Class: SvelteOnRails::SsrClientControlChannel

Inherits:

Object

• Object
• SvelteOnRails::SsrClientControlChannel

Defined in:

lib/svelte_on_rails/ssr_client.rb

Class Method Summary

• .install_control_listener ⇒ Object

  enable communication by rake task for admin purposes.

• .socket_path ⇒ Object

  Full path of the control socket.

Class Method Details

.install_control_listener ⇒ Object

enable communication by rake task for admin purposes

# File 'lib/svelte_on_rails/ssr_client.rb', line 466

def self.install_control_listener

  path = socket_path.to_s
  FileUtils.mkdir_p(File.dirname(path))
  File.unlink(path) if File.exist?(path)

  server = UNIXServer.new(path)
  File.chmod(0600, path)

  Thread.new do
    loop do
      client = server.accept
      begin
        request = client.gets&.strip.to_sym
        client_instance = SsrClient.instance(caller: 'rake task (manual)')

        response = case request
                   when :status
                     {
                       env: Rails.env,
                       uptime: client_instance.uptime,
                       request: request,
                       socket_path: client_instance.socket_path,
                       initialized_by: client_instance.initialized_by,
                       ping: client_instance.ping?,
                       start_node_server_command: client_instance.start_node_server_command
                     }
                   when :stop
                     begin
                       client_instance.shutdown
                       {
                         success: true
                       }
                     rescue => e
                       {
                         error: "Failed to stop SSR server => #{e}"
                       }
                     end
                   end

        client.puts(response.to_json)
      rescue => e
        SvelteOnRails::Lib::Utils.ssr_server_log(
          "[control] handler error: #{e.class}: #{e.message}",
          ssr_logfile_only: true
        )
      ensure
        client.close rescue nil
      end
    end
  end

  at_exit do
    server.close rescue nil
    File.unlink(path) rescue nil
  end

  SvelteOnRails::Lib::Utils.ssr_server_log(
    "Control listener installed on #{path}",
    ssr_logfile_only: true
  )

end

.socket_path ⇒ Object

Full path of the control socket. Sits next to the SSR socket in tmp/sockets, or in the /tmp/svelte fallback directory when Rails.root pushes total length over 103 chars.

# File 'lib/svelte_on_rails/ssr_client.rb', line 455

def self.socket_path
  primary = Rails.root.join("tmp", "sockets", "svelte-ctl-#{Rails.env}.sock")
  if primary.to_s.length <= 103
    FileUtils.mkdir_p(File.dirname(primary))
    return primary
  end

  Pathname.new("/tmp/svelte-#{Rails.env}-ctl-#{Digest::XXH64.hexdigest(Rails.root.to_s)}.sock")
end