Add `tootctl cache clear` (#10689)

lib/cli.rb

@@ -9,6 +9,7 @@ require_relative 'mastodon/search_cli'
 require_relative 'mastodon/settings_cli'
 require_relative 'mastodon/statuses_cli'
 require_relative 'mastodon/domains_cli'
+require_relative 'mastodon/cache_cli'
 require_relative 'mastodon/version'
 
 module Mastodon
@@ -41,6 +42,9 @@ module Mastodon
     desc 'domains SUBCOMMAND ...ARGS', 'Manage account domains'
     subcommand 'domains', Mastodon::DomainsCLI
 
+    desc 'cache SUBCOMMAND ...ARGS', 'Manage cache'
+    subcommand 'cache', Mastodon::CacheCLI
+
     option :dry_run, type: :boolean
     desc 'self-destruct', 'Erase the server from the federation'
     long_desc <<~LONG_DESC

lib/mastodon/cache_cli.rb

+# frozen_string_literal: true
+
+require_relative '../../config/boot'
+require_relative '../../config/environment'
+require_relative 'cli_helper'
+
+module Mastodon
+  class CacheCLI < Thor
+    def self.exit_on_failure?
+      true
+    end
+
+    desc 'clear', 'Clear out the cache storage'
+    def clear
+      Rails.cache.clear
+      say('OK', :green)
+    end
+  end
+end