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-rw-r--r--packages/website/ts/blockchain.ts359
1 files changed, 204 insertions, 155 deletions
diff --git a/packages/website/ts/blockchain.ts b/packages/website/ts/blockchain.ts
index 5530701c0..d53994c0c 100644
--- a/packages/website/ts/blockchain.ts
+++ b/packages/website/ts/blockchain.ts
@@ -37,10 +37,10 @@ import {
EtherscanLinkSuffixes,
ProviderType,
Side,
+ SideToAssetToken,
SignatureData,
Token,
TokenByAddress,
- TokenStateByAddress,
} from 'ts/types';
import { configs } from 'ts/utils/configs';
import { constants } from 'ts/utils/constants';
@@ -54,6 +54,7 @@ import FilterSubprovider = require('web3-provider-engine/subproviders/filters');
import * as MintableArtifacts from '../contracts/Mintable.json';
const BLOCK_NUMBER_BACK_TRACK = 50;
+const GWEI_IN_WEI = 1000000000;
export class Blockchain {
public networkId: number;
@@ -64,8 +65,9 @@ export class Blockchain {
private _exchangeAddress: string;
private _userAddress: string;
private _cachedProvider: Web3.Provider;
+ private _cachedProviderNetworkId: number;
private _ledgerSubprovider: LedgerWalletSubprovider;
- private _zrxPollIntervalId: NodeJS.Timer;
+ private _defaultGasPrice: BigNumber;
private static async _onPageLoadAsync(): Promise<void> {
if (document.readyState === 'complete') {
return; // Already loaded
@@ -111,7 +113,7 @@ export class Blockchain {
// injected into their browser.
provider = new ProviderEngine();
provider.addProvider(new FilterSubprovider());
- const networkId = configs.IS_MAINNET_ENABLED ? constants.NETWORK_ID_MAINNET : constants.NETWORK_ID_TESTNET;
+ const networkId = configs.IS_MAINNET_ENABLED ? constants.NETWORK_ID_MAINNET : constants.NETWORK_ID_KOVAN;
provider.addProvider(new RedundantRPCSubprovider(configs.PUBLIC_NODE_URLS_BY_NETWORK_ID[networkId]));
provider.start();
}
@@ -121,6 +123,10 @@ export class Blockchain {
constructor(dispatcher: Dispatcher, isSalePage: boolean = false) {
this._dispatcher = dispatcher;
this._userAddress = '';
+ const defaultGasPrice = GWEI_IN_WEI * 30;
+ this._defaultGasPrice = new BigNumber(defaultGasPrice);
+ // tslint:disable-next-line:no-floating-promises
+ this._updateDefaultGasPriceAsync();
// tslint:disable-next-line:no-floating-promises
this._onPageLoadInitFireAndForgetAsync();
}
@@ -133,14 +139,14 @@ export class Blockchain {
} else if (this.networkId !== newNetworkId) {
this.networkId = newNetworkId;
this._dispatcher.encounteredBlockchainError(BlockchainErrs.NoError);
- await this._fetchTokenInformationAsync();
+ await this.fetchTokenInformationAsync();
await this._rehydrateStoreWithContractEvents();
}
}
public async userAddressUpdatedFireAndForgetAsync(newUserAddress: string) {
if (this._userAddress !== newUserAddress) {
this._userAddress = newUserAddress;
- await this._fetchTokenInformationAsync();
+ await this.fetchTokenInformationAsync();
await this._rehydrateStoreWithContractEvents();
}
}
@@ -180,84 +186,96 @@ export class Blockchain {
}
this._ledgerSubprovider.setPathIndex(pathIndex);
}
- public async providerTypeUpdatedFireAndForgetAsync(providerType: ProviderType) {
+ public async updateProviderToLedgerAsync(networkId: number) {
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();
- const ledgerWalletConfigs = {
- networkId: this.networkId,
- ledgerEthereumClientFactoryAsync: ledgerEthereumBrowserClientFactoryAsync,
- };
- this._ledgerSubprovider = new LedgerSubprovider(ledgerWalletConfigs);
- provider.addProvider(this._ledgerSubprovider);
- provider.addProvider(new FilterSubprovider());
- const networkId = configs.IS_MAINNET_ENABLED
- ? constants.NETWORK_ID_MAINNET
- : constants.NETWORK_ID_TESTNET;
- provider.addProvider(new RedundantRPCSubprovider(configs.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);
- this._zeroEx.setProvider(provider, networkId);
- await this._postInstantiationOrUpdatingProviderZeroExAsync();
- break;
- }
+ const isU2FSupported = await utils.isU2FSupportedAsync();
+ if (!isU2FSupported) {
+ throw new Error('Cannot update providerType to LEDGER without U2F support');
+ }
- 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);
- this._zeroEx.setProvider(provider, this.networkId);
- await this._postInstantiationOrUpdatingProviderZeroExAsync();
- delete this._ledgerSubprovider;
- delete this._cachedProvider;
- break;
- }
+ // Cache injected provider so that we can switch the user back to it easily
+ if (_.isUndefined(this._cachedProvider)) {
+ this._cachedProvider = this._web3Wrapper.getProviderObj();
+ this._cachedProviderNetworkId = this.networkId;
+ }
- default:
- throw utils.spawnSwitchErr('providerType', providerType);
+ this._web3Wrapper.destroy();
+
+ this._userAddress = '';
+ this._dispatcher.updateUserAddress(''); // Clear old userAddress
+
+ const provider = new ProviderEngine();
+ const ledgerWalletConfigs = {
+ networkId,
+ ledgerEthereumClientFactoryAsync: ledgerEthereumBrowserClientFactoryAsync,
+ };
+ this._ledgerSubprovider = new LedgerSubprovider(ledgerWalletConfigs);
+ provider.addProvider(this._ledgerSubprovider);
+ provider.addProvider(new FilterSubprovider());
+ provider.addProvider(new RedundantRPCSubprovider(configs.PUBLIC_NODE_URLS_BY_NETWORK_ID[networkId]));
+ provider.start();
+ this.networkId = networkId;
+ this._dispatcher.updateNetworkId(this.networkId);
+ const shouldPollUserAddress = false;
+ this._web3Wrapper = new Web3Wrapper(this._dispatcher, provider, this.networkId, shouldPollUserAddress);
+ this._zeroEx.setProvider(provider, this.networkId);
+ await this._postInstantiationOrUpdatingProviderZeroExAsync();
+ this._web3Wrapper.startEmittingNetworkConnectionAndUserBalanceState();
+ this._dispatcher.updateProviderType(ProviderType.Ledger);
+ }
+ public async updateProviderToInjectedAsync() {
+ utils.assert(!_.isUndefined(this._zeroEx), 'ZeroEx must be instantiated.');
+
+ if (_.isUndefined(this._cachedProvider)) {
+ return; // Going from injected to injected, so we noop
}
- await this._fetchTokenInformationAsync();
+ this._web3Wrapper.destroy();
+
+ const provider = this._cachedProvider;
+ this.networkId = this._cachedProviderNetworkId;
+
+ const shouldPollUserAddress = true;
+ this._web3Wrapper = new Web3Wrapper(this._dispatcher, provider, this.networkId, shouldPollUserAddress);
+
+ this._userAddress = await this._web3Wrapper.getFirstAccountIfExistsAsync();
+
+ this._zeroEx.setProvider(provider, this.networkId);
+ await this._postInstantiationOrUpdatingProviderZeroExAsync();
+
+ await this.fetchTokenInformationAsync();
+ this._web3Wrapper.startEmittingNetworkConnectionAndUserBalanceState();
+ this._dispatcher.updateProviderType(ProviderType.Injected);
+ delete this._ledgerSubprovider;
+ delete this._cachedProvider;
}
public async setProxyAllowanceAsync(token: Token, amountInBaseUnits: BigNumber): Promise<void> {
utils.assert(this.isValidAddress(token.address), BlockchainCallErrs.TokenAddressIsInvalid);
utils.assert(this._doesUserAddressExist(), BlockchainCallErrs.UserHasNoAssociatedAddresses);
utils.assert(!_.isUndefined(this._zeroEx), 'ZeroEx must be instantiated.');
+ this._showFlashMessageIfLedger();
const txHash = await this._zeroEx.token.setProxyAllowanceAsync(
token.address,
this._userAddress,
amountInBaseUnits,
+ {
+ gasPrice: this._defaultGasPrice,
+ },
);
await this._showEtherScanLinkAndAwaitTransactionMinedAsync(txHash);
- const allowance = amountInBaseUnits;
- this._dispatcher.replaceTokenAllowanceByAddress(token.address, allowance);
}
public async transferAsync(token: Token, toAddress: string, amountInBaseUnits: BigNumber): Promise<void> {
+ this._showFlashMessageIfLedger();
const txHash = await this._zeroEx.token.transferAsync(
token.address,
this._userAddress,
toAddress,
amountInBaseUnits,
+ {
+ gasPrice: this._defaultGasPrice,
+ },
);
await this._showEtherScanLinkAndAwaitTransactionMinedAsync(txHash);
const etherScanLinkIfExists = utils.getEtherScanLinkIfExists(txHash, this.networkId, EtherscanLinkSuffixes.Tx);
@@ -309,11 +327,15 @@ export class Blockchain {
const shouldThrowOnInsufficientBalanceOrAllowance = true;
+ this._showFlashMessageIfLedger();
const txHash = await this._zeroEx.exchange.fillOrderAsync(
signedOrder,
fillTakerTokenAmount,
shouldThrowOnInsufficientBalanceOrAllowance,
this._userAddress,
+ {
+ gasPrice: this._defaultGasPrice,
+ },
);
const receipt = await this._showEtherScanLinkAndAwaitTransactionMinedAsync(txHash);
const logs: Array<LogWithDecodedArgs<ExchangeContractEventArgs>> = receipt.logs as any;
@@ -324,7 +346,10 @@ export class Blockchain {
return filledTakerTokenAmount;
}
public async cancelOrderAsync(signedOrder: SignedOrder, cancelTakerTokenAmount: BigNumber): Promise<BigNumber> {
- const txHash = await this._zeroEx.exchange.cancelOrderAsync(signedOrder, cancelTakerTokenAmount);
+ this._showFlashMessageIfLedger();
+ 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);
@@ -368,22 +393,25 @@ export class Blockchain {
const [currBalance] = await this.getTokenBalanceAndAllowanceAsync(this._userAddress, token.address);
- this._zrxPollIntervalId = intervalUtils.setAsyncExcludingInterval(
- async () => {
- const [balance] = await this.getTokenBalanceAndAllowanceAsync(this._userAddress, token.address);
- if (!balance.eq(currBalance)) {
- this._dispatcher.replaceTokenBalanceByAddress(token.address, balance);
- intervalUtils.clearAsyncExcludingInterval(this._zrxPollIntervalId);
- delete this._zrxPollIntervalId;
- }
- },
- 5000,
- (err: Error) => {
- utils.consoleLog(`Polling tokenBalance failed: ${err}`);
- intervalUtils.clearAsyncExcludingInterval(this._zrxPollIntervalId);
- delete this._zrxPollIntervalId;
- },
- );
+ const newTokenBalancePromise = new Promise((resolve: (balance: BigNumber) => void, reject) => {
+ const tokenPollInterval = intervalUtils.setAsyncExcludingInterval(
+ async () => {
+ const [balance] = await this.getTokenBalanceAndAllowanceAsync(this._userAddress, token.address);
+ if (!balance.eq(currBalance)) {
+ intervalUtils.clearAsyncExcludingInterval(tokenPollInterval);
+ resolve(balance);
+ }
+ },
+ 5000,
+ (err: Error) => {
+ utils.consoleLog(`Polling tokenBalance failed: ${err}`);
+ intervalUtils.clearAsyncExcludingInterval(tokenPollInterval);
+ reject(err);
+ },
+ );
+ });
+
+ return newTokenBalancePromise;
}
public async signOrderHashAsync(orderHash: string): Promise<SignatureData> {
utils.assert(!_.isUndefined(this._zeroEx), 'ZeroEx must be instantiated.');
@@ -393,7 +421,21 @@ export class Blockchain {
if (_.isUndefined(makerAddress)) {
throw new Error('Tried to send a sign request but user has no associated addresses');
}
- const ecSignature = await this._zeroEx.signOrderHashAsync(orderHash, makerAddress);
+
+ this._showFlashMessageIfLedger();
+ const nodeVersion = await this._web3Wrapper.getNodeVersionAsync();
+ const isParityNode = utils.isParityNode(nodeVersion);
+ const isTestRpc = utils.isTestRpc(nodeVersion);
+ const isLedgerSigner = !_.isUndefined(this._ledgerSubprovider);
+ let shouldAddPersonalMessagePrefix = true;
+ if ((isParityNode && !isLedgerSigner) || isTestRpc || isLedgerSigner) {
+ shouldAddPersonalMessagePrefix = false;
+ }
+ const ecSignature = await this._zeroEx.signOrderHashAsync(
+ orderHash,
+ makerAddress,
+ shouldAddPersonalMessagePrefix,
+ );
const signatureData = _.extend({}, ecSignature, {
hash: orderHash,
});
@@ -404,11 +446,11 @@ export class Blockchain {
utils.assert(this._doesUserAddressExist(), BlockchainCallErrs.UserHasNoAssociatedAddresses);
const mintableContract = await this._instantiateContractIfExistsAsync(MintableArtifacts, token.address);
+ this._showFlashMessageIfLedger();
await mintableContract.mint(constants.MINT_AMOUNT, {
from: this._userAddress,
+ gasPrice: this._defaultGasPrice,
});
- const balanceDelta = constants.MINT_AMOUNT;
- this._dispatcher.updateTokenBalanceByAddress(token.address, balanceDelta);
}
public async getBalanceInEthAsync(owner: string): Promise<BigNumber> {
const balance = await this._web3Wrapper.getBalanceInEthAsync(owner);
@@ -418,14 +460,20 @@ export class Blockchain {
utils.assert(!_.isUndefined(this._zeroEx), 'ZeroEx must be instantiated.');
utils.assert(this._doesUserAddressExist(), BlockchainCallErrs.UserHasNoAssociatedAddresses);
- const txHash = await this._zeroEx.etherToken.depositAsync(etherTokenAddress, amount, this._userAddress);
+ this._showFlashMessageIfLedger();
+ 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> {
utils.assert(!_.isUndefined(this._zeroEx), 'ZeroEx must be instantiated.');
utils.assert(this._doesUserAddressExist(), BlockchainCallErrs.UserHasNoAssociatedAddresses);
- const txHash = await this._zeroEx.etherToken.withdrawAsync(etherTokenAddress, amount, this._userAddress);
+ this._showFlashMessageIfLedger();
+ const txHash = await this._zeroEx.etherToken.withdrawAsync(etherTokenAddress, amount, this._userAddress, {
+ gasPrice: this._defaultGasPrice,
+ });
await this._showEtherScanLinkAndAwaitTransactionMinedAsync(txHash);
}
public async doesContractExistAtAddressAsync(address: string) {
@@ -451,22 +499,6 @@ export class Blockchain {
}
return [balance, allowance];
}
- public async updateTokenBalancesAndAllowancesAsync(tokens: Token[]) {
- const tokenStateByAddress: TokenStateByAddress = {};
- for (const token of tokens) {
- let balance = new BigNumber(0);
- let allowance = new BigNumber(0);
- if (this._doesUserAddressExist()) {
- [balance, allowance] = await this.getTokenBalanceAndAllowanceAsync(this._userAddress, token.address);
- }
- const tokenState = {
- balance,
- allowance,
- };
- tokenStateByAddress[token.address] = tokenState;
- }
- this._dispatcher.updateTokenStateByAddress(tokenStateByAddress);
- }
public async getUserAccountsAsync() {
utils.assert(!_.isUndefined(this._zeroEx), 'ZeroEx must be instantiated.');
const userAccountsIfExists = await this._zeroEx.getAvailableAddressesAsync();
@@ -479,10 +511,59 @@ export class Blockchain {
this._web3Wrapper.updatePrevUserAddress(newUserAddress);
}
public destroy() {
- intervalUtils.clearAsyncExcludingInterval(this._zrxPollIntervalId);
this._web3Wrapper.destroy();
this._stopWatchingExchangeLogFillEvents();
}
+ public async fetchTokenInformationAsync() {
+ utils.assert(
+ !_.isUndefined(this.networkId),
+ 'Cannot call fetchTokenInformationAsync if disconnected from Ethereum node',
+ );
+
+ this._dispatcher.updateBlockchainIsLoaded(false);
+
+ const tokenRegistryTokensByAddress = await this._getTokenRegistryTokensByAddressAsync();
+
+ const trackedTokensByAddress = trackedTokenStorage.getTrackedTokensByAddress(this._userAddress, this.networkId);
+ const tokenRegistryTokens = _.values(tokenRegistryTokensByAddress);
+ if (_.isEmpty(trackedTokensByAddress)) {
+ _.each(configs.DEFAULT_TRACKED_TOKEN_SYMBOLS, symbol => {
+ const token = _.find(tokenRegistryTokens, t => t.symbol === symbol);
+ token.isTracked = true;
+ trackedTokensByAddress[token.address] = token;
+ });
+ _.each(trackedTokensByAddress, (token: Token, address: string) => {
+ trackedTokenStorage.addTrackedTokenToUser(this._userAddress, this.networkId, token);
+ });
+ } else {
+ // Properly set all tokenRegistry tokens `isTracked` to true if they are in the existing trackedTokens array
+ _.each(trackedTokensByAddress, (trackedToken: Token, address: string) => {
+ if (!_.isUndefined(tokenRegistryTokensByAddress[address])) {
+ tokenRegistryTokensByAddress[address].isTracked = true;
+ }
+ });
+ }
+ const allTokensByAddress = {
+ ...tokenRegistryTokensByAddress,
+ ...trackedTokensByAddress,
+ };
+ const allTokens = _.values(allTokensByAddress);
+ const mostPopularTradingPairTokens: Token[] = [
+ _.find(allTokens, { symbol: configs.DEFAULT_TRACKED_TOKEN_SYMBOLS[0] }),
+ _.find(allTokens, { symbol: configs.DEFAULT_TRACKED_TOKEN_SYMBOLS[1] }),
+ ];
+ const sideToAssetToken: SideToAssetToken = {
+ [Side.Deposit]: {
+ address: mostPopularTradingPairTokens[0].address,
+ },
+ [Side.Receive]: {
+ address: mostPopularTradingPairTokens[1].address,
+ },
+ };
+ this._dispatcher.batchDispatch(allTokensByAddress, this.networkId, this._userAddress, sideToAssetToken);
+
+ this._dispatcher.updateBlockchainIsLoaded(true);
+ }
private async _showEtherScanLinkAndAwaitTransactionMinedAsync(
txHash: string,
): Promise<TransactionReceiptWithDecodedLogs> {
@@ -665,17 +746,23 @@ export class Blockchain {
}
const provider = await Blockchain._getProviderAsync(injectedWeb3, networkIdIfExists);
- const networkId = !_.isUndefined(networkIdIfExists)
+ this.networkId = !_.isUndefined(networkIdIfExists)
? networkIdIfExists
- : configs.IS_MAINNET_ENABLED ? constants.NETWORK_ID_MAINNET : constants.NETWORK_ID_TESTNET;
+ : configs.IS_MAINNET_ENABLED ? constants.NETWORK_ID_MAINNET : constants.NETWORK_ID_KOVAN;
+ this._dispatcher.updateNetworkId(this.networkId);
const zeroExConfigs = {
- networkId,
+ networkId: this.networkId,
};
this._zeroEx = new ZeroEx(provider, zeroExConfigs);
this._updateProviderName(injectedWeb3);
const shouldPollUserAddress = true;
- this._web3Wrapper = new Web3Wrapper(this._dispatcher, provider, networkId, shouldPollUserAddress);
+ this._web3Wrapper = new Web3Wrapper(this._dispatcher, provider, this.networkId, shouldPollUserAddress);
await this._postInstantiationOrUpdatingProviderZeroExAsync();
+ this._userAddress = await this._web3Wrapper.getFirstAccountIfExistsAsync();
+ this._dispatcher.updateUserAddress(this._userAddress);
+ await this.fetchTokenInformationAsync();
+ this._web3Wrapper.startEmittingNetworkConnectionAndUserBalanceState();
+ await this._rehydrateStoreWithContractEvents();
}
// This method should always be run after instantiating or updating the provider
// of the ZeroEx instance.
@@ -690,60 +777,6 @@ export class Blockchain {
: constants.PROVIDER_NAME_PUBLIC;
this._dispatcher.updateInjectedProviderName(providerName);
}
- private async _fetchTokenInformationAsync() {
- utils.assert(
- !_.isUndefined(this.networkId),
- 'Cannot call fetchTokenInformationAsync if disconnected from Ethereum node',
- );
-
- this._dispatcher.updateBlockchainIsLoaded(false);
- this._dispatcher.clearTokenByAddress();
-
- const tokenRegistryTokensByAddress = await this._getTokenRegistryTokensByAddressAsync();
-
- // HACK: We need to fetch the userAddress here because otherwise we cannot save the
- // tracked tokens in localStorage under the users address nor 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);
- }
-
- let trackedTokensIfExists = trackedTokenStorage.getTrackedTokensIfExists(this._userAddress, this.networkId);
- const tokenRegistryTokens = _.values(tokenRegistryTokensByAddress);
- if (_.isUndefined(trackedTokensIfExists)) {
- trackedTokensIfExists = _.map(configs.DEFAULT_TRACKED_TOKEN_SYMBOLS, symbol => {
- const token = _.find(tokenRegistryTokens, t => t.symbol === symbol);
- token.isTracked = true;
- return token;
- });
- _.each(trackedTokensIfExists, token => {
- trackedTokenStorage.addTrackedTokenToUser(this._userAddress, this.networkId, token);
- });
- } else {
- // Properly set all tokenRegistry tokens `isTracked` to true if they are in the existing trackedTokens array
- _.each(trackedTokensIfExists, trackedToken => {
- if (!_.isUndefined(tokenRegistryTokensByAddress[trackedToken.address])) {
- tokenRegistryTokensByAddress[trackedToken.address].isTracked = true;
- }
- });
- }
- const allTokens = _.uniq([...tokenRegistryTokens, ...trackedTokensIfExists]);
- this._dispatcher.updateTokenByAddress(allTokens);
-
- // Get balance/allowance for tracked tokens
- await this.updateTokenBalancesAndAllowancesAsync(trackedTokensIfExists);
-
- const mostPopularTradingPairTokens: Token[] = [
- _.find(allTokens, { symbol: configs.DEFAULT_TRACKED_TOKEN_SYMBOLS[0] }),
- _.find(allTokens, { symbol: configs.DEFAULT_TRACKED_TOKEN_SYMBOLS[1] }),
- ];
- this._dispatcher.updateChosenAssetTokenAddress(Side.Deposit, mostPopularTradingPairTokens[0].address);
- this._dispatcher.updateChosenAssetTokenAddress(Side.Receive, mostPopularTradingPairTokens[1].address);
- this._dispatcher.updateBlockchainIsLoaded(true);
- }
private async _instantiateContractIfExistsAsync(artifact: any, address?: string): Promise<ContractInstance> {
const c = await contract(artifact);
const providerObj = this._web3Wrapper.getProviderObj();
@@ -779,4 +812,20 @@ export class Blockchain {
}
}
}
+ private _showFlashMessageIfLedger() {
+ if (!_.isUndefined(this._ledgerSubprovider)) {
+ 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