Fix issues with after migration to Helidon 4

Author: Ryan Lubke

k8s/optional/original-front-end.yaml

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2020,2022 Oracle and/or its affiliates.
+# Copyright (c) 2020, 2025 Oracle and/or its affiliates.
 #
 # Licensed under the Universal Permissive License v 1.0 as shown at
 # https://oss.oracle.com/licenses/upl.
@@ -40,10 +40,10 @@ spec:
         resources:
           requests:
             cpu: 100m
-            memory: 200Mi
+            memory: 400Mi
           limits:
             cpu: 1000m
-            memory: 200Mi
+            memory: 400Mi
         ports:
         - containerPort: 8079
         securityContext:

orders/src/main/java/com/oracle/coherence/examples/sockshop/helidon/orders/JsonbMarshaller.java

@@ -0,0 +1,73 @@
+/*
+ * Copyright (c) 2025, Oracle and/or its affiliates.
+ *
+ * Licensed under the Universal Permissive License v 1.0 as shown at
+ * https://oss.oracle.com/licenses/upl.
+ */
+
+package com.oracle.coherence.examples.sockshop.helidon.orders;
+
+import io.grpc.MethodDescriptor;
+import io.helidon.grpc.api.Grpc;
+import io.helidon.grpc.core.MarshallerSupplier;
+import jakarta.enterprise.context.Dependent;
+import jakarta.inject.Named;
+import jakarta.json.bind.Jsonb;
+import jakarta.json.bind.JsonbBuilder;
+import java.io.ByteArrayInputStream;
+import java.io.InputStream;
+import java.nio.charset.StandardCharsets;
+
+/**
+ * An implementation of a gRPC {@link MethodDescriptor.Marshaller} that
+ * uses JSONB for serialization.
+ *
+ * @param <T> the type of value to be marshalled
+ */
+@Grpc.GrpcMarshaller
+public class JsonbMarshaller<T>
+        implements MethodDescriptor.Marshaller<T>
+    {
+
+    private static final Jsonb JSONB = JsonbBuilder.create();
+
+    private final Class<T> clazz;
+
+    /**
+     * Construct {@code JsonbMarshaller} instance.
+     *
+     * @param clazz the type of object to marshall
+     */
+    JsonbMarshaller(Class<T> clazz)
+        {
+        this.clazz = clazz;
+        }
+
+    @Override
+    public InputStream stream(T obj)
+        {
+        return new ByteArrayInputStream(JSONB.toJson(obj).getBytes(StandardCharsets.UTF_8));
+        }
+
+    @Override
+    public T parse(InputStream in)
+        {
+        return JSONB.fromJson(in, clazz);
+        }
+
+    /**
+     * A {@link MarshallerSupplier} implementation that supplies
+     * instances of {@link JsonbMarshaller}.
+     */
+    @Dependent
+    @Named("jsonb")
+    public static class Supplier
+            implements MarshallerSupplier
+        {
+        @Override
+        public <T> MethodDescriptor.Marshaller<T> get(Class<T> clazz)
+            {
+            return new JsonbMarshaller<>(clazz);
+            }
+        }
+    }

orders/src/main/resources/application.yaml

@@ -1,10 +1,21 @@
 #
-# Copyright (c) 2020, 2023 Oracle and/or its affiliates.
+# Copyright (c) 2020, 2025 Oracle and/or its affiliates.
 #
 # Licensed under the Universal Permissive License v 1.0 as shown at
 # https://oss.oracle.com/licenses/upl.
 #
-
+grpc:
+  client:
+    channels:
+      - name: "default"
+        tls:
+          enabled: "false"
+      - name: "payment"
+        tls:
+          enabled: "false"
+      - name: "shipping"
+        tls:
+          enabled: "false"
 coherence:
   topic:
     enabled: false

payment/src/main/java/com/oracle/coherence/examples/sockshop/helidon/payment/JsonbMarshaller.java

@@ -1,12 +1,13 @@
 /*
- * Copyright (c) 2024, Oracle and/or its affiliates.
+ * Copyright (c) 2024, 2025, Oracle and/or its affiliates.
  *
  * Licensed under the Universal Permissive License v 1.0 as shown at
  * https://oss.oracle.com/licenses/upl.
  */
 
 package com.oracle.coherence.examples.sockshop.helidon.payment;
 
+import io.helidon.grpc.api.Grpc;
 import jakarta.enterprise.context.Dependent;
 import java.io.ByteArrayInputStream;
 import java.io.InputStream;
@@ -28,6 +29,7 @@
  *
  * @param <T> the type of value to be marshalled
  */
+@Grpc.GrpcMarshaller
 public class JsonbMarshaller<T>
         implements MethodDescriptor.Marshaller<T>
     {

shipping/src/main/java/com/oracle/coherence/examples/sockshop/helidon/shipping/JsonbMarshaller.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2024, Oracle and/or its affiliates.
+ * Copyright (c) 2024, 2025, Oracle and/or its affiliates.
  *
  * Licensed under the Universal Permissive License v 1.0 as shown at
  * https://oss.oracle.com/licenses/upl.
@@ -9,6 +9,7 @@
 
 
 import io.grpc.MethodDescriptor;
+import io.helidon.grpc.api.Grpc;
 import io.helidon.grpc.core.MarshallerSupplier;
 import jakarta.enterprise.context.Dependent;
 import jakarta.inject.Named;
@@ -25,6 +26,7 @@
  *
  * @param <T> the type of value to be marshalled
  */
+@Grpc.GrpcMarshaller
 public class JsonbMarshaller<T>
         implements MethodDescriptor.Marshaller<T>
     {