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import { addressUtils } from '@0x/utils';
import {
BlockParam,
BlockParamLiteral,
BlockWithoutTransactionData,
BlockWithTransactionData,
CallData,
CallTxDataBase,
LogEntry,
RawLogEntry,
Transaction,
TxData,
} from 'ethereum-types';
import ethUtil = require('ethereumjs-util');
import * as _ from 'lodash';
import { utils } from './utils';
import {
BlockWithoutTransactionDataRPC,
BlockWithTransactionDataRPC,
CallDataRPC,
CallTxDataBaseRPC,
TransactionRPC,
TxDataRPC,
} from './types';
/**
* Utils to convert ethereum structures from user-space format to RPC format. (marshall/unmarshall)
*/
export const marshaller = {
/**
* Unmarshall block without transaction data
* @param blockWithHexValues block to unmarshall
* @return unmarshalled block without transaction data
*/
unmarshalIntoBlockWithoutTransactionData(
blockWithHexValues: BlockWithoutTransactionDataRPC,
): BlockWithoutTransactionData {
const block = {
...blockWithHexValues,
gasLimit: utils.convertHexToNumber(blockWithHexValues.gasLimit),
gasUsed: utils.convertHexToNumber(blockWithHexValues.gasUsed),
size: utils.convertHexToNumber(blockWithHexValues.size),
timestamp: utils.convertHexToNumber(blockWithHexValues.timestamp),
number: _.isNull(blockWithHexValues.number) ? null : utils.convertHexToNumber(blockWithHexValues.number),
difficulty: utils.convertAmountToBigNumber(blockWithHexValues.difficulty),
totalDifficulty: utils.convertAmountToBigNumber(blockWithHexValues.totalDifficulty),
};
return block;
},
/**
* Unmarshall block with transaction data
* @param blockWithHexValues block to unmarshall
* @return unmarshalled block with transaction data
*/
unmarshalIntoBlockWithTransactionData(blockWithHexValues: BlockWithTransactionDataRPC): BlockWithTransactionData {
const block = {
...blockWithHexValues,
gasLimit: utils.convertHexToNumber(blockWithHexValues.gasLimit),
gasUsed: utils.convertHexToNumber(blockWithHexValues.gasUsed),
size: utils.convertHexToNumber(blockWithHexValues.size),
timestamp: utils.convertHexToNumber(blockWithHexValues.timestamp),
number: _.isNull(blockWithHexValues.number) ? null : utils.convertHexToNumber(blockWithHexValues.number),
difficulty: utils.convertAmountToBigNumber(blockWithHexValues.difficulty),
totalDifficulty: utils.convertAmountToBigNumber(blockWithHexValues.totalDifficulty),
transactions: [] as Transaction[],
};
block.transactions = _.map(blockWithHexValues.transactions, (tx: TransactionRPC) => {
const transaction = marshaller.unmarshalTransaction(tx);
return transaction;
});
return block;
},
/**
* Unmarshall transaction
* @param txRpc transaction to unmarshall
* @return unmarshalled transaction
*/
unmarshalTransaction(txRpc: TransactionRPC): Transaction {
const tx = {
...txRpc,
blockNumber: !_.isNull(txRpc.blockNumber) ? utils.convertHexToNumber(txRpc.blockNumber) : null,
transactionIndex: !_.isNull(txRpc.transactionIndex)
? utils.convertHexToNumber(txRpc.transactionIndex)
: null,
nonce: utils.convertHexToNumber(txRpc.nonce),
gas: utils.convertHexToNumber(txRpc.gas),
gasPrice: utils.convertAmountToBigNumber(txRpc.gasPrice),
value: utils.convertAmountToBigNumber(txRpc.value),
};
return tx;
},
/**
* Unmarshall transaction data
* @param txDataRpc transaction data to unmarshall
* @return unmarshalled transaction data
*/
unmarshalTxData(txDataRpc: TxDataRPC): TxData {
if (_.isUndefined(txDataRpc.from)) {
throw new Error(`txData must include valid 'from' value.`);
}
const txData = {
...txDataRpc,
value: !_.isUndefined(txDataRpc.value) ? utils.convertHexToNumber(txDataRpc.value) : undefined,
gas: !_.isUndefined(txDataRpc.gas) ? utils.convertHexToNumber(txDataRpc.gas) : undefined,
gasPrice: !_.isUndefined(txDataRpc.gasPrice) ? utils.convertHexToNumber(txDataRpc.gasPrice) : undefined,
nonce: !_.isUndefined(txDataRpc.nonce) ? utils.convertHexToNumber(txDataRpc.nonce) : undefined,
};
return txData;
},
/**
* Marshall transaction data
* @param txData transaction data to marshall
* @return marshalled transaction data
*/
marshalTxData(txData: Partial<TxData>): Partial<TxDataRPC> {
if (_.isUndefined(txData.from)) {
throw new Error(`txData must include valid 'from' value.`);
}
const callTxDataBase = {
...txData,
};
delete callTxDataBase.from;
const callTxDataBaseRPC = marshaller._marshalCallTxDataBase(callTxDataBase);
const txDataRPC = {
...callTxDataBaseRPC,
from: marshaller.marshalAddress(txData.from),
};
const prunableIfUndefined = ['gasPrice', 'gas', 'value', 'nonce'];
_.each(txDataRPC, (value: any, key: string) => {
if (_.isUndefined(value) && _.includes(prunableIfUndefined, key)) {
delete (txDataRPC as any)[key];
}
});
return txDataRPC;
},
/**
* Marshall call data
* @param callData call data to marshall
* @return marshalled call data
*/
marshalCallData(callData: Partial<CallData>): Partial<CallDataRPC> {
const callTxDataBase = {
...callData,
};
delete callTxDataBase.from;
const callTxDataBaseRPC = marshaller._marshalCallTxDataBase(callTxDataBase);
const callDataRPC = {
...callTxDataBaseRPC,
from: _.isUndefined(callData.from) ? undefined : marshaller.marshalAddress(callData.from),
};
return callDataRPC;
},
/**
* Marshall address
* @param address address to marshall
* @return marshalled address
*/
marshalAddress(address: string): string {
if (addressUtils.isAddress(address)) {
return ethUtil.addHexPrefix(address);
}
throw new Error(`Invalid address encountered: ${address}`);
},
/**
* Marshall block param
* @param blockParam block param to marshall
* @return marshalled block param
*/
marshalBlockParam(blockParam: BlockParam | string | number | undefined): string | undefined {
if (_.isUndefined(blockParam)) {
return BlockParamLiteral.Latest;
}
const encodedBlockParam = _.isNumber(blockParam) ? utils.numberToHex(blockParam) : blockParam;
return encodedBlockParam;
},
/**
* Unmarshall log
* @param rawLog log to unmarshall
* @return unmarshalled log
*/
unmarshalLog(rawLog: RawLogEntry): LogEntry {
const formattedLog = {
...rawLog,
logIndex: utils.convertHexToNumberOrNull(rawLog.logIndex),
blockNumber: utils.convertHexToNumberOrNull(rawLog.blockNumber),
transactionIndex: utils.convertHexToNumberOrNull(rawLog.transactionIndex),
};
return formattedLog;
},
_marshalCallTxDataBase(callTxDataBase: Partial<CallTxDataBase>): Partial<CallTxDataBaseRPC> {
const callTxDataBaseRPC = {
...callTxDataBase,
to: _.isUndefined(callTxDataBase.to) ? undefined : marshaller.marshalAddress(callTxDataBase.to),
gasPrice: _.isUndefined(callTxDataBase.gasPrice)
? undefined
: utils.encodeAmountAsHexString(callTxDataBase.gasPrice),
gas: _.isUndefined(callTxDataBase.gas) ? undefined : utils.encodeAmountAsHexString(callTxDataBase.gas),
value: _.isUndefined(callTxDataBase.value)
? undefined
: utils.encodeAmountAsHexString(callTxDataBase.value),
nonce: _.isUndefined(callTxDataBase.nonce)
? undefined
: utils.encodeAmountAsHexString(callTxDataBase.nonce),
};
return callTxDataBaseRPC;
},
};
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