Merge branch 'v2-prototype' into feature/order-watcher-v2

5 files changed, 12 insertions, 26 deletions

diff --git a/packages/order-watcher/src/order_watcher/event_watcher.ts b/packages/order-watcher/src/order_watcher/event_watcher.ts
index 68c043dfe..9509c75de 100644
--- a/packages/order-watcher/src/order_watcher/event_watcher.ts
+++ b/packages/order-watcher/src/order_watcher/event_watcher.ts
@@ -20,17 +20,17 @@ enum LogEventState {
  */
 export class EventWatcher {
     private readonly _web3Wrapper: Web3Wrapper;
-    private readonly _pollingIntervalMs: number;
     private readonly _stateLayer: BlockParamLiteral;
     private readonly _isVerbose: boolean;
     private _blockAndLogStreamerIfExists: BlockAndLogStreamer<Block, Log> | undefined;
     private _blockAndLogStreamIntervalIfExists?: NodeJS.Timer;
     private _onLogAddedSubscriptionToken: string | undefined;
     private _onLogRemovedSubscriptionToken: string | undefined;
+    private readonly _pollingIntervalMs: number;
     constructor(
         provider: Provider,
         pollingIntervalIfExistsMs: undefined | number,
-        stateLayer: BlockParamLiteral = BlockParamLiteral.Latest,
+        stateLayer: BlockParamLiteral,
         isVerbose: boolean,
     ) {
         this._isVerbose = isVerbose;
@@ -61,13 +61,9 @@ export class EventWatcher {
         if (!_.isUndefined(this._blockAndLogStreamerIfExists)) {
             throw new Error(OrderWatcherError.SubscriptionAlreadyPresent);
         }
-        const eventFilter = {
-            fromBlock: this._stateLayer,
-            toBlock: this._stateLayer,
-        };
         this._blockAndLogStreamerIfExists = new BlockAndLogStreamer(
-            this._web3Wrapper.getBlockAsync.bind(this._web3Wrapper, this._stateLayer),
-            this._web3Wrapper.getLogsAsync.bind(this._web3Wrapper, eventFilter),
+            this._web3Wrapper.getBlockAsync.bind(this._web3Wrapper),
+            this._web3Wrapper.getLogsAsync.bind(this._web3Wrapper),
             this._onBlockAndLogStreamerError.bind(this),
         );
         const catchAllLogFilter = {};
@@ -104,7 +100,7 @@ export class EventWatcher {
         await this._emitDifferencesAsync(log, isRemoved ? LogEventState.Removed : LogEventState.Added, callback);
     }
     private async _reconcileBlockAsync(): Promise<void> {
-        const latestBlock = await this._web3Wrapper.getBlockAsync(BlockParamLiteral.Latest);
+        const latestBlock = await this._web3Wrapper.getBlockAsync(this._stateLayer);
         // We need to coerce to Block type cause Web3.Block includes types for mempool blocks
         if (!_.isUndefined(this._blockAndLogStreamerIfExists)) {
             // If we clear the interval while fetching the block - this._blockAndLogStreamer will be undefined
diff --git a/packages/order-watcher/src/order_watcher/expiration_watcher.ts b/packages/order-watcher/src/order_watcher/expiration_watcher.ts
index c4c94a015..6eadf14c7 100644
--- a/packages/order-watcher/src/order_watcher/expiration_watcher.ts
+++ b/packages/order-watcher/src/order_watcher/expiration_watcher.ts
@@ -44,7 +44,7 @@ export class ExpirationWatcher {
         this._orderExpirationCheckingIntervalIdIfExists = intervalUtils.setInterval(
             this._pruneExpiredOrders.bind(this, callback),
             this._orderExpirationCheckingIntervalMs,
-            _.noop, // _pruneExpiredOrders never throws
+            _.noop.bind(_), // _pruneExpiredOrders never throws
         );
     }
     public unsubscribe(): void {
diff --git a/packages/order-watcher/src/order_watcher/order_watcher.ts b/packages/order-watcher/src/order_watcher/order_watcher.ts
index af479f32d..0ad3267d8 100644
--- a/packages/order-watcher/src/order_watcher/order_watcher.ts
+++ b/packages/order-watcher/src/order_watcher/order_watcher.ts
@@ -58,7 +58,6 @@ interface OrderStateByOrderHash {
 }
 
 const DEFAULT_ORDER_WATCHER_CONFIG: OrderWatcherConfig = {
-    stateLayer: BlockParamLiteral.Latest,
     orderExpirationCheckingIntervalMs: 50,
     eventPollingIntervalMs: 200,
     expirationMarginMs: 0,
@@ -66,6 +65,7 @@ const DEFAULT_ORDER_WATCHER_CONFIG: OrderWatcherConfig = {
     cleanupJobIntervalMs: 1000 * 60 * 60, // 1h
     isVerbose: true,
 };
+const STATE_LAYER = BlockParamLiteral.Latest;
 
 /**
  * This class includes all the functionality related to watching a set of orders
@@ -107,24 +107,16 @@ export class OrderWatcher {
             [artifacts.EtherToken.abi, artifacts.Exchange.abi],
         );
         const contractWrappers = new ContractWrappers(provider, { networkId });
-        this._eventWatcher = new EventWatcher(
-            provider,
-            config.eventPollingIntervalMs,
-            config.stateLayer,
-            config.isVerbose,
-        );
+        this._eventWatcher = new EventWatcher(provider, config.eventPollingIntervalMs, STATE_LAYER, config.isVerbose);
         const balanceAndProxyAllowanceFetcher = new AssetBalanceAndProxyAllowanceFetcher(
             contractWrappers.erc20Token,
             contractWrappers.erc721Token,
-            config.stateLayer,
+            STATE_LAYER,
         );
         this._balanceAndProxyAllowanceLazyStore = new BalanceAndProxyAllowanceLazyStore(
             balanceAndProxyAllowanceFetcher,
         );
-        const orderFilledCancelledFetcher = new OrderFilledCancelledFetcher(
-            contractWrappers.exchange,
-            config.stateLayer,
-        );
+        const orderFilledCancelledFetcher = new OrderFilledCancelledFetcher(contractWrappers.exchange, STATE_LAYER);
         this._orderFilledCancelledLazyStore = new OrderFilledCancelledLazyStore(orderFilledCancelledFetcher);
         this._orderStateUtils = new OrderStateUtils(balanceAndProxyAllowanceFetcher, orderFilledCancelledFetcher);
         const expirationMarginIfExistsMs = _.isUndefined(config) ? undefined : config.expirationMarginMs;
diff --git a/packages/order-watcher/src/types.ts b/packages/order-watcher/src/types.ts
index 7991df58c..27d892985 100644
--- a/packages/order-watcher/src/types.ts
+++ b/packages/order-watcher/src/types.ts
@@ -1,5 +1,5 @@
 import { OrderState } from '@0xproject/types';
-import { BlockParamLiteral, LogEntryEvent } from 'ethereum-types';
+import { LogEntryEvent } from 'ethereum-types';
 
 export enum OrderWatcherError {
     SubscriptionAlreadyPresent = 'SUBSCRIPTION_ALREADY_PRESENT',
@@ -9,7 +9,6 @@ export enum OrderWatcherError {
 export type EventWatcherCallback = (err: null | Error, log?: LogEntryEvent) => void;
 
 /**
- * stateLayer: Optional blockchain state layer OrderWatcher will monitor for new events. Default=latest.
  * orderExpirationCheckingIntervalMs: How often to check for expired orders. Default=50.
  * eventPollingIntervalMs: How often to poll the Ethereum node for new events. Default=200.
  * expirationMarginMs: Amount of time before order expiry that you'd like to be notified
@@ -18,7 +17,6 @@ export type EventWatcherCallback = (err: null | Error, log?: LogEntryEvent) => v
  * isVerbose: Weather the order watcher should be verbose. Default=true.
  */
 export interface OrderWatcherConfig {
-    stateLayer: BlockParamLiteral;
     orderExpirationCheckingIntervalMs: number;
     eventPollingIntervalMs: number;
     expirationMarginMs: number;
diff --git a/packages/order-watcher/src/utils/assert.ts b/packages/order-watcher/src/utils/assert.ts
index fa22617c7..a891a60d2 100644
--- a/packages/order-watcher/src/utils/assert.ts
+++ b/packages/order-watcher/src/utils/assert.ts
@@ -18,6 +18,6 @@ export const assert = {
         signerAddress: string,
     ): Promise<void> {
         const isValid = await isValidSignatureAsync(provider, orderHash, signature, signerAddress);
-        this.assert(isValid, `Expected order with hash '${orderHash}' to have a valid signature`);
+        assert.assert(isValid, `Expected order with hash '${orderHash}' to have a valid signature`);
     },
 };