openethereum/rpc/src/v1/impls/light/parity.rs

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// 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/>.
//! Parity-specific rpc implementation.
use std::sync::Arc;
use std::collections::{BTreeMap, HashSet};
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use futures::{future, Future, BoxFuture};
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use ethcore_logger::RotatingLogger;
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use util::misc::version_data;
use crypto::ecies;
use ethkey::{Brain, Generator};
use ethstore::random_phrase;
use ethsync::LightSyncProvider;
use ethcore::account_provider::AccountProvider;
use jsonrpc_core::Error;
use jsonrpc_macros::Trailing;
use v1::helpers::{errors, SigningQueue, SignerService, NetworkSettings};
use v1::helpers::dispatch::{LightDispatcher, DEFAULT_MAC};
use v1::metadata::Metadata;
use v1::traits::Parity;
use v1::types::{
Bytes, U256, H160, H256, H512,
Peers, Transaction, RpcSettings, Histogram,
TransactionStats, LocalTransactionStatus,
BlockNumber, ConsensusCapability, VersionInfo,
OperationsInfo, DappId, ChainStatus,
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AccountInfo, HwAccountInfo,
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};
/// Parity implementation for light client.
pub struct ParityClient {
light_dispatch: Arc<LightDispatcher>,
accounts: Arc<AccountProvider>,
logger: Arc<RotatingLogger>,
settings: Arc<NetworkSettings>,
signer: Option<Arc<SignerService>>,
dapps_interface: Option<String>,
dapps_port: Option<u16>,
}
impl ParityClient {
/// Creates new `ParityClient`.
pub fn new(
light_dispatch: Arc<LightDispatcher>,
accounts: Arc<AccountProvider>,
logger: Arc<RotatingLogger>,
settings: Arc<NetworkSettings>,
signer: Option<Arc<SignerService>>,
dapps_interface: Option<String>,
dapps_port: Option<u16>,
) -> Self {
ParityClient {
light_dispatch: light_dispatch,
accounts: accounts,
logger: logger,
settings: settings,
signer: signer,
dapps_interface: dapps_interface,
dapps_port: dapps_port,
}
}
}
impl Parity for ParityClient {
type Metadata = Metadata;
fn accounts_info(&self, dapp: Trailing<DappId>) -> Result<BTreeMap<H160, AccountInfo>, Error> {
let dapp = dapp.0;
let store = &self.accounts;
let dapp_accounts = store
.note_dapp_used(dapp.clone().into())
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.and_then(|_| store.dapp_addresses(dapp.into()))
.map_err(|e| errors::account("Could not fetch accounts.", e))?
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.into_iter().collect::<HashSet<_>>();
let info = store.accounts_info().map_err(|e| errors::account("Could not fetch account info.", e))?;
let other = store.addresses_info();
Ok(info
.into_iter()
.chain(other.into_iter())
.filter(|&(ref a, _)| dapp_accounts.contains(a))
.map(|(a, v)| (H160::from(a), AccountInfo { name: v.name }))
.collect()
)
}
fn hardware_accounts_info(&self) -> Result<BTreeMap<H160, HwAccountInfo>, Error> {
let store = &self.accounts;
let info = store.hardware_accounts_info().map_err(|e| errors::account("Could not fetch account info.", e))?;
Ok(info
.into_iter()
.map(|(a, v)| (H160::from(a), HwAccountInfo { name: v.name, manufacturer: v.meta }))
.collect()
)
}
fn default_account(&self, meta: Self::Metadata) -> BoxFuture<H160, Error> {
let dapp_id = meta.dapp_id();
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future::ok(self.accounts
.dapp_addresses(dapp_id.into())
.ok()
.and_then(|accounts| accounts.get(0).cloned())
.map(|acc| acc.into())
.unwrap_or_default()
).boxed()
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}
fn transactions_limit(&self) -> Result<usize, Error> {
Ok(usize::max_value())
}
fn min_gas_price(&self) -> Result<U256, Error> {
Ok(U256::default())
}
fn extra_data(&self) -> Result<Bytes, Error> {
Ok(Bytes::default())
}
fn gas_floor_target(&self) -> Result<U256, Error> {
Ok(U256::default())
}
fn gas_ceil_target(&self) -> Result<U256, Error> {
Ok(U256::default())
}
fn dev_logs(&self) -> Result<Vec<String>, Error> {
let logs = self.logger.logs();
Ok(logs.as_slice().to_owned())
}
fn dev_logs_levels(&self) -> Result<String, Error> {
Ok(self.logger.levels().to_owned())
}
fn net_chain(&self) -> Result<String, Error> {
Ok(self.settings.chain.clone())
}
fn net_peers(&self) -> Result<Peers, Error> {
let peers = self.light_dispatch.sync.peers().into_iter().map(Into::into).collect();
let peer_numbers = self.light_dispatch.sync.peer_numbers();
Ok(Peers {
active: peer_numbers.active,
connected: peer_numbers.connected,
max: peer_numbers.max as u32,
peers: peers,
})
}
fn net_port(&self) -> Result<u16, Error> {
Ok(self.settings.network_port)
}
fn node_name(&self) -> Result<String, Error> {
Ok(self.settings.name.clone())
}
fn registry_address(&self) -> Result<Option<H160>, Error> {
Err(errors::light_unimplemented(None))
}
fn rpc_settings(&self) -> Result<RpcSettings, Error> {
Ok(RpcSettings {
enabled: self.settings.rpc_enabled,
interface: self.settings.rpc_interface.clone(),
port: self.settings.rpc_port as u64,
})
}
fn default_extra_data(&self) -> Result<Bytes, Error> {
Ok(Bytes::new(version_data()))
}
fn gas_price_histogram(&self) -> BoxFuture<Histogram, Error> {
self.light_dispatch.gas_price_corpus()
.and_then(|corpus| corpus.histogram(10).ok_or_else(errors::not_enough_data))
.map(Into::into)
.boxed()
}
fn unsigned_transactions_count(&self) -> Result<usize, Error> {
match self.signer {
None => Err(errors::signer_disabled()),
Some(ref signer) => Ok(signer.len()),
}
}
fn generate_secret_phrase(&self) -> Result<String, Error> {
Ok(random_phrase(12))
}
fn phrase_to_address(&self, phrase: String) -> Result<H160, Error> {
Ok(Brain::new(phrase).generate().unwrap().address().into())
}
fn list_accounts(&self, _: u64, _: Option<H160>, _: Trailing<BlockNumber>) -> Result<Option<Vec<H160>>, Error> {
Err(errors::light_unimplemented(None))
}
fn list_storage_keys(&self, _: H160, _: u64, _: Option<H256>, _: Trailing<BlockNumber>) -> Result<Option<Vec<H256>>, Error> {
Err(errors::light_unimplemented(None))
}
fn encrypt_message(&self, key: H512, phrase: Bytes) -> Result<Bytes, Error> {
ecies::encrypt(&key.into(), &DEFAULT_MAC, &phrase.0)
.map_err(errors::encryption_error)
.map(Into::into)
}
fn pending_transactions(&self) -> Result<Vec<Transaction>, Error> {
let txq = self.light_dispatch.transaction_queue.read();
let chain_info = self.light_dispatch.client.chain_info();
Ok(
txq.ready_transactions(chain_info.best_block_number, chain_info.best_block_timestamp)
.into_iter()
.map(Into::into)
.collect::<Vec<_>>()
)
}
fn future_transactions(&self) -> Result<Vec<Transaction>, Error> {
let txq = self.light_dispatch.transaction_queue.read();
let chain_info = self.light_dispatch.client.chain_info();
Ok(
txq.future_transactions(chain_info.best_block_number, chain_info.best_block_timestamp)
.into_iter()
.map(Into::into)
.collect::<Vec<_>>()
)
}
fn pending_transactions_stats(&self) -> Result<BTreeMap<H256, TransactionStats>, Error> {
let stats = self.light_dispatch.sync.transactions_stats();
Ok(stats.into_iter()
.map(|(hash, stats)| (hash.into(), stats.into()))
.collect()
)
}
fn local_transactions(&self) -> Result<BTreeMap<H256, LocalTransactionStatus>, Error> {
let mut map = BTreeMap::new();
let chain_info = self.light_dispatch.client.chain_info();
let (best_num, best_tm) = (chain_info.best_block_number, chain_info.best_block_timestamp);
let txq = self.light_dispatch.transaction_queue.read();
for pending in txq.ready_transactions(best_num, best_tm) {
map.insert(pending.hash().into(), LocalTransactionStatus::Pending);
}
for future in txq.future_transactions(best_num, best_tm) {
map.insert(future.hash().into(), LocalTransactionStatus::Future);
}
// TODO: other types?
Ok(map)
}
fn signer_port(&self) -> Result<u16, Error> {
self.signer
.clone()
.and_then(|signer| signer.address())
.map(|address| address.1)
.ok_or_else(|| errors::signer_disabled())
}
fn dapps_port(&self) -> Result<u16, Error> {
self.dapps_port
.ok_or_else(|| errors::dapps_disabled())
}
fn dapps_interface(&self) -> Result<String, Error> {
self.dapps_interface.clone()
.ok_or_else(|| errors::dapps_disabled())
}
fn next_nonce(&self, address: H160) -> BoxFuture<U256, Error> {
self.light_dispatch.next_nonce(address.into()).map(Into::into).boxed()
}
fn mode(&self) -> Result<String, Error> {
Err(errors::light_unimplemented(None))
}
fn chain(&self) -> Result<String, Error> {
Ok(self.settings.chain.clone())
}
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fn enode(&self) -> Result<String, Error> {
self.light_dispatch.sync.enode().ok_or_else(errors::network_disabled)
}
fn consensus_capability(&self) -> Result<ConsensusCapability, Error> {
Err(errors::light_unimplemented(None))
}
fn version_info(&self) -> Result<VersionInfo, Error> {
Err(errors::light_unimplemented(None))
}
fn releases_info(&self) -> Result<Option<OperationsInfo>, Error> {
Err(errors::light_unimplemented(None))
}
fn chain_status(&self) -> Result<ChainStatus, Error> {
let chain_info = self.light_dispatch.client.chain_info();
let gap = chain_info.ancient_block_number.map(|x| U256::from(x + 1))
.and_then(|first| chain_info.first_block_number.map(|last| (first, U256::from(last))));
Ok(ChainStatus {
block_gap: gap.map(|(x, y)| (x.into(), y.into())),
})
}
fn node_kind(&self) -> Result<::v1::types::NodeKind, Error> {
use ::v1::types::{NodeKind, Availability, Capability};
Ok(NodeKind {
availability: Availability::Personal,
capability: Capability::Light,
})
}
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}