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# frozen_string_literal: true
module MergeRequests
# MergeService class
#
# Do git merge and in case of success
# mark merge request as merged and execute all hooks and notifications
# Executed when you do merge via GitLab UI
#
class MergeService < MergeRequests::MergeBaseService
delegate :merge_jid, :state, to: :@merge_request
def execute(merge_request)
if project.merge_requests_ff_only_enabled && !self.is_a?(FfMergeService)
FfMergeService.new(project, current_user, params).execute(merge_request)
return
end
@merge_request = merge_request
validate!
merge_request.in_locked_state do
if commit
after_merge
clean_merge_jid
success
end
end
log_info("Merge process finished on JID #{merge_jid} with state #{state}")
rescue MergeError => e
handle_merge_error(log_message: e.message, save_message_on_model: true)
end
private
def validate!
authorization_check!
error_check!
updated_check!
end
def authorization_check!
unless @merge_request.can_be_merged_by?(current_user)
raise_error('You are not allowed to merge this merge request')
end
end
def error_check!
super
check_source
error =
if @merge_request.should_be_rebased?
'Only fast-forward merge is allowed for your project. Please update your source branch'
elsif !@merge_request.mergeable?
'Merge request is not mergeable'
end
raise_error(error) if error
end
def updated_check!
unless source_matches?
raise_error('Branch has been updated since the merge was requested. '\
'Please review the changes.')
end
end
def commit
log_info("Git merge started on JID #{merge_jid}")
commit_id = try_merge
if commit_id
log_info("Git merge finished on JID #{merge_jid} commit #{commit_id}")
else
raise_error('Conflicts detected during merge')
end
merge_request.update!(merge_commit_sha: commit_id)
ensure
merge_request.update_column(:in_progress_merge_commit_sha, nil)
end
def try_merge
repository.merge(current_user, source, merge_request, commit_message)
rescue Gitlab::Git::PreReceiveError => e
raise MergeError,
"Something went wrong during merge pre-receive hook. #{e.message}".strip
rescue => e
handle_merge_error(log_message: e.message)
raise_error('Something went wrong during merge')
end
def after_merge
log_info("Post merge started on JID #{merge_jid} with state #{state}")
MergeRequests::PostMergeService.new(project, current_user).execute(merge_request)
log_info("Post merge finished on JID #{merge_jid} with state #{state}")
if delete_source_branch?
::Branches::DeleteService.new(@merge_request.source_project, branch_deletion_user)
.execute(merge_request.source_branch)
end
end
def clean_merge_jid
merge_request.update_column(:merge_jid, nil)
end
def branch_deletion_user
@merge_request.force_remove_source_branch? ? @merge_request.author : current_user
end
# Verify again that the source branch can be removed, since branch may be protected,
# or the source branch may have been updated, or the user may not have permission
#
def delete_source_branch?
params.fetch('should_remove_source_branch', @merge_request.force_remove_source_branch?) &&
@merge_request.can_remove_source_branch?(branch_deletion_user)
end
def handle_merge_error(log_message:, save_message_on_model: false)
Gitlab::AppLogger.error("MergeService ERROR: #{merge_request_info} - #{log_message}")
@merge_request.update(merge_error: log_message) if save_message_on_model
end
def log_info(message)
@logger ||= Gitlab::AppLogger
@logger.info("#{merge_request_info} - #{message}")
end
def merge_request_info
merge_request.to_reference(full: true)
end
def source_matches?
# params-keys are symbols coming from the controller, but when they get
# loaded from the database they're strings
params.with_indifferent_access[:sha] == merge_request.diff_head_sha
end
end
end
|
