reth_rpc_eth_api/helpers/
bal.rs

1//! Helpers for `eth_blockAccessList` RPC method.
2use alloy_consensus::BlockHeader;
3use alloy_eip7928::{bal::DecodedBal, BlockAccessList};
4use alloy_primitives::Bytes;
5use alloy_rpc_types_eth::BlockId;
6use reth_errors::RethError;
7use reth_evm::{block::BlockExecutor, ConfigureEvm, Evm};
8use reth_revm::{database::StateProviderDatabase, State};
9use reth_rpc_eth_types::{error::FromEthApiError, EthApiError};
10use reth_storage_api::StateProviderFactory;
11
12use crate::{
13    helpers::{Call, LoadBlock, Trace},
14    RpcNodeCore, RpcNodeCoreExt,
15};
16
17/// Helper trait for `eth_blockAccessList` RPC method.
18pub trait GetBlockAccessList: Trace + Call + LoadBlock + RpcNodeCoreExt {
19    /// Retrieves the block access list for a block identified by its hash.
20    fn get_block_access_list(
21        &self,
22        block_id: BlockId,
23    ) -> impl Future<Output = Result<Option<BlockAccessList>, Self::Error>> + Send {
24        async move {
25            if block_id.is_pending() {
26                return Ok(None)
27            }
28
29            let Some(block) = self.recovered_block(block_id).await? else {
30                return Ok(None);
31            };
32
33            if let Some(cached_bal) =
34                self.cache().get_bal(block.hash()).await.map_err(Self::Error::from_eth_err)?
35            {
36                let (bal, _) = DecodedBal::from_rlp_bytes(cached_bal.as_raw().clone())
37                    .map_err(RethError::other)
38                    .map_err(Self::Error::from_eth_err)?
39                    .split();
40                return Ok(Some(Vec::from(bal)))
41            }
42
43            let permit = self
44                .acquire_owned_blocking_io()
45                .await
46                .map_err(|_| EthApiError::InternalEthError)?;
47
48            self.spawn_blocking_io(move |eth_api| {
49                let _permit = permit;
50                let state = eth_api
51                    .provider()
52                    .state_by_block_id(block.parent_hash().into())
53                    .map_err(Self::Error::from_eth_err)?;
54
55                let mut db = State::builder()
56                    .with_database(StateProviderDatabase::new(state))
57                    .with_bal_builder()
58                    .build();
59
60                let block_txs = block.transactions_recovered();
61                let mut executor = RpcNodeCore::evm_config(&eth_api)
62                    .executor_for_block(&mut db, block.sealed_block())
63                    .map_err(RethError::other)
64                    .map_err(Self::Error::from_eth_err)?;
65
66                executor.apply_pre_execution_changes().map_err(Self::Error::from_eth_err)?;
67                executor.evm_mut().db_mut().bump_bal_index();
68
69                // replay all transactions prior to the targeted transaction
70                for block_tx in block_txs {
71                    executor.execute_transaction(block_tx).map_err(Self::Error::from_eth_err)?;
72                    executor.evm_mut().db_mut().bump_bal_index();
73                }
74
75                executor
76                    .apply_post_execution_changes()
77                    .map_err(|err| EthApiError::Internal(err.into()))?;
78
79                let bal = db.take_built_alloy_bal();
80                Ok(bal)
81            })
82            .await
83        }
84    }
85
86    /// Retrieves the raw RLP-encoded block access list for a block.
87    fn get_raw_block_access_list(
88        &self,
89        block_id: BlockId,
90    ) -> impl Future<Output = Result<Option<Bytes>, Self::Error>> + Send {
91        async move {
92            let block = self
93                .recovered_block(block_id)
94                .await?
95                .ok_or_else(|| EthApiError::HeaderNotFound(block_id))?;
96
97            if let Some(cached_bal) =
98                self.cache().get_bal(block.hash()).await.map_err(Self::Error::from_eth_err)?
99            {
100                return Ok(Some(cached_bal.as_raw().clone()))
101            }
102
103            Ok(self.get_block_access_list(block_id).await?.map(|bal| alloy_rlp::encode(bal).into()))
104        }
105    }
106}
reth_rpc_eth_api/helpers/bal.rs

reth_rpc_eth_api/helpers/
bal.rs
