class PrometheusExporter::Server::UnicornCollector
custom type collector for prometheus_exporter for handling the metrics sent from PrometheusExporter::Instrumentation::Unicorn
Constants
- MAX_UNICORN_METRIC_AGE
- UNICORN_GAUGES
Public Class Methods
new()
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# File lib/prometheus_exporter/server/unicorn_collector.rb, line 14 def initialize @unicorn_metrics = [] end
Public Instance Methods
collect(obj)
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# File lib/prometheus_exporter/server/unicorn_collector.rb, line 42 def collect(obj) now = ::Process.clock_gettime(::Process::CLOCK_MONOTONIC) obj["created_at"] = now @unicorn_metrics.delete_if { |m| m['created_at'] + MAX_UNICORN_METRIC_AGE < now } @unicorn_metrics << obj end
metrics()
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# File lib/prometheus_exporter/server/unicorn_collector.rb, line 22 def metrics return [] if @unicorn_metrics.length.zero? metrics = {} @unicorn_metrics.map do |m| labels = m["custom_labels"] || {} UNICORN_GAUGES.map do |k, help| k = k.to_s if (v = m[k]) g = metrics[k] ||= PrometheusExporter::Metric::Gauge.new("unicorn_#{k}", help) g.observe(v, labels) end end end metrics.values end
type()
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# File lib/prometheus_exporter/server/unicorn_collector.rb, line 18 def type 'unicorn' end