/**
* 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.hbase.http;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.URL;
import java.net.URLConnection;
import java.util.Set;
import java.util.TreeSet;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.SmallTests;
import org.apache.hadoop.hbase.http.FilterContainer;
import org.apache.hadoop.hbase.http.FilterInitializer;
import org.apache.hadoop.hbase.http.HttpServer;
import org.apache.hadoop.net.NetUtils;
import org.junit.Test;
import org.junit.experimental.categories.Category;
@Category(SmallTests.class)
public class TestGlobalFilter extends HttpServerFunctionalTest {
static final Log LOG = LogFactory.getLog(HttpServer.class);
static final Set<String> RECORDS = new TreeSet<String>();
/** A very simple filter that records accessed uri's */
static public class RecordingFilter implements Filter {
private FilterConfig filterConfig = null;
@Override
public void init(FilterConfig filterConfig) {
this.filterConfig = filterConfig;
}
@Override
public void destroy() {
this.filterConfig = null;
}
@Override
public void doFilter(ServletRequest request, ServletResponse response,
FilterChain chain) throws IOException, ServletException {
if (filterConfig == null)
return;
String uri = ((HttpServletRequest)request).getRequestURI();
LOG.info("filtering " + uri);
RECORDS.add(uri);
chain.doFilter(request, response);
}
/** Configuration for RecordingFilter */
static public class Initializer extends FilterInitializer {
public Initializer() {}
@Override
public void initFilter(FilterContainer container, Configuration conf) {
container.addGlobalFilter("recording", RecordingFilter.class.getName(), null);
}
}
}
/** access a url, ignoring some IOException such as the page does not exist */
static void access(String urlstring) throws IOException {
LOG.warn("access " + urlstring);
URL url = new URL(urlstring);
URLConnection connection = url.openConnection();
connection.connect();
try {
BufferedReader in = new BufferedReader(new InputStreamReader(
connection.getInputStream()));
try {
for(; in.readLine() != null; );
} finally {
in.close();
}
} catch(IOException ioe) {
LOG.warn("urlstring=" + urlstring, ioe);
}
}
@Test
public void testServletFilter() throws Exception {
Configuration conf = new Configuration();
//start a http server with CountingFilter
conf.set(HttpServer.FILTER_INITIALIZERS_PROPERTY,
RecordingFilter.Initializer.class.getName());
HttpServer http = createTestServer(conf);
http.start();
final String fsckURL = "/fsck";
final String stacksURL = "/stacks";
final String ajspURL = "/a.jsp";
final String listPathsURL = "/listPaths";
final String dataURL = "/data";
final String streamFile = "/streamFile";
final String rootURL = "/";
final String allURL = "/*";
final String outURL = "/static/a.out";
final String logURL = "/logs/a.log";
final String[] urls = {fsckURL, stacksURL, ajspURL, listPathsURL,
dataURL, streamFile, rootURL, allURL, outURL, logURL};
//access the urls
final String prefix = "http://"
+ NetUtils.getHostPortString(http.getConnectorAddress(0));
try {
for(int i = 0; i < urls.length; i++) {
access(prefix + urls[i]);
}
} finally {
http.stop();
}
LOG.info("RECORDS = " + RECORDS);
//verify records
for(int i = 0; i < urls.length; i++) {
assertTrue(RECORDS.remove(urls[i]));
}
assertTrue(RECORDS.isEmpty());
}
}