103 lines
2.9 KiB
Ruby
103 lines
2.9 KiB
Ruby
class NotesFinder
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FETCH_OVERLAP = 5.seconds
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# Used to filter Notes
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# When used with target_type and target_id this returns notes specifically for the controller
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#
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# Arguments:
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# current_user - which user check authorizations with
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# project - which project to look for notes on
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# params:
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# target_type: string
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# target_id: integer
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# last_fetched_at: time
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# search: string
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#
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def initialize(project, current_user, params = {})
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@project = project
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@current_user = current_user
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@params = params
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init_collection
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end
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def execute
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@notes = since_fetch_at(@params[:last_fetched_at]) if @params[:last_fetched_at]
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@notes
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end
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private
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def init_collection
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@notes =
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if @params[:target_id]
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on_target(@params[:target_type], @params[:target_id])
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else
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notes_of_any_type
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end
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end
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def notes_of_any_type
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types = %w(commit issue merge_request snippet)
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note_relations = types.map { |t| notes_for_type(t) }
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note_relations.map!{ |notes| search(@params[:search], notes) } if @params[:search]
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UnionFinder.new.find_union(note_relations, Note)
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end
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def noteables_for_type(noteable_type)
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case noteable_type
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when "issue"
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IssuesFinder.new(@current_user, project_id: @project.id).execute
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when "merge_request"
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MergeRequestsFinder.new(@current_user, project_id: @project.id).execute
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when "snippet", "project_snippet"
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SnippetsFinder.new.execute(@current_user, filter: :by_project, project: @project)
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else
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raise 'invalid target_type'
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end
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end
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def notes_for_type(noteable_type)
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if noteable_type == "commit"
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if Ability.allowed?(@current_user, :download_code, @project)
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@project.notes.where(noteable_type: 'Commit')
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else
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Note.none
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end
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else
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finder = noteables_for_type(noteable_type)
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@project.notes.where(noteable_type: finder.base_class.name, noteable_id: finder.reorder(nil))
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end
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end
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def on_target(target_type, target_id)
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if target_type == "commit"
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notes_for_type('commit').for_commit_id(target_id)
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else
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target = noteables_for_type(target_type).find(target_id)
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if target.respond_to?(:related_notes)
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target.related_notes
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else
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target.notes
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end
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end
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end
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# Searches for notes matching the given query.
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#
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# This method uses ILIKE on PostgreSQL and LIKE on MySQL.
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#
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def search(query, notes_relation = @notes)
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pattern = "%#{query}%"
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notes_relation.where(Note.arel_table[:note].matches(pattern))
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end
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# Notes changed since last fetch
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# Uses overlapping intervals to avoid worrying about race conditions
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def since_fetch_at(fetch_time)
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# Default to 0 to remain compatible with old clients
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last_fetched_at = Time.at(@params.fetch(:last_fetched_at, 0).to_i)
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@notes.where('updated_at > ?', last_fetched_at - FETCH_OVERLAP).fresh
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end
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end
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