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Update and fix wasm code again, add cli check to .gitlab-ci.yml (#917)

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* Add cli to wasm tests, update and bring closer to the substrate browser code

* Remove ws.js

* Update cli/src/browser.rs

Co-Authored-By: Pierre Krieger <pierre.krieger1708@gmail.com>

* Update browser.rs

Co-authored-by: Gavin Wood <gavin@parity.io>
Co-authored-by: Pierre Krieger <pierre.krieger1708@gmail.com>
This commit is contained in:
Ashley
2020-03-21 16:13:59 +01:00
committed by GitHub
parent 1f7df4528f
commit fb442c9112
4 changed files with 21 additions and 176 deletions
Download Patch File Download Diff File Expand all files Collapse all files
polkadot/.gitlab-ci.yml
+1
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@@ -159,6 +159,7 @@ check-web-wasm: &test
- time cargo build --locked --target=wasm32-unknown-unknown --manifest-path primitives/Cargo.toml
- time cargo build --locked --target=wasm32-unknown-unknown --manifest-path rpc/Cargo.toml
- time cargo build --locked --target=wasm32-unknown-unknown --manifest-path statement-table/Cargo.toml
- time cargo build --locked --target=wasm32-unknown-unknown --manifest-path cli/Cargo.toml --no-default-features --features browser
- sccache -s
polkadot/cli/browser-demo/index.html
+4 -2
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@@ -6,7 +6,6 @@
<link rel="shortcut icon" href="/favicon.png" />
<script type="module">
import { start_client, default as init } from './pkg/polkadot_cli.js';
import ws from './ws.js';
function log(msg) {
document.getElementsByTagName('body')[0].innerHTML += msg + '\n';
@@ -16,10 +15,13 @@ async function start() {
log('Loading WASM');
await init('./pkg/polkadot_cli_bg.wasm');
log('Successfully loaded WASM');
log('Fetching chain spec');
const chain_spec_response = await fetch("https://raw.githubusercontent.com/paritytech/polkadot/master/service/res/westend.json");
const chain_spec_text = await chain_spec_response.text();
// Build our client.
log('Starting client');
let client = await start_client('westend', ws());
let client = await start_client(chain_spec_text, 'info');
log('Client started');
client.rpcSubscribe('{"method":"chain_subscribeNewHead","params":[],"id":1,"jsonrpc":"2.0"}',
polkadot/cli/browser-demo/ws.js
-148
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@@ -1,148 +0,0 @@
// Copyright 2019-2020 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/>.
export default () => {
return {
dial: dial,
listen_on: (addr) => {
let err = new Error("Listening on WebSockets is not possible from within a browser");
err.name = "NotSupportedError";
throw err;
},
};
}
/// Turns a string multiaddress into a WebSockets string URL.
// TODO: support dns addresses as well
const multiaddr_to_ws = (addr) => {
let parsed = addr.match(/^\/(ip4|ip6|dns4|dns6)\/(.*?)\/tcp\/(.*?)\/(ws|wss|x-parity-ws\/(.*)|x-parity-wss\/(.*))$/);
let proto = 'wss';
if (parsed[4] == 'ws' || parsed[4] == 'x-parity-ws') {
proto = 'ws';
}
let url = decodeURIComponent(parsed[5] || parsed[6] || '');
if (parsed != null) {
if (parsed[1] == 'ip6') {
return proto + "://[" + parsed[2] + "]:" + parsed[3] + url;
} else {
return proto + "://" + parsed[2] + ":" + parsed[3] + url;
}
}
let err = new Error("Address not supported: " + addr);
err.name = "NotSupportedError";
throw err;
}
// Attempt to dial a multiaddress.
const dial = (addr) => {
let ws = new WebSocket(multiaddr_to_ws(addr));
let reader = read_queue();
return new Promise((resolve, reject) => {
// TODO: handle ws.onerror properly after dialing has happened
ws.onerror = (ev) => reject(ev);
ws.onmessage = (ev) => reader.inject_blob(ev.data);
ws.onclose = () => reader.inject_eof();
ws.onopen = () => resolve({
read: (function*() { while(ws.readyState == 1) { yield reader.next(); } })(),
write: (data) => {
if (ws.readyState == 1) {
ws.send(data);
return promise_when_ws_finished(ws);
} else {
return Promise.reject("WebSocket is closed");
}
},
shutdown: () => {},
close: () => ws.close()
});
});
}
// Takes a WebSocket object and returns a Promise that resolves when bufferedAmount is 0.
const promise_when_ws_finished = (ws) => {
if (ws.bufferedAmount == 0) {
return Promise.resolve();
}
return new Promise((resolve, reject) => {
setTimeout(function check() {
if (ws.bufferedAmount == 0) {
resolve();
} else {
setTimeout(check, 100);
}
}, 2);
})
}
// Creates a queue reading system.
const read_queue = () => {
// State of the queue.
let state = {
// Array of promises resolving to `ArrayBuffer`s, that haven't been transmitted back with
// `next` yet.
queue: new Array(),
// If `resolve` isn't null, it is a "resolve" function of a promise that has already been
// returned by `next`. It should be called with some data.
resolve: null,
};
return {
// Inserts a new Blob in the queue.
inject_blob: (blob) => {
if (state.resolve != null) {
var resolve = state.resolve;
state.resolve = null;
var reader = new FileReader();
reader.addEventListener("loadend", () => resolve(reader.result));
reader.readAsArrayBuffer(blob);
} else {
state.queue.push(new Promise((resolve, reject) => {
var reader = new FileReader();
reader.addEventListener("loadend", () => resolve(reader.result));
reader.readAsArrayBuffer(blob);
}));
}
},
// Inserts an EOF message in the queue.
inject_eof: () => {
if (state.resolve != null) {
var resolve = state.resolve;
state.resolve = null;
resolve(null);
} else {
state.queue.push(Promise.resolve(null));
}
},
// Returns a Promise that yields the next entry as an ArrayBuffer.
next: () => {
if (state.queue.length != 0) {
return state.queue.shift(0);
} else {
if (state.resolve !== null)
throw "Internal error: already have a pending promise";
return new Promise((resolve, reject) => {
state.resolve = resolve;
});
}
}
};
};
polkadot/cli/src/browser.rs
+16 -26
View File
@@ -14,50 +14,40 @@
// You should have received a copy of the GNU General Public License
// along with Substrate. If not, see <http://www.gnu.org/licenses/>.
use crate::ChainSpec;
use log::info;
use wasm_bindgen::prelude::*;
use service::IsKusama;
use browser_utils::{
Client,
browser_configuration, set_console_error_panic_hook, init_console_log,
};
use std::str::FromStr;
/// Starts the client.
///
/// You must pass a libp2p transport that supports .
#[wasm_bindgen]
pub async fn start_client(chain_spec: String, wasm_ext: browser_utils::Transport) -> Result<browser_utils::Client, JsValue> {
start_inner(chain_spec, wasm_ext)
pub async fn start_client(chain_spec: String, log_level: String) -> Result<Client, JsValue> {
start_inner(chain_spec, log_level)
.await
.map_err(|err| JsValue::from_str(&err.to_string()))
}
async fn start_inner(chain_spec: String, wasm_ext: browser_utils::Transport) -> Result<browser_utils::Client, Box<dyn std::error::Error>> {
browser_utils::set_console_error_panic_hook();
browser_utils::init_console_log(log::Level::Info)?;
async fn start_inner(chain_spec: String, log_level: String) -> Result<Client, Box<dyn std::error::Error>> {
set_console_error_panic_hook();
init_console_log(log_level.parse()?)?;
let chain_spec = ChainSpec::from(&chain_spec)
.ok_or_else(|| format!("Chain spec: {:?} doesn't exist.", chain_spec))?
.load()
let chain_spec = service::PolkadotChainSpec::from_json_bytes(chain_spec.as_bytes().to_vec())
.map_err(|e| format!("{:?}", e))?;
let config = browser_utils::browser_configuration(wasm_ext, chain_spec)
.await?;
let config = browser_configuration(chain_spec).await?;
info!("Polkadot browser node");
info!(" version {}", config.full_version());
info!(" by Parity Technologies, 2017-2019");
if let Some(chain_spec) = &config.chain_spec {
info!("Chain specification: {}", chain_spec.name());
if chain_spec.is_kusama() {
info!("----------------------------");
info!("This chain is not in any way");
info!(" endorsed by the ");
info!(" KUSAMA FOUNDATION ");
info!("----------------------------");
}
}
info!(" by Parity Technologies, 2017-2020");
info!("Chain specification: {}", config.expect_chain_spec().name());
info!("Node name: {}", config.name);
info!("Roles: {:?}", config.roles);
// Create the service. This is the most heavy initialization step.
let service = service::kusama_new_light(config).map_err(|e| format!("{:?}", e))?;
let service = service::kusama_new_light(config)
.map_err(|e| format!("{:?}", e))?;
Ok(browser_utils::start_client(service))
}