NIFI-4: Added OnEnabled and OnDisabled annotations to the lifecycle package

nifi/nifi-api/src/main/java/org/apache/nifi/annotation/lifecycle/OnDisabled.java

@@ -0,0 +1,46 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.apache.nifi.annotation.lifecycle;
+
+import java.lang.annotation.Documented;
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Inherited;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * Marker annotation a {@link org.apache.nifi.processor.Processor Processor},
+ * {@link org.apache.nifi.controller.ControllerService ControllerService} or 
+ * {@link org.apache.nifi.reporting.ReportingTask ReportingTask}  
+ * can use to indicate a method should be called whenever the component is disabled. 
+ *
+ * <p>
+ * Methods using this annotation must take no arguments. If a method with this annotation
+ * throws a Throwable, a log message and bulletin will be issued for the component, but
+ * the component will still be disabled.
+ * </p>
+ *
+ * @author none
+ */
+@Documented
+@Target({ElementType.METHOD})
+@Retention(RetentionPolicy.RUNTIME)
+@Inherited
+public @interface OnDisabled {
+
+}

nifi/nifi-api/src/main/java/org/apache/nifi/annotation/lifecycle/OnEnabled.java

@@ -0,0 +1,46 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.apache.nifi.annotation.lifecycle;
+
+import java.lang.annotation.Documented;
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Inherited;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * Marker annotation a {@link org.apache.nifi.processor.Processor Processor},
+ * {@link org.apache.nifi.controller.ControllerService ControllerService} or 
+ * {@link org.apache.nifi.reporting.ReportingTask ReportingTask}  
+ * can use to indicate a method should be called whenever the component is enabled. 
+ *
+ * <p>
+ * Methods using this annotation must take no arguments. If a method with this annotation
+ * throws a Throwable, a log message and bulletin will be issued for the component, but
+ * the component will still be enabled.
+ * </p>
+ *
+ * @author none
+ */
+@Documented
+@Target({ElementType.METHOD})
+@Retention(RetentionPolicy.RUNTIME)
+@Inherited
+public @interface OnEnabled {
+
+}