Merge pull request #178 from 0xProject/feature/getLogs

Add zeroEx.getLogsAsync

1 files changed, 21 insertions, 2 deletions

diff --git a/src/contract_wrappers/exchange_wrapper.ts b/src/contract_wrappers/exchange_wrapper.ts
index d02a6e642..b3a35d5bf 100644
--- a/src/contract_wrappers/exchange_wrapper.ts
+++ b/src/contract_wrappers/exchange_wrapper.ts
@@ -30,6 +30,7 @@ import {
     MethodOpts,
     ValidateOrderFillableOpts,
     OrderTransactionOpts,
+    RawLog,
 } from '../types';
 import {assert} from '../utils/assert';
 import {utils} from '../utils/utils';
@@ -39,6 +40,7 @@ import {ContractWrapper} from './contract_wrapper';
 import {constants} from '../utils/constants';
 import {TokenWrapper} from './token_wrapper';
 import {decorators} from '../utils/decorators';
+import {AbiDecoder} from '../utils/abi_decoder';
 import {artifacts} from '../artifacts';
 
 const SHOULD_VALIDATE_BY_DEFAULT = true;
@@ -79,8 +81,9 @@ export class ExchangeWrapper extends ContractWrapper {
         ];
         return [orderAddresses, orderValues];
     }
-    constructor(web3Wrapper: Web3Wrapper, tokenWrapper: TokenWrapper, contractAddressIfExists?: string) {
-        super(web3Wrapper);
+    constructor(web3Wrapper: Web3Wrapper, abiDecoder: AbiDecoder,
+                tokenWrapper: TokenWrapper, contractAddressIfExists?: string) {
+        super(web3Wrapper, abiDecoder);
         this._tokenWrapper = tokenWrapper;
         this._orderValidationUtils = new OrderValidationUtils(tokenWrapper, this);
         this._exchangeLogEventEmitters = [];
@@ -656,6 +659,22 @@ export class ExchangeWrapper extends ContractWrapper {
         return eventEmitter;
     }
     /**
+     * Gets historical logs without creating a subscription
+     * @param   eventName           The exchange contract event you would like to subscribe to.
+     * @param   subscriptionOpts    Subscriptions options that let you configure the subscription.
+     * @param   indexFilterValues   An object where the keys are indexed args returned by the event and
+     *                              the value is the value you are interested in. E.g `{_from: aUserAddressHex}`
+     * @return  Array of logs that match the parameters
+     */
+    public async getLogsAsync(eventName: ExchangeEvents, subscriptionOpts: SubscriptionOpts,
+                              indexFilterValues: IndexedFilterValues): Promise<LogWithDecodedArgs[]> {
+        const exchangeContractAddress = await this.getContractAddressAsync();
+        const logs = await this._getLogsAsync(
+            exchangeContractAddress, eventName, subscriptionOpts, indexFilterValues, artifacts.ExchangeArtifact.abi,
+        );
+        return logs;
+    }
+    /**
      * Stops watching for all exchange events
      */
     public async stopWatchingAllEventsAsync(): Promise<void> {