Telemetry

LiveView currently exposes the following telemetry events:

  • [:phoenix, :live_view, :mount, :start] - Dispatched by a Phoenix.LiveView immediately before mount/3 is invoked.

    • Measurement:
      %{system_time: System.monotonic_time}
    • Metadata:
      %{
        socket: Phoenix.LiveView.Socket.t,
        params: unsigned_params | :not_mounted_at_router,
        session: map
      }
  • [:phoenix, :live_view, :mount, :stop] - Dispatched by a Phoenix.LiveView when the mount/3 callback completes successfully.

    • Measurement:
      %{duration: native_time}
    • Metadata:
      %{
        socket: Phoenix.LiveView.Socket.t,
        params: unsigned_params | :not_mounted_at_router,
        session: map
      }
  • [:phoenix, :live_view, :mount, :exception] - Dispatched by a Phoenix.LiveView when an exception is raised in the mount/3 callback.

    • Measurement: %{duration: native_time}
    • Metadata:
      %{
        socket: Phoenix.LiveView.Socket.t,
        kind: atom,
        reason: term,
        params: unsigned_params | :not_mounted_at_router,
        session: map
      }
  • [:phoenix, :live_view, :handle_params, :start] - Dispatched by a Phoenix.LiveView immediately before handle_params/3 is invoked.

    • Measurement:
      %{system_time: System.monotonic_time}
    • Metadata:
      %{
        socket: Phoenix.LiveView.Socket.t,
        params: unsigned_params,
        uri: String.t()
      }
  • [:phoenix, :live_view, :handle_params, :stop] - Dispatched by a Phoenix.LiveView when the handle_params/3 callback completes successfully.

    • Measurement:
      %{duration: native_time}
    • Metadata:
      %{
        socket: Phoenix.LiveView.Socket.t,
        params: unsigned_params,
        uri: String.t()
      }
  • [:phoenix, :live_view, :handle_params, :exception] - Dispatched by a Phoenix.LiveView when the when an exception is raised in the handle_params/3 callback.

    • Measurement:
      %{duration: native_time}
    • Metadata:
      %{
        socket: Phoenix.LiveView.Socket.t,
        kind: atom,
        reason: term,
        params: unsigned_params,
        uri: String.t()
      }
  • [:phoenix, :live_view, :handle_event, :start] - Dispatched by a Phoenix.LiveView immediately before handle_event/3 is invoked.

    • Measurement:
      %{system_time: System.monotonic_time}
    • Metadata:
      %{
        socket: Phoenix.LiveView.Socket.t,
        event: String.t(),
        params: unsigned_params
      }
  • [:phoenix, :live_view, :handle_event, :stop] - Dispatched by a Phoenix.LiveView when the handle_event/3 callback completes successfully.

    • Measurement:
      %{duration: native_time}
    • Metadata:
      %{
        socket: Phoenix.LiveView.Socket.t,
        event: String.t(),
        params: unsigned_params
      }
  • [:phoenix, :live_view, :handle_event, :exception] - Dispatched by a Phoenix.LiveView when an exception is raised in the handle_event/3 callback.

    • Measurement:
      %{duration: native_time}
    • Metadata:
      %{
        socket: Phoenix.LiveView.Socket.t,
        kind: atom,
        reason: term,
        event: String.t(),
        params: unsigned_params
      }
  • [:phoenix, :live_component, :handle_event, :start] - Dispatched by a Phoenix.LiveComponent immediately before handle_event/3 is invoked.

    • Measurement:
      %{system_time: System.monotonic_time}
    • Metadata:
      %{
        socket: Phoenix.LiveView.Socket.t,
        component: atom,
        event: String.t(),
        params: unsigned_params
      }
  • [:phoenix, :live_component, :handle_event, :stop] - Dispatched by a Phoenix.LiveComponent when the handle_event/3 callback completes successfully.

    • Measurement:
      %{duration: native_time}
    • Metadata:
      %{
        socket: Phoenix.LiveView.Socket.t,
        component: atom,
        event: String.t(),
        params: unsigned_params
      }
  • [:phoenix, :live_component, :handle_event, :exception] - Dispatched by a Phoenix.LiveComponent when an exception is raised in the handle_event/3 callback.

    • Measurement:
      %{duration: native_time}
    • Metadata:
      %{
        socket: Phoenix.LiveView.Socket.t,
        kind: atom,
        reason: term,
        component: atom,
        event: String.t(),
        params: unsigned_params
      }