From 1e787a764615bd3df839f2cb117b711be297b9d5 Mon Sep 17 00:00:00 2001
From: Fabio Berger <me@fabioberger.com>
Date: Tue, 17 Jul 2018 12:04:29 +0200
Subject: Remove stateLayer OrderWatcher config and instead temporarily
 hard-code until we get pending block to work with Blockstream

---
 packages/0x.js/CHANGELOG.json                             | 4 ++++
 packages/order-watcher/CHANGELOG.json                     | 4 ++++
 packages/order-watcher/src/order_watcher/event_watcher.ts | 2 +-
 packages/order-watcher/src/order_watcher/order_watcher.ts | 9 ++++-----
 packages/order-watcher/src/types.ts                       | 2 --
 5 files changed, 13 insertions(+), 8 deletions(-)

diff --git a/packages/0x.js/CHANGELOG.json b/packages/0x.js/CHANGELOG.json
index 3ec09cd7e..9419311dd 100644
--- a/packages/0x.js/CHANGELOG.json
+++ b/packages/0x.js/CHANGELOG.json
@@ -32,6 +32,10 @@
             {
                 "note": "0x.js exports renamed contract events and event arg types",
                 "pr": 863
+            },
+            {
+                "note": "Remove stateLayer config from OrderWatcher. It now always operates on the latest block",
+                "pr": 875
             }
         ]
     },
diff --git a/packages/order-watcher/CHANGELOG.json b/packages/order-watcher/CHANGELOG.json
index d80231dae..e747a2129 100644
--- a/packages/order-watcher/CHANGELOG.json
+++ b/packages/order-watcher/CHANGELOG.json
@@ -13,6 +13,10 @@
             {
                 "note": "Fixed a bug that caused the incorrect block to be fetched via JSON-RPC within Blockstream",
                 "pr": 875
+            },
+            {
+                "note": "Remove stateLayer config from OrderWatcher. It now always operates on the latest block",
+                "pr": 875
             }
         ],
         "timestamp": 1531149657
diff --git a/packages/order-watcher/src/order_watcher/event_watcher.ts b/packages/order-watcher/src/order_watcher/event_watcher.ts
index 1cd198a62..60a3c6297 100644
--- a/packages/order-watcher/src/order_watcher/event_watcher.ts
+++ b/packages/order-watcher/src/order_watcher/event_watcher.ts
@@ -30,7 +30,7 @@ export class EventWatcher {
     constructor(
         web3Wrapper: Web3Wrapper,
         pollingIntervalIfExistsMs: undefined | number,
-        stateLayer: BlockParamLiteral = BlockParamLiteral.Latest,
+        stateLayer: BlockParamLiteral,
         isVerbose: boolean,
     ) {
         this._isVerbose = isVerbose;
diff --git a/packages/order-watcher/src/order_watcher/order_watcher.ts b/packages/order-watcher/src/order_watcher/order_watcher.ts
index b09ba8d9d..95671684f 100644
--- a/packages/order-watcher/src/order_watcher/order_watcher.ts
+++ b/packages/order-watcher/src/order_watcher/order_watcher.ts
@@ -61,6 +61,7 @@ interface OrderStateByOrderHash {
 
 // tslint:disable-next-line:custom-no-magic-numbers
 const DEFAULT_CLEANUP_JOB_INTERVAL_MS = 1000 * 60 * 60; // 1h
+const STATE_LAYER = BlockParamLiteral.Latest;
 
 /**
  * This class includes all the functionality related to watching a set of orders
@@ -91,17 +92,15 @@ export class OrderWatcher {
         });
         this._contractWrappers = new ContractWrappers(provider, { networkId });
         const pollingIntervalIfExistsMs = _.isUndefined(config) ? undefined : config.eventPollingIntervalMs;
-        const stateLayer =
-            _.isUndefined(config) || _.isUndefined(config.stateLayer) ? BlockParamLiteral.Latest : config.stateLayer;
         const isVerbose = !_.isUndefined(config) && !_.isUndefined(config.isVerbose) ? config.isVerbose : false;
-        this._eventWatcher = new EventWatcher(this._web3Wrapper, pollingIntervalIfExistsMs, stateLayer, isVerbose);
+        this._eventWatcher = new EventWatcher(this._web3Wrapper, pollingIntervalIfExistsMs, STATE_LAYER, isVerbose);
         this._balanceAndProxyAllowanceLazyStore = new BalanceAndProxyAllowanceLazyStore(
             this._contractWrappers.token,
-            stateLayer,
+            STATE_LAYER,
         );
         this._orderFilledCancelledLazyStore = new OrderFilledCancelledLazyStore(
             this._contractWrappers.exchange,
-            stateLayer,
+            STATE_LAYER,
         );
         this._orderStateUtils = new OrderStateUtils(
             this._balanceAndProxyAllowanceLazyStore,
diff --git a/packages/order-watcher/src/types.ts b/packages/order-watcher/src/types.ts
index 63e4e7848..f8ec91a51 100644
--- a/packages/order-watcher/src/types.ts
+++ b/packages/order-watcher/src/types.ts
@@ -13,10 +13,8 @@ export type EventWatcherCallback = (err: null | Error, log?: LogEntryEvent) => v
  * expirationMarginMs: Amount of time before order expiry that you'd like to be notified
  * of an orders expiration. Default=0.
  * cleanupJobIntervalMs: How often to run a cleanup job which revalidates all the orders. Default=1hr.
- * stateLayer: Optional blockchain state layer OrderWatcher will monitor for new events. Default=latest.
  */
 export interface OrderWatcherConfig {
-    stateLayer: BlockParamLiteral;
     orderExpirationCheckingIntervalMs?: number;
     eventPollingIntervalMs?: number;
     expirationMarginMs?: number;
-- 
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