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# frozen_string_literal: true
module Gitlab
module Analytics
module CycleAnalytics
# Arguments:
# stage - an instance of CycleAnalytics::ProjectStage or CycleAnalytics::GroupStage
# params:
# current_user: an instance of User
# from: DateTime
# to: DateTime
class DataCollector
include Gitlab::Utils::StrongMemoize
MAX_COUNT = 1001
delegate :serialized_records, to: :records_fetcher
def initialize(stage:, params: {})
@stage = stage
@params = params
end
def records_fetcher
strong_memoize(:records_fetcher) do
if use_aggregated_data_collector?
aggregated_data_collector.records_fetcher
else
RecordsFetcher.new(stage: stage, query: query, params: params)
end
end
end
def median
strong_memoize(:median) do
if use_aggregated_data_collector?
aggregated_data_collector.median
else
Median.new(stage: stage, query: query, params: params)
end
end
end
def average
strong_memoize(:average) do
Average.new(stage: stage, query: query, params: params)
end
end
def count
strong_memoize(:count) do
if use_aggregated_data_collector?
aggregated_data_collector.count
else
limit_count
end
end
end
private
attr_reader :stage, :params
def query
BaseQueryBuilder.new(stage: stage, params: params).build
end
# Limiting the maximum number of records so the COUNT(*) query stays efficient for large groups.
# COUNT = 1001, show 1000+ on the UI
# COUNT < 1001, show the actual number on the UI
def limit_count
query.limit(MAX_COUNT).count
end
def aggregated_data_collector
@aggregated_data_collector ||= Aggregated::DataCollector.new(stage: stage, params: params)
end
def use_aggregated_data_collector?
params.fetch(:use_aggregated_data_collector, false)
end
end
end
end
end
Gitlab::Analytics::CycleAnalytics::DataCollector.prepend_mod_with('Gitlab::Analytics::CycleAnalytics::DataCollector')
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