126 lines
3.8 KiB
Rust
126 lines
3.8 KiB
Rust
// Copyright 2015-2017 Parity Technologies (UK) Ltd.
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// This file is part of Parity.
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// Parity is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// Parity is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with Parity. If not, see <http://www.gnu.org/licenses/>.
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use std::sync::{RwLock,Arc};
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use ipc::IpcConfig;
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use std::collections::HashMap;
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use nanoipc;
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pub type IpcModuleId = u64;
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/// Blockhain database module id
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pub const CLIENT_MODULE_ID: IpcModuleId = 2000;
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/// Sync module id
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pub const SYNC_MODULE_ID: IpcModuleId = 2100;
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/// IPC service that handles module management
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pub struct HypervisorService {
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modules: RwLock<HashMap<IpcModuleId, ModuleState>>,
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}
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#[derive(Default)]
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pub struct ModuleState {
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started: bool,
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control_url: String,
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shutdown: bool,
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}
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#[ipc]
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pub trait ControlService {
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fn shutdown(&self) -> bool;
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}
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#[ipc]
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impl HypervisorService {
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// return type for making method synchronous
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fn module_ready(&self, module_id: u64, control_url: String) -> bool {
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let mut modules = self.modules.write().unwrap();
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modules.get_mut(&module_id).map(|mut module| {
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module.started = true;
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module.control_url = control_url;
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});
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trace!(target: "hypervisor", "Module ready: {}", module_id);
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true
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}
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// return type for making method synchronous
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fn module_shutdown(&self, module_id: u64) -> bool {
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let mut modules = self.modules.write().unwrap();
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modules.get_mut(&module_id).map(|mut module| {
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module.shutdown = true;
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});
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trace!(target: "hypervisor", "Module shutdown: {}", module_id);
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true
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}
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}
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impl HypervisorService {
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/// New service with the default list of modules
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pub fn new() -> Arc<HypervisorService> {
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HypervisorService::with_modules(vec![])
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}
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/// New service with list of modules that will report for being ready
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pub fn with_modules(module_ids: Vec<IpcModuleId>) -> Arc<HypervisorService> {
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let mut modules = HashMap::new();
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for module_id in module_ids {
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modules.insert(module_id, ModuleState::default());
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}
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Arc::new(HypervisorService {
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modules: RwLock::new(modules),
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})
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}
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/// Add the module to the check-list
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pub fn add_module(&self, module_id: IpcModuleId) {
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self.modules.write().unwrap().insert(module_id, ModuleState::default());
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}
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/// Number of modules still being waited for check-in
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pub fn unchecked_count(&self) -> usize {
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self.modules.read().unwrap().iter().filter(|&(_, module)| !module.started).count()
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}
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/// List of all modules within this service
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pub fn module_ids(&self) -> Vec<IpcModuleId> {
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self.modules.read().unwrap().iter().map(|(module_id, _)| module_id).cloned().collect()
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}
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/// Number of modules started and running
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pub fn running_count(&self) -> usize {
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self.modules.read().unwrap().iter().filter(|&(_, module)| module.started && !module.shutdown).count()
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}
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pub fn is_running(&self, id: IpcModuleId) -> bool {
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self.modules.read().unwrap().get(&id).map(|module| module.started && !module.shutdown).unwrap_or(false)
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}
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pub fn send_shutdown(&self, module_id: IpcModuleId) {
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let modules = self.modules.read().unwrap();
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modules.get(&module_id).map(|module| {
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trace!(target: "hypervisor", "Sending shutdown to {}({})", module_id, &module.control_url);
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let client = nanoipc::fast_client::<ControlServiceClient<_>>(&module.control_url).unwrap();
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client.shutdown();
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trace!(target: "hypervisor", "Sent shutdown to {}", module_id);
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});
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}
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}
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impl ::ipc::IpcConfig for HypervisorService {}
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impl ::ipc::IpcConfig for ControlService {}
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