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authorLeonid <logvinov.leon@gmail.com>2017-06-08 17:17:04 +0800
committerGitHub <noreply@github.com>2017-06-08 17:17:04 +0800
commitc6645f9f4f470323086d9004cf603a68091d71a3 (patch)
tree5f9de5948df1b471c93d3445a3deda7ac75d935a /src/contract_wrappers/exchange_wrapper.ts
parent834b28bfbe26e0331820d978b5be659b27423528 (diff)
parent32ba65ee265d6acc3fe8ff87a5a36df36cd9a3d5 (diff)
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Merge pull request #43 from 0xProject/batchCancelAsync
Batch cancel order async
Diffstat (limited to 'src/contract_wrappers/exchange_wrapper.ts')
-rw-r--r--src/contract_wrappers/exchange_wrapper.ts58
1 files changed, 56 insertions, 2 deletions
diff --git a/src/contract_wrappers/exchange_wrapper.ts b/src/contract_wrappers/exchange_wrapper.ts
index 4f132656e..d144d8aad 100644
--- a/src/contract_wrappers/exchange_wrapper.ts
+++ b/src/contract_wrappers/exchange_wrapper.ts
@@ -19,6 +19,7 @@ import {
ContractEventObj,
EventCallback,
ContractResponse,
+ OrderCancellationRequest,
} from '../types';
import {assert} from '../utils/assert';
import {utils} from '../utils/utils';
@@ -226,8 +227,8 @@ export class ExchangeWrapper extends ContractWrapper {
/**
* Cancel a given fill amount of an order. Cancellations are cumulative.
*/
- public async cancelOrderAsync(order: Order|SignedOrder, takerTokenCancelAmount: BigNumber.BigNumber):
- Promise<void> {
+ public async cancelOrderAsync(
+ order: Order|SignedOrder, takerTokenCancelAmount: BigNumber.BigNumber): Promise<void> {
assert.doesConformToSchema('order',
SchemaValidator.convertToJSONSchemaCompatibleObject(order as object),
orderSchema);
@@ -258,6 +259,59 @@ export class ExchangeWrapper extends ContractWrapper {
this.throwErrorLogsAsErrors(response.logs);
}
/**
+ * Batch version of cancelOrderAsync. Atomically cancels multiple orders in a single transaction.
+ * All orders must be from the same maker.
+ */
+ public async batchCancelOrderAsync(orderCancellationRequests: OrderCancellationRequest[]): Promise<void> {
+ if (_.isEmpty(orderCancellationRequests)) {
+ return; // no-op
+ }
+ const makers = _.map(orderCancellationRequests, cancellationRequest => cancellationRequest.order.maker);
+ assert.assert(_.uniq(makers).length === 1, ExchangeContractErrs.MULTIPLE_MAKERS_IN_SINGLE_CANCEL_BATCH);
+ const maker = makers[0];
+ await assert.isSenderAddressAvailableAsync(this.web3Wrapper, 'maker', maker);
+ _.forEach(orderCancellationRequests,
+ async (cancellationRequest: OrderCancellationRequest, i: number) => {
+ assert.doesConformToSchema(`orderCancellationRequests[${i}].order`,
+ SchemaValidator.convertToJSONSchemaCompatibleObject(cancellationRequest.order as object), orderSchema,
+ );
+ assert.isBigNumber(`orderCancellationRequests[${i}].takerTokenCancelAmount`,
+ cancellationRequest.takerTokenCancelAmount,
+ );
+ await this.validateCancelOrderAndThrowIfInvalidAsync(
+ cancellationRequest.order, cancellationRequest.takerTokenCancelAmount,
+ );
+ });
+ const exchangeInstance = await this.getExchangeContractAsync();
+ const orderAddressesValuesAndTakerTokenCancelAmounts = _.map(orderCancellationRequests, cancellationRequest => {
+ return [
+ ...ExchangeWrapper.getOrderAddressesAndValues(cancellationRequest.order),
+ cancellationRequest.takerTokenCancelAmount,
+ ];
+ });
+ // We use _.unzip<any> because _.unzip doesn't type check if values have different types :'(
+ const [orderAddresses, orderValues, takerTokenCancelAmounts] =
+ _.unzip<any>(orderAddressesValuesAndTakerTokenCancelAmounts);
+ const gas = await exchangeInstance.batchCancel.estimateGas(
+ orderAddresses,
+ orderValues,
+ takerTokenCancelAmounts,
+ {
+ from: maker,
+ },
+ );
+ const response: ContractResponse = await exchangeInstance.batchCancel(
+ orderAddresses,
+ orderValues,
+ takerTokenCancelAmounts,
+ {
+ from: maker,
+ gas,
+ },
+ );
+ this.throwErrorLogsAsErrors(response.logs);
+ }
+ /**
* Subscribe to an event type emitted by the Exchange smart contract
*/
public async subscribeAsync(eventName: ExchangeEvents, subscriptionOpts: SubscriptionOpts,