diff options
Diffstat (limited to 'packages/testnet-faucets/src/ts/handler.ts')
| -rw-r--r-- | packages/testnet-faucets/src/ts/handler.ts | 106 |
1 files changed, 65 insertions, 41 deletions
diff --git a/packages/testnet-faucets/src/ts/handler.ts b/packages/testnet-faucets/src/ts/handler.ts index 9abfcc4f0..e73eb1744 100644 --- a/packages/testnet-faucets/src/ts/handler.ts +++ b/packages/testnet-faucets/src/ts/handler.ts @@ -1,27 +1,35 @@ -import { Order, ZeroEx } from '0x.js'; -import { BigNumber, logUtils } from '@0xproject/utils'; -import { Web3Wrapper } from '@0xproject/web3-wrapper'; -import { Provider } from 'ethereum-types'; -import * as express from 'express'; -import * as _ from 'lodash'; - import { - NonceTrackerSubprovider, - PrivateKeyWalletSubprovider, + assetDataUtils, + BigNumber, + ContractWrappers, + generatePseudoRandomSalt, + Order, + orderHashUtils, + Provider, RPCSubprovider, + signatureUtils, + SignedOrder, + SignerType, Web3ProviderEngine, -} from '@0xproject/subproviders'; +} from '0x.js'; +import { NonceTrackerSubprovider, PrivateKeyWalletSubprovider } from '@0xproject/subproviders'; +import { logUtils } from '@0xproject/utils'; +import { Web3Wrapper } from '@0xproject/web3-wrapper'; +import * as express from 'express'; +import * as _ from 'lodash'; import { configs } from './configs'; import { constants } from './constants'; import { DispatchQueue } from './dispatch_queue'; import { dispenseAssetTasks } from './dispense_asset_tasks'; import { rpcUrls } from './rpc_urls'; +import { TOKENS_BY_NETWORK } from './tokens'; interface NetworkConfig { dispatchQueue: DispatchQueue; web3Wrapper: Web3Wrapper; - zeroEx: ZeroEx; + contractWrappers: ContractWrappers; + networkId: number; } interface ItemByNetworkId<T> { @@ -35,6 +43,9 @@ enum RequestedAssetType { } const FIVE_DAYS_IN_MS = 4.32e8; // TODO: make this configurable +const NULL_ADDRESS = '0x0000000000000000000000000000000000000000'; +const ZERO = new BigNumber(0); +const ASSET_AMOUNT = new BigNumber(0.1); export class Handler { private readonly _networkConfigByNetworkId: ItemByNetworkId<NetworkConfig> = {}; @@ -50,18 +61,18 @@ export class Handler { return engine; } constructor() { - _.forIn(rpcUrls, (rpcUrl: string, networkId: string) => { + _.forIn(rpcUrls, (rpcUrl: string, networkIdString: string) => { const providerObj = Handler._createProviderEngine(rpcUrl); const web3Wrapper = new Web3Wrapper(providerObj); - const zeroExConfig = { - networkId: +networkId, - }; - const zeroEx = new ZeroEx(providerObj, zeroExConfig); + // tslint:disable-next-line:custom-no-magic-numbers + const networkId = parseInt(networkIdString, 10); + const contractWrappers = new ContractWrappers(providerObj, { networkId }); const dispatchQueue = new DispatchQueue(); this._networkConfigByNetworkId[networkId] = { dispatchQueue, web3Wrapper, - zeroEx, + contractWrappers, + networkId, }; }); } @@ -96,7 +107,11 @@ export class Handler { private _dispenseAsset(req: express.Request, res: express.Response, requestedAssetType: RequestedAssetType): void { const networkId = req.params.networkId; const recipient = req.params.recipient; - const networkConfig = this._networkConfigByNetworkId[networkId]; + const networkConfig = _.get(this._networkConfigByNetworkId, networkId); + if (_.isUndefined(networkConfig)) { + res.status(constants.BAD_REQUEST_STATUS).send('UNSUPPORTED_NETWORK_ID'); + return; + } let dispenserTask; switch (requestedAssetType) { case RequestedAssetType.ETH: @@ -107,7 +122,8 @@ export class Handler { dispenserTask = dispenseAssetTasks.dispenseTokenTask( recipient, requestedAssetType, - networkConfig.zeroEx, + networkConfig.networkId, + networkConfig.contractWrappers.erc20Token, ); break; default: @@ -131,40 +147,48 @@ export class Handler { res.status(constants.BAD_REQUEST_STATUS).send('UNSUPPORTED_NETWORK_ID'); return; } - const zeroEx = networkConfig.zeroEx; res.setHeader('Content-Type', 'application/json'); - const makerToken = await zeroEx.tokenRegistry.getTokenBySymbolIfExistsAsync(requestedAssetType); - if (_.isUndefined(makerToken)) { + const makerTokenIfExists = _.get(TOKENS_BY_NETWORK, [networkConfig.networkId, requestedAssetType]); + if (_.isUndefined(makerTokenIfExists)) { throw new Error(`Unsupported asset type: ${requestedAssetType}`); } const takerTokenSymbol = requestedAssetType === RequestedAssetType.WETH ? RequestedAssetType.ZRX : RequestedAssetType.WETH; - const takerToken = await zeroEx.tokenRegistry.getTokenBySymbolIfExistsAsync(takerTokenSymbol); - if (_.isUndefined(takerToken)) { - throw new Error(`Unsupported asset type: ${requestedAssetType}`); + const takerTokenIfExists = _.get(TOKENS_BY_NETWORK, [networkConfig.networkId, takerTokenSymbol]); + if (_.isUndefined(takerTokenIfExists)) { + throw new Error(`Unsupported asset type: ${takerTokenSymbol}`); } - const makerAssetAmount = ZeroEx.toBaseUnitAmount(new BigNumber(0.1), makerToken.decimals); - const takerAssetAmount = ZeroEx.toBaseUnitAmount(new BigNumber(0.1), takerToken.decimals); + + const makerAssetAmount = Web3Wrapper.toBaseUnitAmount(ASSET_AMOUNT, makerTokenIfExists.decimals); + const takerAssetAmount = Web3Wrapper.toBaseUnitAmount(ASSET_AMOUNT, takerTokenIfExists.decimals); + const makerAssetData = assetDataUtils.encodeERC20AssetData(makerTokenIfExists.address); + const takerAssetData = assetDataUtils.encodeERC20AssetData(takerTokenIfExists.address); const order: Order = { - senderAddress: configs.DISPENSER_ADDRESS, makerAddress: configs.DISPENSER_ADDRESS, - takerAddress: req.params.recipient, - makerFee: new BigNumber(0), - takerFee: new BigNumber(0), + takerAddress: req.params.recipient as string, + makerFee: ZERO, + takerFee: ZERO, makerAssetAmount, takerAssetAmount, - makerAssetData: makerToken.address, - takerAssetData: takerToken.address, - salt: ZeroEx.generatePseudoRandomSalt(), - exchangeAddress: zeroEx.exchange.getContractAddress(), - feeRecipientAddress: ZeroEx.NULL_ADDRESS, - expirationTimeSeconds: new BigNumber(Date.now() + FIVE_DAYS_IN_MS), + makerAssetData, + takerAssetData, + salt: generatePseudoRandomSalt(), + exchangeAddress: networkConfig.contractWrappers.exchange.getContractAddress(), + feeRecipientAddress: NULL_ADDRESS, + senderAddress: NULL_ADDRESS, + // tslint:disable-next-line:custom-no-magic-numbers + expirationTimeSeconds: new BigNumber(Date.now() + FIVE_DAYS_IN_MS).div(1000).floor(), }; - const orderHash = ZeroEx.getOrderHashHex(order); - const signature = await zeroEx.signOrderHashAsync(orderHash, configs.DISPENSER_ADDRESS, false); - const signedOrder = { + const orderHash = orderHashUtils.getOrderHashHex(order); + const signature = await signatureUtils.ecSignOrderHashAsync( + networkConfig.web3Wrapper.getProvider(), + orderHash, + configs.DISPENSER_ADDRESS, + SignerType.Default, + ); + const signedOrder: SignedOrder = { ...order, - ecSignature: signature, + signature, }; const payload = JSON.stringify(signedOrder); logUtils.log(`Dispensed signed order: ${payload}`); |