/* * 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 gobblin.aws; import java.util.List; import org.apache.helix.messaging.AsyncCallback; import org.apache.helix.model.Message; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import com.google.common.base.Optional; import gobblin.annotation.Alpha; /** * Class that handles Helix shutdown response and consequently shutdowns Amazon AutoScaling group. * * @author Abhishek Tiwari */ @Alpha public class AWSShutdownHandler extends AsyncCallback { private static final Logger LOGGER = LoggerFactory.getLogger(AWSShutdownHandler.class); private final AWSSdkClient awsSdkClient; private final Optional<List<String>> optionalLaunchConfigurationNames; private final Optional<List<String>> optionalAutoScalingGroupNames; public AWSShutdownHandler(AWSSdkClient awsSdkClient, Optional<List<String>> optionalLaunchConfigurationNames, Optional<List<String>> optionalAutoScalingGroupNames) { this.awsSdkClient = awsSdkClient; this.optionalLaunchConfigurationNames = optionalLaunchConfigurationNames; this.optionalAutoScalingGroupNames = optionalAutoScalingGroupNames; } @Override public void onTimeOut() { LOGGER.warn("Timeout while waiting for Helix controller and participants shutdown. " + "Moving ahead with forced shutdown of Amazon AutoScaling group"); shutdownASG(); } @Override public void onReplyMessage(Message message) { LOGGER.info("Successfully shutdown Helix controller and participants shutdown. " + "Moving ahead with graceful shutdown of Amazon AutoScaling group"); shutdownASG(); } private void shutdownASG() { if (optionalLaunchConfigurationNames.isPresent()) { for (String launchConfigurationName : optionalLaunchConfigurationNames.get()) { try { this.awsSdkClient.deleteLaunchConfiguration(launchConfigurationName); } catch (Exception e) { // Ignore and continue, so that we clean up as many resources as possible LOGGER.warn("Issue in deleting launch configuration, please delete manually: " + launchConfigurationName + " Continuing to cleanup AutoScalingGroups", e); } } } if (optionalAutoScalingGroupNames.isPresent()) { for (String autoScalingGroupName : optionalAutoScalingGroupNames.get()) { try { this.awsSdkClient.deleteAutoScalingGroup(autoScalingGroupName, false); } catch (Exception e1) { LOGGER.warn("Issue in deleting auto scaling group (in graceful mode): " + autoScalingGroupName + " Going to try forceful cleanup.", e1); try { // Delete forcefully this.awsSdkClient.deleteAutoScalingGroup(autoScalingGroupName, true); } catch (Exception e2) { // Ignore and continue, so that we clean up as many resources as possible LOGGER.warn("Issue in deleting auto scaling group (in forced mode), please delete manually: " + autoScalingGroupName + " Continuing to cleanup other resources", e2); } } } } } }