Hub.IsEnabled set to false when Hub disposed

src/Sentry/Internal/Hub.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.Runtime.CompilerServices;
+using System.Threading;
 using System.Threading.Tasks;
 using Sentry.Extensibility;
 using Sentry.Integrations;
@@ -19,7 +20,8 @@ internal class Hub : IHub, IDisposable
 
         internal SentryScopeManager ScopeManager { get; }
 
-        public bool IsEnabled => true;
+        private int _isEnabled = 1;
+        public bool IsEnabled => _isEnabled == 1;
 
         internal Hub(ISentryClient client, SentryOptions options)
         {
@@ -247,6 +249,11 @@ public void Dispose()
         {
             _options.DiagnosticLogger?.LogInfo("Disposing the Hub.");
 
+            if (Interlocked.Exchange(ref _isEnabled, 0) != 1)
+            {
+                return;
+            }
+
             if (_integrations?.Length > 0)
             {
                 foreach (var integration in _integrations)

test/Sentry.Tests/HubTests.cs

@@ -639,5 +639,26 @@ public void CaptureTransaction_AfterTransactionFinishes_ResetsTransactionOnScope
             // Assert
             hub.WithScope(scope => scope.Transaction.Should().BeNull());
         }
+
+        [Theory]
+        [InlineData(1)]
+        [InlineData(2)]
+        public void Dispose_IsEnabled_SetToFalse(int disposeCount)
+        {
+            // Arrange
+            var hub = new Hub(new SentryOptions
+            {
+                Dsn = DsnSamples.ValidDsnWithSecret
+            });
+
+            // Act
+            for (var i = 0; i < disposeCount; i++)
+            {
+                hub.Dispose();
+            }
+
+            // Assert
+            hub.IsEnabled.Should().BeFalse();
+        }
     }
 }