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Contents
# frozen_string_literal: true
require_relative "../rubocop" unless defined?(RuboCop::Cop::StatsD)
module RuboCop
module Cop
module StatsD
# This Rubocop will check for using the return value of StatsD metric calls, which is deprecated.
# To check your codebase, use the following Rubocop invocation:
#
# rubocop --require `bundle show statsd-instrument`/lib/statsd/instrument/rubocop.rb \
# --only StatsD/MetricReturnValue
#
# This cop cannot autocorrect offenses. In production code, StatsD should be used in a fire-and-forget
# fashion. This means that you shouldn't rely on the return value. If you really need to access the
# emitted metrics, you can look into `capture_statsd_calls`
class MetricReturnValue < Base
include RuboCop::Cop::StatsD
MSG = "Do not use the return value of StatsD metric methods"
INVALID_PARENTS = [:lvasgn, :array, :pair, :send, :return, :yield]
def on_send(node)
if metric_method?(node) && node.arguments.last&.type != :block_pass
add_offense(node.parent) if INVALID_PARENTS.include?(node.parent&.type)
end
end
end
end
end
end
Version data entries
7 entries across 7 versions & 1 rubygems