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