openethereum/parity/boot.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/>.
//! Parity micro-service helpers
use nanoipc;
use ipc;
use std;
use std::sync::Arc;
use hypervisor::HypervisorServiceClient;
use hypervisor::service::IpcModuleId;
use ctrlc::CtrlC;
use std::sync::atomic::{AtomicBool, Ordering};
use nanoipc::{IpcInterface, GuardedSocket, NanoSocket};
use ipc::WithSocket;
use ethcore_logger::{Config as LogConfig, setup_log};
use docopt::Docopt;
#[derive(Debug)]
pub enum BootError {
ReadArgs(std::io::Error),
DecodeArgs(ipc::binary::BinaryError),
DependencyConnect(nanoipc::SocketError),
}
pub fn host_service<T: ?Sized + Send + Sync + 'static>(addr: &str, stop_guard: Arc<AtomicBool>, service: Arc<T>) where T: IpcInterface {
let socket_url = addr.to_owned();
std::thread::spawn(move || {
let mut worker = nanoipc::Worker::<T>::new(&service);
worker.add_reqrep(&socket_url).unwrap();
while !stop_guard.load(Ordering::Relaxed) {
worker.poll();
}
});
}
pub fn payload<B: ipc::BinaryConvertable>() -> Result<B, BootError> {
use std::io;
use std::io::Read;
let mut buffer = Vec::new();
try!(
io::stdin().read_to_end(&mut buffer)
.map_err(|io_err| BootError::ReadArgs(io_err))
);
ipc::binary::deserialize::<B>(&buffer)
.map_err(|binary_error| BootError::DecodeArgs(binary_error))
}
pub fn register(hv_url: &str, module_id: IpcModuleId) -> GuardedSocket<HypervisorServiceClient<NanoSocket>>{
let hypervisor_client = nanoipc::init_client::<HypervisorServiceClient<_>>(hv_url).unwrap();
hypervisor_client.handshake().unwrap();
hypervisor_client.module_ready(module_id);
hypervisor_client
}
pub fn dependency<C: WithSocket<NanoSocket>>(url: &str)
-> Result<GuardedSocket<C>, BootError>
{
nanoipc::init_client::<C>(url).map_err(|socket_err| BootError::DependencyConnect(socket_err))
}
pub fn main_thread() -> Arc<AtomicBool> {
let stop = Arc::new(AtomicBool::new(false));
let ctrc_stop = stop.clone();
CtrlC::set_handler(move || {
ctrc_stop.store(true, Ordering::Relaxed);
});
stop
}
pub fn setup_cli_logger(svc_name: &str) {
let usage = format!("
Ethcore {} service
Usage:
parity {} [options]
Options:
-l --logging LOGGING Specify the logging level. Must conform to the same
format as RUST_LOG.
--log-file FILENAME Specify a filename into which logging should be
directed.
--no-color Don't use terminal color codes in output.
", svc_name, svc_name);
#[derive(Debug, RustcDecodable)]
struct Args {
flag_logging: Option<String>,
flag_log_file: Option<String>,
flag_no_color: bool,
}
impl Args {
pub fn log_settings(&self) -> LogConfig {
LogConfig {
color: self.flag_no_color || cfg!(windows),
mode: self.flag_logging.clone(),
file: self.flag_log_file.clone(),
}
}
}
let args: Args = Docopt::new(usage)
.and_then(|d| d.decode())
.unwrap_or_else(|e| e.exit());
setup_log(&args.log_settings()).expect("Log initialization failure");
}