344 lines
13 KiB
Nim
344 lines
13 KiB
Nim
# Fluffy
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# Copyright (c) 2021-2024 Status Research & Development GmbH
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# Licensed and distributed under either of
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# * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
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# * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
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# at your option. This file may not be copied, modified, or distributed except according to those terms.
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{.push raises: [].}
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import
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std/[times, sequtils, strutils, typetraits],
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json_rpc/[rpcproxy, rpcserver],
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web3/[conversions], # sigh, for FixedBytes marshalling
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eth/[common/eth_types, rlp],
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beacon_chain/spec/forks,
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../../nimbus/rpc/[rpc_types, filters],
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../../nimbus/transaction,
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# TODO: this is a bit weird but having this import makes beacon_light_client
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# to fail compilation due throwing undeclared `CatchableError` in
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# `vendor/nimbus-eth2/beacon_chain/spec/keystore.nim`. This is most probably
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# caused by `readValue` clashing ?
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# ../../nimbus/common/chain_config
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../network/history/[history_network, history_content],
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../network/beacon/beacon_light_client
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# Subset of Eth JSON-RPC API: https://eth.wiki/json-rpc/API
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# Supported subset will eventually be found here:
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# https://github.com/ethereum/stateless-ethereum-specs/blob/master/portal-network.md#json-rpc-api
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#
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# In order to already support these calls before every part of the Portal
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# Network is up, one plan is to get the data directly from an external client
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# through RPC calls. Practically just playing a proxy to that client.
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# Can be done by just forwarding the rpc call, or by adding a call here, but
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# that would introduce a unnecessary serializing/deserializing step.
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# Some similar code as from nimbus `rpc_utils`, but avoiding that import as it
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# brings in a lot more. Should restructure `rpc_utils` a bit before using that.
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func toHash*(value: rpc_types.Hash256): eth_types.Hash256 =
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result.data = value.bytes
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func init*(
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T: type TransactionObject,
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tx: eth_types.Transaction,
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header: eth_types.BlockHeader,
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txIndex: int,
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): T {.raises: [ValidationError].} =
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TransactionObject(
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blockHash: some(w3Hash header.blockHash),
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blockNumber: some(Quantity(header.blockNumber.truncate(uint64))),
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`from`: w3Addr tx.getSender(),
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gas: Quantity(tx.gasLimit),
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gasPrice: Quantity(tx.gasPrice),
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hash: w3Hash tx.rlpHash,
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input: tx.payload,
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nonce: Quantity(tx.nonce),
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to: some(w3Addr tx.destination),
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transactionIndex: some(Quantity(txIndex)),
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value: tx.value,
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v: Quantity(tx.V),
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r: tx.R,
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s: tx.S,
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`type`: some(Quantity(tx.txType)),
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maxFeePerGas: some(Quantity(tx.maxFee)),
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maxPriorityFeePerGas: some(Quantity(tx.maxPriorityFee)),
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)
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# Note: Similar as `populateBlockObject` from rpc_utils, but lacking the
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# total difficulty
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func init*(
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T: type BlockObject,
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header: eth_types.BlockHeader,
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body: BlockBody,
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fullTx = true,
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isUncle = false,
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): T {.raises: [ValidationError].} =
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let blockHash = header.blockHash
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var blockObject = BlockObject(
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number: Quantity(header.blockNumber.truncate(uint64)),
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hash: w3Hash blockHash,
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parentHash: w3Hash header.parentHash,
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nonce: some(FixedBytes[8](header.nonce)),
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sha3Uncles: w3Hash header.ommersHash,
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logsBloom: FixedBytes[256] header.bloom,
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transactionsRoot: w3Hash header.txRoot,
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stateRoot: w3Hash header.stateRoot,
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receiptsRoot: w3Hash header.receiptRoot,
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miner: w3Addr header.coinbase,
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difficulty: header.difficulty,
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extraData: HistoricExtraData header.extraData,
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# TODO: This is optional according to
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# https://playground.open-rpc.org/?schemaUrl=https://raw.githubusercontent.com/ethereum/eth1.0-apis/assembled-spec/openrpc.json
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# So we should probably change `BlockObject`.
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totalDifficulty: UInt256.low(),
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gasLimit: Quantity(header.gasLimit.uint64),
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gasUsed: Quantity(header.gasUsed.uint64),
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timestamp: Quantity(header.timestamp.uint64),
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)
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let size = sizeof(BlockHeader) - sizeof(Blob) + header.extraData.len
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blockObject.size = Quantity(size.uint)
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if not isUncle:
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blockObject.uncles = body.uncles.map(
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proc(h: BlockHeader): rpc_types.Hash256 =
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w3Hash h.blockHash
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)
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if fullTx:
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var i = 0
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for tx in body.transactions:
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# ValidationError from tx.getSender in TransactionObject.init
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blockObject.transactions.add txOrHash(TransactionObject.init(tx, header, i))
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inc i
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else:
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for tx in body.transactions:
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blockObject.transactions.add txOrHash(w3Hash keccakHash(rlp.encode(tx)))
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blockObject
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proc installEthApiHandlers*(
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# Currently only HistoryNetwork needed, later we might want a master object
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# holding all the networks.
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rpcServerWithProxy: var RpcProxy,
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historyNetwork: HistoryNetwork,
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beaconLightClient: Opt[LightClient],
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) =
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# Supported API
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rpcServerWithProxy.registerProxyMethod("eth_blockNumber")
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rpcServerWithProxy.registerProxyMethod("eth_call")
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# rpcServerWithProxy.registerProxyMethod("eth_chainId")
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rpcServerWithProxy.registerProxyMethod("eth_estimateGas")
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rpcServerWithProxy.registerProxyMethod("eth_feeHistory")
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rpcServerWithProxy.registerProxyMethod("eth_getBalance")
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# rpcServerWithProxy.registerProxyMethod("eth_getBlockByHash")
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# rpcServerWithProxy.registerProxyMethod("eth_getBlockByNumber")
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# rpcServerWithProxy.registerProxyMethod("eth_getBlockTransactionCountByHash")
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rpcServerWithProxy.registerProxyMethod("eth_getBlockTransactionCountByNumber")
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rpcServerWithProxy.registerProxyMethod("eth_getCode")
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rpcServerWithProxy.registerProxyMethod("eth_getRawTransactionByHash")
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rpcServerWithProxy.registerProxyMethod("eth_getRawTransactionByBlockHashAndIndex")
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rpcServerWithProxy.registerProxyMethod("eth_getRawTransactionByBlockNumberAndIndex")
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rpcServerWithProxy.registerProxyMethod("eth_getStorageAt")
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rpcServerWithProxy.registerProxyMethod("eth_getTransactionByBlockHashAndIndex")
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rpcServerWithProxy.registerProxyMethod("eth_getTransactionByBlockNumberAndIndex")
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rpcServerWithProxy.registerProxyMethod("eth_getTransactionByHash")
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rpcServerWithProxy.registerProxyMethod("eth_getTransactionCount")
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rpcServerWithProxy.registerProxyMethod("eth_getTransactionReceipt")
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rpcServerWithProxy.registerProxyMethod("eth_getUncleByBlockHashAndIndex")
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rpcServerWithProxy.registerProxyMethod("eth_getUncleByBlockNumberAndIndex")
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rpcServerWithProxy.registerProxyMethod("eth_getUncleCountByBlockHash")
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rpcServerWithProxy.registerProxyMethod("eth_getUncleCountByBlockNumber")
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rpcServerWithProxy.registerProxyMethod("eth_getProof")
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rpcServerWithProxy.registerProxyMethod("eth_sendRawTransaction")
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# Optional API
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rpcServerWithProxy.registerProxyMethod("eth_gasPrice")
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rpcServerWithProxy.registerProxyMethod("eth_getFilterChanges")
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rpcServerWithProxy.registerProxyMethod("eth_getFilterLogs")
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# rpcServerWithProxy.registerProxyMethod("eth_getLogs")
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rpcServerWithProxy.registerProxyMethod("eth_newBlockFilter")
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rpcServerWithProxy.registerProxyMethod("eth_newFilter")
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rpcServerWithProxy.registerProxyMethod("eth_newPendingTransactionFilter")
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rpcServerWithProxy.registerProxyMethod("eth_pendingTransactions")
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rpcServerWithProxy.registerProxyMethod("eth_syncing")
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rpcServerWithProxy.registerProxyMethod("eth_uninstallFilter")
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# Supported API through the Portal Network
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rpcServerWithProxy.rpc("eth_chainId") do() -> Quantity:
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# The Portal Network can only support MainNet at the moment, so always return
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# 1
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return Quantity(uint64(1))
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rpcServerWithProxy.rpc("eth_getBlockByHash") do(
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data: rpc_types.Hash256, fullTransactions: bool
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) -> Option[BlockObject]:
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## Returns information about a block by hash.
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##
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## data: Hash of a block.
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## fullTransactions: If true it returns the full transaction objects, if
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## false only the hashes of the transactions.
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##
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## Returns BlockObject or nil when no block was found.
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let
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blockHash = data.toHash()
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(header, body) = (await historyNetwork.getBlock(blockHash)).valueOr:
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return none(BlockObject)
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return some(BlockObject.init(header, body, fullTransactions))
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rpcServerWithProxy.rpc("eth_getBlockByNumber") do(
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quantityTag: BlockTag, fullTransactions: bool
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) -> Option[BlockObject]:
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if quantityTag.kind == bidAlias:
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let tag = quantityTag.alias.toLowerAscii
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case tag
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of "latest":
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# TODO:
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# I assume this would refer to the content in the latest optimistic update
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# in case the majority treshold is not met. And if it is met it is the
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# same as the safe version?
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raise newException(ValueError, "Latest tag not yet implemented")
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of "earliest":
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raise newException(ValueError, "Earliest tag not yet implemented")
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of "safe":
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if beaconLightClient.isNone():
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raise newException(ValueError, "Safe tag not yet implemented")
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withForkyStore(beaconLightClient.value().store[]):
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when lcDataFork > LightClientDataFork.Altair:
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let
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blockHash = forkyStore.optimistic_header.execution.block_hash
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(header, body) = (await historyNetwork.getBlock(blockHash)).valueOr:
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return none(BlockObject)
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return some(BlockObject.init(header, body, fullTransactions))
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else:
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raise newException(ValueError, "Not available before Capella - not synced?")
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of "finalized":
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if beaconLightClient.isNone():
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raise newException(ValueError, "Finalized tag not yet implemented")
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withForkyStore(beaconLightClient.value().store[]):
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when lcDataFork > LightClientDataFork.Altair:
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let
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blockHash = forkyStore.finalized_header.execution.block_hash
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(header, body) = (await historyNetwork.getBlock(blockHash)).valueOr:
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return none(BlockObject)
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return some(BlockObject.init(header, body, fullTransactions))
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else:
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raise newException(ValueError, "Not available before Capella - not synced?")
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of "pending":
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raise newException(ValueError, "Pending tag not yet implemented")
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else:
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raise newException(ValueError, "Unsupported block tag " & tag)
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else:
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let
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blockNumber = quantityTag.number.toBlockNumber
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maybeBlock = (await historyNetwork.getBlock(blockNumber)).valueOr:
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raise newException(ValueError, error)
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if maybeBlock.isNone():
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return none(BlockObject)
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else:
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let (header, body) = maybeBlock.get()
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return some(BlockObject.init(header, body, fullTransactions))
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rpcServerWithProxy.rpc("eth_getBlockTransactionCountByHash") do(
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data: rpc_types.Hash256
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) -> Quantity:
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## Returns the number of transactions in a block from a block matching the
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## given block hash.
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##
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## data: hash of a block
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## Returns integer of the number of transactions in this block.
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let
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blockHash = data.toHash()
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(_, body) = (await historyNetwork.getBlock(blockHash)).valueOr:
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raise newException(ValueError, "Could not find block with requested hash")
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var txCount: uint = 0
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for tx in body.transactions:
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txCount.inc()
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return Quantity(txCount)
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# Note: can't implement this yet as the fluffy node doesn't know the relation
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# of tx hash -> block number -> block hash, in order to get the receipt
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# from from the block with that block hash. The Canonical Indices Network
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# would need to be implemented to get this information.
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# rpcServerWithProxy.rpc("eth_getTransactionReceipt") do(
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# data: EthHashStr) -> Option[ReceiptObject]:
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rpcServerWithProxy.rpc("eth_getLogs") do(
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filterOptions: FilterOptions
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) -> seq[FilterLog]:
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if filterOptions.blockHash.isNone():
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# Currently only queries by blockhash are supported.
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# To support range queries the Indicies network is required.
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raise newException(
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ValueError,
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"Unsupported query: Only `blockHash` queries are currently supported",
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)
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let hash = ethHash filterOptions.blockHash.unsafeGet()
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let header = (await historyNetwork.getVerifiedBlockHeader(hash)).valueOr:
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raise newException(ValueError, "Could not find header with requested hash")
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if headerBloomFilter(header, filterOptions.address, filterOptions.topics):
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# TODO: These queries could be done concurrently, investigate if there
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# are no assumptions about usage of concurrent queries on portal
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# wire protocol level
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let
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body = (await historyNetwork.getBlockBody(hash, header)).valueOr:
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raise newException(ValueError, "Could not find block body for requested hash")
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receipts = (await historyNetwork.getReceipts(hash, header)).valueOr:
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raise newException(ValueError, "Could not find receipts for requested hash")
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logs = deriveLogs(header, body.transactions, receipts)
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filteredLogs = filterLogs(logs, filterOptions.address, filterOptions.topics)
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return filteredLogs
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else:
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# bloomfilter returned false, there are no logs matching the criteria
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return @[]
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