openethereum/ethcore/src/trace/config.rs
2016-06-20 13:42:04 +03:00

67 lines
1.7 KiB
Rust

// 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/>.
//! Traces config.
use bloomchain::Config as BloomConfig;
use trace::Error;
/// 3-value enum.
#[derive(Debug, Clone, Copy, PartialEq)]
pub enum Switch {
/// True.
On,
/// False.
Off,
/// Auto.
Auto,
}
impl Switch {
/// Tries to turn old switch to new value.
pub fn turn_to(&self, to: Switch) -> Result<bool, Error> {
match (*self, to) {
(Switch::On, Switch::On) | (Switch::On, Switch::Auto) | (Switch::Auto, Switch::On) => Ok(true),
(Switch::Off, Switch::On) => Err(Error::ResyncRequired),
_ => Ok(false),
}
}
}
/// Traces config.
#[derive(Debug, Clone)]
pub struct Config {
/// Indicates if tracing should be enabled or not.
/// If it's None, it will be automatically configured.
pub enabled: Switch,
/// Traces blooms configuration.
pub blooms: BloomConfig,
/// Database cache-size if not default
pub db_cache_size: Option<usize>,
}
impl Default for Config {
fn default() -> Self {
Config {
enabled: Switch::Auto,
blooms: BloomConfig {
levels: 3,
elements_per_index: 16,
},
db_cache_size: None,
}
}
}