| /* |
| * 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.pirk.responder.wideskies.spark.streaming; |
| |
| import java.io.IOException; |
| import java.security.Permission; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.FileSystem; |
| import org.apache.pirk.responder.wideskies.spi.ResponderPlugin; |
| import org.apache.pirk.utils.PIRException; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Class to launch stand alone responder |
| */ |
| public class SparkStreamingResponder implements ResponderPlugin |
| { |
| private static final Logger logger = LoggerFactory.getLogger(SparkStreamingResponder.class); |
| |
| @Override |
| public String getPlatformName() |
| { |
| return "sparkstreaming"; |
| } |
| |
| @Override |
| public void run() throws PIRException |
| { |
| // For handling System.exit calls from Spark Streaming |
| System.setSecurityManager(new SystemExitManager()); |
| |
| FileSystem fileSys; |
| try |
| { |
| fileSys = FileSystem.get(new Configuration()); |
| } catch (IOException e) |
| { |
| throw new PIRException(e); |
| } |
| |
| logger.info("Launching Spark ComputeStreamingResponse:"); |
| ComputeStreamingResponse computeSR = null; |
| try |
| { |
| computeSR = new ComputeStreamingResponse(fileSys); |
| computeSR.performQuery(); |
| } catch (SystemExitException e) |
| { |
| // If System.exit(0) is not caught from Spark Streaming, |
| // the application will complete with a 'failed' status |
| logger.info("Exited with System.exit(0) from Spark Streaming"); |
| } catch (IOException e) |
| { |
| throw new PIRException(e); |
| } finally |
| { |
| // Teardown the context |
| if (computeSR != null) |
| computeSR.teardown(); |
| } |
| } |
| |
| // Exception and Security Manager classes used to catch System.exit from Spark Streaming |
| private static class SystemExitException extends SecurityException |
| { |
| private static final long serialVersionUID = 1L; |
| } |
| |
| private static class SystemExitManager extends SecurityManager |
| { |
| @Override |
| public void checkPermission(Permission perm) |
| {} |
| |
| @Override |
| public void checkExit(int status) |
| { |
| super.checkExit(status); |
| if (status == 0) // If we exited cleanly, throw SystemExitException |
| { |
| throw new SystemExitException(); |
| } |
| else |
| { |
| throw new SecurityException(); |
| } |
| } |
| } |
| } |