94 lines
3.2 KiB
Ruby
94 lines
3.2 KiB
Ruby
# frozen_string_literal: true
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class MembersFinder
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attr_reader :project, :current_user, :group
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def initialize(project, current_user)
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@project = project
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@current_user = current_user
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@group = project.group
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end
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def execute(include_descendants: false, include_invited_groups_members: false)
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project_members = project.project_members
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project_members = project_members.non_invite unless can?(current_user, :admin_project, project)
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union_members = group_union_members(include_descendants, include_invited_groups_members)
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if union_members.any?
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distinct_union_of_members(union_members << project_members)
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else
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project_members
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end
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end
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def can?(*args)
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Ability.allowed?(*args)
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end
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private
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def group_union_members(include_descendants, include_invited_groups_members)
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[].tap do |members|
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members << direct_group_members(include_descendants) if group
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members << project_invited_groups_members if include_invited_groups_members
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end
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end
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def direct_group_members(include_descendants)
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GroupMembersFinder.new(group).execute(include_descendants: include_descendants).non_invite # rubocop: disable CodeReuse/Finder
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end
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def project_invited_groups_members
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invited_groups_ids_including_ancestors = Gitlab::ObjectHierarchy
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.new(project.invited_groups)
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.base_and_ancestors
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.public_or_visible_to_user(current_user)
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.select(:id)
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GroupMember.with_source_id(invited_groups_ids_including_ancestors)
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end
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def distinct_union_of_members(union_members)
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union = Gitlab::SQL::Union.new(union_members, remove_duplicates: false) # rubocop: disable Gitlab/Union
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sql = distinct_on(union)
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Member.includes(:user).from([Arel.sql("(#{sql}) AS #{Member.table_name}")]) # rubocop: disable CodeReuse/ActiveRecord
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end
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def distinct_on(union)
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# We're interested in a list of members without duplicates by user_id.
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# We prefer project members over group members, project members should go first.
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if Gitlab::Database.postgresql?
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<<~SQL
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SELECT DISTINCT ON (user_id, invite_email) member_union.*
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FROM (#{union.to_sql}) AS member_union
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ORDER BY user_id,
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invite_email,
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CASE
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WHEN type = 'ProjectMember' THEN 1
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WHEN type = 'GroupMember' THEN 2
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ELSE 3
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END
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SQL
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else
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# Older versions of MySQL do not support window functions (and DISTINCT ON is postgres-specific).
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<<~SQL
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SELECT t1.*
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FROM (#{union.to_sql}) AS t1
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JOIN (
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SELECT
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COALESCE(user_id, -1) AS user_id,
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COALESCE(invite_email, 'NULL') AS invite_email,
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MIN(CASE WHEN type = 'ProjectMember' THEN 1 WHEN type = 'GroupMember' THEN 2 ELSE 3 END) AS type_number
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FROM
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(#{union.to_sql}) AS t3
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GROUP BY COALESCE(user_id, -1), COALESCE(invite_email, 'NULL')
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) AS t2 ON COALESCE(t1.user_id, -1) = t2.user_id
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AND COALESCE(t1.invite_email, 'NULL') = t2.invite_email
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AND CASE WHEN t1.type = 'ProjectMember' THEN 1 WHEN t1.type = 'GroupMember' THEN 2 ELSE 3 END = t2.type_number
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SQL
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end
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end
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end
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