/*
* 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.spring;
import org.apache.nifi.authorization.Authorizer;
import org.apache.nifi.cluster.coordination.ClusterCoordinator;
import org.apache.nifi.cluster.protocol.impl.NodeProtocolSenderListener;
import org.apache.nifi.controller.FlowController;
import org.apache.nifi.controller.StandardFlowService;
import org.apache.nifi.encrypt.StringEncryptor;
import org.apache.nifi.services.FlowService;
import org.apache.nifi.util.NiFiProperties;
import org.apache.nifi.web.revision.RevisionManager;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.FactoryBean;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
/**
* Factory bean for creating a singleton FlowController instance. If the application is configured to act as the cluster manager, then null is always returned as the created instance.
*/
@SuppressWarnings("rawtypes")
public class StandardFlowServiceFactoryBean implements FactoryBean, ApplicationContextAware {
private ApplicationContext applicationContext;
private FlowService flowService;
private NiFiProperties properties;
private StringEncryptor encryptor;
private Authorizer authorizer;
@Override
public Object getObject() throws Exception {
if (flowService == null) {
final FlowController flowController = applicationContext.getBean("flowController", FlowController.class);
final RevisionManager revisionManager = applicationContext.getBean("revisionManager", RevisionManager.class);
if (properties.isNode()) {
final NodeProtocolSenderListener nodeProtocolSenderListener = applicationContext.getBean("nodeProtocolSenderListener", NodeProtocolSenderListener.class);
final ClusterCoordinator clusterCoordinator = applicationContext.getBean("clusterCoordinator", ClusterCoordinator.class);
flowService = StandardFlowService.createClusteredInstance(
flowController,
properties,
nodeProtocolSenderListener,
clusterCoordinator,
encryptor,
revisionManager,
authorizer);
} else {
flowService = StandardFlowService.createStandaloneInstance(
flowController,
properties,
encryptor,
revisionManager,
authorizer);
}
}
return flowService;
}
@Override
public Class getObjectType() {
return FlowService.class;
}
@Override
public boolean isSingleton() {
return true;
}
@Override
public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
this.applicationContext = applicationContext;
}
public void setProperties(NiFiProperties properties) {
this.properties = properties;
}
public void setEncryptor(StringEncryptor encryptor) {
this.encryptor = encryptor;
}
public void setAuthorizer(Authorizer authorizer) {
this.authorizer = authorizer;
}
}