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lib/open_telemetry/sum_observer.ex
defmodule OpenTelemetry.SumObserver do
@moduledoc """
require OpenTelemetry.SumObserver
OpenTelemetry.SumObserver.set_callback("some.counter", &OpenTelemetry.SumObserver.observe(&1, 33, []))
"""
defmacro new(name, opts \\ %{}) do
quote do
:otel_sum_observer.new(:opentelemetry.get_meter(__MODULE__), unquote(name), unquote(opts))
end
end
defmacro set_callback(observer, callback) do
quote do
:otel_meter.set_observer_callback(
:opentelemetry.get_meter(__MODULE__),
unquote(observer),
unquote(callback)
)
end
end
defdelegate definition(name, opts), to: :otel_sum_observer
defdelegate observe(observer_result, number, label_set), to: :otel_sum_observer
end