Java tutorial
/* * 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.spark; import static org.junit.Assert.assertEquals; import static org.junit.Assert.assertTrue; import java.io.File; import java.util.HashMap; import java.util.LinkedList; import java.util.Properties; import org.apache.spark.SparkConf; import org.apache.zeppelin.display.AngularObjectRegistry; import org.apache.zeppelin.display.GUI; import org.apache.zeppelin.interpreter.*; import org.apache.zeppelin.interpreter.InterpreterResult.Code; import org.apache.zeppelin.resource.LocalResourcePool; import org.apache.zeppelin.user.AuthenticationInfo; import org.junit.After; import org.junit.Before; import org.junit.FixMethodOrder; import org.junit.Test; import org.junit.runners.MethodSorters; @FixMethodOrder(MethodSorters.NAME_ASCENDING) public class IUberSparkInterpreterTest { public static IUberSparkInterpreter repl; private InterpreterContext context; private File tmpDir; @Before public void setUp() throws Exception { tmpDir = new File(System.getProperty("java.io.tmpdir") + "/ZeppelinLTest_" + System.currentTimeMillis()); System.setProperty("zeppelin.dep.localrepo", tmpDir.getAbsolutePath() + "/local-repo"); tmpDir.mkdirs(); if (repl == null) { Properties p = new Properties(); repl = new IUberSparkInterpreter(p); repl.open(); } InterpreterGroup intpGroup = new InterpreterGroup(); context = new InterpreterContext("id", "title", "text", "columnId", new AuthenticationInfo(), new HashMap<String, Object>(), new GUI(), new AngularObjectRegistry(intpGroup.getId(), null), new LocalResourcePool("id"), new LinkedList<InterpreterContextRunner>(), new InterpreterOutput(new InterpreterOutputListener() { @Override public void onAppend(InterpreterOutput interpreterOutput, byte[] bytes) { } @Override public void onUpdate(InterpreterOutput interpreterOutput, byte[] bytes) { } })); } @After public void tearDown() throws Exception { delete(tmpDir); } private void delete(File file) { if (file.isFile()) file.delete(); else if (file.isDirectory()) { File[] files = file.listFiles(); if (files != null && files.length > 0) { for (File f : files) { delete(f); } } file.delete(); } } @Test public void testBasicIntp() { assertEquals(Code.SUCCESS, repl.interpret("val a = 1\nval b = 2", context).code()); // when interpret incomplete expression InterpreterResult incomplete = repl.interpret("val a = \"\"\"", context); assertEquals(Code.INCOMPLETE, incomplete.code()); assertTrue(incomplete.message().length() > 0); // expecting some error message /* assertEquals(1, repl.getValue("a")); assertEquals(2, repl.getValue("b")); repl.interpret("val ver = sc.version"); assertNotNull(repl.getValue("ver")); assertEquals("HELLO\n", repl.interpret("println(\"HELLO\")").message()); */ } @Test public void testEndWithComment() { assertEquals(Code.SUCCESS, repl.interpret("val c=1\n//comment", context).code()); } @Test public void testSparkSql() { repl.interpret("case class Person(name:String, age:Int)\n", context); repl.interpret( "val people = sc.parallelize(Seq(Person(\"moon\", 33), Person(\"jobs\", 51), Person(\"gates\", 51), Person(\"park\", 34)))\n", context); assertEquals(Code.SUCCESS, repl.interpret("people.take(3)", context).code()); // create new interpreter Properties p = new Properties(); IUberSparkInterpreter repl2 = new IUberSparkInterpreter(p); repl2.open(); repl.interpret("case class Man(name:String, age:Int)", context); repl.interpret( "val man = sc.parallelize(Seq(Man(\"moon\", 33), Man(\"jobs\", 51), Man(\"gates\", 51), Man(\"park\", 34)))", context); assertEquals(Code.SUCCESS, repl.interpret("man.take(3)", context).code()); repl2.getSparkContext().stop(); } @Test public void testReferencingUndefinedVal() { InterpreterResult result = repl .interpret("def category(min: Int) = {" + " if (0 <= value) \"error\"" + "}", context); assertEquals(Code.ERROR, result.code()); } @Test public void testZContextDependencyLoading() { // try to import library does not exist on classpath. it'll fail assertEquals(Code.ERROR, repl.interpret("import org.apache.commons.csv.CSVFormat", context).code()); // load library from maven repository and try to import again repl.interpret("z.load(\"org.apache.commons:commons-csv:1.1\")", context); assertEquals(Code.SUCCESS, repl.interpret("import org.apache.commons.csv.CSVFormat", context).code()); } @Test public void emptyConfigurationVariablesOnlyForNonSparkProperties() { Properties intpProperty = repl.getProperty(); SparkConf sparkConf = repl.getSparkContext().getConf(); for (Object oKey : intpProperty.keySet()) { String key = (String) oKey; String value = (String) intpProperty.get(key); repl.logger.debug(String.format("[%s]: [%s]", key, value)); if (key.startsWith("spark.") && value.isEmpty()) { assertTrue(String.format("configuration starting from 'spark.' should not be empty. [%s]", key), !sparkConf.contains(key) || !sparkConf.get(key).isEmpty()); } } } }