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# frozen_string_literal: true
module Gitlab
module Metrics
include Gitlab::Metrics::Prometheus
EXECUTION_MEASUREMENT_BUCKETS = [0.001, 0.01, 0.1, 1].freeze
@error = false
def self.enabled?
prometheus_metrics_enabled?
end
def self.error?
@error
end
def self.record_duration_for_status?(status)
status.to_i.between?(200, 499)
end
def self.server_error?(status)
status.to_i >= 500
end
# Tracks an event.
#
# See `Gitlab::Metrics::Transaction#add_event` for more details.
def self.add_event(*args)
current_transaction&.add_event(*args)
end
# Allow access from other metrics related middlewares
def self.current_transaction
WebTransaction.current || BackgroundTransaction.current
end
# Returns the prefix to use for the name of a series.
def self.series_prefix
@series_prefix ||= Gitlab::Runtime.sidekiq? ? 'sidekiq_' : 'rails_'
end
def self.settings
@settings ||= begin
current_settings = Gitlab::CurrentSettings.current_application_settings
{
method_call_threshold: current_settings[:metrics_method_call_threshold]
}
end
end
def self.method_call_threshold
# This is memoized since this method is called for every instrumented
# method. Loading data from an external cache on every method call slows
# things down too much.
# in milliseconds
@method_call_threshold ||= settings[:method_call_threshold]
end
# Measures the execution time of a block.
#
# Example:
#
# Gitlab::Metrics.measure(:find_by_username_duration) do
# UserFinder.new(some_username).find_by_username
# end
#
# name - The name of the field to store the execution time in.
#
# Returns the value yielded by the supplied block.
def self.measure(name)
trans = current_transaction
return yield unless trans
real_start = System.monotonic_time
cpu_start = System.cpu_time
retval = yield
cpu_stop = System.cpu_time
real_stop = System.monotonic_time
real_time = (real_stop - real_start)
cpu_time = cpu_stop - cpu_start
trans.observe("gitlab_#{name}_real_duration_seconds".to_sym, real_time) do
docstring "Measure #{name}"
buckets EXECUTION_MEASUREMENT_BUCKETS
end
trans.observe("gitlab_#{name}_cpu_duration_seconds".to_sym, cpu_time) do
docstring "Measure #{name}"
buckets EXECUTION_MEASUREMENT_BUCKETS
with_feature "prometheus_metrics_measure_#{name}_cpu_duration"
end
retval
end
end
end
|
