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 java.io.StringReader;
021import java.io.StringWriter;
022import java.util.HashSet;
023import java.util.Map;
024import java.util.Set;
025import javax.xml.parsers.DocumentBuilder;
026import javax.xml.parsers.DocumentBuilderFactory;
027import junit.framework.TestCase;
028import org.apache.hadoop.conf.Configuration;
029import org.apache.hadoop.hbase.HBaseClassTestRule;
030import org.apache.hadoop.hbase.testclassification.MiscTests;
031import org.apache.hadoop.hbase.testclassification.SmallTests;
032import org.eclipse.jetty.util.ajax.JSON;
033import org.junit.ClassRule;
034import org.junit.Test;
035import org.junit.experimental.categories.Category;
036import org.w3c.dom.Document;
037import org.w3c.dom.Element;
038import org.w3c.dom.Node;
039import org.w3c.dom.NodeList;
040import org.xml.sax.InputSource;
041
042/**
043 * Basic test case that the ConfServlet can write configuration
044 * to its output in XML and JSON format.
045 */
046@Category({MiscTests.class, SmallTests.class})
047public class TestConfServlet extends TestCase {
048
049  @ClassRule
050  public static final HBaseClassTestRule CLASS_RULE =
051      HBaseClassTestRule.forClass(TestConfServlet.class);
052
053  private static final String TEST_KEY = "testconfservlet.key";
054  private static final String TEST_VAL = "testval";
055
056  private Configuration getTestConf() {
057    Configuration testConf = new Configuration();
058    testConf.set(TEST_KEY, TEST_VAL);
059    return testConf;
060  }
061
062  @Test
063  @SuppressWarnings("unchecked")
064  public void testWriteJson() throws Exception {
065    StringWriter sw = new StringWriter();
066    ConfServlet.writeResponse(getTestConf(), sw, "json");
067    String json = sw.toString();
068    boolean foundSetting = false;
069    Set<String> programSet = new HashSet<>();
070    programSet.add("programatically");
071    programSet.add("programmatically");
072    Object parsed = JSON.parse(json);
073    Object[] properties = ((Map<String, Object[]>)parsed).get("properties");
074    for (Object o : properties) {
075      Map<String, Object> propertyInfo = (Map<String, Object>)o;
076      String key = (String)propertyInfo.get("key");
077      String val = (String)propertyInfo.get("value");
078      String resource = (String)propertyInfo.get("resource");
079      System.err.println("k: " + key + " v: " + val + " r: " + resource);
080      if (TEST_KEY.equals(key) && TEST_VAL.equals(val)
081          && programSet.contains(resource)) {
082        foundSetting = true;
083      }
084    }
085    assertTrue(foundSetting);
086  }
087
088  @Test
089  public void testWriteXml() throws Exception {
090    StringWriter sw = new StringWriter();
091    ConfServlet.writeResponse(getTestConf(), sw, "xml");
092    String xml = sw.toString();
093
094    DocumentBuilderFactory docBuilderFactory
095      = DocumentBuilderFactory.newInstance();
096    DocumentBuilder builder = docBuilderFactory.newDocumentBuilder();
097    Document doc = builder.parse(new InputSource(new StringReader(xml)));
098    NodeList nameNodes = doc.getElementsByTagName("name");
099    boolean foundSetting = false;
100    for (int i = 0; i < nameNodes.getLength(); i++) {
101      Node nameNode = nameNodes.item(i);
102      String key = nameNode.getTextContent();
103      System.err.println("xml key: " + key);
104      if (TEST_KEY.equals(key)) {
105        foundSetting = true;
106        Element propertyElem = (Element)nameNode.getParentNode();
107        String val = propertyElem.getElementsByTagName("value").item(0).getTextContent();
108        assertEquals(TEST_VAL, val);
109      }
110    }
111    assertTrue(foundSetting);
112  }
113
114  @Test
115  public void testBadFormat() throws Exception {
116    StringWriter sw = new StringWriter();
117    try {
118      ConfServlet.writeResponse(getTestConf(), sw, "not a format");
119      fail("writeResponse with bad format didn't throw!");
120    } catch (ConfServlet.BadFormatException bfe) {
121      // expected
122    }
123    assertEquals("", sw.toString());
124  }
125}