/* * 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.zeppelin.beam; import java.io.File; import java.util.Collections; import java.util.List; import java.util.Properties; import java.util.UUID; import org.apache.zeppelin.interpreter.Interpreter; import org.apache.zeppelin.interpreter.InterpreterContext; import org.apache.zeppelin.interpreter.InterpreterResult; import org.apache.zeppelin.interpreter.thrift.InterpreterCompletion; import org.slf4j.Logger; import org.slf4j.LoggerFactory; /** * Beam interpreter * */ public class BeamInterpreter extends Interpreter { Logger logger = LoggerFactory.getLogger(BeamInterpreter.class); public BeamInterpreter(Properties property) { super(property); } @Override public void open() { } @Override public void close() { File dir = new File("."); // delete all .class files created while compilation process for (int i = 0; i < dir.list().length; i++) { File f = dir.listFiles()[i]; if (f.getAbsolutePath().endsWith(".class")) { f.delete(); } } } @Override public InterpreterResult interpret(String code, InterpreterContext context) { // choosing new name to class containing Main method String generatedClassName = "C" + UUID.randomUUID().toString().replace("-", ""); try { String res = StaticRepl.execute(generatedClassName, code); return new InterpreterResult(InterpreterResult.Code.SUCCESS, res); } catch (Exception e) { logger.error("Exception in Interpreter while interpret", e); return new InterpreterResult(InterpreterResult.Code.ERROR, e.getMessage()); } } @Override public void cancel(InterpreterContext context) { } @Override public FormType getFormType() { return FormType.SIMPLE; } @Override public int getProgress(InterpreterContext context) { return 0; } @Override public List<InterpreterCompletion> completion(String buf, int cursor, InterpreterContext interpreterContext) { return Collections.emptyList(); } }