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# frozen_string_literal: true
module MergeRequests
# PostMergeService class
#
# Mark existing merge request as merged
# and execute all hooks and notifications
#
class PostMergeService < MergeRequests::BaseService
include RemovesRefs
MAX_RETARGET_MERGE_REQUESTS = 4
def execute(merge_request)
merge_request.mark_as_merged
close_issues(merge_request)
todo_service.merge_merge_request(merge_request, current_user)
create_event(merge_request)
create_note(merge_request)
merge_request_activity_counter.track_merge_mr_action(user: current_user)
notification_service.merge_mr(merge_request, current_user)
execute_hooks(merge_request, 'merge')
retarget_chain_merge_requests(merge_request)
invalidate_cache_counts(merge_request, users: merge_request.assignees | merge_request.reviewers)
merge_request.update_project_counter_caches
delete_non_latest_diffs(merge_request)
cancel_review_app_jobs!(merge_request)
cleanup_environments(merge_request)
cleanup_refs(merge_request)
end
private
def retarget_chain_merge_requests(merge_request)
return unless Feature.enabled?(:retarget_merge_requests, merge_request.target_project)
# we can only retarget MRs that are targeting the same project
# and have a remove source branch set
return unless merge_request.for_same_project? && merge_request.remove_source_branch?
# find another merge requests that
# - as a target have a current source project and branch
other_merge_requests = merge_request.source_project
.merge_requests
.opened
.by_target_branch(merge_request.source_branch)
.preload_source_project
.at_most(MAX_RETARGET_MERGE_REQUESTS)
other_merge_requests.find_each do |other_merge_request|
# Update only MRs on projects that we have access to
next unless can?(current_user, :update_merge_request, other_merge_request.source_project)
::MergeRequests::UpdateService
.new(other_merge_request.source_project, current_user,
target_branch: merge_request.target_branch,
target_branch_was_deleted: true)
.execute(other_merge_request)
end
end
def close_issues(merge_request)
return unless merge_request.target_branch == project.default_branch
closed_issues = merge_request.visible_closing_issues_for(current_user)
closed_issues.each do |issue|
Issues::CloseService.new(project, current_user).execute(issue, commit: merge_request)
end
end
def delete_non_latest_diffs(merge_request)
DeleteNonLatestDiffsService.new(merge_request).execute
end
def create_merge_event(merge_request, current_user)
EventCreateService.new.merge_mr(merge_request, current_user)
end
def create_event(merge_request)
# Making sure MergeRequest::Metrics updates are in sync with
# Event creation.
Event.transaction do
merge_event = create_merge_event(merge_request, current_user)
merge_request_metrics_service(merge_request).merge(merge_event)
end
end
end
end
MergeRequests::PostMergeService.prepend_if_ee('EE::MergeRequests::PostMergeService')
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