diff options
Diffstat (limited to 'src/contract_wrappers')
| -rw-r--r-- | src/contract_wrappers/exchange_wrapper.ts | 86 |
1 files changed, 76 insertions, 10 deletions
diff --git a/src/contract_wrappers/exchange_wrapper.ts b/src/contract_wrappers/exchange_wrapper.ts index 9cb2332fe..72ae0d07e 100644 --- a/src/contract_wrappers/exchange_wrapper.ts +++ b/src/contract_wrappers/exchange_wrapper.ts @@ -20,6 +20,7 @@ import { EventCallback, ContractResponse, OrderCancellationRequest, + OrderFillRequest, } from '../types'; import {assert} from '../utils/assert'; import {utils} from '../utils/utils'; @@ -70,8 +71,8 @@ export class ExchangeWrapper extends ContractWrapper { await this.stopWatchingExchangeLogEventsAsync(); delete this.exchangeContractIfExists; } - public async isValidSignatureAsync(dataHex: string, ecSignature: ECSignature, - signerAddressHex: string): Promise<boolean> { + private async isValidSignatureUsingContractCallAsync(dataHex: string, ecSignature: ECSignature, + signerAddressHex: string): Promise<boolean> { assert.isHexString('dataHex', dataHex); assert.doesConformToSchema('ecSignature', ecSignature, ecSignatureSchema); assert.isETHAddressHex('signerAddressHex', signerAddressHex); @@ -126,31 +127,31 @@ export class ExchangeWrapper extends ContractWrapper { return cancelledAmountInBaseUnits; } /** - * Fills a signed order with a fillAmount denominated in baseUnits of the taker token. + * Fills a signed order with an amount denominated in baseUnits of the taker token. * Since the order in which transactions are included in the next block is indeterminate, race-conditions * could arise where a users balance or allowance changes before the fillOrder executes. Because of this, * we allow you to specify `shouldCheckTransfer`. If true, the smart contract will not throw if while * executing, the parties do not have sufficient balances/allowances, preserving gas costs. Setting it to * false forgoes this check and causes the smart contract to throw instead. */ - public async fillOrderAsync(signedOrder: SignedOrder, fillTakerAmount: BigNumber.BigNumber, + public async fillOrderAsync(signedOrder: SignedOrder, takerTokenFillAmount: BigNumber.BigNumber, shouldCheckTransfer: boolean, takerAddress: string): Promise<void> { assert.doesConformToSchema('signedOrder', SchemaValidator.convertToJSONSchemaCompatibleObject(signedOrder as object), signedOrderSchema); - assert.isBigNumber('fillTakerAmount', fillTakerAmount); + assert.isBigNumber('takerTokenFillAmount', takerTokenFillAmount); assert.isBoolean('shouldCheckTransfer', shouldCheckTransfer); await assert.isSenderAddressAsync('takerAddress', takerAddress, this.web3Wrapper); const exchangeInstance = await this.getExchangeContractAsync(); - await this.validateFillOrderAndThrowIfInvalidAsync(signedOrder, fillTakerAmount, takerAddress); + await this.validateFillOrderAndThrowIfInvalidAsync(signedOrder, takerTokenFillAmount, takerAddress); const [orderAddresses, orderValues] = ExchangeWrapper.getOrderAddressesAndValues(signedOrder); const gas = await exchangeInstance.fill.estimateGas( orderAddresses, orderValues, - fillTakerAmount, + takerTokenFillAmount, shouldCheckTransfer, signedOrder.ecSignature.v, signedOrder.ecSignature.r, @@ -162,7 +163,7 @@ export class ExchangeWrapper extends ContractWrapper { const response: ContractResponse = await exchangeInstance.fill( orderAddresses, orderValues, - fillTakerAmount, + takerTokenFillAmount, shouldCheckTransfer, signedOrder.ecSignature.v, signedOrder.ecSignature.r, @@ -175,6 +176,71 @@ export class ExchangeWrapper extends ContractWrapper { this.throwErrorLogsAsErrors(response.logs); } /** + * Batch version of fillOrderAsync. + * Executes multiple fills atomically in a single transaction. + * If shouldCheckTransfer is set to true, it will continue filling subsequent orders even when earlier ones fail. + * When shouldCheckTransfer is set to false, if any fill fails, the entire batch fails. + */ + public async batchFillOrderAsync(orderFillRequests: OrderFillRequest[], + shouldCheckTransfer: boolean, takerAddress: string): Promise<void> { + assert.isBoolean('shouldCheckTransfer', shouldCheckTransfer); + await assert.isSenderAddressAsync('takerAddress', takerAddress, this.web3Wrapper); + _.forEach(orderFillRequests, + async (orderFillRequest: OrderFillRequest, i: number) => { + assert.doesConformToSchema(`orderFillRequests[${i}].signedOrder`, + SchemaValidator.convertToJSONSchemaCompatibleObject(orderFillRequest.signedOrder as object), + signedOrderSchema); + assert.isBigNumber(`orderFillRequests[${i}].takerTokenFillAmount`, orderFillRequest.takerTokenFillAmount); + await this.validateFillOrderAndThrowIfInvalidAsync( + orderFillRequest.signedOrder, orderFillRequest.takerTokenFillAmount, takerAddress); + }); + if (_.isEmpty(orderFillRequests)) { + return; // no-op + } + + const orderAddressesValuesAmountsAndSignatureArray = _.map(orderFillRequests, orderFillRequest => { + return [ + ...ExchangeWrapper.getOrderAddressesAndValues(orderFillRequest.signedOrder), + orderFillRequest.takerTokenFillAmount, + orderFillRequest.signedOrder.ecSignature.v, + orderFillRequest.signedOrder.ecSignature.r, + orderFillRequest.signedOrder.ecSignature.s, + ]; + }); + // We use _.unzip<any> because _.unzip doesn't type check if values have different types :'( + const [orderAddressesArray, orderValuesArray, takerTokenFillAmountArray, vArray, rArray, sArray] = _.unzip<any>( + orderAddressesValuesAmountsAndSignatureArray, + ); + + const exchangeInstance = await this.getExchangeContractAsync(); + const gas = await exchangeInstance.batchFill.estimateGas( + orderAddressesArray, + orderValuesArray, + takerTokenFillAmountArray, + shouldCheckTransfer, + vArray, + rArray, + sArray, + { + from: takerAddress, + }, + ); + const response: ContractResponse = await exchangeInstance.batchFill( + orderAddressesArray, + orderValuesArray, + takerTokenFillAmountArray, + shouldCheckTransfer, + vArray, + rArray, + sArray, + { + from: takerAddress, + gas, + }, + ); + this.throwErrorLogsAsErrors(response.logs); + } + /** * Attempts to fill a specific amount of an order. If the entire amount specified cannot be filled, * the fill order is abandoned. */ @@ -233,7 +299,7 @@ export class ExchangeWrapper extends ContractWrapper { SchemaValidator.convertToJSONSchemaCompatibleObject(order as object), orderSchema); assert.isBigNumber('takerTokenCancelAmount', takerTokenCancelAmount); - await assert.isSenderAddressAvailableAsync(this.web3Wrapper, 'order.maker', order.maker); + await assert.isSenderAddressAsync('order.maker', order.maker, this.web3Wrapper); const exchangeInstance = await this.getExchangeContractAsync(); await this.validateCancelOrderAndThrowIfInvalidAsync(order, takerTokenCancelAmount); @@ -269,7 +335,7 @@ export class ExchangeWrapper extends ContractWrapper { 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); + await assert.isSenderAddressAsync('maker', maker, this.web3Wrapper); _.forEach(orderCancellationRequests, async (cancellationRequest: OrderCancellationRequest, i: number) => { assert.doesConformToSchema(`orderCancellationRequests[${i}].order`, |