34 lines
1 KiB
Ruby
34 lines
1 KiB
Ruby
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# frozen_string_literal: true
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module MergeRequests
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# OldestPerCommitFinder is used to retrieve the oldest merge requests for
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# every given commit, grouped per commit SHA.
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#
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# This finder is useful when you need to efficiently retrieve the first/oldest
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# merge requests for multiple commits, and you want to do so in batches;
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# instead of running a query for every commit.
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class OldestPerCommitFinder
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def initialize(project)
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@project = project
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end
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# Returns a Hash that maps a commit ID to the oldest merge request that
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# introduced that commit.
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def execute(commits)
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id_rows = MergeRequestDiffCommit
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.oldest_merge_request_id_per_commit(@project.id, commits.map(&:id))
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mrs = MergeRequest
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.preload_target_project
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.id_in(id_rows.map { |r| r[:merge_request_id] })
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.index_by(&:id)
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id_rows.each_with_object({}) do |row, hash|
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if (mr = mrs[row[:merge_request_id]])
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hash[row[:sha]] = mr
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end
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end
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end
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end
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end
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