feat: initialize Kurdistan SDK - independent fork of Polkadot SDK

pezkuwi/xcm/xcm-builder/src/transactional.rs

@@ -0,0 +1,43 @@
+// Copyright 2021 Parity Technologies (UK) Ltd.
+// This file is part of Pezkuwi.
+
+// Pezkuwi is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Pezkuwi is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Pezkuwi.  If not, see <http://www.gnu.org/licenses/>.
+
+use frame_support::storage::{with_transaction, TransactionOutcome};
+use sp_runtime::DispatchError;
+use xcm::latest::prelude::*;
+use xcm_executor::traits::ProcessTransaction;
+
+/// Transactional processor implementation using frame transactional layers.
+pub struct FrameTransactionalProcessor;
+impl ProcessTransaction for FrameTransactionalProcessor {
+	const IS_TRANSACTIONAL: bool = true;
+
+	fn process<F>(f: F) -> Result<(), XcmError>
+	where
+		F: FnOnce() -> Result<(), XcmError>,
+	{
+		with_transaction(|| -> TransactionOutcome<Result<_, DispatchError>> {
+			let output = f();
+			match &output {
+				Ok(()) => TransactionOutcome::Commit(Ok(output)),
+				_ => TransactionOutcome::Rollback(Ok(output)),
+			}
+		})
+		.map_err(|error| {
+			tracing::debug!(target: "xcm::transactional", ?error, "Failed to process XCM transaction");
+			XcmError::ExceedsStackLimit
+		})?
+	}
+}