| /* |
| * Copyright 1999-2004 The Apache Software Foundation |
| * |
| * Licensed 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.jk.status; |
| |
| import java.io.IOException; |
| import java.net.HttpURLConnection; |
| import java.net.MalformedURLException; |
| import java.net.ProtocolException; |
| import java.net.URL; |
| import java.net.URLConnection; |
| |
| import org.apache.catalina.util.Base64; |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.tomcat.util.digester.Digester; |
| |
| /** |
| * @author Peter Rossbach |
| * @version $Revision:$ $Date:$ |
| * @see org.apache.jk.status.JkStatusParser |
| * @since 5.5.10 |
| */ |
| public class JkStatusAccessor { |
| |
| private static Log log = LogFactory.getLog(JkStatusAccessor.class); |
| /** |
| * The descriptive information about this implementation. |
| */ |
| protected static final String info = "org.apache.jk.status.JkStatusAccessor/1.0"; |
| |
| /** |
| * Parse Apache mod_jk Status from base url http://host:port/jkstatus) |
| * @param url |
| * @param username |
| * @param password |
| * |
| */ |
| public JkStatus status(String url, String username, String password) |
| throws Exception { |
| |
| if(url == null || "".equals(url)) |
| return null ; |
| HttpURLConnection hconn = null; |
| JkStatus status = null; |
| |
| try { |
| hconn = openConnection(url + "?cmd=show&mime=xml", username, password); |
| Digester digester = JkStatusParser.getDigester(); |
| synchronized (digester) { |
| status = (JkStatus) digester.parse(hconn.getInputStream()); |
| } |
| } catch (Throwable t) { |
| throw new Exception(t); |
| } finally { |
| if (hconn != null) { |
| try { |
| hconn.disconnect(); |
| } catch (Throwable u) { |
| ; |
| } |
| hconn = null; |
| } |
| } |
| return status; |
| } |
| |
| /** |
| * Create a auth http connection for this url |
| * |
| * @param url |
| * @param username |
| * @param password |
| * @return |
| * @throws IOException |
| * @throws MalformedURLException |
| * @throws ProtocolException |
| */ |
| protected HttpURLConnection openConnection(String url, String username, |
| String password) throws IOException, MalformedURLException, |
| ProtocolException { |
| URLConnection conn; |
| conn = (new URL(url)).openConnection(); |
| HttpURLConnection hconn = (HttpURLConnection) conn; |
| |
| // Set up standard connection characteristics |
| hconn.setAllowUserInteraction(false); |
| hconn.setDoInput(true); |
| hconn.setUseCaches(false); |
| hconn.setDoOutput(false); |
| hconn.setRequestMethod("GET"); |
| hconn.setRequestProperty("User-Agent", "JkStatus-Client/1.0"); |
| |
| if(username != null && password != null ) { |
| setAuthHeader(hconn, username, password); |
| } |
| // Establish the connection with the server |
| hconn.connect(); |
| return hconn; |
| } |
| |
| /** |
| * Set Basic Auth Header |
| * |
| * @param hconn |
| * @param username |
| * @param password |
| */ |
| protected void setAuthHeader(HttpURLConnection hconn, String username, |
| String password) { |
| // Set up an authorization header with our credentials |
| String input = username + ":" + password; |
| String output = new String(Base64.encode(input.getBytes())); |
| hconn.setRequestProperty("Authorization", "Basic " + output); |
| } |
| |
| } |