86 lines
3.1 KiB
Ruby
86 lines
3.1 KiB
Ruby
module Gitlab
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module CycleAnalytics
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class MetricsFetcher
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include Gitlab::Database::Median
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include Gitlab::Database::DateTime
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include MetricsTables
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attr_reader :project
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DEPLOYMENT_METRIC_STAGES = %i[production staging]
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def initialize(project:, from:, branch:, stage:)
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@project = project
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@from = from
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@branch = branch
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@stage = stage
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end
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def median
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cte_table = Arel::Table.new("cte_table_for_#{@stage.stage}")
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# Build a `SELECT` query. We find the first of the `end_time_attrs` that isn't `NULL` (call this end_time).
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# Next, we find the first of the start_time_attrs that isn't `NULL` (call this start_time).
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# We compute the (end_time - start_time) interval, and give it an alias based on the current
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# cycle analytics stage.
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interval_query = Arel::Nodes::As.new(
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cte_table,
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subtract_datetimes(base_query_for(@stage.stage), @stage.start_time_attrs, @stage.end_time_attrs, @stage.stage.to_s))
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median_datetime(cte_table, interval_query, @stage.stage)
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end
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def events
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ActiveRecord::Base.connection.exec_query(events_query.to_sql)
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end
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private
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def events_query
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base_query = base_query_for(@stage.stage)
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diff_fn = subtract_datetimes_diff(base_query, @stage.start_time_attrs, @stage.end_time_attrs)
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@stage.event.custom_query(base_query)
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base_query.project(extract_diff_epoch(diff_fn).as('total_time'), *@stage.event.projections).order(order.desc)
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end
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def order
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@stage.event.order || default_order
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end
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def default_order
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@stage.start_time_attrs.is_a?(Array) ? @stage.start_time_attrs.first : @stage.start_time_attrs
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end
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# Join table with a row for every <issue,merge_request> pair (where the merge request
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# closes the given issue) with issue and merge request metrics included. The metrics
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# are loaded with an inner join, so issues / merge requests without metrics are
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# automatically excluded.
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def base_query_for(name)
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# Load issues
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query = mr_closing_issues_table.join(issue_table).on(issue_table[:id].eq(mr_closing_issues_table[:issue_id])).
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join(issue_metrics_table).on(issue_table[:id].eq(issue_metrics_table[:issue_id])).
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where(issue_table[:project_id].eq(@project.id)).
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where(issue_table[:deleted_at].eq(nil)).
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where(issue_table[:created_at].gteq(@from))
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query = query.where(build_table[:ref].eq(@branch)) if name == :test && @branch
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# Load merge_requests
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query = query.join(mr_table, Arel::Nodes::OuterJoin).
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on(mr_table[:id].eq(mr_closing_issues_table[:merge_request_id])).
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join(mr_metrics_table).
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on(mr_table[:id].eq(mr_metrics_table[:merge_request_id]))
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if DEPLOYMENT_METRIC_STAGES.include?(name)
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# Limit to merge requests that have been deployed to production after `@from`
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query.where(mr_metrics_table[:first_deployed_to_production_at].gteq(@from))
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end
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query
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end
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end
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end
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end
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