| /******************************************************************************* |
| * 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.olingo.odata2.core.debug; |
| |
| import java.io.IOException; |
| import java.io.Writer; |
| import java.util.Locale; |
| |
| import org.apache.olingo.odata2.api.exception.ODataMessageException; |
| import org.apache.olingo.odata2.core.ep.util.JsonStreamWriter; |
| import org.apache.olingo.odata2.core.exception.MessageService; |
| |
| /** |
| * Exception debug information. |
| */ |
| public class DebugInfoException implements DebugInfo { |
| |
| private final Exception exception; |
| private final Locale locale; |
| |
| public DebugInfoException(final Exception exception, final Locale locale) { |
| this.exception = exception; |
| this.locale = locale; |
| } |
| |
| @Override |
| public String getName() { |
| return "Stacktrace"; |
| } |
| |
| @Override |
| public void appendJson(final JsonStreamWriter jsonStreamWriter) throws IOException { |
| jsonStreamWriter.beginObject() |
| .name("exceptions") |
| .beginArray(); |
| Throwable throwable = exception; |
| while (throwable != null) { |
| jsonStreamWriter.beginObject() |
| .namedStringValueRaw("class", throwable.getClass().getCanonicalName()).separator() |
| .namedStringValue("message", getMessageText(throwable)) |
| .separator(); |
| |
| jsonStreamWriter.name("invocation"); |
| appendJsonStackTraceElement(jsonStreamWriter, throwable.getStackTrace()[0]); |
| |
| jsonStreamWriter.endObject(); |
| throwable = throwable.getCause(); |
| if (throwable != null) { |
| jsonStreamWriter.separator(); |
| } |
| } |
| jsonStreamWriter.endArray(); |
| jsonStreamWriter.separator(); |
| |
| jsonStreamWriter.name("stacktrace") |
| .beginArray(); |
| boolean first = true; |
| for (final StackTraceElement stackTraceElement : exception != null ? exception.getStackTrace() : null) { |
| if (!first) { |
| jsonStreamWriter.separator(); |
| } |
| first = false; |
| appendJsonStackTraceElement(jsonStreamWriter, stackTraceElement); |
| } |
| jsonStreamWriter.endArray(); |
| jsonStreamWriter.endObject(); |
| } |
| |
| private static void appendJsonStackTraceElement(final JsonStreamWriter jsonStreamWriter, |
| final StackTraceElement stackTraceElement) throws IOException { |
| jsonStreamWriter.beginObject() |
| .namedStringValueRaw("class", stackTraceElement.getClassName()).separator() |
| .namedStringValueRaw("method", stackTraceElement.getMethodName()).separator() |
| .name("line").unquotedValue(Integer.toString(stackTraceElement.getLineNumber())) |
| .endObject(); |
| } |
| |
| @Override |
| public void appendHtml(final Writer writer) throws IOException { |
| appendException(exception, writer); |
| writer.append("<h2>Stacktrace</h2>\n"); |
| int count = 0; |
| for (final StackTraceElement stackTraceElement : exception.getStackTrace()) { |
| appendStackTraceElement(stackTraceElement, ++count == 1, count == exception.getStackTrace().length, writer); |
| } |
| } |
| |
| private void appendException(final Throwable throwable, final Writer writer) throws IOException { |
| if (throwable.getCause() != null) { |
| appendException(throwable.getCause(), writer); |
| } |
| final StackTraceElement details = throwable.getStackTrace()[0]; |
| writer.append("<h2>").append(throwable.getClass().getCanonicalName()).append("</h2>\n") |
| .append("<p>") |
| .append(ODataDebugResponseWrapper.escapeHtml(getMessageText(throwable))) |
| .append("</p>\n"); |
| appendStackTraceElement(details, true, true, writer); |
| } |
| |
| private void appendStackTraceElement(final StackTraceElement stackTraceElement, |
| final boolean isFirst, final boolean isLast, final Writer writer) throws IOException { |
| if (isFirst) { |
| writer.append("<table>\n<thead>\n") |
| .append("<tr>\n<th class=\"name\">Class</th>\n") |
| .append("<th class=\"name\">Method</th>\n") |
| .append("<th class=\"value\">Line number in class</th>\n</tr>\n") |
| .append("</thead>\n<tbody>\n"); |
| } |
| writer.append("<tr>\n<td class=\"name\">").append(stackTraceElement.getClassName()).append("</td>\n") |
| .append("<td class=\"name\">").append(stackTraceElement.getMethodName()).append("</td>\n") |
| .append("<td class=\"value\">").append(Integer.toString(stackTraceElement.getLineNumber())) |
| .append("</td>\n</tr>\n"); |
| if (isLast) { |
| writer.append("</tbody>\n</table>\n"); |
| } |
| } |
| |
| private String getMessageText(final Throwable throwable) { |
| return throwable instanceof ODataMessageException ? |
| MessageService.getMessage(locale, ((ODataMessageException) throwable).getMessageReference()).getText() : |
| throwable.getLocalizedMessage() == null ? "Exception text missing" : throwable.getLocalizedMessage(); |
| } |
| } |