Module: Beacon::Integrations::ActionMailer

Defined in:
lib/beacon/integrations/action_mailer.rb

Class Method Summary collapse

Class Method Details

.install(client: Beacon.client, config: Beacon.config) ⇒ Object 



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# File 'lib/beacon/integrations/action_mailer.rb', line 12

def self.install(client: Beacon.client, config: Beacon.config)
  unless defined?(::ActiveSupport::Notifications)
    warn "[beacon] ActionMailer integration requires ActiveSupport — skipping"
    return
  end

  ambient = config.ambient

  ::ActiveSupport::Notifications.subscribe("deliver.action_mailer") do |_name, _start, _finish, _id, payload|
    begin
      # Ambient: emit a mailer_delivery event for every delivery attempt.
      if ambient
        mailer = payload[:mailer] || "UnknownMailer"
        action = payload[:action] || "unknown"
        status = payload[:exception_object].nil? ? "success" : "failure"
        client.push({
          kind:          :ambient,
          name:          "mailer_delivery",
          created_at_ns: Process.clock_gettime(Process::CLOCK_REALTIME, :nanosecond),
          properties: {
            mailer: mailer,
            action: action,
            status: status,
          },
        })
      end

      # Error capture: only on failure.
      exception = payload[:exception_object]
      next unless exception

      frame       = (exception.backtrace || []).first.to_s
      fingerprint = Beacon::Fingerprint.compute(exception.class.name, frame)
      client.push({
        kind:          :error,
        name:          exception.class.name,
        created_at_ns: Process.clock_gettime(Process::CLOCK_REALTIME, :nanosecond),
        properties: {
          fingerprint:     fingerprint,
          message:         exception.message.to_s[0, 500],
          first_app_frame: frame,
          stack_trace:     exception.backtrace&.join("\n"),
        },
      })
    rescue => e
      warn "[beacon] action_mailer subscriber rescued #{e.class}: #{e.message}"
    end
  end
end