domain_eth_service/
provider.rs

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
use crate::rpc::{create_eth_rpc, EthDeps};
use crate::service::{
    new_frontier_partial, spawn_frontier_tasks, EthConfiguration, FrontierPartialComponents,
};
use clap::Parser;
use domain_runtime_primitives::{Balance, Nonce};
use domain_service::providers::{BlockImportProvider, DefaultProvider, RpcProvider};
use domain_service::rpc::FullDeps;
use domain_service::FullClient;
use fc_consensus::FrontierBlockImport;
use fc_rpc::EthConfig;
use fc_storage::StorageOverrideHandler;
use fp_rpc::{ConvertTransaction, ConvertTransactionRuntimeApi, EthereumRuntimeRPCApi};
use jsonrpsee::RpcModule;
use parity_scale_codec::{Decode, Encode};
use sc_client_api::{AuxStore, Backend, BlockBackend, BlockchainEvents, StorageProvider};
use sc_rpc::SubscriptionTaskExecutor;
use sc_rpc_server::SubscriptionIdProvider;
use sc_service::BasePath;
use sc_transaction_pool::ChainApi;
use sc_transaction_pool_api::TransactionPool;
use serde::de::DeserializeOwned;
use sp_api::{ApiExt, CallApiAt, ConstructRuntimeApi, Core, ProvideRuntimeApi};
use sp_block_builder::BlockBuilder;
use sp_blockchain::{Error as BlockChainError, HeaderBackend, HeaderMetadata};
use sp_core::traits::SpawnEssentialNamed;
use sp_core::H256;
use sp_inherents::CreateInherentDataProviders;
use sp_runtime::traits::Block as BlockT;
use std::error::Error;
use std::fmt::{Debug, Display};
use std::marker::PhantomData;
use std::path::Path;
use std::sync::Arc;
use substrate_frame_rpc_system::AccountNonceApi;

/// Ethereum specific providers.
pub struct EthProvider<CT, EC> {
    eth_config: EthConfiguration,
    base_path: Option<BasePath>,
    marker: PhantomData<(CT, EC)>,
}

impl<CT, EC> EthProvider<CT, EC> {
    pub fn new(base_path: Option<&Path>, eth_cli: impl Iterator<Item = String>) -> Self {
        let eth_config = EthConfiguration::parse_from(eth_cli);
        Self::with_configuration(base_path, eth_config)
    }

    pub fn with_configuration(base_path: Option<&Path>, eth_config: EthConfiguration) -> Self {
        Self {
            eth_config,
            base_path: base_path.map(|base_path| BasePath::new(base_path.join("evm"))),
            marker: Default::default(),
        }
    }
}

impl<Block, RuntimeApi, CT, EC> BlockImportProvider<Block, FullClient<Block, RuntimeApi>>
    for EthProvider<CT, EC>
where
    Block: BlockT,
    RuntimeApi: ConstructRuntimeApi<Block, FullClient<Block, RuntimeApi>> + Send + Sync + 'static,
    RuntimeApi::RuntimeApi:
        ApiExt<Block> + Core<Block> + BlockBuilder<Block> + EthereumRuntimeRPCApi<Block>,
{
    type BI = FrontierBlockImport<
        Block,
        Arc<FullClient<Block, RuntimeApi>>,
        FullClient<Block, RuntimeApi>,
    >;

    fn block_import(&self, client: Arc<FullClient<Block, RuntimeApi>>) -> Self::BI {
        FrontierBlockImport::new(client.clone(), client)
    }
}

impl<Block, Client, BE, TxPool, CA, AccountId, CT, EC, CIDP>
    RpcProvider<Block, Client, TxPool, CA, BE, AccountId, CIDP> for EthProvider<CT, EC>
where
    Block: BlockT<Hash = H256>,
    BE: Backend<Block> + 'static,
    Client: ProvideRuntimeApi<Block>
        + BlockchainEvents<Block>
        + StorageProvider<Block, BE>
        + HeaderBackend<Block>
        + CallApiAt<Block>
        + HeaderMetadata<Block, Error = BlockChainError>
        + BlockBackend<Block>
        + AuxStore
        + Send
        + Sync
        + 'static,
    Client::Api: pallet_transaction_payment_rpc::TransactionPaymentRuntimeApi<Block, Balance>
        + EthereumRuntimeRPCApi<Block>
        + AccountNonceApi<Block, AccountId, Nonce>
        + ConvertTransactionRuntimeApi<Block>,
    Client::Api: BlockBuilder<Block>,
    Client::Api: EthereumRuntimeRPCApi<Block>,
    CT: ConvertTransaction<Block::Extrinsic> + Clone + Default + Send + Sync + 'static,
    EC: EthConfig<Block, Client>,
    TxPool: TransactionPool<Block = Block> + Sync + Send + 'static,
    CA: ChainApi<Block = Block> + 'static,
    AccountId: DeserializeOwned + Encode + Debug + Decode + Display + Clone + Sync + Send + 'static,
    CIDP: CreateInherentDataProviders<Block, ()> + Send + Clone + 'static,
{
    type Deps = EthDeps<Client, TxPool, CA, CT, Block, BE, CIDP>;

    fn deps(
        &self,
        full_deps: FullDeps<Block, Client, TxPool, CA, BE, CIDP>,
    ) -> Result<Self::Deps, sc_service::Error> {
        let client = full_deps.client.clone();
        let storage_override = Arc::new(StorageOverrideHandler::new(client.clone()));
        let base_path = match &self.base_path {
            None => BasePath::new_temp_dir()?,
            Some(base_path) => BasePath::new(base_path.path()),
        };

        let frontier_backend = Arc::new(fc_db::kv::Backend::open(
            client,
            &full_deps.database_source,
            base_path.path(),
        )?);

        let FrontierPartialComponents {
            filter_pool,
            fee_history_cache,
            fee_history_cache_limit,
        } = new_frontier_partial(self.eth_config.fee_history_limit)?;

        Ok(EthDeps {
            full_deps: full_deps.clone(),
            converter: Some(CT::default()),
            enable_dev_signer: self.eth_config.enable_dev_signer,
            sync: full_deps.sync.clone(),
            frontier_backend,
            storage_override: storage_override.clone(),
            block_data_cache: Arc::new(fc_rpc::EthBlockDataCacheTask::new(
                full_deps.task_spawner.clone(),
                storage_override,
                self.eth_config.eth_log_block_cache,
                self.eth_config.eth_statuses_cache,
                full_deps.prometheus_registry,
            )),
            filter_pool,
            max_past_logs: self.eth_config.max_past_logs,
            fee_history_cache,
            fee_history_cache_limit,
            execute_gas_limit_multiplier: self.eth_config.execute_gas_limit_multiplier,
            forced_parent_hashes: None,
            pending_inherent_data_provider: full_deps.create_inherent_data_provider,
        })
    }

    fn rpc_id(&self) -> Option<Box<dyn SubscriptionIdProvider>> {
        Some(Box::new(fc_rpc::EthereumSubIdProvider))
    }

    fn rpc_builder<SE>(
        &self,
        deps: Self::Deps,
        subscription_task_executor: SubscriptionTaskExecutor,
        essential_task_spawner: SE,
    ) -> Result<RpcModule<()>, Box<dyn Error + Send + Sync>>
    where
        SE: SpawnEssentialNamed + Clone,
    {
        let default_provider = DefaultProvider;
        let io = default_provider.rpc_builder(
            deps.full_deps.clone(),
            subscription_task_executor.clone(),
            essential_task_spawner.clone(),
        )?;

        // Sinks for pubsub notifications.
        // Everytime a new subscription is created, a new mpsc channel is added to the sink pool.
        // The MappingSyncWorker sends through the channel on block import and the subscription emits a notification to the subscriber on receiving a message through this channel.
        // This way we avoid race conditions when using native substrate block import notification stream.
        let pubsub_notification_sinks: fc_mapping_sync::EthereumBlockNotificationSinks<
            fc_mapping_sync::EthereumBlockNotification<Block>,
        > = Default::default();
        let pubsub_notification_sinks = Arc::new(pubsub_notification_sinks);

        let io = create_eth_rpc::<Client, BE, TxPool, CA, CT, Block, EC, CIDP>(
            io,
            deps.clone(),
            subscription_task_executor,
            pubsub_notification_sinks.clone(),
        )?;

        // spawn essential rpc tasks
        spawn_frontier_tasks(
            essential_task_spawner,
            deps.full_deps.client,
            deps.full_deps.backend,
            deps.frontier_backend,
            deps.storage_override,
            FrontierPartialComponents {
                filter_pool: deps.filter_pool,
                fee_history_cache: deps.fee_history_cache,
                fee_history_cache_limit: deps.fee_history_cache_limit,
            },
            deps.sync,
            pubsub_notification_sinks,
        );
        Ok(io)
    }
}