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