114 lines
3.5 KiB
Ruby
114 lines
3.5 KiB
Ruby
# frozen_string_literal: true
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# Usage data utilities
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#
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# * distinct_count(relation, column = nil, batch: true, start: nil, finish: nil)
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# Does a distinct batch count, smartly reduces batch_size and handles errors
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#
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# Examples:
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# issues_using_zoom_quick_actions: distinct_count(ZoomMeeting, :issue_id),
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#
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# * count(relation, column = nil, batch: true, start: nil, finish: nil)
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# Does a non-distinct batch count, smartly reduces batch_size and handles errors
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#
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# Examples:
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# active_user_count: count(User.active)
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#
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# * alt_usage_data method
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# handles StandardError and fallbacks by default into -1 this way not all measures fail if we encounter one exception
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# 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
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#
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# Examples:
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# alt_usage_data { Gitlab::VERSION }
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# alt_usage_data { Gitlab::CurrentSettings.uuid }
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# alt_usage_data(fallback: nil) { Gitlab.config.registry.enabled }
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#
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# * redis_usage_data method
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# handles ::Redis::CommandError, Gitlab::UsageDataCounters::BaseCounter::UnknownEvent
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# returns -1 when a block is sent or hash with all values -1 when a counter is sent
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# different behaviour due to 2 different implementations of redis counter
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#
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# Examples:
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# redis_usage_data(Gitlab::UsageDataCounters::WikiPageCounter)
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# redis_usage_data { ::Gitlab::UsageCounters::PodLogs.usage_totals[:total] }
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module Gitlab
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module Utils
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module UsageData
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extend self
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FALLBACK = -1
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def count(relation, column = nil, batch: true, start: nil, finish: nil)
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if batch
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Gitlab::Database::BatchCount.batch_count(relation, column, start: start, finish: finish)
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else
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relation.count
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end
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rescue ActiveRecord::StatementInvalid
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FALLBACK
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end
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def distinct_count(relation, column = nil, batch: true, batch_size: nil, start: nil, finish: nil)
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if batch
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Gitlab::Database::BatchCount.batch_distinct_count(relation, column, batch_size: batch_size, start: start, finish: finish)
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else
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relation.distinct_count_by(column)
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end
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rescue ActiveRecord::StatementInvalid
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FALLBACK
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end
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def alt_usage_data(value = nil, fallback: FALLBACK, &block)
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if block_given?
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yield
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else
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value
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end
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rescue
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fallback
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end
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def redis_usage_data(counter = nil, &block)
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if block_given?
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redis_usage_counter(&block)
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elsif counter.present?
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redis_usage_data_totals(counter)
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end
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end
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def with_prometheus_client(fallback: nil)
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return fallback unless Gitlab::Prometheus::Internal.prometheus_enabled?
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prometheus_address = Gitlab::Prometheus::Internal.uri
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yield Gitlab::PrometheusClient.new(prometheus_address, allow_local_requests: true)
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end
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def measure_duration
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result = nil
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duration = Benchmark.realtime do
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result = yield
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end
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[result, duration]
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end
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def with_finished_at(key, &block)
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yield.merge(key => Time.current)
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end
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private
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def redis_usage_counter
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yield
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rescue ::Redis::CommandError, Gitlab::UsageDataCounters::BaseCounter::UnknownEvent
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FALLBACK
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end
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def redis_usage_data_totals(counter)
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counter.totals
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rescue ::Redis::CommandError, Gitlab::UsageDataCounters::BaseCounter::UnknownEvent
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counter.fallback_totals
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end
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end
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end
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end
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