aboutsummaryrefslogtreecommitdiffstats
path: root/src/web3_wrapper.ts
diff options
context:
space:
mode:
authorFabio Berger <me@fabioberger.com>2017-11-13 11:17:18 +0800
committerFabio Berger <me@fabioberger.com>2017-11-13 11:17:18 +0800
commitc4ee2d73865a1444c079b9e2836b7630a0adf03e (patch)
treeb9c7794e7022fb189675d914f5fe58dcabd67dec /src/web3_wrapper.ts
parenta74ec0effa818a86233fe64cb0dad2c61bbb4bb6 (diff)
downloaddexon-sol-tools-c4ee2d73865a1444c079b9e2836b7630a0adf03e.tar
dexon-sol-tools-c4ee2d73865a1444c079b9e2836b7630a0adf03e.tar.gz
dexon-sol-tools-c4ee2d73865a1444c079b9e2836b7630a0adf03e.tar.bz2
dexon-sol-tools-c4ee2d73865a1444c079b9e2836b7630a0adf03e.tar.lz
dexon-sol-tools-c4ee2d73865a1444c079b9e2836b7630a0adf03e.tar.xz
dexon-sol-tools-c4ee2d73865a1444c079b9e2836b7630a0adf03e.tar.zst
dexon-sol-tools-c4ee2d73865a1444c079b9e2836b7630a0adf03e.zip
Switch over to Lerna + Yarn Workspaces setup for a mono-repo approach
Diffstat (limited to 'src/web3_wrapper.ts')
-rw-r--r--src/web3_wrapper.ts172
1 files changed, 0 insertions, 172 deletions
diff --git a/src/web3_wrapper.ts b/src/web3_wrapper.ts
deleted file mode 100644
index c937f9288..000000000
--- a/src/web3_wrapper.ts
+++ /dev/null
@@ -1,172 +0,0 @@
-import * as _ from 'lodash';
-import * as Web3 from 'web3';
-import BigNumber from 'bignumber.js';
-import promisify = require('es6-promisify');
-import {ZeroExError, Artifact, TransactionReceipt} from './types';
-import {Contract} from './contract';
-
-export class Web3Wrapper {
- private web3: Web3;
- private defaults: Partial<Web3.TxData>;
- private networkIdIfExists?: number;
- private jsonRpcRequestId: number;
- constructor(provider: Web3.Provider, defaults?: Partial<Web3.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 setProvider(provider: Web3.Provider) {
- delete this.networkIdIfExists;
- 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(this.web3.version.getNode)();
- return nodeVersion;
- }
- public async getTransactionReceiptAsync(txHash: string): Promise<TransactionReceipt> {
- const transactionReceipt = await promisify(this.web3.eth.getTransactionReceipt)(txHash);
- transactionReceipt.status = this.normalizeTxReceiptStatus(transactionReceipt.status);
- return transactionReceipt;
- }
- public getCurrentProvider(): Web3.Provider {
- return this.web3.currentProvider;
- }
- public async getNetworkIdIfExistsAsync(): Promise<number|undefined> {
- if (!_.isUndefined(this.networkIdIfExists)) {
- return this.networkIdIfExists;
- }
-
- try {
- const networkId = await this.getNetworkAsync();
- this.networkIdIfExists = Number(networkId);
- return this.networkIdIfExists;
- } catch (err) {
- return undefined;
- }
- }
- public async getContractInstanceFromArtifactAsync<A extends Web3.ContractInstance>(artifact: Artifact,
- address?: string): Promise<A> {
- let contractAddress: string;
- if (_.isUndefined(address)) {
- const networkIdIfExists = await this.getNetworkIdIfExistsAsync();
- if (_.isUndefined(networkIdIfExists)) {
- throw new Error(ZeroExError.NoNetworkId);
- }
- if (_.isUndefined(artifact.networks[networkIdIfExists])) {
- throw new Error(ZeroExError.ContractNotDeployedOnNetwork);
- }
- contractAddress = artifact.networks[networkIdIfExists].address.toLowerCase();
- } else {
- contractAddress = address;
- }
- const doesContractExist = await this.doesContractExistAtAddressAsync(contractAddress);
- if (!doesContractExist) {
- throw new Error(ZeroExError.ContractDoesNotExist);
- }
- const contractInstance = this.getContractInstance<A>(
- 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(this.web3.eth.getBalance)(owner);
- balanceInWei = new BigNumber(balanceInWei);
- return balanceInWei;
- }
- public async doesContractExistAtAddressAsync(address: string): Promise<boolean> {
- const code = await promisify(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(this.web3.eth.sign)(address, message);
- return signData;
- }
- public async getBlockNumberAsync(): Promise<number> {
- const blockNumber = await promisify(this.web3.eth.getBlockNumber)();
- return blockNumber;
- }
- public async getBlockAsync(blockParam: string|Web3.BlockParam): Promise<Web3.BlockWithoutTransactionData> {
- const block = await promisify(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: string[] = await promisify(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 logs = await this.sendRawPayloadAsync(payload);
- return logs;
- }
- private getContractInstance<A extends Web3.ContractInstance>(abi: Web3.ContractAbi, address: string): A {
- const web3ContractInstance = this.web3.eth.contract(abi).at(address);
- const contractInstance = new Contract(web3ContractInstance, this.defaults) as any as A;
- return contractInstance;
- }
- private async getNetworkAsync(): Promise<number> {
- const networkId = await promisify(this.web3.version.getNetwork)();
- return networkId;
- }
- private async sendRawPayloadAsync(payload: Web3.JSONRPCRequestPayload): Promise<any> {
- const sendAsync = this.web3.currentProvider.sendAsync.bind(this.web3.currentProvider);
- const response = await promisify(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;
- }
- }
-}