1 files changed, 51 insertions, 0 deletions
diff --git a/certService/src/main/java/org/onap/aaf/certservice/cmpv2client/impl/CmpMessageBuilder.java b/certService/src/main/java/org/onap/aaf/certservice/cmpv2client/impl/CmpMessageBuilder.java
new file mode 100644
index 00000000..ee8129c6
--- /dev/null
+++ b/certService/src/main/java/org/onap/aaf/certservice/cmpv2client/impl/CmpMessageBuilder.java
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2020 Ericsson Software Technology AB. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License
+ */
+
+package org.onap.aaf.certservice.cmpv2client.impl;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.function.BiConsumer;
+import java.util.function.Consumer;
+import java.util.function.Supplier;
+
+/** Generic Builder Class for creating CMP Message. */
+public class CmpMessageBuilder<T> {
+
+  private final Supplier<T> instantiator;
+  private final List<Consumer<T>> instanceModifiers = new ArrayList<>();
+
+  public CmpMessageBuilder(Supplier<T> instantiator) {
+    this.instantiator = instantiator;
+  }
+
+  public static <T> CmpMessageBuilder<T> of(Supplier<T> instantiator) {
+    return new CmpMessageBuilder<>(instantiator);
+  }
+
+  public <U> CmpMessageBuilder<T> with(BiConsumer<T, U> consumer, U value) {
+    Consumer<T> c = instance -> consumer.accept(instance, value);
+    instanceModifiers.add(c);
+    return this;
+  }
+
+  public T build() {
+    T value = instantiator.get();
+    instanceModifiers.forEach(modifier -> modifier.accept(value));
+    instanceModifiers.clear();
+    return value;
+  }
+}