70 lines
2.1 KiB
Ruby
70 lines
2.1 KiB
Ruby
# frozen_string_literal: true
|
|
|
|
module Gitlab
|
|
module Metrics
|
|
module Subscribers
|
|
# Class for tracking the total query duration of a transaction.
|
|
class ActiveRecord < ActiveSupport::Subscriber
|
|
attach_to :active_record
|
|
|
|
IGNORABLE_SQL = %w{BEGIN COMMIT}.freeze
|
|
DB_COUNTERS = %i{db_count db_write_count db_cached_count}.freeze
|
|
|
|
def sql(event)
|
|
# Mark this thread as requiring a database connection. This is used
|
|
# by the Gitlab::Metrics::Samplers::ThreadsSampler to count threads
|
|
# using a connection.
|
|
Thread.current[:uses_db_connection] = true
|
|
|
|
return unless current_transaction
|
|
|
|
payload = event.payload
|
|
return if payload[:name] == 'SCHEMA' || IGNORABLE_SQL.include?(payload[:sql])
|
|
|
|
current_transaction.observe(:gitlab_sql_duration_seconds, event.duration / 1000.0) do
|
|
buckets [0.05, 0.1, 0.25]
|
|
end
|
|
|
|
increment_db_counters(payload)
|
|
end
|
|
|
|
def self.db_counter_payload
|
|
return {} unless Gitlab::SafeRequestStore.active?
|
|
|
|
DB_COUNTERS.map do |counter|
|
|
[counter, Gitlab::SafeRequestStore[counter].to_i]
|
|
end.to_h
|
|
end
|
|
|
|
private
|
|
|
|
def select_sql_command?(payload)
|
|
payload[:sql].match(/\A((?!(.*[^\w'"](DELETE|UPDATE|INSERT INTO)[^\w'"])))(WITH.*)?(SELECT)((?!(FOR UPDATE|FOR SHARE)).)*$/i)
|
|
end
|
|
|
|
def increment_db_counters(payload)
|
|
increment(:db_count)
|
|
|
|
if payload.fetch(:cached, payload[:name] == 'CACHE')
|
|
increment(:db_cached_count)
|
|
end
|
|
|
|
increment(:db_write_count) unless select_sql_command?(payload)
|
|
end
|
|
|
|
def increment(counter)
|
|
current_transaction.increment("gitlab_transaction_#{counter}_total".to_sym, 1)
|
|
|
|
if Gitlab::SafeRequestStore.active?
|
|
Gitlab::SafeRequestStore[counter] = Gitlab::SafeRequestStore[counter].to_i + 1
|
|
end
|
|
end
|
|
|
|
def current_transaction
|
|
::Gitlab::Metrics::Transaction.current
|
|
end
|
|
end
|
|
end
|
|
end
|
|
end
|