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path: root/lib/rook_web/telemetry.ex
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pre { line-height: 125%; }
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defmodule RookWeb.Telemetry do
  use Supervisor
  import
an> Supervisor.start_link(__MODULE__, arg, name: __MODULE__) end @impl true def init(_arg) do children = [ # Telemetry poller will execute the given period measurements # every 10_000ms. Learn more here: https://hexdocs.pm/telemetry_metrics {:telemetry_poller, measurements: periodic_measurements(), period: 10_000} # Add reporters as children of your supervision tree. # {Telemetry.Metrics.ConsoleReporter, metrics: metrics()} ] Supervisor.init(children, strategy: :one_for_one) end def metrics do [ # Phoenix Metrics summary("phoenix.endpoint.stop.duration", unit: {:native, :millisecond} ), summary("phoenix.router_dispatch.stop.duration", tags: [:route], unit: {:native, :millisecond} ), # VM Metrics summary("vm.memory.total", unit: {:byte, :kilobyte}), summary("vm.total_run_queue_lengths.total"), summary("vm.total_run_queue_lengths.cpu"), summary("vm.total_run_queue_lengths.io") ] end defp periodic_measurements do [ # A module, function and arguments to be invoked periodically. # This function must call :telemetry.execute/3 and a metric must be added above. # {RookWeb, :count_users, []} ] end end