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16 package org.outerj.daisy.frontend;
17
18 import org.apache.cocoon.generation.Generator;
19 import org.apache.cocoon.ProcessingException;
20 import org.apache.cocoon.util.location.LocationUtils;
21 import org.apache.cocoon.util.location.LocatableException;
22 import org.apache.cocoon.util.location.MultiLocatable;
23 import org.apache.cocoon.util.location.Location;
24 import org.apache.cocoon.environment.SourceResolver;
25 import org.apache.cocoon.environment.ObjectModelHelper;
26 import org.apache.cocoon.environment.Request;
27 import org.apache.cocoon.xml.XMLConsumer;
28 import org.apache.cocoon.xml.AttributesImpl;
29 import org.apache.cocoon.xml.SaxBuffer;
30 import org.apache.avalon.framework.parameters.Parameters;
31 import org.apache.avalon.framework.service.Serviceable;
32 import org.apache.avalon.framework.service.ServiceManager;
33 import org.apache.avalon.framework.service.ServiceException;
34 import org.apache.avalon.framework.context.Contextualizable;
35 import org.apache.avalon.framework.context.Context;
36 import org.apache.avalon.framework.context.ContextException;
37 import org.apache.commons.lang.exception.ExceptionUtils;
38 import org.xml.sax.SAXException  ;
39 import org.xml.sax.ContentHandler ;
40 import org.outerj.daisy.repository.clientimpl.infrastructure.DaisyPropagatedException;
41 import org.outerj.daisy.repository.clientimpl.infrastructure.MyStackTraceElement;
42 import org.outerj.daisy.repository.Repository;
43 import org.outerj.daisy.repository.LocalizedException;
44 import org.outerj.daisy.frontend.components.siteconf.SiteConf;
45
46 import java.io.IOException ;
47 import java.util.Map ;
48 import java.util.Locale ;
49 import java.util.List ;
50
51 public class ErrorGenerator implements Generator, Serviceable, Contextualizable {
52 private Throwable throwable;
53 private XMLConsumer consumer;
54 private String mountPoint;
55 private SiteConf siteConf;
56 private String layoutType;
57 private String skin;
58 private Repository repository;
59 private ServiceManager serviceManager;
60 private Context context;
61 private Locale locale;
62
63 public void service(ServiceManager serviceManager) throws ServiceException {
64 this.serviceManager = serviceManager;
65 }
66
67 public void contextualize(Context context) throws ContextException {
68 this.context = context;
69 }
70
71 public void setup(SourceResolver sourceResolver, Map objectModel, String s, Parameters parameters) throws ProcessingException, SAXException , IOException {
72 throwable = ObjectModelHelper.getThrowable(objectModel);
73 Request request = ObjectModelHelper.getRequest(objectModel);
74
75 mountPoint = (String )request.getAttribute("mountPoint");
76 siteConf = (SiteConf)request.getAttribute("siteConf");
77 skin = (String )request.getAttribute("skin");
78
79 try {
80 repository = WikiHelper.getRepository(request, serviceManager);
81 } catch (Exception e) {
82 }
84
85 if ("true".equals(request.getAttribute("smallErrorPage")))
86 layoutType = "plain";
87 else
88 layoutType = null;
89
90 locale = (Locale )request.getAttribute("locale");
91 if (locale == null)
92 locale = Locale.US;
93
94 if (throwable == null)
95 throw new ProcessingException("No throwable found in object model.");
96 }
97
98 public void generate() throws IOException , SAXException , ProcessingException {
99 consumer.startDocument();
100 consumer.startElement("", "page", "page", new AttributesImpl());
101
102 if (siteConf != null)
103 new PageContext(mountPoint, siteConf, repository, layoutType, skin, context).toSAX(consumer);
104 else {
105 SaxBuffer skinConf = null;
106 try {
107 skinConf = SkinConfHelper.getGlobalSkinConf(serviceManager);
108 } catch (Exception e) {
109 }
111 new PageContext(mountPoint, repository, layoutType, skin, skinConf, context).toSAX(consumer);
112 }
113
114 consumer.startElement("", "error", "error", new AttributesImpl());
115
116 generateCocoonStacktrace();
120
121 consumer.startElement("", "exceptionChain", "exceptionChain", new AttributesImpl());
125
126 while (throwable != null) {
127 generateThrowable(throwable);
128 throwable = ExceptionUtils.getCause(throwable);
129 }
130
131 consumer.endElement("", "exceptionChain", "exceptionChain");
132 consumer.endElement("", "error", "error");
133 consumer.endElement("", "page", "page");
134 consumer.endDocument();
135 }
136
137 private void generateThrowable(Throwable throwable) throws SAXException {
138 if (throwable instanceof DaisyPropagatedException) {
139 DaisyPropagatedException dpe = (DaisyPropagatedException)throwable;
140 AttributesImpl attrs = new AttributesImpl();
141 attrs.addCDATAAttribute("message", String.valueOf(dpe.getUserMessage()));
142 attrs.addCDATAAttribute("class", dpe.getRemoteClassName());
143 consumer.startElement("", "throwable", "throwable", attrs);
144
145 AttributesImpl stackTraceAttrs = new AttributesImpl();
146 stackTraceAttrs.addCDATAAttribute("remote", "true");
147 consumer.startElement("", "stackTrace", "stackTrace", stackTraceAttrs);
148 MyStackTraceElement[] stacktrace = dpe.getRemoteStackTrace();
149 for (int i = 0; i < stacktrace.length; i++) {
150 AttributesImpl steAttrs = new AttributesImpl();
151 if (stacktrace[i].isNativeMethod())
152 steAttrs.addCDATAAttribute("nativeMethod", String.valueOf(stacktrace[i].isNativeMethod()));
153 steAttrs.addCDATAAttribute("className", stacktrace[i].getClassName());
154 steAttrs.addCDATAAttribute("fileName", stacktrace[i].getFileName());
155 steAttrs.addCDATAAttribute("lineNumber", String.valueOf(stacktrace[i].getLineNumber()));
156 steAttrs.addCDATAAttribute("methodName", String.valueOf(stacktrace[i].getMethodName()));
157 consumer.startElement("", "stackTraceElement", "stackTraceElement", steAttrs);
158 consumer.endElement("", "stackTraceElement", "stackTraceElement");
159 }
160 consumer.endElement("", "stackTrace", "stackTrace");
161
162 consumer.endElement("", "throwable", "throwable");
163 } else {
164 String message;
165 if (throwable instanceof LocalizedException)
166 message = ((LocalizedException)throwable).getMessage(locale);
167 else if (throwable instanceof LocatableException)
168 message = ((LocatableException)throwable).getRawMessage();
169 else
170 message = throwable.getMessage();
171 if (message == null)
172 message = "";
173
174 AttributesImpl attrs = new AttributesImpl();
175 attrs.addCDATAAttribute("message", message);
176 attrs.addCDATAAttribute("class", throwable.getClass().getName());
177 consumer.startElement("", "throwable", "throwable", attrs);
178
179 consumer.startElement("", "stackTrace", "stackTrace", new AttributesImpl());
180 StackTraceElement [] stacktrace = throwable.getStackTrace();
181 for (int i = 0; i < stacktrace.length; i++) {
182 AttributesImpl steAttrs = new AttributesImpl();
183 if (stacktrace[i].isNativeMethod())
184 steAttrs.addCDATAAttribute("nativeMethod", String.valueOf(stacktrace[i].isNativeMethod()));
185 steAttrs.addCDATAAttribute("className", stacktrace[i].getClassName());
186 steAttrs.addCDATAAttribute("fileName", stacktrace[i].getFileName());
187 steAttrs.addCDATAAttribute("lineNumber", String.valueOf(stacktrace[i].getLineNumber()));
188 steAttrs.addCDATAAttribute("methodName", String.valueOf(stacktrace[i].getMethodName()));
189 consumer.startElement("", "stackTraceElement", "stackTraceElement", steAttrs);
190 consumer.endElement("", "stackTraceElement", "stackTraceElement");
191 }
192 consumer.endElement("", "stackTrace", "stackTrace");
193
194 consumer.endElement("", "throwable", "throwable");
195 }
196
197 }
198
199 private void generateCocoonStacktrace() throws SAXException {
200 AttributesImpl attr = new AttributesImpl();
202 consumer.startElement("", "cocoonStackTrace", "cocoonStackTrace", attr);
203 Throwable current = throwable;
204 while (current != null) {
205 Location loc = LocationUtils.getLocation(current);
206 if (LocationUtils.isKnown(loc)) {
207 consumer.startElement("", "exception", "exception", attr);
209
210 String message = current instanceof LocatableException ? ((LocatableException)current).getRawMessage() : current.getMessage();
211 consumer.startElement("", "message", "message", new AttributesImpl());
212 consumer.characters(message.toCharArray(), 0, message.length());
213 consumer.endElement("", "message", "message");
214
215 attr.clear();
216 consumer.startElement("", "locations", "locations", attr);
217 dumpLocation(loc, attr);
218
219 if (current instanceof MultiLocatable) {
220 List locations = ((MultiLocatable)current).getLocations();
221 for (int i = 1; i < locations.size(); i++) { attr.clear();
223 dumpLocation((Location)locations.get(i), attr);
224 }
225 }
226 consumer.endElement("", "locations", "locations");
227 consumer.endElement("", "exception", "exception");
228 }
229
230
231 current = ExceptionUtils.getCause(current);
233 }
234
235 consumer.endElement("", "cocoonStackTrace", "cocoonStackTrace");
236 }
237
238 private void dumpLocation(Location loc, AttributesImpl attr) throws SAXException {
240 attr.addCDATAAttribute("uri", loc.getURI());
241 attr.addCDATAAttribute("line", Integer.toString(loc.getLineNumber()));
242 attr.addCDATAAttribute("column", Integer.toString(loc.getColumnNumber()));
243 consumer.startElement("", "location", "location", attr);
244 String description = loc.getDescription();
245 if (description != null)
246 consumer.characters(description.toCharArray(), 0, description.length());
247 consumer.endElement("", "location", "location");
248 }
249
250 public void setConsumer(XMLConsumer xmlConsumer) {
251 this.consumer = xmlConsumer;
252 }
253
254 }
255 |
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