Update to use ContractWrappers + Infura instead of Etherscan

7 files changed, 73 insertions, 383 deletions

diff --git a/packages/pipeline/src/data_sources/etherscan/index.ts b/packages/pipeline/src/data_sources/etherscan/index.ts
deleted file mode 100644
index 044fff02e..000000000
--- a/packages/pipeline/src/data_sources/etherscan/index.ts
+++ /dev/null
@@ -1,52 +0,0 @@
-import { default as axios } from 'axios';
-import { BlockParam, BlockParamLiteral } from 'ethereum-types';
-
-const ETHERSCAN_URL = 'https://api.etherscan.io/api';
-
-export class Etherscan {
-    private readonly _apiKey: string;
-    constructor(apiKey: string) {
-        this._apiKey = apiKey;
-    }
-
-    /**
-     * Gets the raw events for a specific contract and block range.
-     * @param contractAddress  The address of the contract to get the events for.
-     * @param fromBlock The start of the block range to get events for (inclusive).
-     * @param toBlock The end of the block range to get events for (inclusive).
-     * @returns A list of decoded events.
-     */
-    public async getContractEventsAsync(
-        contractAddress: string,
-        fromBlock: BlockParam = BlockParamLiteral.Earliest,
-        toBlock: BlockParam = BlockParamLiteral.Latest,
-    ): Promise<EventsResponse> {
-        const fullURL = `${ETHERSCAN_URL}?module=logs&action=getLogs&address=${contractAddress}&fromBlock=${fromBlock}&toBlock=${toBlock}&apikey=${
-            this._apiKey
-        }`;
-        const resp = await axios.get<EventsResponse>(fullURL);
-        // TODO(albrow): Check response code.
-        return resp.data;
-    }
-}
-
-// Raw events response from etherescan.io
-export interface EventsResponse {
-    status: string;
-    message: string;
-    result: EventsResponseResult[];
-}
-
-// Events as represented in the response from etherscan.io
-export interface EventsResponseResult {
-    address: string;
-    topics: string[];
-    data: string;
-    blockNumber: string;
-    timeStamp: string;
-    gasPrice: string;
-    gasUsed: string;
-    logIndex: string;
-    transactionHash: string;
-    transactionIndex: string;
-}
diff --git a/packages/pipeline/src/data_types/events/event_utils.ts b/packages/pipeline/src/data_types/events/event_utils.ts
deleted file mode 100644
index 6be964807..000000000
--- a/packages/pipeline/src/data_types/events/event_utils.ts
+++ /dev/null
@@ -1,35 +0,0 @@
-import { AbiDecoder } from '@0xproject/utils';
-import { AbiDefinition, LogEntry, LogWithDecodedArgs } from 'ethereum-types';
-
-import { EventsResponseResult } from '../../data_sources/etherscan';
-
-const hexRadix = 16;
-
-function hexToInt(hex: string): number {
-    return parseInt(hex.replace('0x', ''), hexRadix);
-}
-
-// Converts a raw event response to a LogEntry
-export function convertResponseToLogEntry(result: EventsResponseResult): LogEntry {
-    return {
-        logIndex: hexToInt(result.logIndex),
-        transactionIndex: hexToInt(result.transactionIndex),
-        transactionHash: result.transactionHash,
-        blockHash: '',
-        blockNumber: hexToInt(result.blockNumber),
-        address: result.address,
-        data: result.data,
-        topics: result.topics,
-    };
-}
-
-// Decodes a LogEntry into a LogWithDecodedArgs
-export function decodeLogEntry<EventArgsType>(
-    contractAbi: AbiDefinition[],
-    log: LogEntry,
-): LogWithDecodedArgs<EventArgsType> {
-    const abiDecoder = new AbiDecoder([contractAbi]);
-    const logWithDecodedArgs = abiDecoder.tryToDecodeLogOrNoop<EventArgsType>(log);
-    // tslint:disable-next-line:no-unnecessary-type-assertion
-    return logWithDecodedArgs as LogWithDecodedArgs<EventArgsType>;
-}
diff --git a/packages/pipeline/src/data_types/events/exchange_events.ts b/packages/pipeline/src/data_types/events/exchange_events.ts
deleted file mode 100644
index 30ef058f3..000000000
--- a/packages/pipeline/src/data_types/events/exchange_events.ts
+++ /dev/null
@@ -1,130 +0,0 @@
-import { Exchange } from '@0xproject/contract-artifacts';
-import {
-    ExchangeCancelEventArgs,
-    ExchangeCancelUpToEventArgs,
-    ExchangeEventArgs,
-    ExchangeFillEventArgs,
-} from '@0xproject/contract-wrappers';
-import { assetDataUtils } from '@0xproject/order-utils';
-import { AssetProxyId, ERC721AssetData } from '@0xproject/types';
-import { LogWithDecodedArgs } from 'ethereum-types';
-import * as R from 'ramda';
-
-import { EventsResponse } from '../../data_sources/etherscan';
-import { ExchangeCancelEvent } from '../../entities/ExchangeCancelEvent';
-import { ExchangeCancelUpToEvent } from '../../entities/ExchangeCancelUpToEvent';
-import { ExchangeFillEvent } from '../../entities/ExchangeFillEvent';
-import { bigNumbertoStringOrNull } from '../../utils';
-
-import { convertResponseToLogEntry, decodeLogEntry } from './event_utils';
-
-export type ExchangeEventEntity = ExchangeFillEvent | ExchangeCancelEvent | ExchangeCancelUpToEvent;
-
-export function parseExchangeEvents(rawEventsResponse: EventsResponse): ExchangeEventEntity[] {
-    const logEntries = R.map(convertResponseToLogEntry, rawEventsResponse.result);
-    const decodedLogEntries = R.map(
-        eventResponse => decodeLogEntry<ExchangeEventArgs>(Exchange.compilerOutput.abi, eventResponse),
-        logEntries,
-    );
-    const filteredLogEntries = R.filter(shouldIncludeLogEntry, decodedLogEntries);
-    return R.map(_convertToEntity, filteredLogEntries);
-}
-
-export function shouldIncludeLogEntry(logEntry: LogWithDecodedArgs<ExchangeEventArgs>): boolean {
-    if (!R.contains(logEntry.event, ['Fill', 'Cancel', 'CancelUpTo'])) {
-        return false;
-    } else if (logEntry.logIndex == null || isNaN(logEntry.logIndex)) {
-        return false;
-    }
-    return true;
-}
-
-export function _convertToEntity(eventLog: LogWithDecodedArgs<ExchangeEventArgs>): ExchangeEventEntity {
-    switch (eventLog.event) {
-        case 'Fill':
-            return _convertToExchangeFillEvent(eventLog as LogWithDecodedArgs<ExchangeFillEventArgs>);
-        case 'Cancel':
-            return _convertToExchangeCancelEvent(eventLog as LogWithDecodedArgs<ExchangeCancelEventArgs>);
-        case 'CancelUpTo':
-            return _convertToExchangeCancelUpToEvent(eventLog as LogWithDecodedArgs<ExchangeCancelUpToEventArgs>);
-        default:
-            throw new Error('unexpected eventLog.event type: ' + eventLog.event);
-    }
-}
-
-export function _convertToExchangeFillEvent(eventLog: LogWithDecodedArgs<ExchangeFillEventArgs>): ExchangeFillEvent {
-    const makerAssetData = assetDataUtils.decodeAssetDataOrThrow(eventLog.args.makerAssetData);
-    const makerAssetType = makerAssetData.assetProxyId === AssetProxyId.ERC20 ? 'erc20' : 'erc721';
-    const takerAssetData = assetDataUtils.decodeAssetDataOrThrow(eventLog.args.takerAssetData);
-    const takerAssetType = takerAssetData.assetProxyId === AssetProxyId.ERC20 ? 'erc20' : 'erc721';
-    const exchangeFillEvent = new ExchangeFillEvent();
-    exchangeFillEvent.contractAddress = eventLog.address as string;
-    exchangeFillEvent.blockNumber = eventLog.blockNumber as number;
-    exchangeFillEvent.logIndex = eventLog.logIndex as number;
-    exchangeFillEvent.rawData = eventLog.data as string;
-    exchangeFillEvent.makerAddress = eventLog.args.makerAddress.toString();
-    exchangeFillEvent.takerAddress = eventLog.args.takerAddress.toString();
-    exchangeFillEvent.feeRecepientAddress = eventLog.args.feeRecipientAddress;
-    exchangeFillEvent.senderAddress = eventLog.args.senderAddress;
-    exchangeFillEvent.makerAssetFilledAmount = eventLog.args.makerAssetFilledAmount.toString();
-    exchangeFillEvent.takerAssetFilledAmount = eventLog.args.takerAssetFilledAmount.toString();
-    exchangeFillEvent.makerFeePaid = eventLog.args.makerFeePaid.toString();
-    exchangeFillEvent.takerFeePaid = eventLog.args.takerFeePaid.toString();
-    exchangeFillEvent.orderHash = eventLog.args.orderHash;
-    exchangeFillEvent.rawMakerAssetData = eventLog.args.makerAssetData;
-    exchangeFillEvent.makerAssetType = makerAssetType;
-    exchangeFillEvent.makerAssetProxyId = makerAssetData.assetProxyId;
-    exchangeFillEvent.makerTokenAddress = makerAssetData.tokenAddress;
-    exchangeFillEvent.makerTokenId = bigNumbertoStringOrNull((makerAssetData as ERC721AssetData).tokenId);
-    exchangeFillEvent.rawTakerAssetData = eventLog.args.takerAssetData;
-    exchangeFillEvent.takerAssetType = takerAssetType;
-    exchangeFillEvent.takerAssetProxyId = takerAssetData.assetProxyId;
-    exchangeFillEvent.takerTokenAddress = takerAssetData.tokenAddress;
-    exchangeFillEvent.takerTokenId = bigNumbertoStringOrNull((takerAssetData as ERC721AssetData).tokenId);
-    return exchangeFillEvent;
-}
-
-export function _convertToExchangeCancelEvent(
-    eventLog: LogWithDecodedArgs<ExchangeCancelEventArgs>,
-): ExchangeCancelEvent {
-    const makerAssetData = assetDataUtils.decodeAssetDataOrThrow(eventLog.args.makerAssetData);
-    const makerAssetType = makerAssetData.assetProxyId === AssetProxyId.ERC20 ? 'erc20' : 'erc721';
-    const takerAssetData = assetDataUtils.decodeAssetDataOrThrow(eventLog.args.takerAssetData);
-    const takerAssetType = takerAssetData.assetProxyId === AssetProxyId.ERC20 ? 'erc20' : 'erc721';
-    const exchangeCancelEvent = new ExchangeCancelEvent();
-    exchangeCancelEvent.contractAddress = eventLog.address as string;
-    exchangeCancelEvent.blockNumber = eventLog.blockNumber as number;
-    exchangeCancelEvent.logIndex = eventLog.logIndex as number;
-    exchangeCancelEvent.rawData = eventLog.data as string;
-    exchangeCancelEvent.makerAddress = eventLog.args.makerAddress.toString();
-    exchangeCancelEvent.takerAddress =
-        eventLog.args.takerAddress == null ? null : eventLog.args.takerAddress.toString();
-    exchangeCancelEvent.feeRecepientAddress = eventLog.args.feeRecipientAddress;
-    exchangeCancelEvent.senderAddress = eventLog.args.senderAddress;
-    exchangeCancelEvent.orderHash = eventLog.args.orderHash;
-    exchangeCancelEvent.rawMakerAssetData = eventLog.args.makerAssetData;
-    exchangeCancelEvent.makerAssetType = makerAssetType;
-    exchangeCancelEvent.makerAssetProxyId = makerAssetData.assetProxyId;
-    exchangeCancelEvent.makerTokenAddress = makerAssetData.tokenAddress;
-    exchangeCancelEvent.makerTokenId = bigNumbertoStringOrNull((makerAssetData as ERC721AssetData).tokenId);
-    exchangeCancelEvent.rawTakerAssetData = eventLog.args.takerAssetData;
-    exchangeCancelEvent.takerAssetType = takerAssetType;
-    exchangeCancelEvent.takerAssetProxyId = takerAssetData.assetProxyId;
-    exchangeCancelEvent.takerTokenAddress = takerAssetData.tokenAddress;
-    exchangeCancelEvent.takerTokenId = bigNumbertoStringOrNull((takerAssetData as ERC721AssetData).tokenId);
-    return exchangeCancelEvent;
-}
-
-export function _convertToExchangeCancelUpToEvent(
-    eventLog: LogWithDecodedArgs<ExchangeCancelUpToEventArgs>,
-): ExchangeCancelUpToEvent {
-    const exchangeCancelUpToEvent = new ExchangeCancelUpToEvent();
-    exchangeCancelUpToEvent.contractAddress = eventLog.address as string;
-    exchangeCancelUpToEvent.blockNumber = eventLog.blockNumber as number;
-    exchangeCancelUpToEvent.logIndex = eventLog.logIndex as number;
-    exchangeCancelUpToEvent.rawData = eventLog.data as string;
-    exchangeCancelUpToEvent.makerAddress = eventLog.args.makerAddress.toString();
-    exchangeCancelUpToEvent.senderAddress = eventLog.args.senderAddress.toString();
-    exchangeCancelUpToEvent.orderEpoch = eventLog.args.orderEpoch.toString();
-    return exchangeCancelUpToEvent;
-}
diff --git a/packages/pipeline/src/data_types/sra_orders/index.ts b/packages/pipeline/src/data_types/sra_orders/index.ts
deleted file mode 100644
index fb2b74dfe..000000000
--- a/packages/pipeline/src/data_types/sra_orders/index.ts
+++ /dev/null
@@ -1,54 +0,0 @@
-import { APIOrder, OrdersResponse } from '@0xproject/connect';
-import { assetDataUtils, orderHashUtils } from '@0xproject/order-utils';
-import { AssetProxyId, ERC721AssetData } from '@0xproject/types';
-import * as R from 'ramda';
-
-import { SraOrder } from '../../entities/SraOrder';
-import { bigNumbertoStringOrNull } from '../../utils';
-
-export function parseSraOrders(rawOrdersResponse: OrdersResponse): SraOrder[] {
-    return R.map(_convertToEntity, rawOrdersResponse.records);
-}
-
-export function _convertToEntity(apiOrder: APIOrder): SraOrder {
-    // TODO(albrow): refactor out common asset data decoding code.
-    const makerAssetData = assetDataUtils.decodeAssetDataOrThrow(apiOrder.order.makerAssetData);
-    const makerAssetType = makerAssetData.assetProxyId === AssetProxyId.ERC20 ? 'erc20' : 'erc721';
-    const takerAssetData = assetDataUtils.decodeAssetDataOrThrow(apiOrder.order.takerAssetData);
-    const takerAssetType = takerAssetData.assetProxyId === AssetProxyId.ERC20 ? 'erc20' : 'erc721';
-
-    const sraOrder = new SraOrder();
-    sraOrder.exchangeAddress = apiOrder.order.exchangeAddress;
-    sraOrder.orderHashHex = orderHashUtils.getOrderHashHex(apiOrder.order);
-
-    // TODO(albrow): Set these fields to the correct values upstack.
-    sraOrder.lastUpdatedTimestamp = 0;
-    sraOrder.firstSeenTimestamp = 0;
-
-    sraOrder.makerAddress = apiOrder.order.makerAddress;
-    sraOrder.takerAddress = apiOrder.order.takerAddress;
-    sraOrder.feeRecipientAddress = apiOrder.order.feeRecipientAddress;
-    sraOrder.senderAddress = apiOrder.order.senderAddress;
-    sraOrder.makerAssetAmount = apiOrder.order.makerAssetAmount.toString();
-    sraOrder.takerAssetAmount = apiOrder.order.takerAssetAmount.toString();
-    sraOrder.makerFee = apiOrder.order.makerFee.toString();
-    sraOrder.takerFee = apiOrder.order.takerFee.toString();
-    sraOrder.expirationTimeSeconds = apiOrder.order.expirationTimeSeconds.toString();
-    sraOrder.salt = apiOrder.order.salt.toString();
-    sraOrder.signature = apiOrder.order.signature;
-
-    sraOrder.rawMakerAssetData = apiOrder.order.makerAssetData;
-    sraOrder.makerAssetType = makerAssetType;
-    sraOrder.makerAssetProxyId = makerAssetData.assetProxyId;
-    sraOrder.makerTokenAddress = makerAssetData.tokenAddress;
-    sraOrder.makerTokenId = bigNumbertoStringOrNull((makerAssetData as ERC721AssetData).tokenId);
-    sraOrder.rawTakerAssetData = apiOrder.order.takerAssetData;
-    sraOrder.takerAssetType = takerAssetType;
-    sraOrder.takerAssetProxyId = takerAssetData.assetProxyId;
-    sraOrder.takerTokenAddress = takerAssetData.tokenAddress;
-    sraOrder.takerTokenId = bigNumbertoStringOrNull((takerAssetData as ERC721AssetData).tokenId);
-
-    sraOrder.metaDataJson = JSON.stringify(apiOrder.metaData);
-
-    return sraOrder;
-}
diff --git a/packages/pipeline/src/index.ts b/packages/pipeline/src/index.ts
index a1dbb35ff..77c92cc34 100644
--- a/packages/pipeline/src/index.ts
+++ b/packages/pipeline/src/index.ts
@@ -1,52 +1,43 @@
 import { HttpClient } from '@0xproject/connect';
+import { web3Factory } from '@0xproject/dev-utils';
 import 'reflect-metadata';
 import { Connection, createConnection } from 'typeorm';
 
-import { Etherscan } from './data_sources/etherscan';
-import { parseExchangeEvents } from './data_types/events/exchange_events';
-import { parseSraOrders } from './data_types/sra_orders';
-import { ExchangeCancelEvent } from './entities/ExchangeCancelEvent';
-import { ExchangeCancelUpToEvent } from './entities/ExchangeCancelUpToEvent';
-import { ExchangeFillEvent } from './entities/ExchangeFillEvent';
+import { ExchangeEventsSource } from './data_sources/contract-wrappers/exchange_events';
 import { SraOrder } from './entities/SraOrder';
 import { config } from './ormconfig';
-
-const etherscan = new Etherscan(process.env.ETHERSCAN_API_KEY as string);
-const EXCHANGE_ADDRESS = '0x4f833a24e1f95d70f028921e27040ca56e09ab0b';
+import { parseExchangeEvents } from './parsers/events';
+import { parseSraOrders } from './parsers/sra_orders';
 
 let connection: Connection;
 
 (async () => {
     connection = await createConnection(config);
     await getExchangeEventsAsync();
-    await getSraOrdersAsync();
+    // await getSraOrdersAsync();
 })();
 
+// TODO(albrow): Separately: Errors do not appear to be handled correctly. If you use the
+// wrong rpcUrl it just returns early with no error.
 async function getExchangeEventsAsync(): Promise<void> {
-    const fillRepository = connection.getRepository(ExchangeFillEvent);
-    const cancelRepository = connection.getRepository(ExchangeCancelEvent);
-    const cancelUpToRepository = connection.getRepository(ExchangeCancelUpToEvent);
-    console.log(
-        `found ${(await fillRepository.count()) +
-            (await cancelRepository.count()) +
-            (await cancelUpToRepository.count())} existing events`,
-    );
-    const rawEvents = await etherscan.getContractEventsAsync(EXCHANGE_ADDRESS);
-    const events = parseExchangeEvents(rawEvents);
+    const provider = web3Factory.getRpcProvider({
+        rpcUrl: 'https://mainnet.infura.io',
+    });
+    const exchangeEvents = new ExchangeEventsSource(provider, 1);
+    const eventLogs = await exchangeEvents.getFillEventsAsync();
+    const events = parseExchangeEvents(eventLogs);
+    console.log('Got events: ' + events.length);
     for (const event of events) {
         await event.save();
     }
-    console.log(
-        `now there are ${(await fillRepository.count()) +
-            (await cancelRepository.count()) +
-            (await cancelUpToRepository.count())} total events`,
-    );
+    console.log('Saved events.');
+    console.log('Exiting process');
+    process.exit(0);
 }
 
 async function getSraOrdersAsync(): Promise<void> {
     const orderRepository = connection.getRepository(SraOrder);
     console.log(`found ${await orderRepository.count()} existing orders`);
-
     const sraUrl = 'https://api.radarrelay.com/0x/v2';
     const connect = new HttpClient(sraUrl);
     const rawOrders = await connect.getOrdersAsync();
diff --git a/packages/pipeline/src/parsers/events/index.ts b/packages/pipeline/src/parsers/events/index.ts
index e18106c75..66f382dda 100644
--- a/packages/pipeline/src/parsers/events/index.ts
+++ b/packages/pipeline/src/parsers/events/index.ts
@@ -1,43 +1,38 @@
-import { ExchangeCancelEventArgs, ExchangeCancelUpToEventArgs, ExchangeFillEventArgs } from '@0x/contract-wrappers';
-import { assetDataUtils } from '@0x/order-utils';
-import { AssetProxyId, ERC721AssetData } from '@0x/types';
+import {
+    ExchangeCancelEventArgs,
+    ExchangeCancelUpToEventArgs,
+    ExchangeEventArgs,
+    ExchangeFillEventArgs,
+} from '@0xproject/contract-wrappers';
+import { assetDataUtils } from '@0xproject/order-utils';
+import { AssetProxyId, ERC721AssetData } from '@0xproject/types';
 import { LogWithDecodedArgs } from 'ethereum-types';
 import * as R from 'ramda';
 
-import { ExchangeCancelEvent, ExchangeCancelUpToEvent, ExchangeFillEvent } from '../../entities';
+import { ExchangeCancelEvent } from '../../entities/ExchangeCancelEvent';
+import { ExchangeCancelUpToEvent } from '../../entities/ExchangeCancelUpToEvent';
+import { ExchangeFillEvent } from '../../entities/ExchangeFillEvent';
 import { bigNumbertoStringOrNull } from '../../utils';
 
-/**
- * Parses raw event logs for a fill event and returns an array of
- * ExchangeFillEvent entities.
- * @param eventLogs Raw event logs (e.g. returned from contract-wrappers).
- */
-export const parseExchangeFillEvents: (
-    eventLogs: Array<LogWithDecodedArgs<ExchangeFillEventArgs>>,
-) => ExchangeFillEvent[] = R.map(_convertToExchangeFillEvent);
+export type ExchangeEventEntity = ExchangeFillEvent | ExchangeCancelEvent | ExchangeCancelUpToEvent;
 
-/**
- * Parses raw event logs for a cancel event and returns an array of
- * ExchangeCancelEvent entities.
- * @param eventLogs Raw event logs (e.g. returned from contract-wrappers).
- */
-export const parseExchangeCancelEvents: (
-    eventLogs: Array<LogWithDecodedArgs<ExchangeCancelEventArgs>>,
-) => ExchangeCancelEvent[] = R.map(_convertToExchangeCancelEvent);
+export const parseExchangeEvents: (
+    eventLogs: Array<LogWithDecodedArgs<ExchangeEventArgs>>,
+) => ExchangeEventEntity[] = R.map(_convertToEntity);
 
-/**
- * Parses raw event logs for a CancelUpTo event and returns an array of
- * ExchangeCancelUpToEvent entities.
- * @param eventLogs Raw event logs (e.g. returned from contract-wrappers).
- */
-export const parseExchangeCancelUpToEvents: (
-    eventLogs: Array<LogWithDecodedArgs<ExchangeCancelUpToEventArgs>>,
-) => ExchangeCancelUpToEvent[] = R.map(_convertToExchangeCancelUpToEvent);
+export function _convertToEntity(eventLog: LogWithDecodedArgs<ExchangeEventArgs>): ExchangeEventEntity {
+    switch (eventLog.event) {
+        case 'Fill':
+            return _convertToExchangeFillEvent(eventLog as LogWithDecodedArgs<ExchangeFillEventArgs>);
+        case 'Cancel':
+            return _convertToExchangeCancelEvent(eventLog as LogWithDecodedArgs<ExchangeCancelEventArgs>);
+        case 'CancelUpTo':
+            return _convertToExchangeCancelUpToEvent(eventLog as LogWithDecodedArgs<ExchangeCancelUpToEventArgs>);
+        default:
+            throw new Error('unexpected eventLog.event type: ' + eventLog.event);
+    }
+}
 
-/**
- * Converts a raw event log for a fill event into an ExchangeFillEvent entity.
- * @param eventLog Raw event log (e.g. returned from contract-wrappers).
- */
 export function _convertToExchangeFillEvent(eventLog: LogWithDecodedArgs<ExchangeFillEventArgs>): ExchangeFillEvent {
     const makerAssetData = assetDataUtils.decodeAssetDataOrThrow(eventLog.args.makerAssetData);
     const makerAssetType = makerAssetData.assetProxyId === AssetProxyId.ERC20 ? 'erc20' : 'erc721';
@@ -48,37 +43,28 @@ export function _convertToExchangeFillEvent(eventLog: LogWithDecodedArgs<Exchang
     exchangeFillEvent.blockNumber = eventLog.blockNumber as number;
     exchangeFillEvent.logIndex = eventLog.logIndex as number;
     exchangeFillEvent.rawData = eventLog.data as string;
-    exchangeFillEvent.transactionHash = eventLog.transactionHash;
-    exchangeFillEvent.makerAddress = eventLog.args.makerAddress;
-    exchangeFillEvent.takerAddress = eventLog.args.takerAddress;
-    exchangeFillEvent.feeRecipientAddress = eventLog.args.feeRecipientAddress;
+    exchangeFillEvent.makerAddress = eventLog.args.makerAddress.toString();
+    exchangeFillEvent.takerAddress = eventLog.args.takerAddress.toString();
+    exchangeFillEvent.feeRecepientAddress = eventLog.args.feeRecipientAddress;
     exchangeFillEvent.senderAddress = eventLog.args.senderAddress;
-    exchangeFillEvent.makerAssetFilledAmount = eventLog.args.makerAssetFilledAmount;
-    exchangeFillEvent.takerAssetFilledAmount = eventLog.args.takerAssetFilledAmount;
-    exchangeFillEvent.makerFeePaid = eventLog.args.makerFeePaid;
-    exchangeFillEvent.takerFeePaid = eventLog.args.takerFeePaid;
+    exchangeFillEvent.makerAssetFilledAmount = eventLog.args.makerAssetFilledAmount.toString();
+    exchangeFillEvent.takerAssetFilledAmount = eventLog.args.takerAssetFilledAmount.toString();
+    exchangeFillEvent.makerFeePaid = eventLog.args.makerFeePaid.toString();
+    exchangeFillEvent.takerFeePaid = eventLog.args.takerFeePaid.toString();
     exchangeFillEvent.orderHash = eventLog.args.orderHash;
     exchangeFillEvent.rawMakerAssetData = eventLog.args.makerAssetData;
     exchangeFillEvent.makerAssetType = makerAssetType;
     exchangeFillEvent.makerAssetProxyId = makerAssetData.assetProxyId;
     exchangeFillEvent.makerTokenAddress = makerAssetData.tokenAddress;
-    // tslint has a false positive here. Type assertion is required.
-    // tslint:disable-next-line:no-unnecessary-type-assertion
     exchangeFillEvent.makerTokenId = bigNumbertoStringOrNull((makerAssetData as ERC721AssetData).tokenId);
     exchangeFillEvent.rawTakerAssetData = eventLog.args.takerAssetData;
     exchangeFillEvent.takerAssetType = takerAssetType;
     exchangeFillEvent.takerAssetProxyId = takerAssetData.assetProxyId;
     exchangeFillEvent.takerTokenAddress = takerAssetData.tokenAddress;
-    // tslint:disable-next-line:no-unnecessary-type-assertion
     exchangeFillEvent.takerTokenId = bigNumbertoStringOrNull((takerAssetData as ERC721AssetData).tokenId);
     return exchangeFillEvent;
 }
 
-/**
- * Converts a raw event log for a cancel event into an ExchangeCancelEvent
- * entity.
- * @param eventLog Raw event log (e.g. returned from contract-wrappers).
- */
 export function _convertToExchangeCancelEvent(
     eventLog: LogWithDecodedArgs<ExchangeCancelEventArgs>,
 ): ExchangeCancelEvent {
@@ -91,32 +77,25 @@ export function _convertToExchangeCancelEvent(
     exchangeCancelEvent.blockNumber = eventLog.blockNumber as number;
     exchangeCancelEvent.logIndex = eventLog.logIndex as number;
     exchangeCancelEvent.rawData = eventLog.data as string;
-    exchangeCancelEvent.transactionHash = eventLog.transactionHash;
-    exchangeCancelEvent.makerAddress = eventLog.args.makerAddress;
-    exchangeCancelEvent.takerAddress = eventLog.args.takerAddress;
-    exchangeCancelEvent.feeRecipientAddress = eventLog.args.feeRecipientAddress;
+    exchangeCancelEvent.makerAddress = eventLog.args.makerAddress.toString();
+    exchangeCancelEvent.takerAddress =
+        eventLog.args.takerAddress == null ? null : eventLog.args.takerAddress.toString();
+    exchangeCancelEvent.feeRecepientAddress = eventLog.args.feeRecipientAddress;
     exchangeCancelEvent.senderAddress = eventLog.args.senderAddress;
     exchangeCancelEvent.orderHash = eventLog.args.orderHash;
     exchangeCancelEvent.rawMakerAssetData = eventLog.args.makerAssetData;
     exchangeCancelEvent.makerAssetType = makerAssetType;
     exchangeCancelEvent.makerAssetProxyId = makerAssetData.assetProxyId;
     exchangeCancelEvent.makerTokenAddress = makerAssetData.tokenAddress;
-    // tslint:disable-next-line:no-unnecessary-type-assertion
     exchangeCancelEvent.makerTokenId = bigNumbertoStringOrNull((makerAssetData as ERC721AssetData).tokenId);
     exchangeCancelEvent.rawTakerAssetData = eventLog.args.takerAssetData;
     exchangeCancelEvent.takerAssetType = takerAssetType;
     exchangeCancelEvent.takerAssetProxyId = takerAssetData.assetProxyId;
     exchangeCancelEvent.takerTokenAddress = takerAssetData.tokenAddress;
-    // tslint:disable-next-line:no-unnecessary-type-assertion
     exchangeCancelEvent.takerTokenId = bigNumbertoStringOrNull((takerAssetData as ERC721AssetData).tokenId);
     return exchangeCancelEvent;
 }
 
-/**
- * Converts a raw event log for a cancelUpTo event into an
- * ExchangeCancelUpToEvent entity.
- * @param eventLog Raw event log (e.g. returned from contract-wrappers).
- */
 export function _convertToExchangeCancelUpToEvent(
     eventLog: LogWithDecodedArgs<ExchangeCancelUpToEventArgs>,
 ): ExchangeCancelUpToEvent {
@@ -125,9 +104,8 @@ export function _convertToExchangeCancelUpToEvent(
     exchangeCancelUpToEvent.blockNumber = eventLog.blockNumber as number;
     exchangeCancelUpToEvent.logIndex = eventLog.logIndex as number;
     exchangeCancelUpToEvent.rawData = eventLog.data as string;
-    exchangeCancelUpToEvent.transactionHash = eventLog.transactionHash;
-    exchangeCancelUpToEvent.makerAddress = eventLog.args.makerAddress;
-    exchangeCancelUpToEvent.senderAddress = eventLog.args.senderAddress;
-    exchangeCancelUpToEvent.orderEpoch = eventLog.args.orderEpoch;
+    exchangeCancelUpToEvent.makerAddress = eventLog.args.makerAddress.toString();
+    exchangeCancelUpToEvent.senderAddress = eventLog.args.senderAddress.toString();
+    exchangeCancelUpToEvent.orderEpoch = eventLog.args.orderEpoch.toString();
     return exchangeCancelUpToEvent;
 }
diff --git a/packages/pipeline/src/parsers/sra_orders/index.ts b/packages/pipeline/src/parsers/sra_orders/index.ts
index ef8901e40..fb2b74dfe 100644
--- a/packages/pipeline/src/parsers/sra_orders/index.ts
+++ b/packages/pipeline/src/parsers/sra_orders/index.ts
@@ -1,24 +1,15 @@
-import { APIOrder, OrdersResponse } from '@0x/connect';
-import { assetDataUtils, orderHashUtils } from '@0x/order-utils';
-import { AssetProxyId, ERC721AssetData } from '@0x/types';
+import { APIOrder, OrdersResponse } from '@0xproject/connect';
+import { assetDataUtils, orderHashUtils } from '@0xproject/order-utils';
+import { AssetProxyId, ERC721AssetData } from '@0xproject/types';
 import * as R from 'ramda';
 
-import { SraOrder } from '../../entities';
+import { SraOrder } from '../../entities/SraOrder';
 import { bigNumbertoStringOrNull } from '../../utils';
 
-/**
- * Parses a raw order response from an SRA endpoint and returns an array of
- * SraOrder entities.
- * @param rawOrdersResponse A raw order response from an SRA endpoint.
- */
 export function parseSraOrders(rawOrdersResponse: OrdersResponse): SraOrder[] {
     return R.map(_convertToEntity, rawOrdersResponse.records);
 }
 
-/**
- * Converts a single APIOrder into an SraOrder entity.
- * @param apiOrder A single order from the response from an SRA endpoint.
- */
 export function _convertToEntity(apiOrder: APIOrder): SraOrder {
     // TODO(albrow): refactor out common asset data decoding code.
     const makerAssetData = assetDataUtils.decodeAssetDataOrThrow(apiOrder.order.makerAssetData);
@@ -30,33 +21,34 @@ export function _convertToEntity(apiOrder: APIOrder): SraOrder {
     sraOrder.exchangeAddress = apiOrder.order.exchangeAddress;
     sraOrder.orderHashHex = orderHashUtils.getOrderHashHex(apiOrder.order);
 
+    // TODO(albrow): Set these fields to the correct values upstack.
+    sraOrder.lastUpdatedTimestamp = 0;
+    sraOrder.firstSeenTimestamp = 0;
+
     sraOrder.makerAddress = apiOrder.order.makerAddress;
     sraOrder.takerAddress = apiOrder.order.takerAddress;
     sraOrder.feeRecipientAddress = apiOrder.order.feeRecipientAddress;
     sraOrder.senderAddress = apiOrder.order.senderAddress;
-    sraOrder.makerAssetAmount = apiOrder.order.makerAssetAmount;
-    sraOrder.takerAssetAmount = apiOrder.order.takerAssetAmount;
-    sraOrder.makerFee = apiOrder.order.makerFee;
-    sraOrder.takerFee = apiOrder.order.takerFee;
-    sraOrder.expirationTimeSeconds = apiOrder.order.expirationTimeSeconds;
-    sraOrder.salt = apiOrder.order.salt;
+    sraOrder.makerAssetAmount = apiOrder.order.makerAssetAmount.toString();
+    sraOrder.takerAssetAmount = apiOrder.order.takerAssetAmount.toString();
+    sraOrder.makerFee = apiOrder.order.makerFee.toString();
+    sraOrder.takerFee = apiOrder.order.takerFee.toString();
+    sraOrder.expirationTimeSeconds = apiOrder.order.expirationTimeSeconds.toString();
+    sraOrder.salt = apiOrder.order.salt.toString();
     sraOrder.signature = apiOrder.order.signature;
 
     sraOrder.rawMakerAssetData = apiOrder.order.makerAssetData;
     sraOrder.makerAssetType = makerAssetType;
     sraOrder.makerAssetProxyId = makerAssetData.assetProxyId;
     sraOrder.makerTokenAddress = makerAssetData.tokenAddress;
-    // tslint has a false positive here. Type assertion is required.
-    // tslint:disable-next-line:no-unnecessary-type-assertion
     sraOrder.makerTokenId = bigNumbertoStringOrNull((makerAssetData as ERC721AssetData).tokenId);
     sraOrder.rawTakerAssetData = apiOrder.order.takerAssetData;
     sraOrder.takerAssetType = takerAssetType;
     sraOrder.takerAssetProxyId = takerAssetData.assetProxyId;
     sraOrder.takerTokenAddress = takerAssetData.tokenAddress;
-    // tslint:disable-next-line:no-unnecessary-type-assertion
     sraOrder.takerTokenId = bigNumbertoStringOrNull((takerAssetData as ERC721AssetData).tokenId);
 
-    sraOrder.metadataJson = JSON.stringify(apiOrder.metaData);
+    sraOrder.metaDataJson = JSON.stringify(apiOrder.metaData);
 
     return sraOrder;
 }