275 lines
10 KiB
Nim
275 lines
10 KiB
Nim
# Nimbus
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# Copyright (c) 2021-2022 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: [Defect].}
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import
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std/[times, sequtils],
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json_rpc/[rpcproxy, rpcserver], nimcrypto/[hash, keccak], stew/byteutils,
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web3/conversions, # sigh, for FixedBytes marshalling
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eth/[common/eth_types, rlp],
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../../nimbus/rpc/[rpc_types, hexstrings, filters],
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../../nimbus/transaction,
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../network/history/[history_network, history_content]
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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: array[32, byte]): Hash256 =
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result.data = value
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func toHash*(value: EthHashStr): Hash256 {.raises: [Defect, ValueError].} =
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hexToPaddedByteArray[32](value.string).toHash
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func init*(
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T: type TransactionObject,
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tx: Transaction, header: BlockHeader, txIndex: int):
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T {.raises: [Defect, ValidationError].} =
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TransactionObject(
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blockHash: some(header.blockHash),
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blockNumber: some(encodeQuantity(header.blockNumber)),
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`from`: tx.getSender(),
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gas: encodeQuantity(tx.gasLimit.uint64),
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gasPrice: encodeQuantity(tx.gasPrice.uint64),
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hash: tx.rlpHash,
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input: tx.payload,
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nonce: encodeQuantity(tx.nonce.uint64),
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to: some(tx.destination),
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transactionIndex: some(encodeQuantity(txIndex.uint64)),
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value: encodeQuantity(tx.value),
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v: encodeQuantity(tx.V.uint),
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r: encodeQuantity(tx.R),
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s: encodeQuantity(tx.S)
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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: BlockHeader, body: BlockBody,
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fullTx = true, isUncle = false):
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T {.raises: [Defect, ValidationError].} =
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let blockHash = header.blockHash
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var blockObject = BlockObject(
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number: some(encodeQuantity(header.blockNumber)),
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hash: some(blockHash),
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parentHash: header.parentHash,
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nonce: some(hexDataStr(header.nonce)),
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sha3Uncles: header.ommersHash,
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logsBloom: FixedBytes[256] header.bloom,
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transactionsRoot: header.txRoot,
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stateRoot: header.stateRoot,
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receiptsRoot: header.receiptRoot,
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miner: header.coinbase,
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difficulty: encodeQuantity(header.difficulty),
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extraData: hexDataStr(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: encodeQuantity(UInt256.low()),
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gasLimit: encodeQuantity(header.gasLimit.uint64),
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gasUsed: encodeQuantity(header.gasUsed.uint64),
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timestamp: encodeQuantity(header.timeStamp.toUnix.uint64)
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)
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let size = sizeof(BlockHeader) - sizeof(Blob) + header.extraData.len
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blockObject.size = encodeQuantity(size.uint)
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if not isUncle:
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blockObject.uncles =
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body.uncles.map(proc(h: BlockHeader): Hash256 = h.blockHash)
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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 %(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 %(keccak256.digest(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, historyNetwork: HistoryNetwork)
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{.raises: [Defect, CatchableError].} =
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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_getBlockByHash") do(
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data: EthHashStr, fullTransactions: bool) -> 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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blockRes = await historyNetwork.getBlock(1'u16, blockHash)
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if blockRes.isNone():
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return none(BlockObject)
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else:
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let (header, body) = blockRes.unsafeGet()
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return some(BlockObject.init(header, body))
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rpcServerWithProxy.rpc("eth_getBlockTransactionCountByHash") do(
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data: EthHashStr) -> HexQuantityStr:
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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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blockRes = await historyNetwork.getBlock(1'u16, blockHash)
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if blockRes.isNone():
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raise newException(ValueError, "Could not find block with requested hash")
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else:
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let (_, body) = blockRes.unsafeGet()
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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 encodeQuantity(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(filterOptions: FilterOptions) -> seq[FilterLog]:
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if filterOptions.blockhash.isNone():
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# currently only queries with provided blockhash are supported. To support
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# range queries it would require Indicies network.
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raise newException(ValueError, "Unsupported query. Field `blockhash` needs to be provided")
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else:
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let hash = filterOptions.blockHash.unsafeGet()
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let maybeHeader = await historyNetwork.getBlockHeader(1'u16, hash)
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if maybeHeader.isNone():
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raise newException(ValueError, "Could not find header with requested hash")
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let header = maybeHeader.unsafeGet()
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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 maybeBody = await historyNetwork.getBlockBody(1'u16, hash, header)
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let maybeReceipts = await historyNetwork.getReceipts(1'u16, hash, header)
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if maybeBody.isSome() and maybeReceipts.isSome():
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let body = maybeBody.unsafeGet()
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let receipts = maybeReceipts.unsafeGet()
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let logs = deriveLogs(header, body.transactions, receipts)
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let filteredLogs = filterLogs(logs, filterOptions.address, filterOptions.topics)
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return filteredLogs
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else:
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if maybeBody.isNone():
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raise newException(ValueError, "Could not find body for requested hash")
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else:
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raise newException(ValueError, "Could not find receipts for requested hash")
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else:
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# bloomfilter returned false, we do known that there is no logs matching
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# given criteria
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return @[]
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