109 lines
3.5 KiB
Rust
109 lines
3.5 KiB
Rust
// Copyright 2015, 2016 Ethcore (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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//! Transactions Confirmations (personal) rpc implementation
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use std::sync::{Arc, Weak};
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use jsonrpc_core::*;
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use ethcore::account_provider::AccountProvider;
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use ethcore::client::MiningBlockChainClient;
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use ethcore::miner::MinerService;
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use v1::traits::PersonalSigner;
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use v1::types::{TransactionModification, TransactionConfirmation, U256};
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use v1::impls::unlock_sign_and_dispatch;
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use v1::helpers::{SigningQueue, ConfirmationsQueue};
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/// Transactions confirmation (personal) rpc implementation.
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pub struct SignerClient<C, M> where C: MiningBlockChainClient, M: MinerService {
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queue: Weak<ConfirmationsQueue>,
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accounts: Weak<AccountProvider>,
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client: Weak<C>,
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miner: Weak<M>,
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}
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impl<C: 'static, M: 'static> SignerClient<C, M> where C: MiningBlockChainClient, M: MinerService {
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/// Create new instance of signer client.
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pub fn new(store: &Arc<AccountProvider>, client: &Arc<C>, miner: &Arc<M>, queue: &Arc<ConfirmationsQueue>) -> Self {
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SignerClient {
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queue: Arc::downgrade(queue),
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accounts: Arc::downgrade(store),
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client: Arc::downgrade(client),
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miner: Arc::downgrade(miner),
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}
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}
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fn active(&self) -> Result<(), Error> {
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// TODO: only call every 30s at most.
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take_weak!(self.client).keep_alive();
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Ok(())
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}
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}
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impl<C: 'static, M: 'static> PersonalSigner for SignerClient<C, M> where C: MiningBlockChainClient, M: MinerService {
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fn transactions_to_confirm(&self, _params: Params) -> Result<Value, Error> {
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try!(self.active());
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let queue = take_weak!(self.queue);
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to_value(&queue.requests().into_iter().map(From::from).collect::<Vec<TransactionConfirmation>>())
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}
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fn confirm_transaction(&self, params: Params) -> Result<Value, Error> {
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try!(self.active());
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from_params::<(U256, TransactionModification, String)>(params).and_then(
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|(id, modification, pass)| {
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let id = id.into();
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let accounts = take_weak!(self.accounts);
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let queue = take_weak!(self.queue);
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let client = take_weak!(self.client);
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let miner = take_weak!(self.miner);
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queue.peek(&id).and_then(|confirmation| {
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let mut request = confirmation.transaction;
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// apply modification
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if let Some(gas_price) = modification.gas_price {
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request.gas_price = Some(gas_price.into());
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}
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let sender = request.from;
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match unlock_sign_and_dispatch(&*client, &*miner, request, &*accounts, sender, pass) {
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Ok(hash) => {
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queue.request_confirmed(id, Ok(hash.clone()));
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Some(to_value(&hash))
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},
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_ => None
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}
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})
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.unwrap_or_else(|| {
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to_value(&false)
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})
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}
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)
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}
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fn reject_transaction(&self, params: Params) -> Result<Value, Error> {
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try!(self.active());
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from_params::<(U256, )>(params).and_then(
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|(id, )| {
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let queue = take_weak!(self.queue);
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let res = queue.request_rejected(id.into());
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to_value(&res.is_some())
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}
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)
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}
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}
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