diff options
Diffstat (limited to 'lib/gitlab/metrics/connection_rack_middleware.rb')
-rw-r--r-- | lib/gitlab/metrics/connection_rack_middleware.rb | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/lib/gitlab/metrics/connection_rack_middleware.rb b/lib/gitlab/metrics/connection_rack_middleware.rb new file mode 100644 index 00000000000..b3da360be8f --- /dev/null +++ b/lib/gitlab/metrics/connection_rack_middleware.rb @@ -0,0 +1,45 @@ +module Gitlab + module Metrics + class ConnectionRackMiddleware + def initialize(app) + @app = app + end + + def self.rack_request_count + @rack_request_count ||= Gitlab::Metrics.counter(:rack_request, 'Rack request count') + end + + def self.rack_response_count + @rack_response_count ||= Gitlab::Metrics.counter(:rack_response, 'Rack response count') + end + + def self.rack_uncaught_errors_count + @rack_uncaught_errors_count ||= Gitlab::Metrics.counter(:rack_uncaught_errors, 'Rack connections handling uncaught errors count') + end + + def self.rack_execution_time + @rack_execution_time ||= Gitlab::Metrics.histogram(:rack_execution_time, 'Rack connection handling execution time', + {}, [0.05, 0.1, 0.25, 0.5, 0.7, 1, 1.5, 2, 2.5, 3, 5, 7, 10]) + end + + def call(env) + method = env['REQUEST_METHOD'].downcase + started = Time.now.to_f + begin + ConnectionRackMiddleware.rack_request_count.increment(method: method) + + status, headers, body = @app.call(env) + + ConnectionRackMiddleware.rack_response_count.increment(method: method, status: status) + [status, headers, body] + rescue + ConnectionRackMiddleware.rack_uncaught_errors_count.increment + raise + ensure + elapsed = Time.now.to_f - started + ConnectionRackMiddleware.rack_execution_time.observe({}, elapsed) + end + end + end + end +end |