoradius,
'GEORADIUSBYMEMBER' => $prefixGeoradius,
/* ---------------- Redis 5.0 ---------------- */
'XADD' => $prefixFirst,
'XRANGE' => $prefixFirst,
'XREVRANGE' => $prefixFirst,
'XDEL' => $prefixFirst,
'XLEN' => $prefixFirst,
'XACK' => $prefixFirst,
'XTRIM' => $prefixFirst,
/* ---------------- Redis 6.2 ---------------- */
'GETDEL' => $prefixFirst,
/* ---------------- Redis 7.0 ---------------- */
'EXPIRETIME' => $prefixFirst,
/* RedisJSON */
'JSON.ARRAPPEND' => $prefixFirst,
'JSON.ARRINDEX' => $prefixFirst,
'JSON.ARRINSERT' => $prefixFirst,
'JSON.ARRLEN' => $prefixFirst,
'JSON.ARRPOP' => $prefixFirst,
'JSON.ARRTRIM' => $prefixFirst,
'JSON.CLEAR' => $prefixFirst,
'JSON.DEBUG MEMORY' => $prefixFirst,
'JSON.DEL' => $prefixFirst,
'JSON.FORGET' => $prefixFirst,
'JSON.GET' => $prefixFirst,
'JSON.MGET' => $prefixAll,
'JSON.NUMINCRBY' => $prefixFirst,
'JSON.OBJKEYS' => $prefixFirst,
'JSON.OBJLEN' => $prefixFirst,
'JSON.RESP' => $prefixFirst,
'JSON.SET' => $prefixFirst,
'JSON.STRAPPEND' => $prefixFirst,
'JSON.STRLEN' => $prefixFirst,
'JSON.TOGGLE' => $prefixFirst,
'JSON.TYPE' => $prefixFirst,
/* RedisBloom */
'BF.ADD' => $prefixFirst,
'BF.EXISTS' => $prefixFirst,
'BF.INFO' => $prefixFirst,
'BF.INSERT' => $prefixFirst,
'BF.LOADCHUNK' => $prefixFirst,
'BF.MADD' => $prefixFirst,
'BF.MEXISTS' => $prefixFirst,
'BF.RESERVE' => $prefixFirst,
'BF.SCANDUMP' => $prefixFirst,
'CF.ADD' => $prefixFirst,
'CF.ADDNX' => $prefixFirst,
'CF.COUNT' => $prefixFirst,
'CF.DEL' => $prefixFirst,
'CF.EXISTS' => $prefixFirst,
'CF.INFO' => $prefixFirst,
'CF.INSERT' => $prefixFirst,
'CF.INSERTNX' => $prefixFirst,
'CF.LOADCHUNK' => $prefixFirst,
'CF.MEXISTS' => $prefixFirst,
'CF.RESERVE' => $prefixFirst,
'CF.SCANDUMP' => $prefixFirst,
'CMS.INCRBY' => $prefixFirst,
'CMS.INFO' => $prefixFirst,
'CMS.INITBYDIM' => $prefixFirst,
'CMS.INITBYPROB' => $prefixFirst,
'CMS.QUERY' => $prefixFirst,
'TDIGEST.ADD' => $prefixFirst,
'TDIGEST.BYRANK' => $prefixFirst,
'TDIGEST.BYREVRANK' => $prefixFirst,
'TDIGEST.CDF' => $prefixFirst,
'TDIGEST.CREATE' => $prefixFirst,
'TDIGEST.INFO' => $prefixFirst,
'TDIGEST.MAX' => $prefixFirst,
'TDIGEST.MIN' => $prefixFirst,
'TDIGEST.QUANTILE' => $prefixFirst,
'TDIGEST.RANK' => $prefixFirst,
'TDIGEST.RESET' => $prefixFirst,
'TDIGEST.REVRANK' => $prefixFirst,
'TDIGEST.TRIMMED_MEAN' => $prefixFirst,
'TOPK.ADD' => $prefixFirst,
'TOPK.INCRBY' => $prefixFirst,
'TOPK.INFO' => $prefixFirst,
'TOPK.LIST' => $prefixFirst,
'TOPK.QUERY' => $prefixFirst,
'TOPK.RESERVE' => $prefixFirst,
/* RediSearch */
'FT.AGGREGATE' => $prefixFirst,
'FT.ALTER' => $prefixFirst,
'FT.CREATE' => $prefixFirst,
'FT.CURSOR DEL' => $prefixFirst,
'FT.CURSOR READ' => $prefixFirst,
'FT.DROPINDEX' => $prefixFirst,
'FT.EXPLAIN' => $prefixFirst,
'FT.INFO' => $prefixFirst,
'FT.PROFILE' => $prefixFirst,
'FT.SEARCH' => $prefixFirst,
'FT.SPELLCHECK' => $prefixFirst,
'FT.SYNDUMP' => $prefixFirst,
'FT.SYNUPDATE' => $prefixFirst,
'FT.TAGVALS' => $prefixFirst,
/* Redis TimeSeries */
'TS.ADD' => $prefixFirst,
'TS.ALTER' => $prefixFirst,
'TS.CREATE' => $prefixFirst,
'TS.DECRBY' => $prefixFirst,
'TS.DEL' => $prefixFirst,
'TS.GET' => $prefixFirst,
'TS.INCRBY' => $prefixFirst,
'TS.INFO' => $prefixFirst,
'TS.MGET' => $prefixFirst,
'TS.MRANGE' => $prefixFirst,
'TS.MREVRANGE' => $prefixFirst,
'TS.QUERYINDEX' => $prefixFirst,
'TS.RANGE' => $prefixFirst,
'TS.REVRANGE' => $prefixFirst,
];
}
/**
* Sets a prefix that is applied to all the keys.
*
* @param string $prefix Prefix for the keys.
*/
public function setPrefix($prefix)
{
$this->prefix = $prefix;
}
/**
* Gets the current prefix.
*
* @return string
*/
public function getPrefix()
{
return $this->prefix;
}
/**
* {@inheritdoc}
*/
public function process(CommandInterface $command)
{
if ($command instanceof PrefixableCommandInterface) {
$command->prefixKeys($this->prefix);
} elseif (isset($this->commands[$commandID = strtoupper($command->getId())])) {
$this->commands[$commandID]($command, $this->prefix);
}
}
/**
* Sets an handler for the specified command ID.
*
* The callback signature must have 2 parameters of the following types:
*
* - Predis\Command\CommandInterface (command instance)
* - String (prefix)
*
* When the callback argument is omitted or NULL, the previously
* associated handler for the specified command ID is removed.
*
* @param string $commandID The ID of the command to be handled.
* @param mixed $callback A valid callable object or NULL.
*
* @throws InvalidArgumentException
*/
public function setCommandHandler($commandID, $callback = null)
{
$commandID = strtoupper($commandID);
if (!isset($callback)) {
unset($this->commands[$commandID]);
return;
}
if (!is_callable($callback)) {
throw new InvalidArgumentException(
'Callback must be a valid callable object or NULL'
);
}
$this->commands[$commandID] = $callback;
}
/**
* {@inheritdoc}
*/
public function __toString()
{
return $this->getPrefix();
}
/**
* Applies the specified prefix only the first argument.
*
* @param CommandInterface $command Command instance.
* @param string $prefix Prefix string.
*/
public static function first(CommandInterface $command, $prefix)
{
if ($arguments = $command->getArguments()) {
$arguments[0] = "$prefix{$arguments[0]}";
$command->setRawArguments($arguments);
}
}
/**
* Applies the specified prefix to all the arguments.
*
* @param CommandInterface $command Command instance.
* @param string $prefix Prefix string.
*/
public static function all(CommandInterface $command, $prefix)
{
if ($arguments = $command->getArguments()) {
foreach ($arguments as &$key) {
$key = "$prefix$key";
}
$command->setRawArguments($arguments);
}
}
/**
* Applies the specified prefix only to even arguments in the list.
*
* @param CommandInterface $command Command instance.
* @param string $prefix Prefix string.
*/
public static function interleaved(CommandInterface $command, $prefix)
{
if ($arguments = $command->getArguments()) {
$length = count($arguments);
for ($i = 0; $i < $length; $i += 2) {
$arguments[$i] = "$prefix{$arguments[$i]}";
}
$command->setRawArguments($arguments);
}
}
/**
* Applies the specified prefix to all the arguments but the first one.
*
* @param CommandInterface $command Command instance.
* @param string $prefix Prefix string.
*/
public static function skipFirst(CommandInterface $command, $prefix)
{
if ($arguments = $command->getArguments()) {
$length = count($arguments);
for ($i = 1; $i < $length; ++$i) {
$arguments[$i] = "$prefix{$arguments[$i]}";
}
$command->setRawArguments($arguments);
}
}
/**
* Applies the specified prefix to all the arguments but the last one.
*
* @param CommandInterface $command Command instance.
* @param string $prefix Prefix string.
*/
public static function skipLast(CommandInterface $command, $prefix)
{
if ($arguments = $command->getArguments()) {
$length = count($arguments);
for ($i = 0; $i < $length - 1; ++$i) {
$arguments[$i] = "$prefix{$arguments[$i]}";
}
$command->setRawArguments($arguments);
}
}
/**
* Applies the specified prefix to the keys of a SORT command.
*
* @param CommandInterface $command Command instance.
* @param string $prefix Prefix string.
*/
public static function sort(CommandInterface $command, $prefix)
{
if ($arguments = $command->getArguments()) {
$arguments[0] = "$prefix{$arguments[0]}";
if (($count = count($arguments)) > 1) {
for ($i = 1; $i < $count; ++$i) {
switch (strtoupper($arguments[$i])) {
case 'BY':
case 'STORE':
$arguments[$i] = "$prefix{$arguments[++$i]}";
break;
case 'GET':
$value = $arguments[++$i];
if ($value !== '#') {
$arguments[$i] = "$prefix$value";
}
break;
case 'LIMIT':
$i += 2;
break;
}
}
}
$command->setRawArguments($arguments);
}
}
/**
* Applies the specified prefix to the keys of an EVAL-based command.
*
* @param CommandInterface $command Command instance.
* @param string $prefix Prefix string.
*/
public static function evalKeys(CommandInterface $command, $prefix)
{
if ($arguments = $command->getArguments()) {
for ($i = 2; $i < $arguments[1] + 2; ++$i) {
$arguments[$i] = "$prefix{$arguments[$i]}";
}
$command->setRawArguments($arguments);
}
}
/**
* Applies the specified prefix to the keys of Z[INTERSECTION|UNION]STORE.
*
* @param CommandInterface $command Command instance.
* @param string $prefix Prefix string.
*/
public static function zsetStore(CommandInterface $command, $prefix)
{
if ($arguments = $command->getArguments()) {
$arguments[0] = "$prefix{$arguments[0]}";
$length = ((int) $arguments[1]) + 2;
for ($i = 2; $i < $length; ++$i) {
$arguments[$i] = "$prefix{$arguments[$i]}";
}
$command->setRawArguments($arguments);
}
}
/**
* Applies the specified prefix to the key of a MIGRATE command.
*
* @param CommandInterface $command Command instance.
* @param string $prefix Prefix string.
*/
public static function migrate(CommandInterface $command, $prefix)
{
if ($arguments = $command->getArguments()) {
$arguments[2] = "$prefix{$arguments[2]}";
$command->setRawArguments($arguments);
}
}
/**
* Applies the specified prefix to the key of a GEORADIUS command.
*
* @param CommandInterface $command Command instance.
* @param string $prefix Prefix string.
*/
public static function georadius(CommandInterface $command, $prefix)
{
if ($arguments = $command->getArguments()) {
$arguments[0] = "$prefix{$arguments[0]}";
$startIndex = $command->getId() === 'GEORADIUS' ? 5 : 4;
if (($count = count($arguments)) > $startIndex) {
for ($i = $startIndex; $i < $count; ++$i) {
switch (strtoupper($arguments[$i])) {
case 'STORE':
case 'STOREDIST':
$arguments[$i] = "$prefix{$arguments[++$i]}";
break;
}
}
}
$command->setRawArguments($arguments);
}
}
}