openethereum/parity/setup_log.rs

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// Copyright 2015, 2016 Ethcore (UK) Ltd.
// This file is part of Parity.
// Parity 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.
// Parity 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 Parity. If not, see <http://www.gnu.org/licenses/>.
use std::env;
use std::sync::Arc;
use time;
use env_logger::LogBuilder;
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use util::RotatingLogger;
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/// Sets up the logger
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pub fn setup_log(init: &Option<String>, enable_color: bool) -> Arc<RotatingLogger> {
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use rlog::*;
let mut levels = String::new();
let mut builder = LogBuilder::new();
// Disable ws info logging by default.
builder.filter(Some("ws"), LogLevelFilter::Warn);
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builder.filter(None, LogLevelFilter::Info);
if env::var("RUST_LOG").is_ok() {
let lvl = &env::var("RUST_LOG").unwrap();
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levels.push_str(lvl);
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levels.push_str(",");
builder.parse(lvl);
}
if let Some(ref s) = *init {
levels.push_str(s);
builder.parse(s);
}
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let logs = Arc::new(RotatingLogger::new(levels, enable_color));
let logger = logs.clone();
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let format = move |record: &LogRecord| {
let timestamp = time::strftime("%Y-%m-%d %H:%M:%S %Z", &time::now()).unwrap();
let format = if max_log_level() <= LogLevelFilter::Info {
format!("{}{}", timestamp, record.args())
} else {
format!("{}{}:{}: {}", timestamp, record.level(), record.target(), record.args())
};
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logger.append(format.clone());
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format
};
builder.format(format);
builder.init().unwrap();
logs
}