| /* |
| * 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.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 org.apache.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); |
| } |
| } |
| } |
| } |
| } |
| } |