/*

Copyright 2023 Supercomputing Systems AG

Licensed under the Apache License, Version 2.0 (the "License");

you may not use this file except in compliance with the License.

You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software

distributed under the License is distributed on an "AS IS" BASIS,

WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

See the License for the specific language governing permissions and

limitations under the License.

*/

//! Example that shows how to detect a runtime update and afterwards update the metadata.

// To test this example with CI we run it against the Polkadot Rococo node. Remember to switch the Config to match your

// own runtime if it uses different parameter configurations. Several rre-compiled runtimes are available in the ac-primitives crate.

use core::{

sync::atomic::{AtomicBool, Ordering},

time::Duration,

};

use sp_keyring::Sr25519Keyring;

use sp_weights::Weight;

use std::{sync::Arc, thread};

use substrate_api_client::{

Api, SubmitAndWatch, SubscribeEvents, XtStatus,

ac_compose_macros::{compose_call, compose_extrinsic},

ac_primitives::{Config, RococoRuntimeConfig},

api_client::UpdateRuntime,

rpc::TungsteniteRpcClient,

rpc_api::RuntimeUpdateDetector,

};

type Hash = <RococoRuntimeConfig as Config>::Hash;

fn main() {

env_logger::init();

// Initialize the api.

let client = TungsteniteRpcClient::with_default_url(1);

let mut api = Api::<RococoRuntimeConfig, _>::new(client).unwrap();

let sudoer = Sr25519Keyring::Alice.pair();

api.set_signer(sudoer.into());

let subscription = api.subscribe_events().unwrap();

let cancellation = Arc::new(AtomicBool::new(false));

let mut update_detector: RuntimeUpdateDetector<Hash, TungsteniteRpcClient> =

RuntimeUpdateDetector::new_with_cancellation(subscription, cancellation.clone());

println!("Current spec_version: {}", api.spec_version());

let handler = thread::spawn(move || {

// Wait for potential runtime update events

let runtime_update_detected = update_detector.detect_runtime_update().unwrap();

println!("Detected runtime update: {runtime_update_detected}");

assert!(runtime_update_detected);

});

// Execute an actual runtime update

{

send_code_update_extrinsic(&api);

}

// Sleep for some time in order to wait for a runtime update

// If no update happens we cancel the wait

{

thread::sleep(Duration::from_secs(1));

cancellation.store(true, Ordering::SeqCst);

}

handler.join().unwrap();

api.update_runtime().unwrap();

println!("New spec_version: {}", api.spec_version());

assert!(api.spec_version() == 111111111);

}

pub fn send_code_update_extrinsic(

api: &substrate_api_client::Api<RococoRuntimeConfig, TungsteniteRpcClient>,

) {

let new_wasm: &[u8] = include_bytes!("minimal_template_runtime.compact.compressed.wasm");

// Create a sudo `set_code` call.

let call = compose_call!(api.metadata(), "System", "set_code", new_wasm.to_vec()).unwrap();

let weight: Weight = 0.into();

let xt = compose_extrinsic!(&api, "Sudo", "sudo_unchecked_weight", call, weight).unwrap();

println!("Sending extrinsic to trigger runtime update");

let block_hash = api

.submit_and_watch_extrinsic_until(xt, XtStatus::InBlock)

.unwrap()

.block_hash

.unwrap();

println!("[+] Extrinsic got included. Block Hash: {block_hash:?}");

}