/* * 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.livy; import java.util.Properties; /** * Livy Spark interpreter for Zeppelin. */ public class LivySparkInterpreter extends BaseLivyInterpreter { public LivySparkInterpreter(Properties property) { super(property); } @Override public String getSessionKind() { return "spark"; } @Override protected String extractAppId() throws LivyException { return extractStatementResult( interpret("sc.applicationId", null, false, false).message() .get(0).getData()); } @Override protected String extractWebUIAddress() throws LivyException { interpret( "val webui=sc.getClass.getMethod(\"ui\").invoke(sc).asInstanceOf[Some[_]].get", null, false, false); return extractStatementResult( interpret( "webui.getClass.getMethod(\"appUIAddress\").invoke(webui)", null, false, false) .message().get(0).getData()); } /** * Extract the eval result of spark shell, e.g. extract application_1473129941656_0048 * from following: * res0: String = application_1473129941656_0048 * * @param result * @return */ public String extractStatementResult(String result) { int pos = -1; if ((pos = result.indexOf("=")) >= 0) { return result.substring(pos + 1).trim(); } else { throw new RuntimeException("No result can be extracted from '" + result + "', " + "something must be wrong"); } } }