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module Longboat
class Collector
def initialize
@metrics = {}
end
def report!(name, value, help: nil, type: nil, labels: {}, timestamp: Time.now)
@metrics[name] ||= {help: help, type: type}
@metrics[name][labels] = {value: value, timestamp: timestamp}
end
def prometheus_metrics
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[:value]} #{(value[:timestamp].to_f * 1000).to_i}\n"
end
end
res
end
end
end
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