I have a module which subscribes to the kernel.request event to set some environment variables for use with LDAP. E.g. setting the LDAP_CACERT environment variable. I’m using it to replace hook_init() as recommended at https://www.drupal.org/node/2013014. However, I’ve noticed that it does not seem to set the environment variables at the start of Drush commands. E.g. I’d want the environment variables set in a PHP console or a cron run. This is part of a re-useable module so just adding it to settings.php is suboptimal.

What’s the best way to execute code before any arbitrary Drush command runs?

I’ve found the console.command event which says:

The COMMAND event allows you to attach listeners before any command is executed by the console. It also allows you to modify the command, input and output before they are handled to the command.

I had hoped that would work with Drush 9. I’ve added it to my subscriber like so:

/**   * {@inheritdoc}   */ public static function getSubscribedEvents() {   $events['kernel.request'] = ['setLdapEnvVariablesWeb'];   $events['console.command'] = ['setLdapEnvVariablesCli'];   return $events; }  public function setLdapEnvVariablesCli(ConsoleCommandEvent $event) {   $this->setLdapEnvVariables(); } 

but unfortunately it never seems to be hit, even though I can see from drupal debug:event console.command that Drupal does recognize I am subscribed to it.

It would be nice if I could handle this in the same subscriber as for web requests but I am not set on it.