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authorHsuan Lee <hsuan@cobinhood.com>2019-01-19 18:42:04 +0800
committerHsuan Lee <hsuan@cobinhood.com>2019-01-19 18:42:04 +0800
commit7ae38906926dc09bc10670c361af0d2bf0050426 (patch)
tree5fb10ae366b987db09e4ddb4bc3ba0f75404ad08 /packages/website/ts/blockchain_watcher.ts
parentb5fd3c72a08aaa6957917d74c333387a16edf66b (diff)
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Update dependency packages
Diffstat (limited to 'packages/website/ts/blockchain_watcher.ts')
-rw-r--r--packages/website/ts/blockchain_watcher.ts86
1 files changed, 0 insertions, 86 deletions
diff --git a/packages/website/ts/blockchain_watcher.ts b/packages/website/ts/blockchain_watcher.ts
deleted file mode 100644
index 835932dcd..000000000
--- a/packages/website/ts/blockchain_watcher.ts
+++ /dev/null
@@ -1,86 +0,0 @@
-import { BigNumber, intervalUtils, logUtils } from '@0x/utils';
-import { Web3Wrapper } from '@0x/web3-wrapper';
-import * as _ from 'lodash';
-import { Dispatcher } from 'ts/redux/dispatcher';
-
-export class BlockchainWatcher {
- private readonly _dispatcher: Dispatcher;
- private readonly _web3Wrapper: Web3Wrapper;
- private readonly _shouldPollUserAddress: boolean;
- private _watchBalanceIntervalId: NodeJS.Timer;
- private _prevUserEtherBalanceInWei?: BigNumber;
- private _prevUserAddressIfExists: string;
- private _prevNodeVersionIfExists: string;
- constructor(dispatcher: Dispatcher, web3Wrapper: Web3Wrapper, shouldPollUserAddress: boolean) {
- this._dispatcher = dispatcher;
- this._shouldPollUserAddress = shouldPollUserAddress;
- this._web3Wrapper = web3Wrapper;
- }
- public destroy(): void {
- this._stopEmittingUserBalanceState();
- // HACK: stop() is only available on providerEngine instances
- const provider = this._web3Wrapper.getProvider();
- if (!_.isUndefined((provider as any).stop)) {
- (provider as any).stop();
- }
- }
- // This should only be called from the LedgerConfigDialog
- public updatePrevUserAddress(userAddress: string): void {
- this._prevUserAddressIfExists = userAddress;
- }
- public async startEmittingUserBalanceStateAsync(): Promise<void> {
- if (!_.isUndefined(this._watchBalanceIntervalId)) {
- return; // we are already emitting the state
- }
- this._prevUserEtherBalanceInWei = undefined;
- await this._updateBalanceAsync();
- this._watchBalanceIntervalId = intervalUtils.setAsyncExcludingInterval(
- this._updateBalanceAsync.bind(this),
- 5000,
- (err: Error) => {
- logUtils.log(`Watching network and balances failed: ${err.stack}`);
- this._stopEmittingUserBalanceState();
- },
- );
- }
- private async _updateBalanceAsync(): Promise<void> {
- const currentNodeVersion = await this._web3Wrapper.getNodeVersionAsync();
- if (this._prevNodeVersionIfExists !== currentNodeVersion) {
- this._prevNodeVersionIfExists = currentNodeVersion;
- this._dispatcher.updateNodeVersion(currentNodeVersion);
- }
-
- if (this._shouldPollUserAddress) {
- const addresses = await this._web3Wrapper.getAvailableAddressesAsync();
- const userAddressIfExists = addresses[0];
- // Update makerAddress on network change
- if (this._prevUserAddressIfExists !== userAddressIfExists) {
- this._prevUserAddressIfExists = userAddressIfExists;
- this._dispatcher.updateUserAddress(userAddressIfExists);
- }
-
- // Check for user ether balance changes
- if (!_.isUndefined(userAddressIfExists)) {
- await this._updateUserWeiBalanceAsync(userAddressIfExists);
- }
- } else {
- // This logic is primarily for the Ledger, since we don't regularly poll for the address
- // we simply update the balance for the last fetched address.
- if (!_.isUndefined(this._prevUserAddressIfExists)) {
- await this._updateUserWeiBalanceAsync(this._prevUserAddressIfExists);
- }
- }
- }
- private async _updateUserWeiBalanceAsync(userAddress: string): Promise<void> {
- const balanceInWei = await this._web3Wrapper.getBalanceInWeiAsync(userAddress);
- if (_.isUndefined(this._prevUserEtherBalanceInWei) || !balanceInWei.eq(this._prevUserEtherBalanceInWei)) {
- this._prevUserEtherBalanceInWei = balanceInWei;
- this._dispatcher.updateUserWeiBalance(balanceInWei);
- }
- }
- private _stopEmittingUserBalanceState(): void {
- if (!_.isUndefined(this._watchBalanceIntervalId)) {
- intervalUtils.clearAsyncExcludingInterval(this._watchBalanceIntervalId);
- }
- }
-}