Merge pull request #1060 from 0xProject/feature/testnet-faucets/v2

[testnet-faucets] update to v2

5 files changed, 134 insertions, 58 deletions

diff --git a/packages/testnet-faucets/package.json b/packages/testnet-faucets/package.json
index ed6dddb41..a2d107f58 100644
--- a/packages/testnet-faucets/package.json
+++ b/packages/testnet-faucets/package.json
@@ -17,7 +17,7 @@
     "author": "Fabio Berger",
     "license": "Apache-2.0",
     "dependencies": {
-        "0x.js": "0.38.5",
+        "0x.js": "1.0.1",
         "@0xproject/subproviders": "^2.0.2",
         "@0xproject/typescript-typings": "^2.0.0",
         "@0xproject/utils": "^1.0.8",
diff --git a/packages/testnet-faucets/src/ts/dispense_asset_tasks.ts b/packages/testnet-faucets/src/ts/dispense_asset_tasks.ts
index 3af5ca747..fa63ab63e 100644
--- a/packages/testnet-faucets/src/ts/dispense_asset_tasks.ts
+++ b/packages/testnet-faucets/src/ts/dispense_asset_tasks.ts
@@ -1,13 +1,14 @@
-import { ZeroEx } from '0x.js';
+import { ERC20TokenWrapper } from '0x.js';
 import { BigNumber, logUtils } from '@0xproject/utils';
 import { Web3Wrapper } from '@0xproject/web3-wrapper';
 import * as _ from 'lodash';
 
 import { configs } from './configs';
+import { TOKENS_BY_NETWORK } from './tokens';
 
 const DISPENSE_AMOUNT_ETHER = 0.1;
-const DISPENSE_AMOUNT_TOKEN = 0.1;
-const DISPENSE_MAX_AMOUNT_TOKEN = 2;
+const DISPENSE_AMOUNT_TOKEN = 1;
+const DISPENSE_MAX_AMOUNT_TOKEN = 100;
 const DISPENSE_MAX_AMOUNT_ETHER = 2;
 
 type AsyncTask = () => Promise<void>;
@@ -32,19 +33,27 @@ export const dispenseAssetTasks = {
             logUtils.log(`Sent ${DISPENSE_AMOUNT_ETHER} ETH to ${recipientAddress} tx: ${txHash}`);
         };
     },
-    dispenseTokenTask(recipientAddress: string, tokenSymbol: string, zeroEx: ZeroEx): AsyncTask {
+    dispenseTokenTask(
+        recipientAddress: string,
+        tokenSymbol: string,
+        networkId: number,
+        erc20TokenWrapper: ERC20TokenWrapper,
+    ): AsyncTask {
         return async () => {
             logUtils.log(`Processing ${tokenSymbol} ${recipientAddress}`);
             const amountToDispense = new BigNumber(DISPENSE_AMOUNT_TOKEN);
-            const token = await zeroEx.tokenRegistry.getTokenBySymbolIfExistsAsync(tokenSymbol);
-            if (_.isUndefined(token)) {
+            const tokenIfExists = _.get(TOKENS_BY_NETWORK, [networkId, tokenSymbol]);
+            if (_.isUndefined(tokenIfExists)) {
                 throw new Error(`Unsupported asset type: ${tokenSymbol}`);
             }
-            const baseUnitAmount = ZeroEx.toBaseUnitAmount(amountToDispense, token.decimals);
-            const userBalanceBaseUnits = await zeroEx.token.getBalanceAsync(token.address, recipientAddress);
-            const maxAmountBaseUnits = ZeroEx.toBaseUnitAmount(
+            const baseUnitAmount = Web3Wrapper.toBaseUnitAmount(amountToDispense, tokenIfExists.decimals);
+            const userBalanceBaseUnits = await erc20TokenWrapper.getBalanceAsync(
+                tokenIfExists.address,
+                recipientAddress,
+            );
+            const maxAmountBaseUnits = Web3Wrapper.toBaseUnitAmount(
                 new BigNumber(DISPENSE_MAX_AMOUNT_TOKEN),
-                token.decimals,
+                tokenIfExists.decimals,
             );
             if (userBalanceBaseUnits.greaterThanOrEqualTo(maxAmountBaseUnits)) {
                 logUtils.log(
@@ -52,13 +61,13 @@ export const dispenseAssetTasks = {
                 );
                 return;
             }
-            const txHash = await zeroEx.token.transferAsync(
-                token.address,
+            const txHash = await erc20TokenWrapper.transferAsync(
+                tokenIfExists.address,
                 configs.DISPENSER_ADDRESS,
                 recipientAddress,
                 baseUnitAmount,
             );
-            logUtils.log(`Sent ${amountToDispense} ZRX to ${recipientAddress} tx: ${txHash}`);
+            logUtils.log(`Sent ${amountToDispense} ${tokenSymbol} to ${recipientAddress} tx: ${txHash}`);
         };
     },
 };
diff --git a/packages/testnet-faucets/src/ts/handler.ts b/packages/testnet-faucets/src/ts/handler.ts
index 3749bc70b..82e9a9494 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:
@@ -131,39 +147,47 @@ 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 makerTokenAmount = ZeroEx.toBaseUnitAmount(new BigNumber(0.1), makerToken.decimals);
-        const takerTokenAmount = 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 = {
-            maker: configs.DISPENSER_ADDRESS,
-            taker: req.params.recipient,
-            makerFee: new BigNumber(0),
-            takerFee: new BigNumber(0),
-            makerTokenAmount,
-            takerTokenAmount,
-            makerTokenAddress: makerToken.address,
-            takerTokenAddress: takerToken.address,
-            salt: ZeroEx.generatePseudoRandomSalt(),
-            exchangeContractAddress: zeroEx.exchange.getContractAddress(),
-            feeRecipient: ZeroEx.NULL_ADDRESS,
-            expirationUnixTimestampSec: new BigNumber(Date.now() + FIVE_DAYS_IN_MS),
+            makerAddress: configs.DISPENSER_ADDRESS,
+            takerAddress: req.params.recipient as string,
+            makerFee: ZERO,
+            takerFee: ZERO,
+            makerAssetAmount,
+            takerAssetAmount,
+            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}`);
diff --git a/packages/testnet-faucets/src/ts/rpc_urls.ts b/packages/testnet-faucets/src/ts/rpc_urls.ts
index f8a57e171..d31908257 100644
--- a/packages/testnet-faucets/src/ts/rpc_urls.ts
+++ b/packages/testnet-faucets/src/ts/rpc_urls.ts
@@ -2,7 +2,6 @@ import { configs } from './configs';
 
 const productionRpcUrls = {
     '3': `https://ropsten.infura.io/${configs.INFURA_API_KEY}`,
-    '4': `https://rinkeby.infura.io/${configs.INFURA_API_KEY}`,
     '42': `https://kovan.infura.io/${configs.INFURA_API_KEY}`,
 };
 
diff --git a/packages/testnet-faucets/src/ts/tokens.ts b/packages/testnet-faucets/src/ts/tokens.ts
new file mode 100644
index 000000000..4ffb03df4
--- /dev/null
+++ b/packages/testnet-faucets/src/ts/tokens.ts
@@ -0,0 +1,44 @@
+interface TokensByNetwork {
+    [networkId: number]: { [tokenSymbol: string]: { address: string; decimals: number } };
+}
+
+export const tokens = {
+    ZRX: {
+        decimals: 18,
+    },
+    WETH: {
+        decimals: 18,
+    },
+};
+export const TOKENS_BY_NETWORK: TokensByNetwork = {
+    3: {
+        ZRX: {
+            ...tokens.ZRX,
+            address: '0xff67881f8d12f372d91baae9752eb3631ff0ed00',
+        },
+        WETH: {
+            ...tokens.WETH,
+            address: '0xc778417e063141139fce010982780140aa0cd5ab',
+        },
+    },
+    42: {
+        ZRX: {
+            ...tokens.ZRX,
+            address: '0x2002d3812f58e35f0ea1ffbf80a75a38c32175fa',
+        },
+        WETH: {
+            ...tokens.WETH,
+            address: '0xd0a1e359811322d97991e03f863a0c30c2cf029c',
+        },
+    },
+    50: {
+        ZRX: {
+            ...tokens.ZRX,
+            address: '0x871dd7c2b4b25e1aa18728e9d5f2af4c4e431f5c',
+        },
+        WETH: {
+            ...tokens.WETH,
+            address: '0x0b1ba0af832d7c05fd64161e0db78e85978e8082',
+        },
+    },
+};