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1
16 package org.apache.cocoon.generation;
17
18 import org.apache.avalon.framework.configuration.Configurable;
19 import org.apache.avalon.framework.configuration.Configuration;
20 import org.apache.avalon.framework.configuration.ConfigurationException;
21 import org.apache.avalon.framework.context.Context;
22 import org.apache.avalon.framework.context.ContextException;
23 import org.apache.avalon.framework.context.Contextualizable;
24 import org.apache.avalon.framework.parameters.Parameters;
25 import org.apache.avalon.framework.service.ServiceException;
26 import org.apache.avalon.framework.service.ServiceManager;
27
28 import org.apache.cocoon.Constants;
29 import org.apache.cocoon.ProcessingException;
30 import org.apache.cocoon.ResourceNotFoundException;
31 import org.apache.cocoon.components.source.SourceUtil;
32 import org.apache.cocoon.environment.SourceResolver;
33 import org.apache.cocoon.xml.AttributesImpl;
34 import org.apache.cocoon.xml.XMLUtils;
35
36 import org.apache.commons.lang.SystemUtils;
37 import org.apache.excalibur.source.Source;
38 import org.apache.excalibur.source.SourceException;
39 import org.apache.excalibur.source.TraversableSource;
40 import org.apache.excalibur.store.Store;
41 import org.apache.excalibur.store.StoreJanitor;
42 import org.xml.sax.Attributes  ;
43 import org.xml.sax.SAXException ;
44
45 import java.io.File ;
46 import java.io.IOException ;
47 import java.net.InetAddress ;
48 import java.net.UnknownHostException ;
49 import java.text.DateFormat ;
50 import java.util.ArrayList ;
51 import java.util.Collection ;
52 import java.util.Date ;
53 import java.util.Enumeration ;
54 import java.util.Iterator ;
55 import java.util.List ;
56 import java.util.Map ;
57 import java.util.Properties ;
58 import java.util.Set ;
59 import java.util.StringTokenizer ;
60 import java.util.TreeSet ;
61
62
102 public class StatusGenerator extends ServiceableGenerator
103 implements Contextualizable, Configurable {
104
105
108 public static final String NAMESPACE = "http://apache.org/cocoon/status/2.0";
109
110
113 protected static final String XLINK_NS = "http://www.w3.org/1999/xlink";
114
115
118 protected static final String XLINK_PREFIX = "xlink";
119
120
123 protected Context context;
124
125
128 protected StoreJanitor storeJanitor;
129
130
133 protected Store storePersistent;
134
135
138 private boolean showLibrary;
139
140
143 private Source libDirectory;
144
145
146 public void contextualize(Context context) throws ContextException {
147 this.context = context;
148 }
149
150 public void configure(Configuration configuration) throws ConfigurationException {
151 this.showLibrary = configuration.getChild("show-libraries").getValueAsBoolean(true);
152 }
153
154
159 public void service(ServiceManager manager) throws ServiceException {
160 super.service(manager);
161
162 if (this.manager.hasService(StoreJanitor.ROLE)) {
163 this.storeJanitor = (StoreJanitor) manager.lookup(StoreJanitor.ROLE);
164 } else {
165 getLogger().info("StoreJanitor is not available. Sorry, no cache statistics");
166 }
167
168 if (this.manager.hasService(Store.PERSISTENT_STORE)) {
169 this.storePersistent = (Store) this.manager.lookup(Store.PERSISTENT_STORE);
170 } else {
171 getLogger().info("Persistent Store is not available. Sorry no cache statistics about it.");
172 }
173 }
174
175 public void setup(SourceResolver resolver, Map objectModel, String src, Parameters par)
176 throws ProcessingException, SAXException , IOException {
177 super.setup(resolver, objectModel, src, par);
178
179 if (this.showLibrary) {
180 try {
181 this.libDirectory = super.resolver.resolveURI("context://WEB-INF/lib");
182 } catch (SourceException e) {
183 throw SourceUtil.handle(e);
184 }
185 }
186 }
187
188
191 public void dispose() {
192 if (this.manager != null) {
193 this.manager.release(this.storePersistent);
194 this.manager.release(this.storeJanitor);
195 this.storePersistent = null;
196 this.storeJanitor = null;
197 }
198
199 if (this.libDirectory != null) {
200 super.resolver.release(this.libDirectory);
201 this.libDirectory = null;
202 }
203
204 super.dispose();
205 }
206
207
212 public void generate() throws SAXException , ProcessingException {
213
214 super.contentHandler.startDocument();
216 super.contentHandler.startPrefixMapping("", NAMESPACE);
217 super.contentHandler.startPrefixMapping(XLINK_PREFIX, XLINK_NS);
218
219 genStatus();
220
221 super.contentHandler.endPrefixMapping(XLINK_PREFIX);
223 super.contentHandler.endPrefixMapping("");
224 super.contentHandler.endDocument();
225 }
226
227
230 private void genStatus() throws SAXException , ProcessingException {
231
233 String dateTime = DateFormat.getDateTimeInstance().format(new Date ());
235 String localHost;
236
237 try {
239 localHost = InetAddress.getLocalHost().getHostName();
240 } catch (UnknownHostException e) {
241 getLogger().debug("StatusGenerator:UnknownHost", e);
242 localHost = "";
243 } catch (SecurityException e) {
244 getLogger().debug("StatusGenerator:Security", e);
245 localHost = "";
246 }
247
248 AttributesImpl atts = new AttributesImpl();
249 atts.addCDATAAttribute(NAMESPACE, "date", dateTime);
250 atts.addCDATAAttribute(NAMESPACE, "host", localHost);
251 atts.addCDATAAttribute(NAMESPACE, "cocoon-version", Constants.VERSION);
252 super.contentHandler.startElement(NAMESPACE, "statusinfo", "statusinfo", atts);
253
254 genVMStatus();
255 genProperties();
256 if (this.showLibrary) {
257 genLibrarylist();
258 }
259
260 super.contentHandler.endElement(NAMESPACE, "statusinfo", "statusinfo");
262 }
263
264 private void genVMStatus() throws SAXException {
265 AttributesImpl atts = new AttributesImpl();
266 startGroup("VM");
267
268 String classpath = SystemUtils.JAVA_CLASS_PATH;
270 if (classpath != null) {
271 List paths = new ArrayList ();
272 StringTokenizer tokenizer = new StringTokenizer (classpath, SystemUtils.PATH_SEPARATOR);
273 while (tokenizer.hasMoreTokens()) {
274 paths.add(tokenizer.nextToken());
275 }
276 addMultilineValue("classpath", paths);
277 }
278
280 String contextClassPath = null;
282 try {
283 contextClassPath = (String ) this.context.get(Constants.CONTEXT_CLASSPATH);
284 } catch (ContextException e) {
285 }
287 if (contextClassPath != null) {
288 List paths = new ArrayList ();
289 StringTokenizer tokenizer = new StringTokenizer (contextClassPath, File.pathSeparator);
290 while (tokenizer.hasMoreTokens()) {
291 paths.add(tokenizer.nextToken());
292 }
293 addMultilineValue("context-classpath", paths);
294 }
295
297 startGroup("Memory");
299 final long totalMemory = Runtime.getRuntime().totalMemory();
300 final long freeMemory = Runtime.getRuntime().freeMemory();
301 addValue("total", String.valueOf(totalMemory));
302 addValue("used", String.valueOf(totalMemory - freeMemory));
303 addValue("free", String.valueOf(freeMemory));
304 endGroup();
305
307 startGroup("JRE");
309 addValue("version", SystemUtils.JAVA_VERSION);
310 atts.clear();
311 atts.addAttribute(XLINK_NS, "type", XLINK_PREFIX + ":type", "CDATA", "simple");
313 atts.addAttribute(XLINK_NS, "href", XLINK_PREFIX + ":href", "CDATA", SystemUtils.JAVA_VENDOR_URL);
314 addValue("java-vendor", SystemUtils.JAVA_VENDOR, atts);
315 endGroup();
316
318 startGroup("Operating System");
320 addValue("name", SystemUtils.OS_NAME);
321 addValue("architecture", SystemUtils.OS_ARCH);
322 addValue("version", SystemUtils.OS_VERSION);
323 endGroup();
324
326 if (this.storeJanitor != null) {
328 startGroup("Store Janitor");
329
330 Iterator i = this.storeJanitor.iterator();
332 while (i.hasNext()) {
333 Store store = (Store) i.next();
334 startGroup(store.getClass().getName() + " (hash = 0x" + Integer.toHexString(store.hashCode()) + ")");
335 int size = 0;
336 int empty = 0;
337 atts.clear();
338 atts.addAttribute(NAMESPACE, "name", "name", "CDATA", "cached");
339 super.contentHandler.startElement(NAMESPACE, "value", "value", atts);
340
341 atts.clear();
342 Enumeration e = store.keys();
343 while (e.hasMoreElements()) {
344 size++;
345 Object key = e.nextElement();
346 Object val = store.get(key);
347 String line;
348 if (val == null) {
349 empty++;
350 } else {
351 line = key + " (class: " + val.getClass().getName() + ")";
352 super.contentHandler.startElement(NAMESPACE, "line", "line", atts);
353 super.contentHandler.characters(line.toCharArray(), 0, line.length());
354 super.contentHandler.endElement(NAMESPACE, "line", "line");
355 }
356 }
357 if (size == 0) {
358 super.contentHandler.startElement(NAMESPACE, "line", "line", atts);
359 String value = "[empty]";
360 super.contentHandler.characters(value.toCharArray(), 0, value.length());
361 super.contentHandler.endElement(NAMESPACE, "line", "line");
362 }
363 super.contentHandler.endElement(NAMESPACE, "value", "value");
364
365 addValue("size", String.valueOf(size) + " items in cache (" + empty + " are empty)");
366 endGroup();
367 }
368 endGroup();
369 }
370
371 if (this.storePersistent != null) {
372 startGroup(storePersistent.getClass().getName() + " (hash = 0x" + Integer.toHexString(storePersistent.hashCode()) + ")");
373 int size = 0;
374 int empty = 0;
375 atts.clear();
376 atts.addAttribute(NAMESPACE, "name", "name", "CDATA", "cached");
377 super.contentHandler.startElement(NAMESPACE, "value", "value", atts);
378
379 atts.clear();
380 Enumeration e = this.storePersistent.keys();
381 while (e.hasMoreElements()) {
382 size++;
383 Object key = e.nextElement();
384 Object val = storePersistent.get(key);
385 String line;
386 if (val == null) {
387 empty++;
388 } else {
389 line = key + " (class: " + val.getClass().getName() + ")";
390 super.contentHandler.startElement(NAMESPACE, "line", "line", atts);
391 super.contentHandler.characters(line.toCharArray(), 0, line.length());
392 super.contentHandler.endElement(NAMESPACE, "line", "line");
393 }
394 }
395 if (size == 0) {
396 super.contentHandler.startElement(NAMESPACE, "line", "line", atts);
397 String value = "[empty]";
398 super.contentHandler.characters(value.toCharArray(), 0, value.length());
399 super.contentHandler.endElement(NAMESPACE, "line", "line");
400 }
401 super.contentHandler.endElement(NAMESPACE, "value", "value");
402
403 addValue("size", size + " items in cache (" + empty + " are empty)");
404 endGroup();
405 }
406
408 endGroup();
409 }
410
411 private void genProperties() throws SAXException {
412 this.startGroup("System-Properties");
413 final Properties p = System.getProperties();
414 final Enumeration e = p.keys();
415 while ( e.hasMoreElements() ) {
416 final String key = (String )e.nextElement();
417 final String value = p.getProperty(key);
418 this.addValue(key, value);
419 }
420 this.endGroup();
421 }
422
423 private void genLibrarylist() throws SAXException ,ProcessingException {
424 try {
425 if (this.libDirectory instanceof TraversableSource) {
426 startGroup("WEB-INF/lib");
427
428 Set files = new TreeSet ();
429 Collection kids = ((TraversableSource) this.libDirectory).getChildren();
430 try {
431 for (Iterator i = kids.iterator(); i.hasNext(); ) {
432 final Source lib = (Source) i.next();
433 final String name = lib.getURI().substring(lib.getURI().lastIndexOf('/'));
434 files.add(name);
435 }
436 } finally {
437 for (Iterator i = kids.iterator(); i.hasNext(); ) {
438 final Source lib = (Source) i.next();
439 super.resolver.release(lib);
440 }
441 }
442
443 for (Iterator i = files.iterator(); i.hasNext(); ) {
444 addValue("file", (String ) i.next());
445 }
446
447 endGroup();
448 }
449 } catch (SourceException e) {
450 throw new ResourceNotFoundException("Could not read directory", e);
451 }
452 }
453
454
455 private void startGroup(String name) throws SAXException {
456 startGroup(name, null);
457 }
458
459
460 private void startGroup(String name, Attributes atts)
461 throws SAXException {
462 AttributesImpl ai = (atts == null) ? new AttributesImpl() : new AttributesImpl(atts);
463 ai.addAttribute(NAMESPACE, "name", "name", "CDATA", name);
464 super.contentHandler.startElement(NAMESPACE, "group", "group", ai);
465 }
466
467
468 private void endGroup() throws SAXException {
469 super.contentHandler.endElement(NAMESPACE, "group", "group");
470 }
471
472
473 private void addValue(String name, String value)
474 throws SAXException {
475 addValue(name, value, null);
476 }
477
478
479 private void addValue(String name, String value, Attributes atts)
480 throws SAXException {
481 AttributesImpl ai = (atts == null) ? new AttributesImpl() : new AttributesImpl(atts);
482 ai.addAttribute(NAMESPACE, "name", "name", "CDATA", name);
483 super.contentHandler.startElement(NAMESPACE, "value", "value", ai);
484 super.contentHandler.startElement(NAMESPACE, "line", "line", XMLUtils.EMPTY_ATTRIBUTES);
485
486 if (value != null) {
487 super.contentHandler.characters(value.toCharArray(), 0, value.length());
488 }
489
490 super.contentHandler.endElement(NAMESPACE, "line", "line");
491 super.contentHandler.endElement(NAMESPACE, "value", "value");
492 }
493
494
495 private void addMultilineValue(String name, List values)
496 throws SAXException {
497 addMultilineValue(name, values, null);
498 }
499
500
501 private void addMultilineValue(String name, List values, Attributes atts)
502 throws SAXException {
503 AttributesImpl ai = (atts == null) ? new AttributesImpl() : new AttributesImpl(atts);
504 ai.addAttribute(NAMESPACE, "name", "name", "CDATA", name);
505 super.contentHandler.startElement(NAMESPACE, "value", "value", ai);
506
507 for (int i = 0; i < values.size(); i++) {
508 String value = (String ) values.get(i);
509 if (value != null) {
510 super.contentHandler.startElement(NAMESPACE, "line", "line", XMLUtils.EMPTY_ATTRIBUTES);
511 super.contentHandler.characters(value.toCharArray(), 0, value.length());
512 super.contentHandler.endElement(NAMESPACE, "line", "line");
513 }
514 }
515 super.contentHandler.endElement(NAMESPACE, "value", "value");
516 }
517 }
518 |
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