De-register smallrye context manager on shutdown

Fixes #18864

(cherry picked from commit 78e5635)

Author: stuartwdouglas

extensions/smallrye-context-propagation/deployment/src/main/java/io/quarkus/smallrye/context/deployment/SmallRyeContextPropagationProcessor.java

@@ -19,6 +19,7 @@
 import io.quarkus.deployment.annotations.Record;
 import io.quarkus.deployment.builditem.ExecutorBuildItem;
 import io.quarkus.deployment.builditem.FeatureBuildItem;
+import io.quarkus.deployment.builditem.ShutdownContextBuildItem;
 import io.quarkus.deployment.util.ServiceUtil;
 import io.quarkus.smallrye.context.runtime.SmallRyeContextPropagationProvider;
 import io.quarkus.smallrye.context.runtime.SmallRyeContextPropagationRecorder;
@@ -67,11 +68,12 @@ void buildStatic(SmallRyeContextPropagationRecorder recorder)
     @Record(ExecutionTime.RUNTIME_INIT)
     void build(SmallRyeContextPropagationRecorder recorder,
             ExecutorBuildItem executorBuildItem,
+            ShutdownContextBuildItem shutdownContextBuildItem,
             BuildProducer<FeatureBuildItem> feature,
             BuildProducer<SyntheticBeanBuildItem> syntheticBeans) {
         feature.produce(new FeatureBuildItem(Feature.SMALLRYE_CONTEXT_PROPAGATION));
 
-        recorder.configureRuntime(executorBuildItem.getExecutorProxy());
+        recorder.configureRuntime(executorBuildItem.getExecutorProxy(), shutdownContextBuildItem);
 
         // Synthetic bean for ManagedExecutor
         syntheticBeans.produce(

extensions/smallrye-context-propagation/runtime/src/main/java/io/quarkus/smallrye/context/runtime/SmallRyeContextPropagationRecorder.java

@@ -10,6 +10,7 @@
 import org.eclipse.microprofile.context.spi.ThreadContextProvider;
 
 import io.quarkus.arc.Arc;
+import io.quarkus.runtime.ShutdownContext;
 import io.quarkus.runtime.annotations.Recorder;
 import io.smallrye.context.SmallRyeContextManager;
 import io.smallrye.context.SmallRyeContextManagerProvider;
@@ -40,7 +41,7 @@ public void configureStaticInit(List<ThreadContextProvider> discoveredProviders,
         builder.withContextManagerExtensions(discoveredExtensions.toArray(new ContextManagerExtension[0]));
     }
 
-    public void configureRuntime(ExecutorService executorService) {
+    public void configureRuntime(ExecutorService executorService, ShutdownContext shutdownContext) {
         // associate the static init manager to the runtime CL
         ContextManagerProvider contextManagerProvider = ContextManagerProvider.instance();
         // finish building our manager
@@ -49,6 +50,12 @@ public void configureRuntime(ExecutorService executorService) {
         SmallRyeContextManager contextManager = builder.build();
 
         contextManagerProvider.registerContextManager(contextManager, Thread.currentThread().getContextClassLoader());
+        shutdownContext.addShutdownTask(new Runnable() {
+            @Override
+            public void run() {
+                contextManagerProvider.releaseContextManager(contextManager);
+            }
+        });
     }
 
     public Supplier<Object> initializeManagedExecutor(ExecutorService executorService) {