From 226b02a3e2b3619cbe967634ccd6ac7b5d450147 Mon Sep 17 00:00:00 2001
From: =?utf8?q?J=C3=A9r=C3=B4me=20Benoit?= <jerome.benoit@piment-noir.org>
Date: Fri, 1 Sep 2023 01:16:57 +0200
Subject: [PATCH] fix: avoid out of bound at worker node removal
MIME-Version: 1.0
Content-Type: text/plain; charset=utf8
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Signed-off-by: Jérôme Benoit <jerome.benoit@piment-noir.org>
---
 ...hted-round-robin-worker-choice-strategy.ts | 26 ++++++++++---------
 .../round-robin-worker-choice-strategy.ts     | 20 +++++++++-----
 ...hted-round-robin-worker-choice-strategy.ts | 14 ++++++----
 3 files changed, 37 insertions(+), 23 deletions(-)

diff --git a/src/pools/selection-strategies/interleaved-weighted-round-robin-worker-choice-strategy.ts b/src/pools/selection-strategies/interleaved-weighted-round-robin-worker-choice-strategy.ts
index 0b32bd45..7fba0f1b 100644
--- a/src/pools/selection-strategies/interleaved-weighted-round-robin-worker-choice-strategy.ts
+++ b/src/pools/selection-strategies/interleaved-weighted-round-robin-worker-choice-strategy.ts
@@ -137,18 +137,20 @@ export class InterleavedWeightedRoundRobinWorkerChoiceStrategy<
 
   /** @inheritDoc */
   public remove (workerNodeKey: number): boolean {
-    if (this.nextWorkerNodeKey === workerNodeKey) {
-      if (this.pool.workerNodes.length === 0) {
-        this.roundId = 0
-        this.workerNodeId = 0
-        this.nextWorkerNodeKey = 0
-      } else if (this.nextWorkerNodeKey > this.pool.workerNodes.length - 1) {
-        if (this.workerNodeId === this.nextWorkerNodeKey) {
-          this.workerNodeId = this.pool.workerNodes.length - 1
-        }
-        this.nextWorkerNodeKey = this.pool.workerNodes.length - 1
-      }
-      this.workerVirtualTaskRunTime = 0
+    if (this.pool.workerNodes.length === 0) {
+      this.reset()
+    }
+    if (
+      this.workerNodeId === workerNodeKey &&
+      this.workerNodeId > this.pool.workerNodes.length - 1
+    ) {
+      this.workerNodeId = this.pool.workerNodes.length - 1
+    }
+    if (
+      this.previousWorkerNodeKey === workerNodeKey &&
+      this.previousWorkerNodeKey > this.pool.workerNodes.length - 1
+    ) {
+      this.previousWorkerNodeKey = this.pool.workerNodes.length - 1
     }
     return true
   }
diff --git a/src/pools/selection-strategies/round-robin-worker-choice-strategy.ts b/src/pools/selection-strategies/round-robin-worker-choice-strategy.ts
index 6884a5d2..aa3ee108 100644
--- a/src/pools/selection-strategies/round-robin-worker-choice-strategy.ts
+++ b/src/pools/selection-strategies/round-robin-worker-choice-strategy.ts
@@ -51,12 +51,20 @@ export class RoundRobinWorkerChoiceStrategy<
 
   /** @inheritDoc */
   public remove (workerNodeKey: number): boolean {
-    if (this.nextWorkerNodeKey === workerNodeKey) {
-      if (this.pool.workerNodes.length === 0) {
-        this.nextWorkerNodeKey = 0
-      } else if (this.nextWorkerNodeKey > this.pool.workerNodes.length - 1) {
-        this.nextWorkerNodeKey = this.pool.workerNodes.length - 1
-      }
+    if (this.pool.workerNodes.length === 0) {
+      this.reset()
+    }
+    if (
+      this.nextWorkerNodeKey === workerNodeKey &&
+      this.nextWorkerNodeKey > this.pool.workerNodes.length - 1
+    ) {
+      this.nextWorkerNodeKey = this.pool.workerNodes.length - 1
+    }
+    if (
+      this.previousWorkerNodeKey === workerNodeKey &&
+      this.previousWorkerNodeKey > this.pool.workerNodes.length - 1
+    ) {
+      this.previousWorkerNodeKey = this.pool.workerNodes.length - 1
     }
     return true
   }
diff --git a/src/pools/selection-strategies/weighted-round-robin-worker-choice-strategy.ts b/src/pools/selection-strategies/weighted-round-robin-worker-choice-strategy.ts
index 42952fa2..c87081a6 100644
--- a/src/pools/selection-strategies/weighted-round-robin-worker-choice-strategy.ts
+++ b/src/pools/selection-strategies/weighted-round-robin-worker-choice-strategy.ts
@@ -76,14 +76,18 @@ export class WeightedRoundRobinWorkerChoiceStrategy<
 
   /** @inheritDoc */
   public remove (workerNodeKey: number): boolean {
+    if (this.pool.workerNodes.length === 0) {
+      this.reset()
+    }
     if (this.nextWorkerNodeKey === workerNodeKey) {
-      if (this.pool.workerNodes.length === 0) {
-        this.nextWorkerNodeKey = 0
-      } else if (this.nextWorkerNodeKey > this.pool.workerNodes.length - 1) {
-        this.nextWorkerNodeKey = this.pool.workerNodes.length - 1
-      }
       this.workerVirtualTaskRunTime = 0
     }
+    if (
+      this.previousWorkerNodeKey === workerNodeKey &&
+      this.previousWorkerNodeKey > this.pool.workerNodes.length - 1
+    ) {
+      this.previousWorkerNodeKey = this.pool.workerNodes.length - 1
+    }
     return true
   }
 
-- 
2.34.1