lib/foreman/telemetry_sinks/statsd_sink.rb
module Foreman
module TelemetrySinks
class StatsdSink
def initialize(opts = {})
require 'statsd-instrument'
@instances = {}
host = opts[:host] || '127.0.0.1:8125'
@protocol = opts[:protocol].try(:to_sym) || :statsite
StatsD.backend = StatsD::Instrument::Backends::UDPBackend.new(host, @protocol)
end
def add_counter(name, description, instance_labels)
raise ::Foreman::Exception.new(N_('Metric already registered: %s'), name) if @instances[name]
@instances[name] = instance_labels
end
def add_gauge(name, description, instance_labels)
raise ::Foreman::Exception.new(N_('Metric already registered: %s'), name) if @instances[name]
@instances[name] = instance_labels
end
def add_histogram(name, description, instance_labels, buckets)
raise ::Foreman::Exception.new(N_('Metric already registered: %s'), name) if @instances[name]
@instances[name] = instance_labels
end
def increment_counter(name, value, tags)
if @protocol == :datadog
if tags&.any?
# https://github.com/Shopify/statsd-instrument/issues/298
StatsD.increment(name, value, tags: tags_in_statsd(tags))
else
StatsD.increment(name, value)
end
else
StatsD.increment(name_tag_mapping(name, tags), value)
end
end
def set_gauge(name, value, tags)
if @protocol == :datadog
if tags&.any?
# https://github.com/Shopify/statsd-instrument/issues/298
StatsD.gauge(name, value, tags: tags_in_statsd(tags))
else
StatsD.gauge(name, value)
end
else
StatsD.gauge(name_tag_mapping(name, tags), value)
end
end
def observe_histogram(name, value, tags)
if @protocol == :datadog
if tags&.any?
# https://github.com/Shopify/statsd-instrument/issues/298
StatsD.measure(name, value, tags: tags_in_statsd(tags))
else
StatsD.measure(name, value)
end
else
StatsD.measure(name_tag_mapping(name, tags), value)
end
end
private
def name_tag_mapping(name, tags)
insts = @instances[name]
return name if insts.blank?
(name.to_s + '.' + insts.map { |x| tags[x] }.compact.join('.')).tr('-:/ ', '____')
end
def tags_in_statsd(tags)
result = []
tags.each_pair do |name, value|
result << "#{name}:#{value.to_s.tr('-:/ ', '____')}"
end
result
end
end
end
end