From c6f0d2d33625ec5c81cdab565daa416b05134a4d Mon Sep 17 00:00:00 2001
From: Trask Stalnaker <trask.stalnaker@gmail.com>
Date: Sun, 25 Aug 2019 21:22:28 -0700
Subject: [PATCH] Fix NPE

---
 .../agent/internal/NopThreadContext.java       | 18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/agent/src/main/java/com/microsoft/applicationinsights/agent/internal/NopThreadContext.java b/agent/src/main/java/com/microsoft/applicationinsights/agent/internal/NopThreadContext.java
index 97b415866ac..981b285d0e8 100644
--- a/agent/src/main/java/com/microsoft/applicationinsights/agent/internal/NopThreadContext.java
+++ b/agent/src/main/java/com/microsoft/applicationinsights/agent/internal/NopThreadContext.java
@@ -106,8 +106,7 @@ public Timer startTimer(TimerName timerName) {
 
     @Override
     public AuxThreadContext createAuxThreadContext() {
-        // TODO Auto-generated method stub
-        return null;
+        return NopAuxThreadContext.INSTANCE;
     }
 
     @Override
@@ -186,4 +185,19 @@ public int getCurrentSuppressionKeyId() {
     public void setCurrentSuppressionKeyId(int suppressionKeyId) {
         this.currentSuppressionKeyId = suppressionKeyId;
     }
+
+    private static class NopAuxThreadContext implements AuxThreadContext {
+
+        private static final AuxThreadContext INSTANCE = new NopAuxThreadContext();
+
+        @Override
+        public Span start() {
+            return NopTransactionService.LOCAL_SPAN;
+        }
+
+        @Override
+        public Span startAndMarkAsyncTransactionComplete() {
+            return NopTransactionService.LOCAL_SPAN;
+        }
+    }
 }