135 lines
4.7 KiB
Nim
135 lines
4.7 KiB
Nim
# Nimbus
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# Copyright (c) 2024 Status Research & Development GmbH
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# Licensed under either of
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# * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE))
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# * MIT license ([LICENSE-MIT](LICENSE-MIT))
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# at your option.
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# This file may not be copied, modified, or distributed except according to
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# those terms.
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{.push raises: [].}
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import
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std/[typetraits],
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json_rpc/rpcserver, stint, web3/conversions,
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eth/p2p,
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../[transaction, vm_state, constants, vm_types],
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../db/state_db,
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rpc_types, rpc_utils,
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../core/tx_pool,
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../common/common,
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../utils/utils,
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../beacon/web3_eth_conv,
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./filters,
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../core/executor/process_block,
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../db/ledger,
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../../stateless/[witness_verification, witness_types],
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./p2p
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type
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BlockHeader = eth_types.BlockHeader
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ReadOnlyStateDB = state_db.ReadOnlyStateDB
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proc getBlockWitness*(
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com: CommonRef,
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blockHeader: BlockHeader,
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statePostExecution: bool): (KeccakHash, BlockWitness, WitnessFlags)
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{.raises: [RlpError, BlockNotFound, ValueError, CatchableError].} =
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let
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chainDB = com.db
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blockHash = chainDB.getBlockHash(blockHeader.blockNumber)
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blockBody = chainDB.getBlockBody(blockHash)
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# Initializing the VM will throw a Defect if the state doesn't exist.
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# Once we enable pruning we will need to check if the block state has been pruned
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# before trying to initialize the VM as we do here.
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vmState = BaseVMState.new(blockHeader, com)
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flags = if vmState.fork >= FKSpurious: {wfEIP170} else: {}
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vmState.generateWitness = true # Enable saving witness data
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vmState.com.hardForkTransition(blockHeader)
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var dbTx = vmState.com.db.beginTransaction()
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defer: dbTx.dispose()
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# Execute the block of transactions and collect the keys of the touched account state
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let processBlockResult = processBlock(vmState, blockHeader, blockBody)
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doAssert processBlockResult == ValidationResult.OK
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let mkeys = vmState.stateDB.makeMultiKeys()
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if statePostExecution:
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result = (vmState.stateDB.rootHash, vmState.buildWitness(mkeys), flags)
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else:
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# Reset state to what it was before executing the block of transactions
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let initialState = BaseVMState.new(blockHeader, com)
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result = (initialState.stateDB.rootHash, initialState.buildWitness(mkeys), flags)
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dbTx.rollback()
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proc getBlockProofs*(
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accDB: ReadOnlyStateDB,
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witnessRoot: KeccakHash,
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witness: BlockWitness,
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flags: WitnessFlags): seq[ProofResponse] {.raises: [RlpError].} =
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if witness.len() == 0:
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return @[]
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let verifyWitnessResult = verifyWitness(witnessRoot, witness, flags)
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doAssert verifyWitnessResult.isOk()
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var blockProofs = newSeqOfCap[ProofResponse](verifyWitnessResult.value().len())
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for address, account in verifyWitnessResult.value():
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var slots = newSeqOfCap[UInt256](account.storage.len())
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for slotKey, _ in account.storage:
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slots.add(slotKey)
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blockProofs.add(getProof(accDB, address, slots))
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return blockProofs
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proc setupExpRpc*(com: CommonRef, server: RpcServer) =
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let chainDB = com.db
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proc getStateDB(header: BlockHeader): ReadOnlyStateDB =
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## Retrieves the account db from canonical head
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# we don't use accounst_cache here because it's only read operations
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let ac = newAccountStateDB(chainDB, header.stateRoot, com.pruneTrie)
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result = ReadOnlyStateDB(ac)
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server.rpc("exp_getWitnessByBlockNumber") do(quantityTag: BlockTag, statePostExecution: bool) -> seq[byte]:
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## Returns the block witness for a block by block number or tag.
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##
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## quantityTag: integer of a block number, or the string "earliest", "latest" or "pending", as in the default block parameter.
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## statePostExecution: bool which indicates whether to return the witness based on the state before or after executing the block.
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## Returns seq[byte]
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let
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blockHeader = chainDB.headerFromTag(quantityTag)
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(_, witness, _) = getBlockWitness(com, blockHeader, statePostExecution)
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return witness
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server.rpc("exp_getProofsByBlockNumber") do(quantityTag: BlockTag, statePostExecution: bool) -> seq[ProofResponse]:
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## Returns the block proofs for a block by block number or tag.
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##
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## quantityTag: integer of a block number, or the string "earliest", "latest" or "pending", as in the default block parameter.
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## statePostExecution: bool which indicates whether to return the proofs based on the state before or after executing the block.
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## Returns seq[ProofResponse]
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let
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blockHeader = chainDB.headerFromTag(quantityTag)
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(witnessRoot, witness, flags) = getBlockWitness(com, blockHeader, statePostExecution)
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let accDB = if statePostExecution:
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getStateDB(blockHeader)
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else:
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getStateDB(chainDB.getBlockHeader(blockHeader.parentHash))
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return getBlockProofs(accDB, witnessRoot, witness, flags)
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