58 lines
1.8 KiB
Rust
58 lines
1.8 KiB
Rust
|
// Copyright 2015-2017 Parity Technologies (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::{Arc, Weak};
|
||
|
use ethcore::client::{Client, BlockChainClient};
|
||
|
use ethsync::SyncProvider;
|
||
|
|
||
|
#[derive(Clone)]
|
||
|
/// 'Trusted' client weak reference.
|
||
|
pub struct TrustedClient {
|
||
|
/// Blockchain client.
|
||
|
client: Weak<Client>,
|
||
|
/// Sync provider.
|
||
|
sync: Weak<SyncProvider>,
|
||
|
}
|
||
|
|
||
|
impl TrustedClient {
|
||
|
/// Create new trusted client.
|
||
|
pub fn new(client: Arc<Client>, sync: Arc<SyncProvider>) -> Self {
|
||
|
TrustedClient {
|
||
|
client: Arc::downgrade(&client),
|
||
|
sync: Arc::downgrade(&sync),
|
||
|
}
|
||
|
}
|
||
|
|
||
|
/// Get 'trusted' `Client` reference only if it is synchronized && trusted.
|
||
|
pub fn get(&self) -> Option<Arc<Client>> {
|
||
|
self.client.upgrade()
|
||
|
.and_then(|client| self.sync.upgrade().map(|sync| (client, sync)))
|
||
|
.and_then(|(client, sync)| {
|
||
|
let is_synced = !sync.status().is_syncing(client.queue_info());
|
||
|
let is_trusted = client.chain_info().security_level().is_full();
|
||
|
match is_synced && is_trusted {
|
||
|
true => Some(client),
|
||
|
false => None,
|
||
|
}
|
||
|
})
|
||
|
}
|
||
|
|
||
|
/// Get untrusted `Client` reference.
|
||
|
pub fn get_untrusted(&self) -> Option<Arc<Client>> {
|
||
|
self.client.upgrade()
|
||
|
}
|
||
|
}
|