Support Supplier<X> in builder setters for types that have a builder.

builder/processor/src/main/java/io/helidon/builder/processor/TypeHandler.java

@@ -232,9 +232,10 @@ void setters(PrototypeProperty.ConfiguredOption configured,
             factorySetter(configured, setters, returnType, blueprintJavadoc, factoryMethod.createTargetType().get());
         }
 
-        // if there is a builder factory method, we create a method with builder consumer
+        // if there is a builder factory method, we create a method with builder consumer of builder, and supplier of type
         if (factoryMethod.builder().isPresent()) {
             factorySetterConsumer(configured, setters, returnType, blueprintJavadoc, factoryMethod.builder().get());
+            factorySetterSupplier(configured, setters, returnType, blueprintJavadoc, factoryMethod.builder().get());
         }
     }
 
@@ -312,6 +313,47 @@ private void declaredSetter(PrototypeProperty.ConfiguredOption configured,
         ));
     }
 
+    private void factorySetterSupplier(PrototypeProperty.ConfiguredOption configured,
+                                       List<GeneratedMethod> setters,
+                                       TypeName returnType,
+                                       Javadoc blueprintJavadoc,
+                                       FactoryMethods.FactoryMethod factoryMethod) {
+        TypeName supplierType = actualType();
+        if (!supplierType.wildcard()) {
+            supplierType = TypeName.builder(supplierType)
+                    .wildcard(true)
+                    .build();
+        }
+        supplierType = TypeName.builder(TypeNames.SUPPLIER)
+                .addTypeArgument(supplierType)
+                .build();
+
+        String argumentName = "supplier";
+
+        List<String> paramLines = new ArrayList<>();
+        paramLines.add("supplier of");
+        paramLines.addAll(blueprintJavadoc.returns());
+        Javadoc javadoc = new Javadoc(blueprintJavadoc.lines(),
+                                      List.of(new Javadoc.Tag(argumentName, paramLines)),
+                                      List.of("updated builder instance"),
+                                      List.of(new Javadoc.Tag("see", List.of("#" + getterName() + "()"))));
+
+        List<String> lines = new ArrayList<>();
+        lines.add("Objects.requireNonNull(" + argumentName + ");");
+        lines.add("this." + name() + "(" + argumentName + ".get());");
+        lines.add("return self();");
+
+        setters.add(new GeneratedMethod(
+                Set.of(setterModifier(configured).trim()),
+                setterName(),
+                returnType,
+                List.of(new GeneratedMethod.Argument(argumentName, supplierType)),
+                List.of(),
+                javadoc,
+                lines
+        ));
+    }
+
     private void factorySetterConsumer(PrototypeProperty.ConfiguredOption configured,
                                        List<GeneratedMethod> setters,
                                        TypeName returnType,

common/types/src/main/java/io/helidon/common/types/Annotation.java

@@ -203,6 +203,20 @@ public BUILDER typeName(java.util.function.Consumer<TypeName.Builder> consumer)
             return self();
         }
 
+        /**
+         * The type name, e.g., {@link java.util.Objects} -> "java.util.Objects".
+         *
+         * @param supplier supplier of
+         * the annotation type name
+         * @return updated builder instance
+         * @see #typeName()
+         */
+        public BUILDER typeName(java.util.function.Supplier<? extends TypeName> supplier) {
+            Objects.requireNonNull(supplier);
+            this.typeName(supplier.get());
+            return self();
+        }
+
         /**
          * Get a key-value of all the annotation properties.
          *

common/types/src/main/java/io/helidon/common/types/TypeInfo.java

@@ -162,6 +162,20 @@ public BUILDER typeName(java.util.function.Consumer<TypeName.Builder> consumer)
             return self();
         }
 
+        /**
+         * The type name.
+         *
+         * @param supplier supplier of
+         * the type name
+         * @return updated builder instance
+         * @see #typeName()
+         */
+        public BUILDER typeName(java.util.function.Supplier<? extends TypeName> supplier) {
+            Objects.requireNonNull(supplier);
+            this.typeName(supplier.get());
+            return self();
+        }
+
         /**
          * Any Map, List, Set, or method that has {@link TypeName#typeArguments()} will be analyzed and any
          * type arguments will have

common/types/src/main/java/io/helidon/common/types/TypeNames.java

@@ -21,6 +21,7 @@
 import java.util.Map;
 import java.util.Optional;
 import java.util.Set;
+import java.util.function.Supplier;
 
 /**
  * Commonly used type names.
@@ -50,6 +51,10 @@ public final class TypeNames {
      * Type name for {@link java.util.Optional}.
      */
     public static final TypeName OPTIONAL = TypeName.create(Optional.class);
+    /**
+     * Type name for {@link java.util.function.Supplier}.
+     */
+    public static final TypeName SUPPLIER = TypeName.create(Supplier.class);
     /**
      * Type name for {@link java.util.Collection}.
      */

common/types/src/main/java/io/helidon/common/types/TypedElementInfo.java

@@ -193,6 +193,21 @@ public BUILDER typeName(java.util.function.Consumer<TypeName.Builder> consumer)
             return self();
         }
 
+        /**
+         * The type name for the element (e.g., java.util.List). If the element is a method, then this is the return type of
+         * the method.
+         *
+         * @param supplier supplier of
+         * the type name of the element
+         * @return updated builder instance
+         * @see #typeName()
+         */
+        public BUILDER typeName(java.util.function.Supplier<? extends TypeName> supplier) {
+            Objects.requireNonNull(supplier);
+            this.typeName(supplier.get());
+            return self();
+        }
+
         /**
          * The element (e.g., method, field, etc) name.
          *

inject/runtime/src/test/java/io/helidon/inject/runtime/InvocationTest.java

@@ -57,8 +57,7 @@ class InvocationTest {
             .elementInfo(TypedElementInfo.builder()
                                  .elementName("test")
                                  .elementTypeKind(TypeValues.KIND_METHOD)
-                                 .typeName(TypeName.create(InvocationTest.class))
-                                 .build())
+                                 .typeName(TypeName.create(InvocationTest.class)))
             .interceptors(List.of(first.provider, second.provider))
             .build();
     ArrayList<Object[]> calls = new ArrayList<>();

nima/http2/webclient/src/main/java/io/helidon/nima/http2/webclient/Http2ClientConnectionHandler.java

@@ -18,10 +18,12 @@
 
 import java.util.Base64;
 import java.util.Collections;
+import java.util.HashSet;
 import java.util.IdentityHashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
+import java.util.Set;
 import java.util.concurrent.atomic.AtomicReference;
 import java.util.concurrent.locks.ReentrantLock;
 import java.util.function.Function;
@@ -69,8 +71,9 @@ class Http2ClientConnectionHandler {
     }
 
     void close() {
-        this.allConnections.keySet()
-                .forEach(Http2ClientConnection::close);
+        // this is to prevent concurrent modification (connections remove themself from the map)
+        Set<Http2ClientConnection> toClose = new HashSet<>(allConnections.keySet());
+        toClose.forEach(Http2ClientConnection::close);
         this.activeConnection.set(null);
         this.allConnections.clear();
     }