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