fix: offchain workers are enabled

Cargo.toml

@@ -126,6 +126,7 @@ sc-sysinfo = { git = "https://github.com/paritytech/substrate.git", branch = "po
 sc-telemetry = { git = "https://github.com/paritytech/substrate.git", branch = "polkadot-v1.0.0", default-features = false }
 sc-transaction-pool = { git = "https://github.com/paritytech/substrate.git", branch = "polkadot-v1.0.0", default-features = false }
 sc-transaction-pool-api = { git = "https://github.com/paritytech/substrate", branch = "polkadot-v1.0.0", default-features = false }
+sc-offchain = { git = "https://github.com/paritytech/substrate", branch = "polkadot-v1.0.0", default-features = false }
 sp-api = { git = "https://github.com/paritytech/substrate.git", branch = "polkadot-v1.0.0", default-features = false }
 sp-arithmetic = { git = "https://github.com/paritytech/substrate.git", branch = "polkadot-v1.0.0", default-features = false }
 sp-authority-discovery = { git = "https://github.com/paritytech/substrate.git", branch = "polkadot-v1.0.0", default-features = false }

node/service/Cargo.toml

@@ -36,6 +36,7 @@ sc-sysinfo = { workspace = true }
 sc-telemetry = { workspace = true }
 sc-transaction-pool = { workspace = true }
 sc-transaction-pool-api = { workspace = true }
+sc-offchain = { workspace = true }
 sp-api = { workspace = true }
 sp-authority-discovery = { workspace = true }
 sp-blockchain = { workspace = true }

node/service/src/lib.rs

@@ -10,7 +10,7 @@ pub use cere_dev_runtime;
 #[cfg(feature = "cere-native")]
 pub use cere_runtime;
 use futures::prelude::*;
-use sc_client_api::BlockBackend;
+use sc_client_api::{Backend, BlockBackend};
 use sc_consensus_babe::{self, SlotProportion};
 pub use sc_executor::NativeExecutionDispatch;
 use sc_network::{Event, NetworkEventStream};
@@ -399,6 +399,27 @@ where
 			warp_sync_params: Some(WarpSyncParams::WithProvider(warp_sync)),
 		})?;
 
+	if config.offchain_worker.enabled {
+		task_manager.spawn_handle().spawn(
+			"offchain-workers-runner",
+			"offchain-worker",
+			sc_offchain::OffchainWorkers::new(sc_offchain::OffchainWorkerOptions {
+				runtime_api_provider: client.clone(),
+				is_validator: config.role.is_authority(),
+				keystore: Some(keystore_container.keystore()),
+				offchain_db: backend.offchain_storage(),
+				transaction_pool: Some(OffchainTransactionPoolFactory::new(
+					transaction_pool.clone(),
+				)),
+				network_provider: network.clone(),
+				enable_http_requests: true,
+				custom_extensions: |_| vec![],
+			})
+			.run(client.clone(), task_manager.spawn_handle())
+			.boxed(),
+		);
+	}
+
 	let role = config.role.clone();
 	let force_authoring = config.force_authoring;
 	let backoff_authoring_blocks =