1 package org.eclipse.jetty.servlet;
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15
16 import java.io.IOException;
17 import java.io.PrintWriter;
18 import java.lang.management.ManagementFactory;
19 import java.lang.management.MemoryMXBean;
20
21 import javax.servlet.ServletContext;
22 import javax.servlet.ServletException;
23 import javax.servlet.http.HttpServlet;
24 import javax.servlet.http.HttpServletRequest;
25 import javax.servlet.http.HttpServletResponse;
26
27 import org.eclipse.jetty.server.Connector;
28 import org.eclipse.jetty.server.Handler;
29 import org.eclipse.jetty.server.Server;
30 import org.eclipse.jetty.server.handler.ContextHandler;
31 import org.eclipse.jetty.server.handler.StatisticsHandler;
32 import org.eclipse.jetty.util.log.Log;
33
34 public class StatisticsServlet extends HttpServlet
35 {
36 boolean _restrictToLocalhost = true;
37 private Server _server = null;
38 private StatisticsHandler _statsHandler;
39 private MemoryMXBean _memoryBean;
40 private Connector[] _connectors;
41
42 public void init() throws ServletException
43 {
44 _memoryBean = ManagementFactory.getMemoryMXBean();
45
46 ServletContext context = getServletContext();
47 ContextHandler.Context scontext = (ContextHandler.Context) context;
48 _server = scontext.getContextHandler().getServer();
49
50 Handler handler = _server.getChildHandlerByClass(StatisticsHandler.class);
51
52 if (handler != null)
53 {
54 _statsHandler = (StatisticsHandler) handler;
55 }
56 else
57 {
58 Log.info("Installing Statistics Handler");
59 _statsHandler = new StatisticsHandler();
60 _server.setHandler(_statsHandler);
61 }
62
63
64 _connectors = _server.getConnectors();
65
66 if (getInitParameter("restrictToLocalhost") != null)
67 {
68 _restrictToLocalhost = "true".equals(getInitParameter("restrictToLocalhost"));
69 }
70
71 }
72
73 public void doPost(HttpServletRequest sreq, HttpServletResponse sres) throws ServletException, IOException
74 {
75 doGet(sreq, sres);
76 }
77
78 protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException
79 {
80
81 if (_restrictToLocalhost)
82 {
83 if (!"127.0.0.1".equals(req.getRemoteAddr()))
84 {
85 resp.sendError(HttpServletResponse.SC_SERVICE_UNAVAILABLE);
86 return;
87 }
88 }
89
90 String wantXml = req.getParameter("xml");
91 if (wantXml == null)
92 wantXml = req.getParameter("XML");
93
94 if (wantXml != null && "true".equalsIgnoreCase(wantXml))
95 {
96 sendXmlResponse(resp);
97 }
98 else
99 {
100 sendTextResponse(resp);
101 }
102
103 }
104
105 private void sendXmlResponse(HttpServletResponse response) throws IOException
106 {
107 StringBuilder sb = new StringBuilder();
108
109 sb.append("<statistics>\n");
110
111 sb.append(" <requests>\n");
112 sb.append(" <statsOnMs>").append(_statsHandler.getStatsOnMs()).append("</statsOnMs>\n");
113 sb.append(" <requests>").append(_statsHandler.getRequests()).append("</requests>\n");
114 sb.append(" <requestsTimedout>").append(_statsHandler.getRequestsTimedout()).append("</requestsTimedout>\n");
115 sb.append(" <requestsResumed>").append(_statsHandler.getRequestsResumed()).append("</requestsResumed>\n");
116 sb.append(" <requestsActive>").append(_statsHandler.getRequestsActive()).append("</requestsActive>\n");
117 sb.append(" <requestsActiveMin>").append(_statsHandler.getRequestsActiveMin()).append("</requestsActiveMin>\n");
118 sb.append(" <requestsActiveMax>").append(_statsHandler.getRequestsActiveMax()).append("</requestsActiveMax>\n");
119 sb.append(" <requestsDurationTotal>").append(_statsHandler.getRequestsDurationTotal()).append("</requestsDurationTotal>\n");
120 sb.append(" <requestsDurationAve>").append(_statsHandler.getRequestsDurationAve()).append("</requestsDurationAve>\n");
121 sb.append(" <requestsDurationMin>").append(_statsHandler.getRequestsDurationMin()).append("</requestsDurationMin>\n");
122 sb.append(" <requestsDurationMax>").append(_statsHandler.getRequestsDurationMax()).append("</requestsDurationMax>\n");
123 sb.append(" <requestsActiveDurationAve>").append(_statsHandler.getRequestsActiveDurationAve()).append("</requestsActiveDurationAve>\n");
124 sb.append(" <requestsActiveDurationMin>").append(_statsHandler.getRequestsActiveDurationMin()).append("</requestsActiveDurationMin>\n");
125 sb.append(" <requestsActiveDurationMax>").append(_statsHandler.getRequestsActiveDurationMax()).append("</requestsActiveDurationMax>\n");
126 sb.append(" </requests>\n");
127
128 sb.append(" <responses>\n");
129 sb.append(" <responses1xx>").append(_statsHandler.getResponses1xx()).append("</responses1xx>\n");
130 sb.append(" <responses2xx>").append(_statsHandler.getResponses2xx()).append("</responses2xx>\n");
131 sb.append(" <responses3xx>").append(_statsHandler.getResponses3xx()).append("</responses3xx>\n");
132 sb.append(" <responses4xx>").append(_statsHandler.getResponses4xx()).append("</responses4xx>\n");
133 sb.append(" <responses5xx>").append(_statsHandler.getResponses5xx()).append("</responses5xx>\n");
134 sb.append(" <responsesBytesTotal>").append(_statsHandler.getResponsesBytesTotal()).append("</responsesBytesTotal>\n");
135 sb.append(" </responses>\n");
136
137 sb.append(" <connections>\n");
138 for (Connector connector : _connectors)
139 {
140 sb.append(" <connector>\n");
141 sb.append(" <name>").append(connector.getName()).append("</name>\n");
142 sb.append(" <statsOn>").append(connector.getStatsOn()).append("</statsOn>\n");
143 if (connector.getStatsOn())
144 {
145 sb.append(" <statsOnMs>").append(connector.getStatsOnMs()).append("</statsOnMs>\n");
146 sb.append(" <connections>").append(connector.getConnections()).append("</connections>\n");
147 sb.append(" <connectionsOpen>").append(connector.getConnectionsOpen()).append("</connectionsOpen>\n");
148 sb.append(" <connectionsOpenMin>").append(connector.getConnectionsOpenMin()).append("</connectionsOpenMin>\n");
149 sb.append(" <connectionsOpenMax>").append(connector.getConnectionsOpenMax()).append("</connectionsOpenMax>\n");
150 sb.append(" <connectionsDurationTotal>").append(connector.getConnectionsDurationTotal()).append("</connectionsDurationTotal>\n");
151 sb.append(" <connectionsDurationAve>").append(connector.getConnectionsDurationAve()).append("</connectionsDurationAve>\n");
152 sb.append(" <connectionsDurationMin>").append(connector.getConnectionsDurationMin()).append("</connectionsDurationMin>\n");
153 sb.append(" <connectionsDurationMax>").append(connector.getConnectionsDurationMax()).append("</connectionsDurationMax>\n");
154 sb.append(" <requests>").append(connector.getRequests()).append("</requests>\n");
155 sb.append(" <connectionsRequestsAve>").append(connector.getConnectionsRequestsAve()).append("</connectionsRequestsAve>\n");
156 sb.append(" <connectionsRequestsMin>").append(connector.getConnectionsRequestsMin()).append("</connectionsRequestsMin>\n");
157 sb.append(" <connectionsRequestsMax>").append(connector.getConnectionsRequestsMax()).append("</connectionsRequestsMax>\n");
158 }
159 sb.append(" </connector>\n");
160 }
161 sb.append(" </connections>\n");
162
163 sb.append(" <memory>\n");
164 sb.append(" <heapMemoryUsage>").append(_memoryBean.getHeapMemoryUsage().getUsed()).append("</heapMemoryUsage>\n");
165 sb.append(" <nonHeapMemoryUsage>").append(_memoryBean.getNonHeapMemoryUsage().getUsed()).append("</nonHeapMemoryUsage>\n");
166 sb.append(" </memory>\n");
167
168 sb.append("</statistics>\n");
169
170 response.setContentType("text/xml");
171 PrintWriter pout = null;
172 pout = response.getWriter();
173 pout.write(sb.toString());
174 }
175
176 private void sendTextResponse(HttpServletResponse response) throws IOException
177 {
178
179 StringBuilder sb = new StringBuilder();
180
181 sb.append("<h1>Statistics:</h1>\n");
182
183 sb.append("<h2>Requests:</h2>\n");
184 sb.append("Statistics gathering started " + _statsHandler.getStatsOnMs() + "ms ago").append("<br />\n");
185 sb.append("Total requests: " + _statsHandler.getRequests()).append("<br />\n");
186 sb.append("Total requests timed out: " + _statsHandler.getRequestsTimedout()).append("<br />\n");
187 sb.append("Total requests resumed: " + _statsHandler.getRequestsResumed()).append("<br />\n");
188 sb.append("Current requests active: " + _statsHandler.getRequestsActive()).append("<br />\n");
189 sb.append("Min concurrent requests active: " + _statsHandler.getRequestsActiveMin()).append("<br />\n");
190 sb.append("Max concurrent requests active: " + _statsHandler.getRequestsActiveMax()).append("<br />\n");
191 sb.append("Total requests duration: " + _statsHandler.getRequestsDurationTotal()).append("<br />\n");
192 sb.append("Average request duration: " + _statsHandler.getRequestsDurationAve()).append("<br />\n");
193 sb.append("Min request duration: " + _statsHandler.getRequestsDurationMin()).append("<br />\n");
194 sb.append("Max request duration: " + _statsHandler.getRequestsDurationMax()).append("<br />\n");
195 sb.append("Average request active duration: " + _statsHandler.getRequestsActiveDurationAve()).append("<br />\n");
196 sb.append("Min request active duration: " + _statsHandler.getRequestsActiveDurationMin()).append("<br />\n");
197 sb.append("Max request active duration: " + _statsHandler.getRequestsActiveDurationMax()).append("<br />\n");
198
199 sb.append("<h2>Responses:</h2>\n");
200 sb.append("1xx responses: " + _statsHandler.getResponses1xx()).append("<br />\n");
201 sb.append("2xx responses: " + _statsHandler.getResponses2xx()).append("<br />\n");
202 sb.append("3xx responses: " + _statsHandler.getResponses3xx()).append("<br />\n");
203 sb.append("4xx responses: " + _statsHandler.getResponses4xx()).append("<br />\n");
204 sb.append("5xx responses: " + _statsHandler.getResponses5xx()).append("<br />\n");
205 sb.append("Bytes sent total: " + _statsHandler.getResponsesBytesTotal()).append("<br />\n");
206
207 sb.append("<h2>Connections:</h2>\n");
208 for (Connector connector : _connectors)
209 {
210 sb.append("<h3>" + connector.getName() + "</h3>");
211
212 if (connector.getStatsOn())
213 {
214 sb.append("Statistics gathering started " + connector.getStatsOnMs() + "ms ago").append("<br />\n");
215 sb.append("Total connections: " + connector.getConnections()).append("<br />\n");
216 sb.append("Current connections open: " + connector.getConnectionsOpen());
217 sb.append("Min concurrent connections open: " + connector.getConnectionsOpenMin()).append("<br />\n");
218 sb.append("Max concurrent connections open: " + connector.getConnectionsOpenMax()).append("<br />\n");
219 sb.append("Total connections duration: " + connector.getConnectionsDurationTotal()).append("<br />\n");
220 sb.append("Average connection duration: " + connector.getConnectionsDurationAve()).append("<br />\n");
221 sb.append("Min connection duration: " + connector.getConnectionsDurationMin()).append("<br />\n");
222 sb.append("Max connection duration: " + connector.getConnectionsDurationMax()).append("<br />\n");
223 sb.append("Total requests: " + connector.getRequests()).append("<br />\n");
224 sb.append("Average requests per connection: " + connector.getConnectionsRequestsAve()).append("<br />\n");
225 sb.append("Min requests per connection: " + connector.getConnectionsRequestsMin()).append("<br />\n");
226 sb.append("Max requests per connection: " + connector.getConnectionsRequestsMax()).append("<br />\n");
227 }
228 else
229 {
230 sb.append("Statistics gathering off.\n");
231 }
232
233 }
234
235 sb.append("<h2>Memory:</h2>\n");
236 sb.append("Heap memory usage: " + _memoryBean.getHeapMemoryUsage().getUsed() + " bytes").append("<br />\n");
237 sb.append("Non-heap memory usage: " + _memoryBean.getNonHeapMemoryUsage().getUsed() + " bytes").append("<br />\n");
238
239 response.setContentType("text/html");
240 PrintWriter pout = null;
241 pout = response.getWriter();
242 pout.write(sb.toString());
243
244 }
245 }