本文整理汇总了TypeScript中ts/web3_wrapper.Web3Wrapper类的典型用法代码示例。如果您正苦于以下问题:TypeScript Web3Wrapper类的具体用法?TypeScript Web3Wrapper怎么用?TypeScript Web3Wrapper使用的例子?那么, 这里精选的类代码示例或许可以为您提供帮助。
在下文中一共展示了Web3Wrapper类的9个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的TypeScript代码示例。
示例1: providerTypeUpdatedFireAndForgetAsync
public async providerTypeUpdatedFireAndForgetAsync(providerType: ProviderType) {
utils.assert(!_.isUndefined(this.zeroEx), 'ZeroEx must be instantiated.');
// Should actually be Web3.Provider|ProviderEngine union type but it causes issues
// later on in the logic.
let provider;
switch (providerType) {
case ProviderType.LEDGER: {
const isU2FSupported = await utils.isU2FSupportedAsync();
if (!isU2FSupported) {
throw new Error('Cannot update providerType to LEDGER without U2F support');
}
// Cache injected provider so that we can switch the user back to it easily
this.cachedProvider = this.web3Wrapper.getProviderObj();
this.dispatcher.updateUserAddress(''); // Clear old userAddress
provider = new ProviderEngine();
this.ledgerSubProvider = ledgerWalletSubproviderFactory(this.getBlockchainNetworkId.bind(this));
provider.addProvider(this.ledgerSubProvider);
provider.addProvider(new FilterSubprovider());
const networkId = configs.isMainnetEnabled ?
constants.MAINNET_NETWORK_ID :
constants.TESTNET_NETWORK_ID;
provider.addProvider(new RedundantRPCSubprovider(
constants.PUBLIC_NODE_URLS_BY_NETWORK_ID[networkId],
));
provider.start();
this.web3Wrapper.destroy();
const shouldPollUserAddress = false;
this.web3Wrapper = new Web3Wrapper(this.dispatcher, provider, this.networkId, shouldPollUserAddress);
await this.zeroEx.setProviderAsync(provider);
await this.postInstantiationOrUpdatingProviderZeroExAsync();
break;
}
case ProviderType.INJECTED: {
if (_.isUndefined(this.cachedProvider)) {
return; // Going from injected to injected, so we noop
}
provider = this.cachedProvider;
const shouldPollUserAddress = true;
this.web3Wrapper = new Web3Wrapper(this.dispatcher, provider, this.networkId, shouldPollUserAddress);
await this.zeroEx.setProviderAsync(provider);
await this.postInstantiationOrUpdatingProviderZeroExAsync();
delete this.ledgerSubProvider;
delete this.cachedProvider;
break;
}
default:
throw utils.spawnSwitchErr('providerType', providerType);
}
await this.fetchTokenInformationAsync();
}
示例2: updateWeb3WrapperPrevUserAddress
// HACK: When a user is using a Ledger, we simply dispatch the selected userAddress, which
// by-passes the web3Wrapper logic for updating the prevUserAddress. We therefore need to
// manually update it. This should only be called by the LedgerConfigDialog.
public updateWeb3WrapperPrevUserAddress(newUserAddress: string) {
this.web3Wrapper.updatePrevUserAddress(newUserAddress);
}
示例3: fetchTokenInformationAsync
private async fetchTokenInformationAsync() {
utils.assert(!_.isUndefined(this.networkId),
'Cannot call fetchTokenInformationAsync if disconnected from Ethereum node');
this.dispatcher.updateBlockchainIsLoaded(false);
this.dispatcher.clearTokenByAddress();
const tokenArrays = await Promise.all([
this.getTokenRegistryTokensAsync(),
this.getCustomTokensAsync(),
]);
const tokens = _.flatten(tokenArrays);
// HACK: We need to fetch the userAddress here because otherwise we cannot fetch the token
// balances and allowances and we need to do this in order not to trigger the blockchain
// loading dialog to show up twice. First to load the contracts, and second to load the
// balances and allowances.
this.userAddress = await this.web3Wrapper.getFirstAccountIfExistsAsync();
if (!_.isEmpty(this.userAddress)) {
this.dispatcher.updateUserAddress(this.userAddress);
}
await this.updateTokenBalancesAndAllowancesAsync(tokens);
const mostPopularTradingPairTokens: Token[] = [
_.find(tokens, {symbol: configs.mostPopularTradingPairSymbols[0]}),
_.find(tokens, {symbol: configs.mostPopularTradingPairSymbols[1]}),
];
this.dispatcher.updateChosenAssetTokenAddress(Side.deposit, mostPopularTradingPairTokens[0].address);
this.dispatcher.updateChosenAssetTokenAddress(Side.receive, mostPopularTradingPairTokens[1].address);
this.dispatcher.updateBlockchainIsLoaded(true);
}
示例4:
exchangeLogFillEventEmitter.watch(async (err: Error, event: ContractEvent) => {
if (err) {
// Note: it's not entirely clear from the documentation which
// errors will be thrown by `watch`. For now, let's log the error
// to rollbar and stop watching when one occurs
errorReporter.reportAsync(err); // fire and forget
this.stopWatchingExchangeLogFillEventsAsync(); // fire and forget
return;
} else {
const args = event.args as LogFillContractEventArgs;
const isBlockPending = _.isNull(event.blockNumber);
if (!isBlockPending) {
// Hack: I've observed the behavior where a client won't register certain fill events
// and lowering the cache blockNumber fixes the issue. As a quick fix for now, simply
// set the cached blockNumber 50 below the one returned. This way, upon refreshing, a user
// would still attempt to re-fetch events from the previous 50 blocks, but won't need to
// re-fetch all events in all blocks.
// TODO: Debug if this is a race condition, and apply a more precise fix
const blockNumberToSet = event.blockNumber - 50 < 0 ? 0 : event.blockNumber - 50;
tradeHistoryStorage.setFillsLatestBlock(this.userAddress, this.networkId, blockNumberToSet);
}
const isUserMakerOrTaker = args.maker === this.userAddress ||
args.taker === this.userAddress;
if (!isUserMakerOrTaker) {
return; // We aren't interested in the fill event
}
const blockTimestamp = await this.web3Wrapper.getBlockTimestampAsync(event.blockHash);
const fill = {
filledTakerTokenAmount: args.filledTakerTokenAmount,
filledMakerTokenAmount: args.filledMakerTokenAmount,
logIndex: event.logIndex,
maker: args.maker,
orderHash: args.orderHash,
taker: args.taker,
makerToken: args.makerToken,
takerToken: args.takerToken,
paidMakerFee: args.paidMakerFee,
paidTakerFee: args.paidTakerFee,
transactionHash: event.transactionHash,
blockTimestamp,
};
tradeHistoryStorage.addFillToUser(this.userAddress, this.networkId, fill);
}
});
示例5: instantiateContractIfExistsAsync
private async instantiateContractIfExistsAsync(artifact: any, address?: string): Promise<ContractInstance> {
const c = await contract(artifact);
const providerObj = this.web3Wrapper.getProviderObj();
c.setProvider(providerObj);
const artifactNetworkConfigs = artifact.networks[this.networkId];
let contractAddress;
if (!_.isUndefined(address)) {
contractAddress = address;
} else if (!_.isUndefined(artifactNetworkConfigs)) {
contractAddress = artifactNetworkConfigs.address;
}
if (!_.isUndefined(contractAddress)) {
const doesContractExist = await this.doesContractExistAtAddressAsync(contractAddress);
if (!doesContractExist) {
utils.consoleLog(`Contract does not exist: ${artifact.contract_name} at ${contractAddress}`);
throw new Error(BlockchainCallErrs.CONTRACT_DOES_NOT_EXIST);
}
}
try {
let contractInstance;
if (_.isUndefined(address)) {
contractInstance = await c.deployed();
} else {
contractInstance = await c.at(address);
}
return contractInstance;
} catch (err) {
const errMsg = `${err}`;
utils.consoleLog(`Notice: Error encountered: ${err} ${err.stack}`);
if (_.includes(errMsg, 'not been deployed to detected network')) {
throw new Error(BlockchainCallErrs.CONTRACT_DOES_NOT_EXIST);
} else {
await errorReporter.reportAsync(err);
throw new Error(BlockchainCallErrs.UNHANDLED_ERROR);
}
}
}
示例6: destroy
public destroy() {
clearInterval(this.zrxPollIntervalId);
this.web3Wrapper.destroy();
this.stopWatchingExchangeLogFillEventsAsync(); // fire and forget
}
示例7: doesContractExistAtAddressAsync
public async doesContractExistAtAddressAsync(address: string) {
return await this.web3Wrapper.doesContractExistAtAddressAsync(address);
}
示例8: getBalanceInEthAsync
public async getBalanceInEthAsync(owner: string): Promise<BigNumber.BigNumber> {
const balance = await this.web3Wrapper.getBalanceInEthAsync(owner);
return balance;
}
示例9: isValidAddress
public isValidAddress(address: string): boolean {
const lowercaseAddress = address.toLowerCase();
return this.web3Wrapper.isAddress(lowercaseAddress);
}