Telemetry

LiveView currently exposes the following telemetry events:

• [:phoenix, :live_view, :mount, :start] - Dispatched by a Phoenix.LiveView immediately before c: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 c: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 c: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 c: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 c: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 c: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 c: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 c: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 c: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 c: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 c: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 c: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
    }