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|
# frozen_string_literal: true
# Usage data utilities
#
# * distinct_count(relation, column = nil, batch: true, start: nil, finish: nil)
# Does a distinct batch count, smartly reduces batch_size and handles errors
#
# Examples:
# issues_using_zoom_quick_actions: distinct_count(ZoomMeeting, :issue_id),
#
# * count(relation, column = nil, batch: true, start: nil, finish: nil)
# Does a non-distinct batch count, smartly reduces batch_size and handles errors
#
# Examples:
# active_user_count: count(User.active)
#
# * alt_usage_data method
# handles StandardError and fallbacks by default into -1 this way not all measures fail if we encounter one exception
# there might be cases where we need to set a specific fallback in order to be aligned wih what version app is expecting as a type
#
# Examples:
# alt_usage_data { Gitlab::VERSION }
# alt_usage_data { Gitlab::CurrentSettings.uuid }
# alt_usage_data(fallback: nil) { Gitlab.config.registry.enabled }
#
# * redis_usage_data method
# handles ::Redis::CommandError, Gitlab::UsageDataCounters::BaseCounter::UnknownEvent
# returns -1 when a block is sent or hash with all values -1 when a counter is sent
# different behaviour due to 2 different implementations of redis counter
#
# Examples:
# redis_usage_data(Gitlab::UsageDataCounters::WikiPageCounter)
# redis_usage_data { ::Gitlab::UsageCounters::PodLogs.usage_totals[:total] }
module Gitlab
module Utils
module UsageData
extend self
FALLBACK = -1
DISTRIBUTED_HLL_FALLBACK = -2
def count(relation, column = nil, batch: true, batch_size: nil, start: nil, finish: nil)
if batch
Gitlab::Database::BatchCount.batch_count(relation, column, batch_size: batch_size, start: start, finish: finish)
else
relation.count
end
rescue ActiveRecord::StatementInvalid
FALLBACK
end
def distinct_count(relation, column = nil, batch: true, batch_size: nil, start: nil, finish: nil)
if batch
Gitlab::Database::BatchCount.batch_distinct_count(relation, column, batch_size: batch_size, start: start, finish: finish)
else
relation.distinct_count_by(column)
end
rescue ActiveRecord::StatementInvalid
FALLBACK
end
def estimate_batch_distinct_count(relation, column = nil, batch_size: nil, start: nil, finish: nil)
Gitlab::Database::PostgresHll::BatchDistinctCounter
.new(relation, column)
.execute(batch_size: batch_size, start: start, finish: finish)
.estimated_distinct_count
rescue ActiveRecord::StatementInvalid
FALLBACK
# catch all rescue should be removed as a part of feature flag rollout issue
# https://gitlab.com/gitlab-org/gitlab/-/issues/285485
rescue StandardError => error
Gitlab::ErrorTracking.track_and_raise_for_dev_exception(error)
DISTRIBUTED_HLL_FALLBACK
end
def sum(relation, column, batch_size: nil, start: nil, finish: nil)
Gitlab::Database::BatchCount.batch_sum(relation, column, batch_size: batch_size, start: start, finish: finish)
rescue ActiveRecord::StatementInvalid
FALLBACK
end
def alt_usage_data(value = nil, fallback: FALLBACK, &block)
if block_given?
yield
else
value
end
rescue
fallback
end
def redis_usage_data(counter = nil, &block)
if block_given?
redis_usage_counter(&block)
elsif counter.present?
redis_usage_data_totals(counter)
end
end
def with_prometheus_client(fallback: nil, verify: true)
client = prometheus_client(verify: verify)
return fallback unless client
yield client
end
def measure_duration
result = nil
duration = Benchmark.realtime do
result = yield
end
[result, duration]
end
def with_finished_at(key, &block)
yield.merge(key => Time.current)
end
# @param event_name [String] the event name
# @param values [Array|String] the values counted
def track_usage_event(event_name, values)
return unless Feature.enabled?(:"usage_data_#{event_name}", default_enabled: true)
Gitlab::UsageDataCounters::HLLRedisCounter.track_event(event_name.to_s, values: values)
end
private
def prometheus_client(verify:)
server_address = prometheus_server_address
return unless server_address
# There really is not a way to discover whether a Prometheus connection is using TLS or not
# Try TLS first because HTTPS will return fast if failed.
%w[https http].find do |scheme|
api_url = "#{scheme}://#{server_address}"
client = Gitlab::PrometheusClient.new(api_url, allow_local_requests: true, verify: verify)
break client if client.ready?
rescue
nil
end
end
def prometheus_server_address
if Gitlab::Prometheus::Internal.prometheus_enabled?
# Stripping protocol from URI
Gitlab::Prometheus::Internal.uri&.strip&.sub(%r{^https?://}, '')
elsif Gitlab::Consul::Internal.api_url
Gitlab::Consul::Internal.discover_prometheus_server_address
end
end
def redis_usage_counter
yield
rescue ::Redis::CommandError, Gitlab::UsageDataCounters::BaseCounter::UnknownEvent
FALLBACK
end
def redis_usage_data_totals(counter)
counter.totals
rescue ::Redis::CommandError, Gitlab::UsageDataCounters::BaseCounter::UnknownEvent
counter.fallback_totals
end
end
end
end
|
