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

reth_rpc_eth_api/helpers/
bal.rs
