openethereum/parity/hypervisor/service.rs.in
2016-04-14 21:50:35 +03:00

70 lines
2.2 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/>.
use std::sync::{RwLock,Arc};
use std::ops::*;
use ipc::IpcConfig;
use std::collections::HashMap;
pub type IpcModuleId = u64;
/// Blockhain database module id
pub const BLOCKCHAIN_MODULE_ID: IpcModuleId = 2000;
/// IPC service that handles module management
pub struct HypervisorService {
check_list: RwLock<HashMap<IpcModuleId, bool>>,
}
#[derive(Ipc)]
impl HypervisorService {
fn module_ready(&self, module_id: u64) -> bool {
let mut check_list = self.check_list.write().unwrap();
check_list.get_mut(&module_id).map(|mut status| *status = true);
check_list.iter().any(|(_, status)| !status)
}
}
impl HypervisorService {
/// New service with the default list of modules
pub fn new() -> Arc<HypervisorService> {
HypervisorService::with_modules(vec![])
}
/// New service with list of modules that will report for being ready
pub fn with_modules(module_ids: Vec<IpcModuleId>) -> Arc<HypervisorService> {
let mut check_list = HashMap::new();
for module_id in module_ids {
check_list.insert(module_id, false);
}
Arc::new(HypervisorService {
check_list: RwLock::new(check_list),
})
}
/// Number of modules still being waited for check-in
pub fn unchecked_count(&self) -> usize {
self.check_list.read().unwrap().iter().filter(|&(_, status)| !status).count()
}
/// List of all modules within this service
pub fn module_ids(&self) -> Vec<IpcModuleId> {
self.check_list.read().unwrap().iter().map(|(module_id, _)| module_id).cloned().collect()
}
}
impl ::ipc::IpcConfig for HypervisorService {}