Class: Sc4ry::Notifiers::Prometheus

Inherits:
Object
  • Object
show all
Defined in:
lib/sc4ry/notifiers/prometheus.rb

Constant Summary collapse

@@registry = 
::Prometheus::Client::Registry::new
@@metric_circuit_state = 
::Prometheus::Client::Gauge.new(:cuircuit_state, docstring: 'Sc4ry metric : state of a circuit', labels: [:circuit])

Class Method Summary collapse

Class Method Details

.notify(options = {}) ⇒ Bool

send metrics to Prometheus PushGateway

Returns:

  • (Bool) 


16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
 
# File 'lib/sc4ry/notifiers/prometheus.rb', line 16

def Prometheus.notify(options = {})
  @config = Sc4ry::Notifiers.get({name: :prometheus})[:config]
  status = options[:config][:status][:general]
  circuit = options[:circuit]
  status_map = {:open => 0, :half_open => 1, :closed => 2}
  if Sc4ry::Helpers::verify_service url: @config[:url] then
    
    @@metric_circuit_state.set(status_map[status], labels: {circuit: circuit.to_s })
    Sc4ry::Helpers.log level: :debug, message: "Prometheus Notifier : notifying for circuit #{circuit.to_s}, state : #{status.to_s}."

    return ::Prometheus::Client::Push.new(job: "Sc4ry", instance: Socket.gethostname, gateway: @config[:url]).add(@@registry)
  else
    Sc4ry::Helpers.log level: :warn, message: "Prometheus Notifier : can't notify Push Gateway not reachable."
  end
end