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Working light-client + WASM

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Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>
This commit is contained in:
Alexandru Vasile
2023-06-16 18:17:31 +03:00
parent 600a5cd14c
commit 2765087ff9
12 changed files with 2179 additions and 655 deletions
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testing/wasm-tests/tests/wasm.rs
+47 -2
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@@ -5,6 +5,11 @@ use subxt::rpc::LightClient;
use wasm_bindgen_test::*;
use std::sync::Arc;
use subxt::rpc::Subscription;
use subxt::rpc::RpcClientT;
use subxt::OnlineClient;
use futures_util::StreamExt;
wasm_bindgen_test::wasm_bindgen_test_configure!(run_in_browser);
/// Run the tests by `$ wasm-pack test --firefox --headless`
@@ -28,8 +33,48 @@ async fn wasm_ws_transport_works() {
async fn light_client_transport_works() {
init_tracing();
// let light_client = LightClient::new(include_str!("../../../artifacts/dev_spec.json")).unwrap();
// let client = subxt::client::OnlineClient::<PolkadotConfig>::from_rpc_client(Arc::new(light_client)).await.unwrap();
let light_client = LightClient::new(include_str!("../../../artifacts/dev_spec.json")).unwrap();
let api = OnlineClient::<PolkadotConfig>::from_rpc_client(Arc::new(light_client)).await.unwrap();
// Subscribe to the latest 3 finalized blocks.
{
tracing::info!("Subscribe to latest finalized blocks: ");
let mut blocks_sub = api.blocks().subscribe_finalized().await.expect("Cannot subscribe to finalized hashes").take(3);
// For each block, print a bunch of information about it:
while let Some(block) = blocks_sub.next().await {
let block = block.expect("Block not valid");
let block_number = block.header().number;
let block_hash = block.hash();
tracing::info!("Block #{block_number}:");
tracing::info!(" Hash: {block_hash}");
}
}
// Ensure light-client functions with subscriptions.
// let sub = light_client
// .subscribe_raw("chain_subscribeAllHeads", None, "chain_unsubscribeAllHeads")
// .await
// .unwrap();
// The subscription result is actually a PolkadotConfig::Header, we are interested in iteration.
// let mut sub: Subscription<String> = Subscription::new(sub);
// let block = sub
// .next()
// .await
// .expect("Subscription failed")
// .expect("Subscription ended");
// tracing::warn!("Block hash {:?}", block);
// let block = sub
// .next()
// .await
// .expect("Subscription failed")
// .expect("Subscription ended");
// tracing::warn!("Block hash {:?}", block);
// let chain = client.rpc().system_chain().await.unwrap();
// assert_eq!(&chain, "Development");