Files
pezkuwi-subxt/substrate/bin/node/cli/src/browser.rs
T
2020-04-20 14:45:13 +02:00

55 lines
2.0 KiB
Rust

// 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/>.
use crate::chain_spec::ChainSpec;
use log::info;
use wasm_bindgen::prelude::*;
use browser_utils::{
Client,
browser_configuration, set_console_error_panic_hook, init_console_log,
};
use std::str::FromStr;
/// Starts the client.
#[wasm_bindgen]
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, log_level: String) -> Result<Client, Box<dyn std::error::Error>> {
set_console_error_panic_hook();
init_console_log(log::Level::from_str(&log_level)?)?;
let chain_spec = ChainSpec::from_json_bytes(chain_spec.as_bytes().to_vec())
.map_err(|e| format!("{:?}", e))?;
let config = browser_configuration(chain_spec).await?;
info!("Substrate browser node");
info!("✌️ version {}", config.impl_version);
info!("❤️ by Parity Technologies, 2017-2020");
info!("📋 Chain specification: {}", config.chain_spec.name());
info!("🏷 Node name: {}", config.network.node_name);
info!("👤 Role: {:?}", config.role);
// Create the service. This is the most heavy initialization step.
let service = crate::service::new_light(config)
.map_err(|e| format!("{:?}", e))?;
Ok(browser_utils::start_client(service))
}