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Diffstat (limited to 'packages/0x.js/src/web3_wrapper.ts')
-rw-r--r-- | packages/0x.js/src/web3_wrapper.ts | 202 |
1 files changed, 0 insertions, 202 deletions
diff --git a/packages/0x.js/src/web3_wrapper.ts b/packages/0x.js/src/web3_wrapper.ts deleted file mode 100644 index 6a6b4e760..000000000 --- a/packages/0x.js/src/web3_wrapper.ts +++ /dev/null @@ -1,202 +0,0 @@ -import BigNumber from 'bignumber.js'; -import * as _ from 'lodash'; -import * as Web3 from 'web3'; - -import {Artifact, ArtifactContractName, TransactionReceipt, TxData, ZeroExError} from './types'; -import {promisify} from './utils/promisify'; - -interface RawLogEntry { - logIndex: string|null; - transactionIndex: string|null; - transactionHash: string; - blockHash: string|null; - blockNumber: string|null; - address: string; - data: string; - topics: string[]; -} - -const CONTRACT_NAME_TO_NOT_FOUND_ERROR: {[contractName: string]: ZeroExError} = { - ZRX: ZeroExError.ZRXContractDoesNotExist, - EtherToken: ZeroExError.EtherTokenContractDoesNotExist, - Token: ZeroExError.TokenContractDoesNotExist, - TokenRegistry: ZeroExError.TokenRegistryContractDoesNotExist, - TokenTransferProxy: ZeroExError.TokenTransferProxyContractDoesNotExist, - Exchange: ZeroExError.ExchangeContractDoesNotExist, -}; - -export class Web3Wrapper { - private web3: Web3; - private networkId: number; - private defaults: Partial<TxData>; - private jsonRpcRequestId: number; - constructor(provider: Web3.Provider, networkId: number, defaults?: Partial<TxData>) { - if (_.isUndefined((provider as any).sendAsync)) { - // Web3@1.0 provider doesn't support synchronous http requests, - // so it only has an async `send` method, instead of a `send` and `sendAsync` in web3@0.x.x` - // We re-assign the send method so that Web3@1.0 providers work with 0x.js - (provider as any).sendAsync = (provider as any).send; - } - this.web3 = new Web3(); - this.networkId = networkId; - this.web3.setProvider(provider); - this.defaults = defaults || {}; - this.jsonRpcRequestId = 0; - } - public getContractDefaults(): Partial<TxData> { - return this.defaults; - } - public setProvider(provider: Web3.Provider, networkId: number) { - this.networkId = networkId; - this.web3.setProvider(provider); - } - public isAddress(address: string): boolean { - return this.web3.isAddress(address); - } - public async isSenderAddressAvailableAsync(senderAddress: string): Promise<boolean> { - const addresses = await this.getAvailableAddressesAsync(); - return _.includes(addresses, senderAddress); - } - public async getNodeVersionAsync(): Promise<string> { - const nodeVersion = await promisify<string>(this.web3.version.getNode)(); - return nodeVersion; - } - public async getTransactionReceiptAsync(txHash: string): Promise<TransactionReceipt> { - const transactionReceipt = await promisify<TransactionReceipt>(this.web3.eth.getTransactionReceipt)(txHash); - if (!_.isNull(transactionReceipt)) { - transactionReceipt.status = this.normalizeTxReceiptStatus(transactionReceipt.status); - } - return transactionReceipt; - } - public getCurrentProvider(): Web3.Provider { - return this.web3.currentProvider; - } - public getNetworkId(): number { - return this.networkId; - } - public async getContractInstanceFromArtifactAsync( - artifact: Artifact, address?: string, - ): Promise<Web3.ContractInstance> { - let contractAddress: string; - if (_.isUndefined(address)) { - const networkId = this.getNetworkId(); - if (_.isUndefined(artifact.networks[networkId])) { - throw new Error(ZeroExError.ContractNotDeployedOnNetwork); - } - contractAddress = artifact.networks[networkId].address.toLowerCase(); - } else { - contractAddress = address; - } - const doesContractExist = await this.doesContractExistAtAddressAsync(contractAddress); - if (!doesContractExist) { - throw new Error(CONTRACT_NAME_TO_NOT_FOUND_ERROR[artifact.contract_name]); - } - const contractInstance = this.getContractInstance( - artifact.abi, contractAddress, - ); - return contractInstance; - } - public toWei(ethAmount: BigNumber): BigNumber { - const balanceWei = this.web3.toWei(ethAmount, 'ether'); - return balanceWei; - } - public async getBalanceInWeiAsync(owner: string): Promise<BigNumber> { - let balanceInWei = await promisify<BigNumber>(this.web3.eth.getBalance)(owner); - balanceInWei = new BigNumber(balanceInWei); - return balanceInWei; - } - public async doesContractExistAtAddressAsync(address: string): Promise<boolean> { - const code = await promisify<string>(this.web3.eth.getCode)(address); - // Regex matches 0x0, 0x00, 0x in order to accommodate poorly implemented clients - const codeIsEmpty = /^0x0{0,40}$/i.test(code); - return !codeIsEmpty; - } - public async signTransactionAsync(address: string, message: string): Promise<string> { - const signData = await promisify<string>(this.web3.eth.sign)(address, message); - return signData; - } - public async getBlockNumberAsync(): Promise<number> { - const blockNumber = await promisify<number>(this.web3.eth.getBlockNumber)(); - return blockNumber; - } - public async getBlockAsync(blockParam: string|Web3.BlockParam): Promise<Web3.BlockWithoutTransactionData> { - const block = await promisify<Web3.BlockWithoutTransactionData>(this.web3.eth.getBlock)(blockParam); - return block; - } - public async getBlockTimestampAsync(blockParam: string|Web3.BlockParam): Promise<number> { - const {timestamp} = await this.getBlockAsync(blockParam); - return timestamp; - } - public async getAvailableAddressesAsync(): Promise<string[]> { - const addresses = await promisify<string[]>(this.web3.eth.getAccounts)(); - return addresses; - } - public async getLogsAsync(filter: Web3.FilterObject): Promise<Web3.LogEntry[]> { - let fromBlock = filter.fromBlock; - if (_.isNumber(fromBlock)) { - fromBlock = this.web3.toHex(fromBlock); - } - let toBlock = filter.toBlock; - if (_.isNumber(toBlock)) { - toBlock = this.web3.toHex(toBlock); - } - const serializedFilter = { - ...filter, - fromBlock, - toBlock, - }; - const payload = { - jsonrpc: '2.0', - id: this.jsonRpcRequestId++, - method: 'eth_getLogs', - params: [serializedFilter], - }; - const rawLogs = await this.sendRawPayloadAsync<RawLogEntry[]>(payload); - const formattedLogs = _.map(rawLogs, this.formatLog.bind(this)); - return formattedLogs; - } - private getContractInstance(abi: Web3.ContractAbi, address: string): Web3.ContractInstance { - const web3ContractInstance = this.web3.eth.contract(abi).at(address); - return web3ContractInstance; - } - private async getNetworkAsync(): Promise<number> { - const networkId = await promisify<number>(this.web3.version.getNetwork)(); - return networkId; - } - private async sendRawPayloadAsync<A>(payload: Web3.JSONRPCRequestPayload): Promise<A> { - const sendAsync = this.web3.currentProvider.sendAsync.bind(this.web3.currentProvider); - const response = await promisify<Web3.JSONRPCResponsePayload>(sendAsync)(payload); - const result = response.result; - return result; - } - private normalizeTxReceiptStatus(status: undefined|null|string|0|1): null|0|1 { - // Transaction status might have four values - // undefined - Testrpc and other old clients - // null - New clients on old transactions - // number - Parity - // hex - Geth - if (_.isString(status)) { - return this.web3.toDecimal(status) as 0|1; - } else if (_.isUndefined(status)) { - return null; - } else { - return status; - } - } - private formatLog(rawLog: RawLogEntry): Web3.LogEntry { - const formattedLog = { - ...rawLog, - logIndex: this.hexToDecimal(rawLog.logIndex), - blockNumber: this.hexToDecimal(rawLog.blockNumber), - transactionIndex: this.hexToDecimal(rawLog.transactionIndex), - }; - return formattedLog; - } - private hexToDecimal(hex: string|null): number|null { - if (_.isNull(hex)) { - return null; - } - const decimal = this.web3.toDecimal(hex); - return decimal; - } -} |