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Fetch default gasPrice from our ethGasStation API mirror and set it for all transactions

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This commit is contained in:
Fabio Berger 2018-01-29 16:38:05 +01:00
parent fa6130c907
commit 72571628da
1 changed files with 34 additions and 3 deletions
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37
packages/website/ts/blockchain.ts
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@ -67,6 +67,7 @@ export class Blockchain {
private _cachedProvider: Web3.Provider;
private _cachedProviderNetworkId: number;
private _ledgerSubprovider: LedgerWalletSubprovider;
private _defaultGasPrice: BigNumber;
private static async _onPageLoadAsync(): Promise<void> {
if (document.readyState === 'complete') {
return; // Already loaded
@ -122,6 +123,9 @@ export class Blockchain {
constructor(dispatcher: Dispatcher, isSalePage: boolean = false) {
this._dispatcher = dispatcher;
this._userAddress = '';
this._defaultGasPrice = new BigNumber(30000000000);
// tslint:disable-next-line:no-floating-promises
this._updateDefaultGasPriceAsync();
// tslint:disable-next-line:no-floating-promises
this._onPageLoadInitFireAndForgetAsync();
}
@ -252,6 +256,9 @@ export class Blockchain {
token.address,
this._userAddress,
amountInBaseUnits,
{
gasPrice: this._defaultGasPrice,
},
);
await this._showEtherScanLinkAndAwaitTransactionMinedAsync(txHash);
const allowance = amountInBaseUnits;
@ -263,6 +270,9 @@ export class Blockchain {
this._userAddress,
toAddress,
amountInBaseUnits,
{
gasPrice: this._defaultGasPrice,
},
);
await this._showEtherScanLinkAndAwaitTransactionMinedAsync(txHash);
const etherScanLinkIfExists = utils.getEtherScanLinkIfExists(txHash, this.networkId, EtherscanLinkSuffixes.Tx);
@ -320,6 +330,9 @@ export class Blockchain {
fillTakerTokenAmount,
shouldThrowOnInsufficientBalanceOrAllowance,
this._userAddress,
{
gasPrice: this._defaultGasPrice,
},
);
const receipt = await this._showEtherScanLinkAndAwaitTransactionMinedAsync(txHash);
const logs: Array<LogWithDecodedArgs<ExchangeContractEventArgs>> = receipt.logs as any;
@ -331,7 +344,9 @@ export class Blockchain {
}
public async cancelOrderAsync(signedOrder: SignedOrder, cancelTakerTokenAmount: BigNumber): Promise<BigNumber> {
this._showFlashMessageIfLedger();
const txHash = await this._zeroEx.exchange.cancelOrderAsync(signedOrder, cancelTakerTokenAmount);
const txHash = await this._zeroEx.exchange.cancelOrderAsync(signedOrder, cancelTakerTokenAmount, {
gasPrice: this._defaultGasPrice,
});
const receipt = await this._showEtherScanLinkAndAwaitTransactionMinedAsync(txHash);
const logs: Array<LogWithDecodedArgs<ExchangeContractEventArgs>> = receipt.logs as any;
this._zeroEx.exchange.throwLogErrorsAsErrors(logs);
@ -418,6 +433,7 @@ export class Blockchain {
this._showFlashMessageIfLedger();
await mintableContract.mint(constants.MINT_AMOUNT, {
from: this._userAddress,
gasPrice: this._defaultGasPrice,
});
const balanceDelta = constants.MINT_AMOUNT;
}
@ -430,7 +446,9 @@ export class Blockchain {
utils.assert(this._doesUserAddressExist(), BlockchainCallErrs.UserHasNoAssociatedAddresses);
this._showFlashMessageIfLedger();
const txHash = await this._zeroEx.etherToken.depositAsync(etherTokenAddress, amount, this._userAddress);
const txHash = await this._zeroEx.etherToken.depositAsync(etherTokenAddress, amount, this._userAddress, {
gasPrice: this._defaultGasPrice,
});
await this._showEtherScanLinkAndAwaitTransactionMinedAsync(txHash);
}
public async convertWrappedEthTokensToEthAsync(etherTokenAddress: string, amount: BigNumber): Promise<void> {
@ -438,7 +456,9 @@ export class Blockchain {
utils.assert(this._doesUserAddressExist(), BlockchainCallErrs.UserHasNoAssociatedAddresses);
this._showFlashMessageIfLedger();
const txHash = await this._zeroEx.etherToken.withdrawAsync(etherTokenAddress, amount, this._userAddress);
const txHash = await this._zeroEx.etherToken.withdrawAsync(etherTokenAddress, amount, this._userAddress, {
gasPrice: this._defaultGasPrice,
});
await this._showEtherScanLinkAndAwaitTransactionMinedAsync(txHash);
}
public async doesContractExistAtAddressAsync(address: string) {
@ -779,4 +799,15 @@ export class Blockchain {
this._dispatcher.showFlashMessage('Confirm the transaction on your Ledger Nano S');
}
}
private async _updateDefaultGasPriceAsync() {
const endpoint = `${configs.BACKEND_BASE_URL}/eth_gas_station`;
const response = await fetch(endpoint);
if (response.status !== 200) {
return; // noop and we keep hard-coded default
}
const gasInfo = await response.json();
const gasPriceInGwei = new BigNumber(gasInfo.average / 10);
const gasPriceInWei = gasPriceInGwei.mul(1000000000);
this._defaultGasPrice = gasPriceInWei;
}
} // tslint:disable:max-file-line-count