138 lines
4.3 KiB
Ruby
138 lines
4.3 KiB
Ruby
# frozen_string_literal: true
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module Ci
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# Takes in input a Ci::Bridge job and creates a downstream pipeline
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# (either multi-project or child pipeline) according to the Ci::Bridge
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# specifications.
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class CreateDownstreamPipelineService < ::BaseService
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include Gitlab::Utils::StrongMemoize
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DuplicateDownstreamPipelineError = Class.new(StandardError)
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MAX_DESCENDANTS_DEPTH = 2
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def execute(bridge)
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@bridge = bridge
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if bridge.has_downstream_pipeline?
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Gitlab::ErrorTracking.track_exception(
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DuplicateDownstreamPipelineError.new,
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bridge_id: @bridge.id, project_id: @bridge.project_id
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)
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return
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end
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pipeline_params = @bridge.downstream_pipeline_params
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target_ref = pipeline_params.dig(:target_revision, :ref)
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return unless ensure_preconditions!(target_ref)
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service = ::Ci::CreatePipelineService.new(
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pipeline_params.fetch(:project),
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current_user,
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pipeline_params.fetch(:target_revision))
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downstream_pipeline = service.execute(
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pipeline_params.fetch(:source), **pipeline_params[:execute_params])
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downstream_pipeline.tap do |pipeline|
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update_bridge_status!(@bridge, pipeline)
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end
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end
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private
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def update_bridge_status!(bridge, pipeline)
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Gitlab::OptimisticLocking.retry_lock(bridge, name: 'create_downstream_pipeline_update_bridge_status') do |subject|
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if pipeline.created_successfully?
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# If bridge uses `strategy:depend` we leave it running
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# and update the status when the downstream pipeline completes.
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subject.success! unless subject.dependent?
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else
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subject.options[:downstream_errors] = pipeline.errors.full_messages
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subject.drop!(:downstream_pipeline_creation_failed)
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end
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end
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rescue StateMachines::InvalidTransition => e
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Gitlab::ErrorTracking.track_exception(
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Ci::Bridge::InvalidTransitionError.new(e.message),
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bridge_id: bridge.id,
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downstream_pipeline_id: pipeline.id)
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end
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def ensure_preconditions!(target_ref)
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unless downstream_project_accessible?
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@bridge.drop!(:downstream_bridge_project_not_found)
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return false
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end
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# TODO: Remove this condition if favour of model validation
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# https://gitlab.com/gitlab-org/gitlab/issues/38338
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if downstream_project == project && !@bridge.triggers_child_pipeline?
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@bridge.drop!(:invalid_bridge_trigger)
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return false
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end
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# TODO: Remove this condition if favour of model validation
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# https://gitlab.com/gitlab-org/gitlab/issues/38338
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if has_max_descendants_depth?
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@bridge.drop!(:reached_max_descendant_pipelines_depth)
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return false
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end
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unless can_create_downstream_pipeline?(target_ref)
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@bridge.drop!(:insufficient_bridge_permissions)
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return false
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end
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if has_cyclic_dependency?
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@bridge.drop!(:pipeline_loop_detected)
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return false
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end
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true
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end
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def downstream_project_accessible?
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downstream_project.present? &&
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can?(current_user, :read_project, downstream_project)
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end
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def can_create_downstream_pipeline?(target_ref)
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can?(current_user, :update_pipeline, project) &&
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can?(current_user, :create_pipeline, downstream_project) &&
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can_update_branch?(target_ref)
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end
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def can_update_branch?(target_ref)
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::Gitlab::UserAccess.new(current_user, container: downstream_project).can_update_branch?(target_ref)
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end
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def downstream_project
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strong_memoize(:downstream_project) do
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@bridge.downstream_project
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end
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end
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def has_cyclic_dependency?
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return false if @bridge.triggers_child_pipeline?
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if Feature.enabled?(:ci_drop_cyclical_triggered_pipelines, @bridge.project, default_enabled: :yaml)
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checksums = @bridge.pipeline.base_and_ancestors.map { |pipeline| config_checksum(pipeline) }
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checksums.uniq.length != checksums.length
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end
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end
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def has_max_descendants_depth?
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return false unless @bridge.triggers_child_pipeline?
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ancestors_of_new_child = @bridge.pipeline.base_and_ancestors(same_project: true)
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ancestors_of_new_child.count > MAX_DESCENDANTS_DEPTH
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end
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def config_checksum(pipeline)
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[pipeline.project_id, pipeline.ref].hash
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end
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end
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end
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