/**
* 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.hadoop.raid;
import java.io.File;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.net.URI;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hdfs.DFSTestUtil;
import org.apache.hadoop.hdfs.DFSUtil;
import org.apache.hadoop.hdfs.MiniDFSCluster;
import org.apache.hadoop.hdfs.protocol.FSConstants;
import org.apache.hadoop.hdfs.server.namenode.JspHelper;
import org.apache.hadoop.hdfs.util.InjectionEvent;
import org.apache.hadoop.util.InjectionEventI;
import org.apache.hadoop.util.InjectionHandler;
import static org.junit.Assert.*;
/* A very simple test to verify namenode UI behaves well when raidnode UI goes
* wrong. Namenode web ui will call raidnode webui, which is then processed in
* CorruptFileCounterServlet.
* InjectionHandler.processEventIO(InjectionEvent.RAID_HTTPSERVER_TIMEOUT) is
* called and triggers the TestRaidHTTPInjectionHandler code.
* TestRaidHTTPInjectionHandler maintains a counter, the first call will sleep
* 10 seconds, the second call will throw an exception,
* the third call will do nothing and return successfully.
*/
public class TestRaidUI {
final static Log LOG = LogFactory.getLog(TestRaidUI.class);
final static String TEST_DIR = new File(System.getProperty("test.build.data",
"build/contrib/raid/test/data")).getAbsolutePath();
final static String CONFIG_FILE = new File(TEST_DIR,
"test-raid.xml").getAbsolutePath();
Configuration conf;
String namenode = null;
MiniDFSCluster dfsCluster = null;
String hftp = null;
FileSystem fileSys = null;
RaidNode cnode = null;
class TestRaidHTTPInjectionHandler extends InjectionHandler {
public int counter = 0;
@Override
public void _processEventIO(InjectionEventI event, Object... args)
throws IOException {
if (event == InjectionEvent.RAID_HTTPSERVER_TIMEOUT) {
counter++;
if (counter == 1) {
DFSTestUtil.waitNSecond(10);
} else if (counter == 2) {
throw new IOException("Error happens!");
}
}
}
}
@Test
public void testRaidUI() throws Exception {
Configuration localConf = new Configuration(conf);
cnode = RaidNode.createRaidNode(null, localConf);
InetSocketAddress infoSocAddr = dfsCluster.getNameNode().getHttpAddress();
InjectionHandler h = new TestRaidHTTPInjectionHandler();
InjectionHandler.set(h);
LOG.info("First call will fail with timeout because RaidNode UI will " +
"hang for 10 seconds. Check TestRaidHTTPInjectionHandler when " +
"counter == 1");
long stime = System.currentTimeMillis();
String httpContent = DFSUtil.getHTMLContent(
new URI("http", null, infoSocAddr.getHostName(),
infoSocAddr.getPort(), "/dfshealth.jsp", null, null));
LOG.info("Output1: " + httpContent);
long duration = System.currentTimeMillis() - stime;
long expectTimeout = JspHelper.RAID_UI_CONNECT_TIMEOUT +
JspHelper.RAID_UI_READ_TIMEOUT;
assertTrue("Should take less than " + expectTimeout + "ms actual time: " +
duration, duration < expectTimeout + 1000);
assertTrue("Should get timeout error",
httpContent.contains("Raidnode didn't response"));
assertFalse("Shouldn't get right result",
httpContent.contains("WARNING Corrupt files"));
LOG.info("Second call will fail with error because RaidNode UI throw " +
"an IOException. Check TestRaidHTTPInjectionHandler when counter == 2");
httpContent = DFSUtil.getHTMLContent(
new URI("http", null, infoSocAddr.getHostName(),
infoSocAddr.getPort(), "/dfshealth.jsp", null, null));
LOG.info("Output2: " + httpContent);
assertTrue("Should get error",
httpContent.contains("Raidnode is unreachable"));
assertFalse("Shouldn't get right result",
httpContent.contains("WARNING Corrupt files"));
LOG.info("Third call will succeed");
httpContent = DFSUtil.getHTMLContent(
new URI("http", null, infoSocAddr.getHostName(),
infoSocAddr.getPort(), "/dfshealth.jsp", null, null));
LOG.info("Output3: " + httpContent);
assertTrue("Should get right result",
httpContent.contains("WARNING Corrupt files"));
}
@Before
public void setUp() throws IOException {
if (System.getProperty("hadoop.log.dir") == null) {
String base = new File(".").getAbsolutePath();
System.setProperty("hadoop.log.dir", new Path(base).toString() + "/logs");
}
new File(TEST_DIR).mkdirs(); // Make sure data directory exists
conf = new Configuration();
conf.set("raid.config.file", CONFIG_FILE);
// do not use map-reduce cluster for Raiding
conf.set("raid.classname", "org.apache.hadoop.raid.LocalRaidNode");
conf.set("raid.server.address", "localhost:" + MiniDFSCluster.getFreePort());
String raidHttpAddress = "localhost:" + MiniDFSCluster.getFreePort();
conf.set("mapred.raid.http.address", raidHttpAddress);
conf.set(FSConstants.DFS_RAIDNODE_HTTP_ADDRESS_KEY, raidHttpAddress);
Utils.loadTestCodecs(conf, 3, 1, 3, "/destraid", "/destraidrs");
dfsCluster = new MiniDFSCluster(conf, 1, true, null);
dfsCluster.waitActive();
fileSys = dfsCluster.getFileSystem();
namenode = fileSys.getUri().toString();
FileSystem.setDefaultUri(conf, namenode);
ConfigBuilder cb = new ConfigBuilder(CONFIG_FILE);
cb.persist();
}
@After
public void tearDown() throws IOException {
if (cnode != null) { cnode.stop(); cnode.join(); }
if (dfsCluster != null) {dfsCluster.shutdown();}
InjectionHandler.clear();
}
}