debian-mirror-gitlab/app/services/merge_requests/create_from_issue_service.rb

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# frozen_string_literal: true
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module MergeRequests
class CreateFromIssueService < MergeRequests::CreateService
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# TODO: This constructor does not use the "params:" argument from the superclass,
# but instead has a custom "mr_params:" argument. This is because historically,
# prior to named arguments being introduced to the constructor, it never passed
# along the third positional argument when calling `super`.
# This should be changed, in order to be consistent (all subclasses should pass
# along all of the arguments to the superclass, otherwise it is probably not an
# "is a" relationship). However, we need to be sure that passing the params
# argument to `super` (especially target_project_id) will not cause any unexpected
# behavior in the superclass. Since the addition of the named arguments is
# intended to be a low-risk pure refactor, we will defer this fix
# to this follow-on issue:
# https://gitlab.com/gitlab-org/gitlab/-/issues/328726
def initialize(project:, current_user:, mr_params: {})
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# branch - the name of new branch
# ref - the source of new branch.
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@branch_name = mr_params[:branch_name]
@issue_iid = mr_params[:issue_iid]
@ref = mr_params[:ref]
@target_project_id = mr_params[:target_project_id]
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super(project: project, current_user: current_user)
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end
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def execute
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return error('Project not found') if target_project.blank?
return error('Not allowed to create merge request') unless can_create_merge_request?
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return error('Invalid issue iid') unless @issue_iid.present? && issue.present?
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result = ::Branches::CreateService.new(target_project, current_user).execute(branch_name, ref)
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return result if result[:status] == :error
new_merge_request = create(merge_request)
if new_merge_request.valid?
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merge_request_activity_counter.track_mr_create_from_issue(user: current_user)
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SystemNoteService.new_merge_request(issue, project, current_user, new_merge_request)
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success(new_merge_request)
else
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SystemNoteService.new_issue_branch(issue, project, current_user, branch_name, branch_project: target_project)
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error(new_merge_request.errors)
end
end
private
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def can_create_merge_request?
can?(current_user, :create_merge_request_from, target_project)
end
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# rubocop: disable CodeReuse/ActiveRecord
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def issue
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@issue ||= IssuesFinder.new(current_user, project_id: project.id).find_by(iid: @issue_iid)
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end
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# rubocop: enable CodeReuse/ActiveRecord
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def branch_name
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@branch ||= @branch_name || issue.to_branch_name
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end
def ref
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if valid_ref?
@ref
else
default_branch
end
end
def valid_ref?
ref_is_branch? || ref_is_tag?
end
def ref_is_branch?
target_project.repository.branch_exists?(@ref)
end
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def ref_is_tag?
target_project.repository.tag_exists?(@ref)
end
def default_branch
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target_project.default_branch_or_main
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end
def merge_request
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MergeRequests::BuildService.new(project: target_project, current_user: current_user, params: merge_request_params).execute
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end
def merge_request_params
{
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issue_iid: @issue_iid,
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source_project_id: target_project.id,
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source_branch: branch_name,
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target_project_id: target_project.id,
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target_branch: target_branch,
assignee_ids: [current_user.id]
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}
end
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def target_branch
if ref_is_branch?
@ref
else
default_branch
end
end
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def success(merge_request)
super().merge(merge_request: merge_request)
end
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def target_project
@target_project ||=
if @target_project_id.present?
project.forks.find_by_id(@target_project_id)
else
project
end
end
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end
end