1 files changed, 92 insertions, 0 deletions
diff --git a/mod/genprocessor/src/main/java/org/onap/dcae/genprocessor/DCAEProcessor.java b/mod/genprocessor/src/main/java/org/onap/dcae/genprocessor/DCAEProcessor.java
new file mode 100644
index 0000000..b920b90
--- /dev/null
+++ b/mod/genprocessor/src/main/java/org/onap/dcae/genprocessor/DCAEProcessor.java
@@ -0,0 +1,92 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2019 AT&T Intellectual Property. 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.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.genprocessor;
+
+import java.util.List;
+import java.util.Set;
+
+import org.apache.nifi.components.PropertyDescriptor;
+import org.apache.nifi.processor.AbstractProcessor;
+import org.apache.nifi.processor.ProcessContext;
+import org.apache.nifi.processor.ProcessSession;
+import org.apache.nifi.processor.Relationship;
+import org.apache.nifi.processor.exception.ProcessException;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+
+public abstract class DCAEProcessor extends AbstractProcessor {
+
+    static final Logger LOG = LoggerFactory.getLogger(DCAEProcessor.class);
+
+    // These are properties of the DCAE component that may be useful in the future..
+    abstract public String getName();
+    abstract public String getVersion();
+    abstract public String getComponentId();
+    abstract public String getComponentUrl();
+
+    public void ping() {
+        LOG.info("pong");
+    }
+
+    @Override
+    public void onTrigger(ProcessContext arg0, ProcessSession arg1) throws ProcessException {
+        LOG.info("Bang you triggered DCAEProcessor!");
+        return;
+    }
+
+    /**
+     * This function gets implemented by the ProcessorBuilder magic to build a new custom list of
+     * PropertyDescriptor every time. This is to be used by getSupportedPropertyDescriptors() which
+     * *should* only call this method once to initially fill the cache.
+     * 
+     * @return list of PropertyDescriptor
+     */
+    abstract protected List<PropertyDescriptor> buildSupportedPropertyDescriptors();
+
+    // Cache of PropertyDescriptors which should be static
+    private List<PropertyDescriptor> properties;
+
+    /**
+     * This is the critical Nifi function that is used to populate the configuration parameters
+     * in the UI and drive all the other configuration related functions in the ConfigurableComponent
+     * base class
+     */
+    @Override
+    protected List<PropertyDescriptor> getSupportedPropertyDescriptors() {
+        if (this.properties == null) {
+            this.properties = buildSupportedPropertyDescriptors();
+        }
+        return this.properties;
+    }
+
+    abstract protected Set<Relationship> buildRelationships();
+
+    // Cache of Relationships which should be static
+    private Set<Relationship> relationships;
+
+    @Override
+    public Set<Relationship> getRelationships() {
+        if (this.relationships == null) {
+            this.relationships = buildRelationships();
+        }
+        return this.relationships;
+    }
+
+}
+\ No newline at end of file