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# frozen_string_literal: true
# Copyright The OpenTelemetry Authors
#
# SPDX-License-Identifier: Apache-2.0
module OpenTelemetry
module SDK
module Metrics
module Instrument
# {Counter} is the SDK implementation of {OpenTelemetry::Metrics::Counter}.
class Counter < OpenTelemetry::SDK::Metrics::Instrument::SynchronousInstrument
# Returns the instrument kind as a Symbol
#
# @return [Symbol]
def instrument_kind
:counter
end
# Increment the Counter by a fixed amount.
#
# @param [numeric] increment The increment amount, which MUST be a non-negative numeric value.
# @param [Hash{String => String, Numeric, Boolean, Array<String, Numeric, Boolean>}] attributes
# Values must be non-nil and (array of) string, boolean or numeric type.
# Array values must not contain nil elements and all elements must be of
# the same basic type (string, numeric, boolean).
def add(increment, attributes: {})
# TODO: When the metrics SDK stabilizes and is merged into the main SDK,
# we can leverage the SDK Internal validation classes to enforce this:
# https://github.com/open-telemetry/opentelemetry-ruby/blob/6bec625ef49004f364457c26263df421526b60d6/sdk/lib/opentelemetry/sdk/internal.rb#L47
if increment.negative?
OpenTelemetry.logger.warn("#{@name} received a negative value")
else
update(increment, attributes)
end
nil
rescue StandardError => e
OpenTelemetry.handle_error(exception: e)
nil
end
private
def default_aggregation
OpenTelemetry::SDK::Metrics::Aggregation::Sum.new
end
end
end
end
end
end
Version data entries
6 entries across 6 versions & 1 rubygems