diff options
Diffstat (limited to 'packages/contract-wrappers')
4 files changed, 318 insertions, 0 deletions
diff --git a/packages/contract-wrappers/src/contract_wrappers.ts b/packages/contract-wrappers/src/contract_wrappers.ts index 0c535bd5c..396505866 100644 --- a/packages/contract-wrappers/src/contract_wrappers.ts +++ b/packages/contract-wrappers/src/contract_wrappers.ts @@ -20,6 +20,7 @@ import { EtherTokenWrapper } from './contract_wrappers/ether_token_wrapper'; import { ExchangeWrapper } from './contract_wrappers/exchange_wrapper'; import { ForwarderWrapper } from './contract_wrappers/forwarder_wrapper'; import { OrderValidatorWrapper } from './contract_wrappers/order_validator_wrapper'; +import { DutchAuctionWrapper } from './contract_wrappers/dutch_auction_wrapper'; import { ContractWrappersConfigSchema } from './schemas/contract_wrappers_config_schema'; import { ContractWrappersConfig } from './types'; import { assert } from './utils/assert'; @@ -65,6 +66,10 @@ export class ContractWrappers { * An instance of the OrderValidatorWrapper class containing methods for interacting with any OrderValidator smart contract. */ public orderValidator: OrderValidatorWrapper; + /** + * An instance of the DutchAuctionWrapper class containing methods for interacting with any DutchAuction smart contract. + */ + public dutchAuction: DutchAuctionWrapper; private readonly _web3Wrapper: Web3Wrapper; /** @@ -141,6 +146,11 @@ export class ContractWrappers { config.networkId, contractAddresses.orderValidator, ); + this.dutchAuction = new DutchAuctionWrapper( + this._web3Wrapper, + config.networkId, + contractAddresses.orderValidator, + ); } /** * Unsubscribes from all subscriptions for all contracts. diff --git a/packages/contract-wrappers/src/contract_wrappers/dutch_auction_wrapper.ts b/packages/contract-wrappers/src/contract_wrappers/dutch_auction_wrapper.ts new file mode 100644 index 000000000..500e7a63d --- /dev/null +++ b/packages/contract-wrappers/src/contract_wrappers/dutch_auction_wrapper.ts @@ -0,0 +1,151 @@ +import { artifacts as protocolArtifacts } from '@0x/contracts-protocol'; +import { DutchAuctionContract } from '@0x/abi-gen-wrappers'; +import { DutchAuction } from '@0x/contract-artifacts'; +import { LogDecoder } from '@0x/contracts-test-utils'; +import { artifacts as tokensArtifacts } from '@0x/contracts-tokens'; +import { _getDefaultContractAddresses } from '../utils/contract_addresses'; +import { DutchAuctionDetails, SignedOrder } from '@0x/types'; +import { ContractAbi } from 'ethereum-types'; +import { Web3Wrapper } from '@0x/web3-wrapper'; +import { BigNumber } from '@0x/utils'; +import { Provider, TransactionReceiptWithDecodedLogs } from 'ethereum-types'; +import * as _ from 'lodash'; +import ethAbi = require('ethereumjs-abi'); +import { schemas } from '@0x/json-schemas'; +import { assert } from '../utils/assert'; +import ethUtil = require('ethereumjs-util'); + +import { orderTxOptsSchema } from '../schemas/order_tx_opts_schema'; +import { txOptsSchema } from '../schemas/tx_opts_schema'; +import { OrderTransactionOpts } from '../types'; +import { ContractWrapper } from './contract_wrapper'; +import { ExchangeWrapperError } from '../types'; + +export class DutchAuctionWrapper extends ContractWrapper { + public abi: ContractAbi = DutchAuction.compilerOutput.abi; + public address: string; + private _dutchAuctionContractIfExists?: DutchAuctionContract; + /** + * Instantiate DutchAuctionWrapper + * @param web3Wrapper Web3Wrapper instance to use. + * @param networkId Desired networkId. + * @param address The address of the Dutch Auction contract. If undefined, will + * default to the known address corresponding to the networkId. + */ + constructor( + web3Wrapper: Web3Wrapper, + networkId: number, + address: string, + ) { + super(web3Wrapper, networkId); + this.address = address; + } + /** + * Matches the buy and sell orders at an amount given the following: the current block time, the auction + * start time and the auction begin amount. The sell order is a an order at the lowest amount + * at the end of the auction. Excess from the match is transferred to the seller. + * Over time the price moves from beginAmount to endAmount given the current block.timestamp. + * @param buyOrder The Buyer's order. This order is for the current expected price of the auction. + * @param sellOrder The Seller's order. This order is for the lowest amount (at the end of the auction). + * @param from Address the transaction is being sent from. + * @return Transaction receipt with decoded logs. + */ + public async matchOrdersAsync( + buyOrder: SignedOrder, + sellOrder: SignedOrder, + takerAddress: string, + orderTransactionOpts: OrderTransactionOpts = { shouldValidate: true }, + ): Promise<string> { + // type assertions + assert.doesConformToSchema('buyOrder', buyOrder, schemas.signedOrderSchema); + assert.doesConformToSchema('sellOrder', sellOrder, schemas.signedOrderSchema); + await assert.isSenderAddressAsync('takerAddress', takerAddress, this._web3Wrapper); + assert.doesConformToSchema('orderTransactionOpts', orderTransactionOpts, orderTxOptsSchema, [txOptsSchema]); + const normalizedTakerAddress = takerAddress.toLowerCase(); + // other assertions + if ( + sellOrder.makerAssetData !== buyOrder.takerAssetData || + sellOrder.takerAssetData !== buyOrder.makerAssetData + ) { + throw new Error(ExchangeWrapperError.AssetDataMismatch); + } + // get contract + const dutchAuctionInstance = await this._getDutchAuctionContractAsync(); + // validate transaction + if (orderTransactionOpts.shouldValidate) { + await dutchAuctionInstance.matchOrders.callAsync( + buyOrder, + sellOrder, + buyOrder.signature, + sellOrder.signature, + { + from: normalizedTakerAddress, + gas: orderTransactionOpts.gasLimit, + gasPrice: orderTransactionOpts.gasPrice, + nonce: orderTransactionOpts.nonce, + }, + ); + } + // send transaction + const txHash = await dutchAuctionInstance.matchOrders.sendTransactionAsync( + buyOrder, + sellOrder, + buyOrder.signature, + sellOrder.signature, + { + from: normalizedTakerAddress, + gas: orderTransactionOpts.gasLimit, + gasPrice: orderTransactionOpts.gasPrice, + nonce: orderTransactionOpts.nonce, + }, + ); + return txHash; + } + /** + * Calculates the Auction Details for the given order + * @param sellOrder The Seller's order. This order is for the lowest amount (at the end of the auction). + * @return The dutch auction details. + */ + public async getAuctionDetailsAsync(sellOrder: SignedOrder): Promise<DutchAuctionDetails> { + // type assertions + assert.doesConformToSchema('sellOrder', sellOrder, schemas.signedOrderSchema); + // get contract + const dutchAuctionInstance = await this._getDutchAuctionContractAsync(); + // call contract + const afterAuctionDetails = await dutchAuctionInstance.getAuctionDetails.callAsync(sellOrder); + return afterAuctionDetails; + } + private async _getDutchAuctionContractAsync(): Promise<DutchAuctionContract> { + if (!_.isUndefined(this._dutchAuctionContractIfExists)) { + return this._dutchAuctionContractIfExists; + } + const contractInstance = new DutchAuctionContract( + this.abi, + this.address, + this._web3Wrapper.getProvider(), + this._web3Wrapper.getContractDefaults(), + ); + this._dutchAuctionContractIfExists = contractInstance; + return this._dutchAuctionContractIfExists; + } + /** + * Dutch auction details are encoded with the asset data for a 0x order. This function produces a hex + * encoded assetData string, containing information both about the asset being traded and the + * dutch auction; which is usable in the makerAssetData or takerAssetData fields in a 0x order. + * @param assetData Hex encoded assetData string for the asset being auctioned. + * @param beginTimeSeconds Begin time of the dutch auction. + * @param beginAmount Starting amount being sold in the dutch auction. + * @return The hex encoded assetData string. + */ + public static encodeDutchAuctionAssetData(assetData: string, beginTimeSeconds: BigNumber, beginAmount: BigNumber): string { + const assetDataBuffer = ethUtil.toBuffer(assetData); + const abiEncodedAuctionData = (ethAbi as any).rawEncode( + ['uint256', 'uint256'], + [beginTimeSeconds.toString(), beginAmount.toString()], + ); + const abiEncodedAuctionDataBuffer = ethUtil.toBuffer(abiEncodedAuctionData); + const dutchAuctionDataBuffer = Buffer.concat([assetDataBuffer, abiEncodedAuctionDataBuffer]); + const dutchAuctionData = ethUtil.bufferToHex(dutchAuctionDataBuffer); + return dutchAuctionData; + }; +} diff --git a/packages/contract-wrappers/src/index.ts b/packages/contract-wrappers/src/index.ts index d66ff5c9c..5c64dbbc6 100644 --- a/packages/contract-wrappers/src/index.ts +++ b/packages/contract-wrappers/src/index.ts @@ -34,6 +34,7 @@ export { ERC20ProxyWrapper } from './contract_wrappers/erc20_proxy_wrapper'; export { ERC721ProxyWrapper } from './contract_wrappers/erc721_proxy_wrapper'; export { ForwarderWrapper } from './contract_wrappers/forwarder_wrapper'; export { OrderValidatorWrapper } from './contract_wrappers/order_validator_wrapper'; +export { DutchAuctionWrapper } from './contract_wrappers/dutch_auction_wrapper'; export { TransactionEncoder } from './utils/transaction_encoder'; diff --git a/packages/contract-wrappers/test/dutch_auction_wrapper_test.ts b/packages/contract-wrappers/test/dutch_auction_wrapper_test.ts new file mode 100644 index 000000000..ad8b3bd31 --- /dev/null +++ b/packages/contract-wrappers/test/dutch_auction_wrapper_test.ts @@ -0,0 +1,156 @@ +import { BlockchainLifecycle } from '@0x/dev-utils'; +import { FillScenarios } from '@0x/fill-scenarios'; +import { assetDataUtils } from '@0x/order-utils'; +import { SignedOrder } from '@0x/types'; +import { BigNumber } from '@0x/utils'; +import * as chai from 'chai'; +import 'mocha'; + +import { ContractWrappers, OrderStatus } from '../src'; + +import { chaiSetup } from './utils/chai_setup'; +import { constants } from './utils/constants'; +import { migrateOnceAsync } from './utils/migrate'; +import { tokenUtils } from './utils/token_utils'; +import { provider, web3Wrapper } from './utils/web3_wrapper'; +import { getLatestBlockTimestampAsync } from '@0x/contracts-test-utils'; +import { DutchAuction } from '@0x/contract-artifacts'; +import { DutchAuctionWrapper } from '../src/contract_wrappers/dutch_auction_wrapper'; + +chaiSetup.configure(); +const expect = chai.expect; +const blockchainLifecycle = new BlockchainLifecycle(web3Wrapper); + +// tslint:disable:custom-no-magic-numbers +describe.only('DutchAuctionWrapper', () => { + const fillableAmount = new BigNumber(5); + const tenMinutesInSeconds = 10 * 60; + let contractWrappers: ContractWrappers; + let fillScenarios: FillScenarios; + let exchangeContractAddress: string; + let zrxTokenAddress: string; + let userAddresses: string[]; + let makerAddress: string; + let takerAddress: string; + let makerTokenAddress: string; + let takerTokenAddress: string; + let makerAssetData: string; + let takerAssetData: string; + let buyOrder: SignedOrder; + let sellOrder: SignedOrder; + let makerTokenAssetData: string; + let takerTokenAssetData: string; + before(async () => { + console.log(`BEOGIN DEPLOYINH`); + const contractAddresses = await migrateOnceAsync(); + await blockchainLifecycle.startAsync(); + const config = { + networkId: constants.TESTRPC_NETWORK_ID, + contractAddresses, + blockPollingIntervalMs: 10, + }; + + contractWrappers = new ContractWrappers(provider, config); + console.log(`DEPLOYINH`); + exchangeContractAddress = contractWrappers.exchange.address; + userAddresses = await web3Wrapper.getAvailableAddressesAsync(); + zrxTokenAddress = contractWrappers.exchange.zrxTokenAddress; + fillScenarios = new FillScenarios( + provider, + userAddresses, + zrxTokenAddress, + exchangeContractAddress, + contractWrappers.erc20Proxy.address, + contractWrappers.erc721Proxy.address, + ); + [, makerAddress, takerAddress] = userAddresses; + [makerTokenAddress] = tokenUtils.getDummyERC20TokenAddresses(); + takerTokenAddress = contractWrappers.forwarder.etherTokenAddress; + // construct asset data for tokens being swapped + [makerTokenAssetData, takerTokenAssetData] = [ + assetDataUtils.encodeERC20AssetData(makerTokenAddress), + assetDataUtils.encodeERC20AssetData(takerTokenAddress), + ]; + // encode auction details in maker asset data + const auctionBeginAmount = fillableAmount; + const currentBlockTimestamp = await getLatestBlockTimestampAsync(); + const auctionBeginTimeSeconds = new BigNumber(currentBlockTimestamp - tenMinutesInSeconds); + makerAssetData = DutchAuctionWrapper.encodeDutchAuctionAssetData( + makerTokenAssetData, + auctionBeginTimeSeconds, + auctionBeginAmount + ); + takerAssetData = takerTokenAssetData; + // create sell / buy orders for auction + // note that the maker/taker asset datas are swapped in the `buyOrder` + sellOrder = await fillScenarios.createFillableSignedOrderAsync( + makerAssetData, + takerAssetData, + makerAddress, + constants.NULL_ADDRESS, + fillableAmount, + ); + buyOrder = await fillScenarios.createFillableSignedOrderAsync( + takerAssetData, + makerAssetData, + makerAddress, + constants.NULL_ADDRESS, + fillableAmount, + ); + }); + after(async () => { + await blockchainLifecycle.revertAsync(); + }); + beforeEach(async () => { + await blockchainLifecycle.startAsync(); + }); + afterEach(async () => { + await blockchainLifecycle.revertAsync(); + }); + describe('#matchOrdersAsync', () => { + it('should match two orders', async () => { + const txHash = await contractWrappers.dutchAuction.matchOrdersAsync(buyOrder, sellOrder, takerAddress); + await web3Wrapper.awaitTransactionSuccessAsync(txHash, constants.AWAIT_TRANSACTION_MINED_MS); + }); + it('should throw when invalid transaction and shouldValidate is true', async () => { + // request match with bad buy/sell orders + const badSellOrder = buyOrder; + const badBuyOrder = sellOrder; + return expect( + await contractWrappers.dutchAuction.matchOrdersAsync( + badBuyOrder, + badSellOrder, + takerAddress, + { + shouldValidate: true, + }, + ), + ).to.be.rejectedWith('COMPLETE_FILL_FAILED'); + }); + }); + + describe('#getAuctionDetailsAsync', () => { + it('should be worth the begin price at the begining of the auction', async () => { + // setup auction details + const auctionBeginAmount = fillableAmount; + const currentBlockTimestamp = await getLatestBlockTimestampAsync(); + const auctionBeginTimeSeconds = new BigNumber(currentBlockTimestamp + tenMinutesInSeconds); + const makerAssetData = DutchAuctionWrapper.encodeDutchAuctionAssetData( + makerTokenAssetData, + auctionBeginTimeSeconds, + auctionBeginAmount + ); + const order = await fillScenarios.createFillableSignedOrderAsync( + makerAssetData, + takerAssetData, + makerAddress, + constants.NULL_ADDRESS, + fillableAmount, + ); + const auctionDetails = await contractWrappers.dutchAuction.getAuctionDetailsAsync(order); + expect(auctionDetails.currentTimeSeconds).to.be.bignumber.lte(auctionBeginTimeSeconds); + expect(auctionDetails.currentAmount).to.be.bignumber.equal(auctionBeginAmount); + expect(auctionDetails.beginAmount).to.be.bignumber.equal(auctionBeginAmount); + }); + }); +}); |