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author | Leonid Logvinov <logvinov.leon@gmail.com> | 2018-02-28 04:01:12 +0800 |
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committer | Leonid Logvinov <logvinov.leon@gmail.com> | 2018-02-28 04:07:58 +0800 |
commit | 8fe844bcc9e4298cc3ced58c1abcee78de4193b3 (patch) | |
tree | 6b3fb63fb53fd6d51287b9b8a599c3eae5f46057 /packages/web3-wrapper/src/web3_wrapper.ts | |
parent | a0390956a91b2e15052d1b5ca43ef6d85d64234e (diff) | |
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Move BaseContract to web3Wrapper
Diffstat (limited to 'packages/web3-wrapper/src/web3_wrapper.ts')
-rw-r--r-- | packages/web3-wrapper/src/web3_wrapper.ts | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/packages/web3-wrapper/src/web3_wrapper.ts b/packages/web3-wrapper/src/web3_wrapper.ts new file mode 100644 index 000000000..a07805344 --- /dev/null +++ b/packages/web3-wrapper/src/web3_wrapper.ts @@ -0,0 +1,179 @@ +import { TransactionReceipt, TxData } from '@0xproject/types'; +import { BigNumber, promisify } from '@0xproject/utils'; +import * as _ from 'lodash'; +import * as Web3 from 'web3'; + +interface RawLogEntry { + logIndex: string | null; + transactionIndex: string | null; + transactionHash: string; + blockHash: string | null; + blockNumber: string | null; + address: string; + data: string; + topics: string[]; +} + +export class Web3Wrapper { + private _web3: Web3; + private _defaults: Partial<TxData>; + private _jsonRpcRequestId: number; + constructor(provider: Web3.Provider, 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._web3.setProvider(provider); + this._defaults = defaults || {}; + this._jsonRpcRequestId = 0; + } + public getContractDefaults(): Partial<TxData> { + return this._defaults; + } + public setProvider(provider: Web3.Provider) { + 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(); + const normalizedAddress = senderAddress.toLowerCase(); + return _.includes(addresses, normalizedAddress); + } + public async getNodeVersionAsync(): Promise<string> { + const nodeVersion = await promisify<string>(this._web3.version.getNode)(); + return nodeVersion; + } + public async getNetworkIdAsync(): Promise<number> { + const networkIdStr = await promisify<string>(this._web3.version.getNetwork)(); + const networkId = _.parseInt(networkIdStr); + return networkId; + } + 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 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); + // Rewrap in a new BigNumber + 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)(); + const normalizedAddresses = _.map(addresses, address => address.toLowerCase()); + return normalizedAddresses; + } + 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; + } + public getContractFromAbi(abi: Web3.ContractAbi): Web3.Contract<any> { + const web3Contract = this._web3.eth.contract(abi); + return web3Contract; + } + public async estimateGasAsync(txData: Partial<Web3.TxData>): Promise<number> { + const gas = await promisify<number>(this._web3.eth.estimateGas)(txData); + return gas; + } + public async callAsync(callData: Web3.CallData, defaultBlock?: Web3.BlockParam): Promise<string> { + const rawCalllResult = await promisify<string>(this._web3.eth.call)(callData, defaultBlock); + return rawCalllResult; + } + public async sendTransactionAsync(txData: Web3.TxData): Promise<string> { + const txHash = await promisify<string>(this._web3.eth.sendTransaction)(txData); + return txHash; + } + 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; + } +} |