001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.apache.hadoop.hbase.http.conf;
019
020import static org.junit.Assert.assertEquals;
021import static org.junit.Assert.assertTrue;
022import static org.junit.Assert.fail;
023
024import java.io.StringReader;
025import java.io.StringWriter;
026import java.util.HashSet;
027import java.util.Map;
028import java.util.Set;
029import javax.xml.parsers.DocumentBuilder;
030import javax.xml.parsers.DocumentBuilderFactory;
031import org.apache.hadoop.conf.Configuration;
032import org.apache.hadoop.hbase.HBaseClassTestRule;
033import org.apache.hadoop.hbase.testclassification.MiscTests;
034import org.apache.hadoop.hbase.testclassification.SmallTests;
035import org.junit.ClassRule;
036import org.junit.Test;
037import org.junit.experimental.categories.Category;
038import org.w3c.dom.Document;
039import org.w3c.dom.Element;
040import org.w3c.dom.Node;
041import org.w3c.dom.NodeList;
042import org.xml.sax.InputSource;
043
044import org.apache.hbase.thirdparty.org.eclipse.jetty.util.ajax.JSON;
045
046/**
047 * Basic test case that the ConfServlet can write configuration to its output in XML and JSON
048 * format.
049 */
050@Category({ MiscTests.class, SmallTests.class })
051public class TestConfServlet {
052
053  @ClassRule
054  public static final HBaseClassTestRule CLASS_RULE =
055    HBaseClassTestRule.forClass(TestConfServlet.class);
056
057  private static final String TEST_KEY = "testconfservlet.key";
058  private static final String TEST_VAL = "testval";
059
060  private Configuration getTestConf() {
061    Configuration testConf = new Configuration();
062    testConf.set(TEST_KEY, TEST_VAL);
063    return testConf;
064  }
065
066  @Test
067  @SuppressWarnings("unchecked")
068  public void testWriteJson() throws Exception {
069    StringWriter sw = new StringWriter();
070    ConfServlet.writeResponse(getTestConf(), sw, "json");
071    String json = sw.toString();
072    boolean foundSetting = false;
073    Set<String> programSet = new HashSet<>();
074    programSet.add("programatically");
075    programSet.add("programmatically");
076    Object parsed = JSON.parse(json);
077    Object[] properties = ((Map<String, Object[]>) parsed).get("properties");
078    for (Object o : properties) {
079      Map<String, Object> propertyInfo = (Map<String, Object>) o;
080      String key = (String) propertyInfo.get("key");
081      String val = (String) propertyInfo.get("value");
082      String resource = (String) propertyInfo.get("resource");
083      System.err.println("k: " + key + " v: " + val + " r: " + resource);
084      if (TEST_KEY.equals(key) && TEST_VAL.equals(val) && programSet.contains(resource)) {
085        foundSetting = true;
086      }
087    }
088    assertTrue(foundSetting);
089  }
090
091  @Test
092  public void testWriteXml() throws Exception {
093    StringWriter sw = new StringWriter();
094    ConfServlet.writeResponse(getTestConf(), sw, "xml");
095    String xml = sw.toString();
096
097    DocumentBuilderFactory docBuilderFactory = DocumentBuilderFactory.newInstance();
098    DocumentBuilder builder = docBuilderFactory.newDocumentBuilder();
099    Document doc = builder.parse(new InputSource(new StringReader(xml)));
100    NodeList nameNodes = doc.getElementsByTagName("name");
101    boolean foundSetting = false;
102    for (int i = 0; i < nameNodes.getLength(); i++) {
103      Node nameNode = nameNodes.item(i);
104      String key = nameNode.getTextContent();
105      System.err.println("xml key: " + key);
106      if (TEST_KEY.equals(key)) {
107        foundSetting = true;
108        Element propertyElem = (Element) nameNode.getParentNode();
109        String val = propertyElem.getElementsByTagName("value").item(0).getTextContent();
110        assertEquals(TEST_VAL, val);
111      }
112    }
113    assertTrue(foundSetting);
114  }
115
116  @Test
117  public void testBadFormat() throws Exception {
118    StringWriter sw = new StringWriter();
119    try {
120      ConfServlet.writeResponse(getTestConf(), sw, "not a format");
121      fail("writeResponse with bad format didn't throw!");
122    } catch (ConfServlet.BadFormatException bfe) {
123      // expected
124    }
125    assertEquals("", sw.toString());
126  }
127}