/*
* 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.isis.viewer.scimpi.dispatcher;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.PrintWriter;
import java.util.List;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.apache.isis.core.commons.config.ConfigurationConstants;
import org.apache.isis.core.commons.debug.DebugBuilder;
import org.apache.isis.core.commons.debug.DebugHtmlString;
import org.apache.isis.core.commons.debug.DebugString;
import org.apache.isis.core.commons.debug.DebugTee;
import org.apache.isis.core.runtime.system.context.IsisContext;
import org.apache.isis.viewer.scimpi.dispatcher.context.RequestContext;
import org.apache.isis.viewer.scimpi.dispatcher.debug.DebugHtmlWriter;
public class ErrorCollator {
private static final Logger LOG = LoggerFactory.getLogger(ErrorCollator.class);
private String errorRef;
private String message;
private final DebugString debugText = new DebugString();
private final DebugHtmlString debugHtml = new DebugHtmlString();
private final DebugBuilder debug = new DebugTee(debugText, debugHtml);
public void missingFile(String message) {
this.message = message;
}
public void message(final Throwable exception) {
LOG.debug(exception.getMessage(), exception);
message = exception.getMessage();
debug.appendPreformatted(message);
}
public void exception(final Throwable exception) {
String messageText = exception.getMessage();
LOG.debug(messageText, exception);
try {
debug.startSection("Exception");
debug.appendException(exception);
debug.endSection();
} catch (final RuntimeException e) {
debug.appendln("NOTE - an exception occurred while dumping an exception!");
debug.appendException(e);
}
message = messageText == null ? exception.getClass().getName() : messageText;
}
public DebugBuilder getDebug() {
return debug;
}
public void compileError(final RequestContext requestContext) {
errorRef = Long.toString(System.currentTimeMillis(), 36).toUpperCase();
LOG.info("error " + errorRef);
captureWarningsAndMessages();
dumpDebugDetails(requestContext);
writeErrorFile();
}
private void captureWarningsAndMessages() {
// Capture warnings/messages
if (IsisContext.getCurrentTransaction() != null) {
final List<String> messages = IsisContext.getMessageBroker().getMessages();
final List<String> warnings = IsisContext.getMessageBroker().getWarnings();
if (messages.size() > 0 || messages.size() > 0) {
debug.startSection("Warnings/Messages");
for (final String message : messages) {
debug.appendln("message", message);
}
for (final String message : warnings) {
debug.appendln("warning", message);
}
}
}
}
private void dumpDebugDetails(final RequestContext requestContext) {
// Dump page debug details
requestContext.append(debug);
debug.startSection("Processing Trace");
debug.appendPreformatted(requestContext.getDebugTrace());
debug.endSection();
debug.close();
}
private void writeErrorFile() {
LOG.error(message + "\n" + debugText.toString());
PrintWriter writer;
try {
final String directory =
IsisContext.getConfiguration().getString(ConfigurationConstants.ROOT + "scimpi.error-snapshots", ".");
File dir = new File(directory);
if (!dir.exists()) {
dir.mkdirs();
}
writer = new PrintWriter(new File(dir, "error_" + errorRef + ".html"));
final DebugHtmlWriter writer2 = new DebugHtmlWriter(writer, true);
writer2.concat(debugHtml);
writer2.close();
writer.close();
} catch (final FileNotFoundException e) {
LOG.error("Failed to archive error page", e);
}
}
public String getReference() {
return errorRef;
}
public String getDetails() {
return debugHtml.toString();
}
public String getMessage() {
return message;
}
}