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module Commits
class ChangeService < ::BaseService
class ValidationError < StandardError; end
class ChangeError < StandardError; end
def execute
@source_project = params[:source_project] || @project
@target_branch = params[:target_branch]
@commit = params[:commit]
@create_merge_request = params[:create_merge_request].present?
check_push_permissions unless @create_merge_request
commit
rescue Repository::CommitError, Gitlab::Git::Repository::InvalidBlobName, GitHooksService::PreReceiveError,
ValidationError, ChangeError => ex
error(ex.message)
end
private
def commit
raise NotImplementedError
end
def commit_change(action)
raise NotImplementedError unless repository.respond_to?(action)
into = @create_merge_request ? @commit.public_send("#{action}_branch_name") : @target_branch
tree_id = repository.public_send("check_#{action}_content", @commit, @target_branch)
if tree_id
create_target_branch(into) if @create_merge_request
repository.public_send(action, current_user, @commit, into, tree_id)
success
else
error_msg = "Sorry, we cannot #{action.to_s.dasherize} this #{@commit.change_type_title} automatically.
It may have already been #{action.to_s.dasherize}, or a more recent commit may have updated some of its content."
raise ChangeError, error_msg
end
end
def check_push_permissions
allowed = ::Gitlab::UserAccess.new(current_user, project: project).can_push_to_branch?(@target_branch)
unless allowed
raise ValidationError.new('You are not allowed to push into this branch')
end
true
end
def create_target_branch(new_branch)
# Temporary branch exists and contains the change commit
return success if repository.find_branch(new_branch)
result = CreateBranchService.new(@project, current_user)
.execute(new_branch, @target_branch, source_project: @source_project, with_hooks: false)
if result[:status] == :error
raise ChangeError, "There was an error creating the source branch: #{result[:message]}"
end
end
end
end
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