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<?php |
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namespace Monospice\LaravelRedisSentinel\Configuration; |
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use Illuminate\Support\Arr; |
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use Illuminate\Support\Str; |
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/** |
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* Normalizes host definitions in the package's Redis Sentinel connection |
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* configuration by splitting host definitions that contain multiple hosts |
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* into individual host definitions to support environment-based configuration. |
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* |
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* The package allows developers to specify multiple hosts in a single Redis |
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* Sentinel "*_HOST" environment variable to provide a way for developers to |
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* configure multiple hosts for a connection through the environment without |
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* the need to modify the package's default configuration. An environment |
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* variable can contain a comma-seperated string of hosts that the package will |
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* split automatically using this class: |
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* |
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* REDIS_HOST=sentinel1.example.com,sentinel2.example.com |
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* |
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* Before parsing the connection configuration, the connection config would |
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* contain the following value if using the environment variable above: |
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* |
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* 'connection' => [ |
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* [ |
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* 'host' => 'sentinel1.example.com,sentinel2.example.com', |
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* 'port' => 26379, |
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* ] |
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* ] |
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* |
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* This class will convert the connection configuration to: |
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* |
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* 'connection' => [ |
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* [ |
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* 'host' => 'sentinel1.example.com', |
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* 'port' => 26379, |
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* ], |
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* [ |
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* 'host' => 'sentinel2.example.com', |
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* 'port' => 26379, |
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* ] |
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* ] |
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* |
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* @category Package |
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* @package Monospice\LaravelRedisSentinel |
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* @author Cy Rossignol <[email protected]> |
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* @license See LICENSE file |
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* @link https://github.com/monospice/laravel-redis-sentinel-drivers |
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*/ |
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class HostNormalizer |
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{ |
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/** |
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* Create single host entries for any host definitions that specify |
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* multiple hosts in the provided set of connection configurations. |
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* |
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* @param array $connections The set of connection configs containing host |
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* definitions to normalize |
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* |
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* @return array The normalized Redis Sentinel connection configuration |
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*/ |
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public static function normalizeConnections(array $connections) |
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{ |
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foreach ($connections as $name => $connection) { |
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if ($name === 'options' || $name === 'clusters') { |
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continue; |
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} |
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$connections[$name] = static::normalizeConnection($connection); |
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} |
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return $connections; |
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} |
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/** |
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* Create single host entries for any host definitions that specify |
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* multiple hosts in the provided connection configuration. |
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* |
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* @param array $connection The connection config which contains the host |
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* definitions for a single Redis Sentinel connection |
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* |
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* @return array The normalized connection configuration values |
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*/ |
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public static function normalizeConnection(array $connection) |
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{ |
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$normal = [ ]; |
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if (array_key_exists('options', $connection)) { |
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$normal['options'] = $connection['options']; |
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unset($connection['options']); |
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} |
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foreach ($connection as $host) { |
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$normal = array_merge($normal, static::normalizeHost($host)); |
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} |
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return $normal; |
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} |
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/** |
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* Parse the provided host definition into multiple host definitions if it |
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* specifies more than one host. |
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* |
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* @param array|string $host The host definition from a Redis Sentinel |
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* connection |
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* |
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* @return array One or more host definitions parsed from the provided |
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* host definition |
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*/ |
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public static function normalizeHost($host) |
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{ |
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if (is_array($host)) { |
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return static::normalizeHostArray($host); |
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} |
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if (is_string($host)) { |
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return static::normalizeHostString($host); |
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} |
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return [ $host ]; |
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} |
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/** |
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* Parse a host definition in the form of an array into multiple host |
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* definitions if it specifies more than one host. |
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* |
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* @param array $hostArray The host definition from a Redis Sentinel |
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* connection |
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* |
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* @return array One or more host definitions parsed from the provided |
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* host definition |
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*/ |
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protected static function normalizeHostArray(array $hostArray) |
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{ |
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if (! array_key_exists('host', $hostArray)) { |
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return [ $hostArray ]; |
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} |
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$port = Arr::get($hostArray, 'port', 26379); |
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return static::normalizeHostString($hostArray['host'], $port); |
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} |
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/** |
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* Parse a host definition in the form of a string into multiple host |
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* definitions it it specifies more than one host. |
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* |
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* @param string $hostString The host definition from a Redis Sentinel |
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* connection |
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* @param int $port The port number to use for the resulting host |
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* definitions if the parsed host definition doesn't contain port numbers |
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* |
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* @return array One or more host definitions parsed from the provided |
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* host definition |
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*/ |
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protected static function normalizeHostString($hostString, $port = 26379) |
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{ |
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$hosts = [ ]; |
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foreach (explode(',', $hostString) as $host) { |
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$host = trim($host); |
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if (Str::contains($host, ':')) { |
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$hosts[] = $host; |
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} else { |
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$hosts[] = [ 'host' => $host, 'port' => $port ]; |
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} |
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} |
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return $hosts; |
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} |
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} |
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