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module Longboat
module Metrics
class << self
def report!(name, value, help: nil, type: nil, labels: {})
@metrics ||= {}
@metrics[name] ||= {help: help, type: type}
@metrics[name][labels] = value
end
def to_s
timestamp = (Time.now.to_f * 1000).to_i
res = ""
(@metrics || {}).each do |name, metric|
res << "#HELP #{name} #{metric[:help]}\n" unless metric[:help].nil?
res << "#TYPE #{name} #{metric[:type]}\n" unless metric[:type].nil?
metric.each do |labels, value|
next if labels == :help
next if labels == :type
labellist = []
labels.each do |k, v|
labellist << "#{k}=\"#{v}\""
end
labellist = labellist.join(",")
res << "#{name}{#{labellist}} #{value} #{timestamp}\n"
end
end
res
end
def register!(collector)
@collectors ||= []
@collectors << collector
end
def collect!
(@collectors || []).each do |collector|
collector.collect!
end
end
end
end
end
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