org.apache.zeppelin.interpreter.InterpreterFactoryTest.java Source code

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/*
 * 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.interpreter;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;

import java.io.File;
import java.io.IOException;
import java.util.List;
import java.util.Properties;

import org.apache.commons.lang.NullArgumentException;
import org.apache.zeppelin.conf.ZeppelinConfiguration;
import org.apache.zeppelin.conf.ZeppelinConfiguration.ConfVars;
import org.apache.zeppelin.interpreter.mock.MockInterpreter1;
import org.apache.zeppelin.interpreter.mock.MockInterpreter2;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;

public class InterpreterFactoryTest {

    private InterpreterFactory factory;
    private File tmpDir;
    private ZeppelinConfiguration conf;
    private InterpreterContext context;

    @Before
    public void setUp() throws Exception {
        tmpDir = new File(System.getProperty("java.io.tmpdir") + "/ZeppelinLTest_" + System.currentTimeMillis());
        tmpDir.mkdirs();
        new File(tmpDir, "conf").mkdirs();

        MockInterpreter1.register("mock1", "org.apache.zeppelin.interpreter.mock.MockInterpreter1");
        MockInterpreter2.register("mock2", "org.apache.zeppelin.interpreter.mock.MockInterpreter2");

        System.setProperty(ConfVars.ZEPPELIN_HOME.getVarName(), tmpDir.getAbsolutePath());
        System.setProperty(ConfVars.ZEPPELIN_INTERPRETERS.getVarName(),
                "org.apache.zeppelin.interpreter.mock.MockInterpreter1,org.apache.zeppelin.interpreter.mock.MockInterpreter2");
        conf = new ZeppelinConfiguration();
        factory = new InterpreterFactory(conf, new InterpreterOption(false), null);
        context = new InterpreterContext("note", "id", "title", "text", null, null, null, null);

    }

    @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 testBasic() {
        List<String> all = factory.getDefaultInterpreterSettingList();

        // get interpreter
        Interpreter repl1 = factory.get(all.get(0)).getInterpreterGroup().getFirst();
        assertFalse(((LazyOpenInterpreter) repl1).isOpen());
        repl1.interpret("repl1", context);
        assertTrue(((LazyOpenInterpreter) repl1).isOpen());

        // try to get unavailable interpreter
        assertNull(factory.get("unknown"));

        // restart interpreter
        factory.restart(all.get(0));
        repl1 = factory.get(all.get(0)).getInterpreterGroup().getFirst();
        assertFalse(((LazyOpenInterpreter) repl1).isOpen());
    }

    @Test
    public void testFactoryDefaultList() throws IOException {
        // get default list from default setting
        List<String> all = factory.getDefaultInterpreterSettingList();
        assertEquals(2, all.size());
        assertEquals(factory.get(all.get(0)).getInterpreterGroup().getFirst().getClassName(),
                "org.apache.zeppelin.interpreter.mock.MockInterpreter1");

        // add setting
        factory.add("a mock", "mock2", new InterpreterOption(false), new Properties());
        all = factory.getDefaultInterpreterSettingList();
        assertEquals(2, all.size());
        assertEquals("mock1", factory.get(all.get(0)).getName());
        assertEquals("a mock", factory.get(all.get(1)).getName());
    }

    @Test
    public void testExceptions() throws IOException {
        List<String> all = factory.getDefaultInterpreterSettingList();
        // add setting with null option & properties expected nullArgumentException.class
        try {
            factory.add("a mock", "mock2", null, new Properties());
        } catch (NullArgumentException e) {
            assertEquals("Test null option", e.getMessage(), new NullArgumentException("option").getMessage());
        }
        try {
            factory.add("a mock", "mock2", new InterpreterOption(false), null);
        } catch (NullArgumentException e) {
            assertEquals("Test null properties", e.getMessage(),
                    new NullArgumentException("properties").getMessage());
        }
    }

    @Test
    public void testSaveLoad() throws InterpreterException, IOException {
        // interpreter settings
        assertEquals(2, factory.get().size());

        // check if file saved
        assertTrue(new File(conf.getInterpreterSettingPath()).exists());

        factory.add("newsetting", "mock1", new InterpreterOption(false), new Properties());
        assertEquals(3, factory.get().size());

        InterpreterFactory factory2 = new InterpreterFactory(conf, null);
        assertEquals(3, factory2.get().size());
    }
}