View Source 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,
        uri: String.t() | nil
      }
  • [: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,
        uri: String.t() | nil
      }
  • [: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,
        uri: String.t() | nil
      }
  • [: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 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_view, :render, :start] - Dispatched by a Phoenix.LiveView immediately before render/1 is invoked.

    • Measurement:

      %{system_time: System.monotonic_time}
    • Metadata:

      %{
        socket: Phoenix.LiveView.Socket.t,
        force?: boolean,
        changed?: boolean
      }
  • [:phoenix, :live_view, :render, :stop] - Dispatched by a Phoenix.LiveView when the render/1 callback completes successfully.

    • Measurement:

      %{duration: native_time}
    • Metadata:

      %{
        socket: Phoenix.LiveView.Socket.t,
        force?: boolean,
        changed?: boolean
      }
  • [:phoenix, :live_view, :render, :exception] - Dispatched by a Phoenix.LiveView when an exception is raised in the render/1 callback.

    • Measurement:

      %{duration: native_time}
    • Metadata:

      %{
        socket: Phoenix.LiveView.Socket.t,
        kind: atom,
        reason: term,
        force?: boolean,
        changed?: boolean
      }
  • [:phoenix, :live_component, :update, :start] - Dispatched by a Phoenix.LiveComponent immediately before update/2 or a update_many/1 is invoked.

    In the case ofupdate/2 it might dispatch one event for multiple calls.

    • Measurement:

      %{system_time: System.monotonic_time}
    • Metadata:

      %{
        socket: Phoenix.LiveView.Socket.t,
        component: atom,
        assigns_sockets: {map(), Phoenix.LiveView.Socket.t}
      }
  • [:phoenix, :live_component, :update, :stop] - Dispatched by a Phoenix.LiveComponent when the update/2 or a update_many/1 callback completes successfully.

    In the case ofupdate/2 it might dispatch one event for multiple calls. The sockets metadata contain the updated sockets.

    • Measurement:

      %{duration: native_time}
    • Metadata:

      %{
        socket: Phoenix.LiveView.Socket.t,
        component: atom,
        assigns_sockets: {map(), Phoenix.LiveView.Socket.t},
        sockets: Phoenix.LiveView.Socket.t
      }
  • [:phoenix, :live_component, :update, :exception] - Dispatched by a Phoenix.LiveComponent when an exception is raised in the update/2 or a update_many/1 callback.

    In the case ofupdate/2 it might dispatch one event for multiple calls.

    • Measurement:

      %{duration: native_time}
    • Metadata:

      %{
        socket: Phoenix.LiveView.Socket.t,
        kind: atom,
        reason: term,
        component: atom,
        assigns_sockets: {map(), Phoenix.LiveView.Socket.t}
      }
  • [: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
      }