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<?php /** * Copyright © 2019-2024 Rhubarb Tech Inc. All Rights Reserved. * * The Object Cache Pro Software and its related materials are property and confidential * information of Rhubarb Tech Inc. Any reproduction, use, distribution, or exploitation * of the Object Cache Pro Software and its related materials, in whole or in part, * is strictly forbidden unless prior permission is obtained from Rhubarb Tech Inc. * * In addition, any reproduction, use, distribution, or exploitation of the Object Cache Pro * Software and its related materials, in whole or in part, is subject to the End-User License * Agreement accessible in the included `LICENSE` file, or at: https://objectcache.pro/eula */ declare(strict_types=1); namespace RedisCachePro\Connections; use Throwable; use Relay\Sentinel; use RedisCachePro\Clients\RelaySentinel; use RedisCachePro\Connectors\RelayConnector; use RedisCachePro\Configuration\Configuration; use RedisCachePro\Exceptions\ConnectionException; class RelaySentinelsConnection extends RelayReplicatedConnection implements ConnectionInterface { use Concerns\SentinelsConnection; /** * The current Sentinel node. * * @var string */ protected $sentinel; /** * Holds all Sentinel states and URLs. * * If the state is `null` no connection has been established. * If the state is `false` the connection failed or a timeout occurred. * If the state is a `RedisSentinel` object it's the current Sentinel node. * * @var array<mixed> */ protected $sentinels; /** * Create a new PhpRedis Sentinel connection. * * @param \RedisCachePro\Configuration\Configuration $config */ public function __construct(Configuration $config) { $this->config = $config; foreach ($config->sentinels as $sentinel) { $this->sentinels[$sentinel] = null; } $this->connectToSentinels(); } /** * Establish a connection to the given Redis Sentinel and its primary and replicas. * * @param string $url * @return void */ protected function establishConnections(string $url) { $config = clone $this->config; $config->setUrl($url); $persistentId = ''; $arguments = [ $config->host, $config->port, $config->timeout, $persistentId, $config->retry_interval, $config->read_timeout, ]; if ($config->password) { $arguments[] = $config->username ? [$config->username, $config->password] : $config->password; } $this->sentinels[$url] = new RelaySentinel(function () use ($arguments) { return new Sentinel(...$arguments); }, $config->tracer); $this->discoverPrimary(); $this->discoverReplicas(); } /** * Discovers and connects to the Sentinel primary. * * @return void */ protected function discoverPrimary() { $primary = $this->sentinel()->getMasterAddrByName($this->config->service); if (! $primary) { throw new ConnectionException("Failed to retrieve sentinel primary of `{$this->sentinel}`"); } $config = clone $this->config; $config->setHost($primary[0]); $config->setPort($primary[1]); $connection = RelayConnector::connectToInstance($config); /** @var array<int, mixed> $role */ $role = $connection->role(); if (($role[0] ?? null) !== 'master') { throw new ConnectionException("Sentinel primary of `{$this->sentinel}` is not a primary"); } $this->primary = $connection; $this->client = $connection->client(); } /** * Discovers and connects to the Sentinel replicas. * * @return void */ protected function discoverReplicas() { $replicas = $this->sentinel()->slaves($this->config->service); if (! $replicas) { throw new ConnectionException("Failed to discover Sentinel replicas of `{$this->sentinel}`"); } $this->replicas = []; foreach ($replicas as $replica) { if (($replica['role-reported'] ?? '') !== 'slave') { continue; } $config = clone $this->config; $config->setHost($replica['ip']); $config->setPort($replica['port']); try { $this->replicas[$replica['name']] = RelayConnector::connectToInstance($config); } catch (Throwable $error) { if ($this->config->debug) { error_log("objectcache.notice: {$error->getMessage()}"); } } } } /** * Returns the current Sentinel connection. * * @return \RedisCachePro\Clients\RelaySentinel */ public function sentinel() { return $this->sentinels[$this->sentinel]; } }