1 files changed, 111 insertions, 0 deletions
diff --git a/packages/pipeline/src/parsers/events/index.ts b/packages/pipeline/src/parsers/events/index.ts
new file mode 100644
index 000000000..66f382dda
--- /dev/null
+++ b/packages/pipeline/src/parsers/events/index.ts
@@ -0,0 +1,111 @@
+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 } from '../../entities/ExchangeCancelEvent';
+import { ExchangeCancelUpToEvent } from '../../entities/ExchangeCancelUpToEvent';
+import { ExchangeFillEvent } from '../../entities/ExchangeFillEvent';
+import { bigNumbertoStringOrNull } from '../../utils';
+
+export type ExchangeEventEntity = ExchangeFillEvent | ExchangeCancelEvent | ExchangeCancelUpToEvent;
+
+export const parseExchangeEvents: (
+    eventLogs: Array<LogWithDecodedArgs<ExchangeEventArgs>>,
+) => ExchangeEventEntity[] = R.map(_convertToEntity);
+
+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;
+}