Module: Prometheus::Client::Formats::Text

Defined in:
lib/prometheus/client/formats/text.rb

Overview

Text format is human readable mainly used for manual inspection.

Constant Summary collapse

MEDIA_TYPE = 
'text/plain'.freeze
VERSION = 
'0.0.4'.freeze
CONTENT_TYPE = 
"#{MEDIA_TYPE}; version=#{VERSION}".freeze
METRIC_LINE = 
'%s%s %s'.freeze
TYPE_LINE = 
'# TYPE %s %s'.freeze
HELP_LINE = 
'# HELP %s %s'.freeze
LABEL = 
'%s="%s"'.freeze
SEPARATOR = 
','.freeze
DELIMITER = 
"\n".freeze
REGEX = 
{ doc: /[\n\\]/, label: /[\n\\"]/ }.freeze
REPLACE = 
{ "\n" => '\n', '\\' => '\\\\', '"' => '\"' }.freeze

Class Method Summary collapse

Class Method Details

.marshal(registry) ⇒ Object 



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# File 'lib/prometheus/client/formats/text.rb', line 23

def self.marshal(registry)
  lines = []

  registry.metrics.each do |metric|
    lines << format(TYPE_LINE, metric.name, metric.type)
    lines << format(HELP_LINE, metric.name, escape(metric.docstring))

    metric.values.each do |label_set, value|
      representation(metric, label_set, value) { |l| lines << l }
    end
  end

  # there must be a trailing delimiter
  (lines << nil).join(DELIMITER)
end