1 files changed, 58 insertions, 0 deletions
diff --git a/tools/archetype/src/main/resources/archetype-resources/__rootArtifactId__-impl/src/main/java/init/ConfigDataInitializer.java b/tools/archetype/src/main/resources/archetype-resources/__rootArtifactId__-impl/src/main/java/init/ConfigDataInitializer.java
new file mode 100644
index 000000000..2393a125a
--- /dev/null
+++ b/tools/archetype/src/main/resources/archetype-resources/__rootArtifactId__-impl/src/main/java/init/ConfigDataInitializer.java
@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ *
+ * 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.
+ */
+
+#macro( ccase $str )
+#foreach( $word in $rootArtifactId.split('-') )$word.substring(0,1).toUpperCase()$word.substring(1)#end
+#end
+#set( $classNamePrefix = "#ccase( $rootArtifactId )" )
+#macro( dotted $str )
+#foreach( $word in $rootArtifactId.split('-') )$word.#end
+#end
+#set( $packageName = "#dotted( $rootArtifactId )" )
+package ${package}.init;
+
+import io.fd.honeycomb.data.init.AbstractDataTreeConverter;
+import com.google.inject.Inject;
+import com.google.inject.name.Named;
+import javax.annotation.Nonnull;
+import org.opendaylight.controller.md.sal.binding.api.DataBroker;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.${packageName}rev160918.${classNamePrefix};
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.${packageName}rev160918.${classNamePrefix}Builder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.${packageName}rev160918.${classNamePrefix}State;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+
+/**
+ * Initialize configuration data based on operational data.
+ * <p/>
+ * Very useful when a plugin is initiated but the underlying layer already contains some operation state.
+ * Deriving the configuration from existing operational state enables reconciliation in case when Honeycomb's persistence
+ * is not available to do the work for us.
+ */
+public final class ConfigDataInitializer extends AbstractDataTreeConverter<${classNamePrefix}State, ${classNamePrefix}> {
+
+    @Inject
+    public ConfigDataInitializer(@Named("honeycomb-initializer") @Nonnull final DataBroker bindingDataBroker) {
+        super(bindingDataBroker, InstanceIdentifier.create(${classNamePrefix}State.class), InstanceIdentifier.create(${classNamePrefix}.class));
+    }
+
+    @Override
+    public ${classNamePrefix} convert(final ${classNamePrefix}State operationalData) {
+        // Transfer all the operational data into configuration
+        return new ${classNamePrefix}Builder()
+                .setElement(operationalData.getElement())
+                .build();
+    }
+}