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// Copyright 2017 Parity Technologies (UK) Ltd.
// This file is part of Polkadot.
// Polkadot 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.
// Polkadot 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 Polkadot. If not, see <http://www.gnu.org/licenses/>.
extern crate clap;
extern crate env_logger;
extern crate log;
use clap::{Arg, App, SubCommand};
pub fn main() {
let matches = App::new("Polkadot")
.arg(Arg::with_name("log")
.short("l")
.value_name("LOG")
.help("Sets logging.")
.takes_value(true))
.subcommand(SubCommand::with_name("collator"))
.subcommand(SubCommand::with_name("validator"))
.get_matches();
let log_pattern = matches.value_of("log").unwrap_or("");
init_logger(log_pattern);
if let Some(_) = matches.subcommand_matches("collator") {
println!("Running collator.");
return;
}
if let Some(_) = matches.subcommand_matches("validator") {
println!("Running collator.");
return;
}
}
fn init_logger(pattern: &str) {
let mut builder = env_logger::LogBuilder::new();
// Disable info logging by default for some modules:
builder.filter(Some("hyper"), log::LogLevelFilter::Warn);
// Enable info for others.
builder.filter(None, log::LogLevelFilter::Info);
if let Ok(lvl) = std::env::var("RUST_LOG") {
builder.parse(&lvl);
}
builder.parse(pattern);
builder.init().expect("Logger initialized only once.");
}