Merge pull request #256 from City-of-Helsinki/develop

added redis related settings

public/sites/default/settings.php

@@ -97,6 +97,44 @@
   }
 }
 
+if (
+  ($redis_host = getenv('REDIS_HOST')) &&
+  file_exists('modules/contrib/redis/redis.services.yml') &&
+  extension_loaded('redis')
+) {
+  // Redis namespace is not available until redis module is enabled, so
+  // we have to manually register it in order to enable the module and have
+  // this configuration when the module is installed, but not yet enabled.
+  $class_loader->addPsr4('Drupal\\redis\\', 'modules/contrib/redis/src');
+  $redis_port = getenv('REDIS_PORT') ?: 6379;
+
+  if ($redis_prefix = getenv('REDIS_PREFIX')) {
+    $settings['cache_prefix']['default'] = $redis_prefix;
+  }
+
+  if ($redis_password = getenv('REDIS_PASSWORD')) {
+    $settings['redis.connection']['password'] = $redis_password;
+  }
+  $settings['redis.connection']['interface'] = 'PhpRedis';
+  $settings['redis.connection']['port'] = $redis_port;
+
+  // REDIS_INSTANCE environment variable is used to support Redis sentinel.
+  // REDIS_HOST value should contain host and port, like 'sentinel-external:5000'
+  // when using Sentinel.
+  if ($redis_instance = getenv('REDIS_INSTANCE')) {
+    $settings['redis.connection']['instance'] = $redis_instance;
+    // Sentinel expects redis host to be an array.
+    $redis_host = explode(',', $redis_host);
+  }
+  $settings['redis.connection']['host'] = $redis_host;
+
+  $settings['cache']['default'] = 'cache.backend.redis';
+  $settings['container_yamls'][] = 'modules/contrib/redis/example.services.yml';
+  // Register redis services to make sure we don't get a non-existent service
+  // error while trying to enable the module.
+  $settings['container_yamls'][] = 'modules/contrib/redis/redis.services.yml';
+}
+
 if ($env = getenv('APP_ENV')) {
   $settings['ASU_ELASTICSEARCH_ADDRESS'] = getenv('ASU_ELASTICSEARCH_ADDRESS')  ?? 'http://elastic:9200';