Pov recovery for parachains (#445)

* Start with a failing integration test & some refactorings * More work * Make it "work" * Add `NullConsensus` for the test * More refactorings * Move stuff over to its own crate * Refactorings * Integrate it into `service` and make the test working * Docs and some exit condition * Use the real import queue * Fix tests * Update client/pov-recovery/src/active_candidate_recovery.rs Co-authored-by: Bernhard Schuster <bernhard@ahoi.io> * Fetch slot duration from the relay chain * Docs * Fixes Co-authored-by: Bernhard Schuster <bernhard@ahoi.io>
2026-05-30 07:01:03 +00:00 · 2021-05-26 15:02:42 +02:00
parent 36c6da180a
commit 7ffb205b0d
21 changed files with 2098 additions and 1198 deletions
@@ -0,0 +1,95 @@
+// Copyright 2021 Parity Technologies (UK) Ltd.
+// This file is part of Substrate.
+
+// Substrate 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.
+
+// Substrate 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 Substrate.  If not, see <http://www.gnu.org/licenses/>.
+
+use cumulus_primitives_core::ParaId;
+use cumulus_test_service::{initial_head_data, Keyring::*};
+use futures::join;
+use sc_service::TaskExecutor;
+use std::sync::Arc;
+
+/// Tests the PoV recovery.
+///
+/// If there is a block of the parachain included/backed by the relay chain that isn't circulated in
+/// the parachain network, we need to recover the PoV from the relay chain. Using this PoV we can
+/// recover the block, import it and share it with the other nodes of the parachain network.
+#[substrate_test_utils::test]
+async fn pov_recovery(task_executor: TaskExecutor) {
+	let mut builder = sc_cli::LoggerBuilder::new("");
+	builder.with_colors(false);
+	let _ = builder.init();
+
+	let para_id = ParaId::from(100);
+
+	// Start alice
+	let alice = cumulus_test_service::run_relay_chain_validator_node(
+		task_executor.clone(),
+		Alice,
+		|| {},
+		vec![],
+	);
+
+	// Start bob
+	let bob = cumulus_test_service::run_relay_chain_validator_node(
+		task_executor.clone(),
+		Bob,
+		|| {},
+		vec![alice.addr.clone()],
+	);
+
+	// Register parachain
+	alice
+		.register_parachain(
+			para_id,
+			cumulus_test_service::runtime::WASM_BINARY
+				.expect("You need to build the WASM binary to run this test!")
+				.to_vec(),
+			initial_head_data(para_id),
+		)
+		.await
+		.unwrap();
+
+	// Run charlie as parachain collator
+	let charlie =
+		cumulus_test_service::TestNodeBuilder::new(para_id, task_executor.clone(), Charlie)
+			.enable_collator()
+			.connect_to_relay_chain_nodes(vec![&alice, &bob])
+			.wrap_announce_block(|_| {
+				// Never announce any block
+				Arc::new(|_, _| {})
+			})
+			.build()
+			.await;
+
+	// Run dave as parachain full node
+	//
+	// It will need to recover the pov blocks through availability recovery.
+	let dave = cumulus_test_service::TestNodeBuilder::new(para_id, task_executor, Dave)
+		.enable_collator()
+		.use_null_consensus()
+		.connect_to_parachain_node(&charlie)
+		.connect_to_relay_chain_nodes(vec![&alice, &bob])
+		.build()
+		.await;
+
+	dave.wait_for_blocks(7).await;
+
+	join!(
+		alice.task_manager.clean_shutdown(),
+		bob.task_manager.clean_shutdown(),
+		charlie.task_manager.clean_shutdown(),
+		dave.task_manager.clean_shutdown(),
+	);
+}