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# Inspired by https://github.com/peek/peek-pg/blob/master/lib/peek/views/pg.rb
# PEEK_DB_CLIENT is a constant set in config/initializers/peek.rb
module Gitlab
module PerformanceBar
module PeekQueryTracker
def sorted_queries
PEEK_DB_CLIENT.query_details
.sort { |a, b| b[:duration] <=> a[:duration] }
end
def results
super.merge(queries: sorted_queries)
end
private
def setup_subscribers
super
# Reset each counter when a new request starts
before_request do
PEEK_DB_CLIENT.query_details = []
end
subscribe('sql.active_record') do |_, start, finish, _, data|
if RequestStore.active? && RequestStore.store[:peek_enabled]
# data[:cached] is only available starting from Rails 5.1.0
# https://github.com/rails/rails/blob/v5.1.0/activerecord/lib/active_record/connection_adapters/abstract/query_cache.rb#L113
# Before that, data[:name] was set to 'CACHE'
# https://github.com/rails/rails/blob/v4.2.9/activerecord/lib/active_record/connection_adapters/abstract/query_cache.rb#L80
unless data.fetch(:cached, data[:name] == 'CACHE')
track_query(data[:sql].strip, data[:binds], start, finish)
end
end
end
end
def track_query(raw_query, bindings, start, finish)
query = Gitlab::Sherlock::Query.new(raw_query, start, finish)
query_info = { duration: query.duration.round(3), sql: query.formatted_query }
PEEK_DB_CLIENT.query_details << query_info
end
end
end
end
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