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https://github.com/predis/predis.git
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Daniele Alessandri
511fe0bbab
The reason for this change is to support the upcoming redis-cluster since it has different behaviors compared to the client-side cluster implementation provided by Predis. For example redis-cluster will not support key tags or certain operations currently available with our client-side implementation.
46 lines
1.3 KiB
PHP
46 lines
1.3 KiB
PHP
<?php
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/*
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* This file is part of the Predis package.
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*
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* (c) Daniele Alessandri <suppakilla@gmail.com>
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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 Predis\Command\Hash;
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use Predis\Command\CommandInterface;
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use Predis\Distribution\HashGeneratorInterface;
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/**
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* Interface for classes defining the strategy used to calculate an hash
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* out of keys extracted from supported commands.
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*
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* This is mostly useful to support clustering via client-side sharding.
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*
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* @author Daniele Alessandri <suppakilla@gmail.com>
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*/
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interface CommandHashStrategyInterface
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{
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/**
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* Returns the hash for the given command using the specified algorithm, or null
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* if the command cannot be hashed.
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*
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* @param HashGeneratorInterface $hasher Hash algorithm.
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* @param CommandInterface $command Command to be hashed.
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* @return int
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*/
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public function getHash(HashGeneratorInterface $hasher, CommandInterface $command);
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/**
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* Returns the hash for the given key using the specified algorithm.
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*
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* @param HashGeneratorInterface $hasher Hash algorithm.
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* @param string $key Key to be hashed.
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* @return string
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*/
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public function getKeyHash(HashGeneratorInterface $hasher, $key);
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}
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