gitlab-org--gitlab-foss/app/services/commits/create_service.rb
Bob Van Landuyt 6fbdc5ed52 Apply patches when creating MR via email
This allows users to add patches as attachments to merge request
created via email.

When an email to create a merge request is sent, all the attachments
ending in `.patch` will be applied to the branch specified in the
subject of the email. If the branch did not exist, it will be created
from the HEAD of the repository.

When the patches could not be applied, the error message will be
replied to the user.

The patches can have a maximum combined size of 2MB for now.
2018-11-07 16:27:55 +01:00

81 lines
2.1 KiB
Ruby

# frozen_string_literal: true
module Commits
class CreateService < ::BaseService
ValidationError = Class.new(StandardError)
ChangeError = Class.new(StandardError)
def initialize(*args)
super
@start_project = params[:start_project] || @project
@start_branch = params[:start_branch]
@branch_name = params[:branch_name]
end
def execute
validate!
new_commit = create_commit!
success(result: new_commit)
rescue ValidationError,
ChangeError,
Gitlab::Git::Index::IndexError,
Gitlab::Git::CommitError,
Gitlab::Git::PreReceiveError,
Gitlab::Git::CommandError => ex
error(ex.message)
end
private
def create_commit!
raise NotImplementedError
end
def raise_error(message)
raise ValidationError, message
end
def different_branch?
@start_branch != @branch_name || @start_project != @project
end
def validate!
validate_permissions!
validate_on_branch!
validate_branch_existance!
validate_new_branch_name! if different_branch?
end
def validate_permissions!
allowed = ::Gitlab::UserAccess.new(current_user, project: project).can_push_to_branch?(@branch_name)
unless allowed
raise_error("You are not allowed to push into this branch")
end
end
def validate_on_branch!
if !@start_project.empty_repo? && !@start_project.repository.branch_exists?(@start_branch)
raise_error('You can only create or edit files when you are on a branch')
end
end
def validate_branch_existance!
if !project.empty_repo? && different_branch? && repository.branch_exists?(@branch_name)
raise_error("A branch called '#{@branch_name}' already exists. Switch to that branch in order to make changes")
end
end
def validate_new_branch_name!
result = ValidateNewBranchService.new(project, current_user).execute(@branch_name)
if result[:status] == :error
raise_error("Something went wrong when we tried to create '#{@branch_name}' for you: #{result[:message]}")
end
end
end
end