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-rw-r--r--src/contract_wrappers/contract_wrapper.ts52
-rw-r--r--src/contract_wrappers/exchange_wrapper.ts11
-rw-r--r--src/contract_wrappers/token_wrapper.ts11
-rw-r--r--src/types.ts4
4 files changed, 38 insertions, 40 deletions
diff --git a/src/contract_wrappers/contract_wrapper.ts b/src/contract_wrappers/contract_wrapper.ts
index 19dccc6f2..7997b1647 100644
--- a/src/contract_wrappers/contract_wrapper.ts
+++ b/src/contract_wrappers/contract_wrapper.ts
@@ -38,6 +38,29 @@ export class ContractWrapper {
this._onLogAddedSubscriptionToken = undefined;
this._onLogRemovedSubscriptionToken = undefined;
}
+ /**
+ * Cancels all existing subscriptions
+ */
+ public unsubscribeAll(): void {
+ const filterTokens = _.keys(this._filterCallbacks);
+ _.each(filterTokens, filterToken => {
+ this._unsubscribe(filterToken);
+ });
+ }
+ protected _unsubscribe(filterToken: string, err?: Error): void {
+ if (_.isUndefined(this._filters[filterToken])) {
+ throw new Error(ZeroExError.SubscriptionNotFound);
+ }
+ if (!_.isUndefined(err)) {
+ const callback = this._filterCallbacks[filterToken];
+ callback(err, undefined);
+ }
+ delete this._filters[filterToken];
+ delete this._filterCallbacks[filterToken];
+ if (_.isEmpty(this._filters)) {
+ this._stopBlockAndLogStream();
+ }
+ }
protected _subscribe<ArgsType extends ContractEventArgs>(
address: string, eventName: ContractEvents, indexFilterValues: IndexedFilterValues, abi: Web3.ContractAbi,
callback: EventCallback<ArgsType>): string {
@@ -50,16 +73,6 @@ export class ContractWrapper {
this._filterCallbacks[filterToken] = callback;
return filterToken;
}
- protected _unsubscribe(filterToken: string): void {
- if (_.isUndefined(this._filters[filterToken])) {
- throw new Error(ZeroExError.SubscriptionNotFound);
- }
- delete this._filters[filterToken];
- delete this._filterCallbacks[filterToken];
- if (_.isEmpty(this._filters)) {
- this._stopBlockAndLogStream();
- }
- }
protected async _getLogsAsync<ArgsType extends ContractEventArgs>(
address: string, eventName: ContractEvents, subscriptionOpts: SubscriptionOpts,
indexFilterValues: IndexedFilterValues, abi: Web3.ContractAbi): Promise<Array<LogWithDecodedArgs<ArgsType>>> {
@@ -90,7 +103,7 @@ export class ContractWrapper {
...decodedLog,
removed,
};
- this._filterCallbacks[filterToken](logEvent);
+ this._filterCallbacks[filterToken](null, logEvent);
}
});
}
@@ -122,11 +135,18 @@ export class ContractWrapper {
delete this._blockAndLogStreamer;
}
private async _reconcileBlockAsync(): Promise<void> {
- const latestBlock = await this._web3Wrapper.getBlockAsync(BlockParamLiteral.Latest);
- // We need to coerce to Block type cause Web3.Block includes types for mempool blocks
- if (!_.isUndefined(this._blockAndLogStreamer)) {
- // If we clear the interval while fetching the block - this._blockAndLogStreamer will be undefined
- this._blockAndLogStreamer.reconcileNewBlock(latestBlock as any as Block);
+ try {
+ const latestBlock = await this._web3Wrapper.getBlockAsync(BlockParamLiteral.Latest);
+ // We need to coerce to Block type cause Web3.Block includes types for mempool blocks
+ if (!_.isUndefined(this._blockAndLogStreamer)) {
+ // If we clear the interval while fetching the block - this._blockAndLogStreamer will be undefined
+ this._blockAndLogStreamer.reconcileNewBlock(latestBlock as any as Block);
+ }
+ } catch (err) {
+ const filterTokens = _.keys(this._filterCallbacks);
+ _.each(filterTokens, filterToken => {
+ this._unsubscribe(filterToken, err);
+ });
}
}
}
diff --git a/src/contract_wrappers/exchange_wrapper.ts b/src/contract_wrappers/exchange_wrapper.ts
index f68e80b5d..fe0c5bc00 100644
--- a/src/contract_wrappers/exchange_wrapper.ts
+++ b/src/contract_wrappers/exchange_wrapper.ts
@@ -48,7 +48,6 @@ const SHOULD_VALIDATE_BY_DEFAULT = true;
*/
export class ExchangeWrapper extends ContractWrapper {
private _exchangeContractIfExists?: ExchangeContract;
- private _activeSubscriptions: string[];
private _orderValidationUtils: OrderValidationUtils;
private _tokenWrapper: TokenWrapper;
private _exchangeContractErrCodesToMsg = {
@@ -83,7 +82,6 @@ export class ExchangeWrapper extends ContractWrapper {
super(web3Wrapper, abiDecoder);
this._tokenWrapper = tokenWrapper;
this._orderValidationUtils = new OrderValidationUtils(tokenWrapper, this);
- this._activeSubscriptions = [];
this._contractAddressIfExists = contractAddressIfExists;
}
/**
@@ -665,7 +663,6 @@ export class ExchangeWrapper extends ContractWrapper {
const subscriptionToken = this._subscribe<ArgsType>(
exchangeContractAddress, eventName, indexFilterValues, artifacts.ExchangeArtifact.abi, callback,
);
- this._activeSubscriptions.push(subscriptionToken);
return subscriptionToken;
}
/**
@@ -673,7 +670,6 @@ export class ExchangeWrapper extends ContractWrapper {
* @param subscriptionToken Subscription token returned by `subscribe()`
*/
public unsubscribe(subscriptionToken: string): void {
- _.pull(this._activeSubscriptions, subscriptionToken);
this._unsubscribe(subscriptionToken);
}
/**
@@ -824,13 +820,6 @@ export class ExchangeWrapper extends ContractWrapper {
const ZRXtokenAddress = await exchangeInstance.ZRX_TOKEN_CONTRACT.callAsync();
return ZRXtokenAddress;
}
- /**
- * Cancels all existing subscriptions
- */
- public unsubscribeAll(): void {
- _.forEach(this._activeSubscriptions, this._unsubscribe.bind(this));
- this._activeSubscriptions = [];
- }
private async _invalidateContractInstancesAsync(): Promise<void> {
this.unsubscribeAll();
delete this._exchangeContractIfExists;
diff --git a/src/contract_wrappers/token_wrapper.ts b/src/contract_wrappers/token_wrapper.ts
index dd87ebc9f..614ac19d4 100644
--- a/src/contract_wrappers/token_wrapper.ts
+++ b/src/contract_wrappers/token_wrapper.ts
@@ -29,13 +29,11 @@ const ALLOWANCE_TO_ZERO_GAS_AMOUNT = 47275;
export class TokenWrapper extends ContractWrapper {
public UNLIMITED_ALLOWANCE_IN_BASE_UNITS = constants.UNLIMITED_ALLOWANCE_IN_BASE_UNITS;
private _tokenContractsByAddress: {[address: string]: TokenContract};
- private _activeSubscriptions: string[];
private _tokenTransferProxyContractAddressFetcher: () => Promise<string>;
constructor(web3Wrapper: Web3Wrapper, abiDecoder: AbiDecoder,
tokenTransferProxyContractAddressFetcher: () => Promise<string>) {
super(web3Wrapper, abiDecoder);
this._tokenContractsByAddress = {};
- this._activeSubscriptions = [];
this._tokenTransferProxyContractAddressFetcher = tokenTransferProxyContractAddressFetcher;
}
/**
@@ -262,7 +260,6 @@ export class TokenWrapper extends ContractWrapper {
const subscriptionToken = this._subscribe<ArgsType>(
tokenAddress, eventName, indexFilterValues, artifacts.TokenArtifact.abi, callback,
);
- this._activeSubscriptions.push(subscriptionToken);
return subscriptionToken;
}
/**
@@ -270,7 +267,6 @@ export class TokenWrapper extends ContractWrapper {
* @param subscriptionToken Subscription token returned by `subscribe()`
*/
public unsubscribe(subscriptionToken: string): void {
- _.pull(this._activeSubscriptions, subscriptionToken);
this._unsubscribe(subscriptionToken);
}
/**
@@ -294,13 +290,6 @@ export class TokenWrapper extends ContractWrapper {
);
return logs;
}
- /**
- * Cancels all existing subscriptions
- */
- public unsubscribeAll(): void {
- _.forEach(this._activeSubscriptions, this._unsubscribe.bind(this));
- this._activeSubscriptions = [];
- }
private _invalidateContractInstancesAsync(): void {
this.unsubscribeAll();
this._tokenContractsByAddress = {};
diff --git a/src/types.ts b/src/types.ts
index a366fc31e..09b611019 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -42,8 +42,8 @@ export type OrderValues = [BigNumber, BigNumber, BigNumber,
export type LogEvent = Web3.LogEntryEvent;
export type DecodedLogEvent<ArgsType> = Web3.DecodedLogEntryEvent<ArgsType>;
-export type EventCallbackAsync<ArgsType> = (log: DecodedLogEvent<ArgsType>) => Promise<void>;
-export type EventCallbackSync<ArgsType> = (log: DecodedLogEvent<ArgsType>) => void;
+export type EventCallbackAsync<ArgsType> = (err: null|Error, log?: DecodedLogEvent<ArgsType>) => Promise<void>;
+export type EventCallbackSync<ArgsType> = (err: null|Error, log?: DecodedLogEvent<ArgsType>) => void;
export type EventCallback<ArgsType> = EventCallbackSync<ArgsType>|EventCallbackAsync<ArgsType>;
export type EventWatcherCallbackSync = (log: LogEvent) => void;