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-rw-r--r--src/0x.ts7
-rw-r--r--src/utils/interval_utils.ts20
2 files changed, 25 insertions, 2 deletions
diff --git a/src/0x.ts b/src/0x.ts
index bde9360c3..8709dadc9 100644
--- a/src/0x.ts
+++ b/src/0x.ts
@@ -13,6 +13,7 @@ import {utils} from './utils/utils';
import {signatureUtils} from './utils/signature_utils';
import {assert} from './utils/assert';
import {AbiDecoder} from './utils/abi_decoder';
+import {IntervalUtils} from './utils/interval_utils';
import {artifacts} from './artifacts';
import {ExchangeWrapper} from './contract_wrappers/exchange_wrapper';
import {TokenRegistryWrapper} from './contract_wrappers/token_registry_wrapper';
@@ -72,6 +73,7 @@ export class ZeroEx {
public proxy: TokenTransferProxyWrapper;
private _web3Wrapper: Web3Wrapper;
private _abiDecoder: AbiDecoder;
+ private _intervalUtils: IntervalUtils;
/**
* Verifies that the elliptic curve signature `signature` was generated
* by signing `data` with the private key corresponding to the `signerAddress` address.
@@ -192,6 +194,7 @@ export class ZeroEx {
const defaults = {
gasPrice,
};
+ this._intervalUtils = new IntervalUtils();
this._web3Wrapper = new Web3Wrapper(provider, defaults);
this.token = new TokenWrapper(this._web3Wrapper);
this.proxy = new TokenTransferProxyWrapper(this._web3Wrapper);
@@ -280,10 +283,10 @@ export class ZeroEx {
txHash: string, pollingIntervalMs: number = 1000): Promise<TransactionReceiptWithDecodedLogs> {
const txReceiptPromise = new Promise(
(resolve: (receipt: TransactionReceiptWithDecodedLogs) => void, reject) => {
- const intervalId = setInterval(async () => {
+ const intervalId = this._intervalUtils.setAsyncExcludingInterval(async () => {
const transactionReceipt = await this._web3Wrapper.getTransactionReceiptAsync(txHash);
if (!_.isNull(transactionReceipt)) {
- clearInterval(intervalId);
+ this._intervalUtils.clearAsyncExcludingInterval(intervalId);
const logsWithDecodedArgs = _.map(transactionReceipt.logs, (log: Web3.LogEntry) => {
const decodedLog = this._abiDecoder.decodeLog(log);
if (_.isUndefined(decodedLog)) {
diff --git a/src/utils/interval_utils.ts b/src/utils/interval_utils.ts
new file mode 100644
index 000000000..23e6acc5b
--- /dev/null
+++ b/src/utils/interval_utils.ts
@@ -0,0 +1,20 @@
+import * as _ from 'lodash';
+
+export class IntervalUtils {
+ private mutex: {[intervalId: number]: boolean} = {};
+ public setAsyncExcludingInterval(fn: () => Promise<void>, intervalMs: number) {
+ const intervalId = setInterval(async () => {
+ if (_.isUndefined(this.mutex[intervalId])) {
+ return;
+ } else {
+ this.mutex[intervalId] = true;
+ await fn();
+ delete this.mutex[intervalId];
+ }
+ });
+ return intervalId;
+ }
+ public clearAsyncExcludingInterval(intervalId: number): void {
+ clearInterval(intervalId);
+ }
+}