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// Copyright (C) Moondance Labs Ltd.
// This file is part of Tanssi.
// Tanssi 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.
// Tanssi 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 Tanssi. If not, see <http://www.gnu.org/licenses/>.
//! A collection of node-specific RPC methods.
//! Substrate provides the `sc-rpc` crate, which defines the core RPC layer
//! used by Substrate nodes. This file extends those RPC definitions with
//! capabilities that are specific to this project's runtime configuration.
#![warn(missing_docs)]
pub use sc_rpc::SubscriptionTaskExecutor;
use {
container_chain_template_frontier_runtime::{opaque::Block, AccountId, Hash, Index},
core::marker::PhantomData,
cumulus_client_parachain_inherent::ParachainInherentData,
cumulus_primitives_core::{ParaId, PersistedValidationData},
cumulus_test_relay_sproof_builder::RelayStateSproofBuilder,
fc_rpc::{
EthApiServer, EthFilterApiServer, EthPubSubApiServer, EthTask, TxPool, TxPoolApiServer,
},
fc_storage::StorageOverride,
fp_rpc::EthereumRuntimeRPCApi,
frame_support::CloneNoBound,
futures::StreamExt,
jsonrpsee::RpcModule,
manual_xcm_rpc::{ManualXcm, ManualXcmApiServer},
sc_client_api::{
backend::{Backend, StateBackend},
client::BlockchainEvents,
AuxStore, BlockOf, StorageProvider,
sc_consensus_manual_seal::rpc::{EngineCommand, ManualSeal, ManualSealApiServer},
sc_network_sync::SyncingService,
sc_service::TaskManager,
sc_transaction_pool_api::TransactionPool,
sp_api::{CallApiAt, ProvideRuntimeApi},
sp_block_builder::BlockBuilder,
sp_blockchain::{
Backend as BlockchainBackend, Error as BlockChainError, HeaderBackend, HeaderMetadata,
sp_consensus_aura::SlotDuration,
sp_core::H256,
sp_runtime::traits::{BlakeTwo256, Block as BlockT, Header as HeaderT},
std::{
collections::BTreeMap,
sync::{Arc, Mutex},
time::Duration,
tc_service_container_chain::service::{ContainerChainClient, MinimalContainerRuntimeApi},
};
pub struct DefaultEthConfig<C, BE>(std::marker::PhantomData<(C, BE)>);
impl<C, BE> fc_rpc::EthConfig<Block, C> for DefaultEthConfig<C, BE>
where
C: StorageProvider<Block, BE> + Sync + Send + 'static,
BE: Backend<Block> + 'static,
{
type EstimateGasAdapter = ();
type RuntimeStorageOverride =
fc_rpc::frontier_backend_client::SystemAccountId20StorageOverride<Block, C, BE>;
}
mod eth;
pub use eth::*;
mod finality;
/// Full client dependencies.
pub struct FullDeps<C, P, BE> {
/// The client instance to use.
pub client: Arc<C>,
/// Transaction pool instance.
pub pool: Arc<P>,
/// Graph pool instance.
pub graph: Arc<P>,
/// Network service
pub network: Arc<dyn sc_network::service::traits::NetworkService>,
/// Chain syncing service
pub sync: Arc<SyncingService<Block>>,
/// EthFilterApi pool.
pub filter_pool: Option<FilterPool>,
/// Frontier Backend.
// TODO: log indexer?
pub frontier_backend: Arc<dyn fc_api::Backend<Block>>,
/// Backend.
#[allow(dead_code)] // not used but keep nice type inference
pub backend: Arc<BE>,
/// Maximum number of logs in a query.
pub max_past_logs: u32,
/// Maximum block range in a query.
pub max_block_range: u32,
/// Maximum fee history cache size.
pub fee_history_limit: u64,
/// Fee history cache.
pub fee_history_cache: FeeHistoryCache,
/// Ethereum data access overrides.
pub overrides: Arc<dyn StorageOverride<Block>>,
/// Cache for Ethereum block data.
pub block_data_cache: Arc<EthBlockDataCacheTask<Block>>,
/// The Node authority flag
pub is_authority: bool,
/// Manual seal command sink
pub command_sink: Option<futures::channel::mpsc::Sender<EngineCommand<Hash>>>,
/// Channels for manual xcm messages (downward, hrmp)
pub xcm_senders: Option<(flume::Sender<Vec<u8>>, flume::Sender<(ParaId, Vec<u8>)>)>,
/// Instantiate all Full RPC extensions.
pub fn create_full<C, P, BE>(
deps: FullDeps<C, P, BE>,
subscription_task_executor: SubscriptionTaskExecutor,
pubsub_notification_sinks: Arc<
fc_mapping_sync::EthereumBlockNotificationSinks<
fc_mapping_sync::EthereumBlockNotification<Block>,
>,
) -> Result<RpcModule<()>, Box<dyn std::error::Error + Send + Sync>>
BE::State: StateBackend<BlakeTwo256>,
BE::Blockchain: BlockchainBackend<Block>,
C: ProvideRuntimeApi<Block> + StorageProvider<Block, BE> + AuxStore,
C: BlockchainEvents<Block>,
C: HeaderBackend<Block> + HeaderMetadata<Block, Error = BlockChainError> + 'static,
C: CallApiAt<Block>,
C: Send + Sync + 'static,
C::Api: RuntimeApiCollection,
P: TransactionPool<Block = Block, Hash = <Block as BlockT>::Hash> + 'static,
fc_rpc::{Eth, EthFilter, EthPubSub, Net, NetApiServer, Web3, Web3ApiServer},
finality::{FrontierFinality, FrontierFinalityApiServer},
substrate_frame_rpc_system::{System, SystemApiServer},
let mut io = RpcModule::new(());
let FullDeps {
client,
pool,
graph,
network,
sync,
filter_pool,
frontier_backend,
backend: _,
max_past_logs,
max_block_range,
fee_history_limit,
fee_history_cache,
overrides,
block_data_cache,
is_authority,
command_sink,
xcm_senders,
} = deps;
io.merge(System::new(Arc::clone(&client), Arc::clone(&pool)).into_rpc())?;
// TODO: are we supporting signing?
let signers = Vec::new();
enum Never {}
impl<T> fp_rpc::ConvertTransaction<T> for Never {
fn convert_transaction(&self, _transaction: pallet_ethereum::Transaction) -> T {
// The Never type is not instantiable, but this method requires the type to be
// instantiated to be called (`&self` parameter), so if the code compiles we have the
// guarantee that this function will never be called.
unreachable!()
let convert_transaction: Option<Never> = None;
let authorities = vec![tc_consensus::get_aura_id_from_seed("alice")];
let authorities_for_cdp = authorities.clone();
let pending_create_inherent_data_providers = move |_, ()| {
let authorities_for_cidp = authorities.clone();
async move {
let mocked_authorities_noting =
ccp_authorities_noting_inherent::MockAuthoritiesNotingInherentDataProvider {
current_para_block: 1000,
relay_offset: 1000,
relay_blocks_per_para_block: 2,
orchestrator_para_id: 1000u32.into(),
container_para_id: 2000u32.into(),
authorities: authorities_for_cidp,
let timestamp = sp_timestamp::InherentDataProvider::from_system_time();
// Create a dummy parachain inherent data provider which is required to pass
// the checks by the para chain system. We use dummy values because in the 'pending context'
// neither do we have access to the real values nor do we need them.
let (relay_parent_storage_root, relay_chain_state) = RelayStateSproofBuilder {
additional_key_values: mocked_authorities_noting.get_key_values(),
..Default::default()
.into_state_root_and_proof();
let vfp = PersistedValidationData {
// This is a hack to make `cumulus_pallet_parachain_system::RelayNumberStrictlyIncreases`
// happy. Relay parent number can't be bigger than u32::MAX.
relay_parent_number: u32::MAX,
relay_parent_storage_root,
let parachain_inherent_data = ParachainInherentData {
validation_data: vfp,
relay_chain_state,
downward_messages: Default::default(),
horizontal_messages: Default::default(),
Ok((
timestamp,
parachain_inherent_data,
mocked_authorities_noting,
))
let pending_consensus_data_provider_frontier: Option<
Box<(dyn fc_rpc::pending::ConsensusDataProvider<_>)>,
> = Some(Box::new(
tc_consensus::ContainerManualSealAuraConsensusDataProvider::new(
SlotDuration::from_millis(container_chain_template_frontier_runtime::SLOT_DURATION),
authorities_for_cdp,
),
));
io.merge(
Eth::<_, _, _, _, _, _, DefaultEthConfig<C, BE>>::new(
Arc::clone(&client),
Arc::clone(&pool),
Arc::clone(&graph),
convert_transaction,
Arc::clone(&sync),
signers,
Arc::clone(&overrides),
Arc::clone(&frontier_backend),
Arc::clone(&block_data_cache),
10,
None,
pending_create_inherent_data_providers,
pending_consensus_data_provider_frontier,
)
.into_rpc(),
)?;
let tx_pool: TxPool<Block, _, _> = TxPool::new(client.clone(), graph.clone());
if let Some(filter_pool) = filter_pool {
EthFilter::new(
client.clone(),
frontier_backend.clone(),
500_usize, // max stored filters
Net::new(
// Whether to format the `peer_count` response as Hex (default) or not.
true,
if let Some(command_sink) = command_sink {
// We provide the rpc handler with the sending end of the channel to allow the rpc
// send EngineCommands to the background block authorship task.
ManualSeal::new(command_sink).into_rpc(),
io.merge(Web3::new(Arc::clone(&client)).into_rpc())?;
EthPubSub::new(
subscription_task_executor,
pubsub_notification_sinks,
io.merge(tx_pool.into_rpc())?;
if let Some((downward_message_channel, hrmp_message_channel)) = xcm_senders {
ManualXcm {
downward_message_channel,
hrmp_message_channel,
io.merge(FrontierFinality::new(client.clone(), frontier_backend.clone()).into_rpc())?;
Ok(io)
pub struct SpawnTasksParams<'a, B: BlockT, C, BE> {
pub task_manager: &'a TaskManager,
pub substrate_backend: Arc<BE>,
pub frontier_backend: Arc<fc_db::Backend<B, C>>,
pub overrides: Arc<dyn StorageOverride<B>>,
pub sync_service: Arc<SyncingService<B>>,
pub pubsub_notification_sinks: Arc<
fc_mapping_sync::EthereumBlockNotification<B>,
use fc_mapping_sync::{kv::MappingSyncWorker, SyncStrategy};
/// Spawn the tasks that are required to run Moonbeam.
pub fn spawn_essential_tasks<B, C, BE>(params: SpawnTasksParams<B, C, BE>)
C: ProvideRuntimeApi<B> + BlockOf,
C: HeaderBackend<B> + HeaderMetadata<B, Error = BlockChainError> + 'static,
C: BlockchainEvents<B> + StorageProvider<B, BE>,
C::Api: EthereumRuntimeRPCApi<B>,
C::Api: BlockBuilder<B>,
B: BlockT<Hash = H256> + Send + Sync + 'static,
B::Header: HeaderT<Number = u32>,
BE: Backend<B> + 'static,
// Frontier offchain DB task. Essential.
// Maps emulated ethereum data to substrate native data.
match &*params.frontier_backend {
fc_db::Backend::KeyValue(b) => {
params.task_manager.spawn_essential_handle().spawn(
"frontier-mapping-sync-worker",
Some("frontier"),
MappingSyncWorker::new(
params.client.import_notification_stream(),
Duration::new(6, 0),
params.client.clone(),
params.substrate_backend.clone(),
params.overrides.clone(),
b.clone(),
3,
0,
SyncStrategy::Parachain,
params.sync_service.clone(),
params.pubsub_notification_sinks.clone(),
.for_each(|()| futures::future::ready(())),
);
fc_db::Backend::Sql(b) => {
params.task_manager.spawn_essential_handle().spawn_blocking(
fc_mapping_sync::sql::SyncWorker::run(
fc_mapping_sync::sql::SyncWorkerConfig {
read_notification_timeout: Duration::from_secs(10),
check_indexed_blocks_interval: Duration::from_secs(60),
fc_mapping_sync::SyncStrategy::Parachain,
// Frontier `EthFilterApi` maintenance.
// Manages the pool of user-created Filters.
if let Some(filter_pool) = params.filter_pool {
// Each filter is allowed to stay in the pool for 100 blocks.
// TODO: Re-visit this assumption with parathreads, as they
// might have a block every good amount of time, and can be abused
// likely we will need to implement a time-based filter
const FILTER_RETAIN_THRESHOLD: u64 = 100;
"frontier-filter-pool",
EthTask::filter_pool_task(
Arc::clone(¶ms.client),
FILTER_RETAIN_THRESHOLD,
// Spawn Frontier FeeHistory cache maintenance task.
"frontier-fee-history",
EthTask::fee_history_task(
Arc::clone(¶ms.overrides),
params.fee_history_cache,
params.fee_history_limit,
/// A set of APIs that polkadot-like runtimes must implement.
///
/// This trait has no methods or associated type. It is a concise marker for all the trait bounds
/// that it contains.
pub trait RuntimeApiCollection:
sp_transaction_pool::runtime_api::TaggedTransactionQueue<Block>
+ sp_api::ApiExt<Block>
+ sp_block_builder::BlockBuilder<Block>
+ substrate_frame_rpc_system::AccountNonceApi<Block, AccountId, Index>
+ sp_api::Metadata<Block>
+ sp_offchain::OffchainWorkerApi<Block>
+ sp_session::SessionKeys<Block>
+ fp_rpc::ConvertTransactionRuntimeApi<Block>
+ fp_rpc::EthereumRuntimeRPCApi<Block>
+ cumulus_primitives_core::CollectCollationInfo<Block>
impl<Api> RuntimeApiCollection for Api where
Api: sp_transaction_pool::runtime_api::TaggedTransactionQueue<Block>
tp_traits::alias!(
pub trait FrontierRpcRuntimeApi:
MinimalContainerRuntimeApi +
sp_api::ConstructRuntimeApi<
Block,
ContainerChainClient<Self>,
RuntimeApi:
RuntimeApiCollection
>
#[derive(CloneNoBound)]
pub struct GenerateFrontierRpcBuilder<RuntimeApi> {
pub rpc_config: crate::cli::RpcConfig,
pub phantom: PhantomData<RuntimeApi>,
const _: () = {
use tc_service_container_chain::rpc::generate_rpc_builder::*;
impl<RuntimeApi: FrontierRpcRuntimeApi> GenerateRpcBuilder<RuntimeApi>
for GenerateFrontierRpcBuilder<RuntimeApi>
fn generate(
&self,
GenerateRpcBuilderParams {
backend,
container_chain_config,
prometheus_registry,
sync_service,
task_manager,
transaction_pool,
..
}: GenerateRpcBuilderParams<RuntimeApi>,
) -> Result<CompleteRpcBuilder, ServiceError> {
let max_past_logs = self.rpc_config.max_past_logs;
let max_block_range = self.rpc_config.max_block_range;
// Frontier specific stuff
let filter_pool: Option<FilterPool> = Some(Arc::new(Mutex::new(BTreeMap::new())));
let fee_history_cache: FeeHistoryCache = Arc::new(Mutex::new(BTreeMap::new()));
let frontier_backend = Arc::new(fc_db::Backend::KeyValue(
crate::service::open_frontier_backend(client.clone(), container_chain_config)?
.into(),
let overrides = Arc::new(fc_rpc::StorageOverrideHandler::new(client.clone()));
let fee_history_limit = self.rpc_config.fee_history_limit;
let pubsub_notification_sinks: fc_mapping_sync::EthereumBlockNotificationSinks<
> = Default::default();
let pubsub_notification_sinks = Arc::new(pubsub_notification_sinks);
spawn_essential_tasks(SpawnTasksParams {
client: client.clone(),
substrate_backend: backend.clone(),
frontier_backend: frontier_backend.clone(),
filter_pool: filter_pool.clone(),
overrides: overrides.clone(),
fee_history_cache: fee_history_cache.clone(),
sync_service: sync_service.clone(),
pubsub_notification_sinks: pubsub_notification_sinks.clone(),
});
let block_data_cache = Arc::new(fc_rpc::EthBlockDataCacheTask::new(
task_manager.spawn_handle(),
overrides.clone(),
self.rpc_config.eth_log_block_cache,
self.rpc_config.eth_statuses_cache,
prometheus_registry.clone(),
Ok(Box::new(move |subscription_task_executor| {
let deps = crate::rpc::FullDeps {
backend: backend.clone(),
frontier_backend: match &*frontier_backend {
fc_db::Backend::KeyValue(b) => b.clone(),
fc_db::Backend::Sql(b) => b.clone(),
graph: transaction_pool.clone(),
pool: transaction_pool.clone(),
network: Arc::new(network.clone()),
sync: sync_service.clone(),
block_data_cache: block_data_cache.clone(),
is_authority: false,
command_sink: None,
xcm_senders: None,
crate::rpc::create_full(
deps,
pubsub_notification_sinks.clone(),
.map_err(Into::into)
}))