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authorPawel Chojnacki <pawel@chojnacki.ws>2017-05-19 17:03:10 +0200
committerPawel Chojnacki <pawel@chojnacki.ws>2017-06-02 19:45:58 +0200
commit0f4050430d400daffbc5a68b15d79b896bb8a692 (patch)
tree7140c4edba672350570f53f26effe85ba4ba6289 /app/controllers/metrics_controller.rb
parentcf932df2348dc3ccd06ca557b68edc60f518c893 (diff)
downloadgitlab-ce-0f4050430d400daffbc5a68b15d79b896bb8a692.tar.gz
Split metrics from health controller into metrics controller
Diffstat (limited to 'app/controllers/metrics_controller.rb')
-rw-r--r--app/controllers/metrics_controller.rb41
1 files changed, 41 insertions, 0 deletions
diff --git a/app/controllers/metrics_controller.rb b/app/controllers/metrics_controller.rb
new file mode 100644
index 00000000000..a4ba77e235f
--- /dev/null
+++ b/app/controllers/metrics_controller.rb
@@ -0,0 +1,41 @@
+require 'prometheus/client/formats/text'
+
+class MetricsController < ActionController::Base
+ protect_from_forgery with: :exception
+
+ CHECKS = [
+ Gitlab::HealthChecks::DbCheck,
+ Gitlab::HealthChecks::RedisCheck,
+ Gitlab::HealthChecks::FsShardsCheck,
+ ].freeze
+
+ def metrics
+ render_404 unless Gitlab::Metrics.prometheus_metrics_enabled?
+
+ metrics_text = Prometheus::Client::Formats::Text.marshal_multiprocess(Settings.gitlab['prometheus_multiproc_dir'])
+ response = health_metrics_text + "\n" + metrics_text
+
+ render text: response, content_type: 'text/plain; version=0.0.4'
+ end
+
+ private
+
+ def health_metrics_text
+ results = CHECKS.flat_map(&:metrics)
+
+ types = results.map(&:name)
+ .uniq
+ .map { |metric_name| "# TYPE #{metric_name} gauge" }
+ metrics = results.map(&method(:metric_to_prom_line))
+ types.concat(metrics).join("\n")
+ end
+
+ def metric_to_prom_line(metric)
+ labels = metric.labels&.map { |key, value| "#{key}=\"#{value}\"" }&.join(',') || ''
+ if labels.empty?
+ "#{metric.name} #{metric.value}"
+ else
+ "#{metric.name}{#{labels}} #{metric.value}"
+ end
+ end
+end