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/*******************************************************************************
* Copyright (c) 2004, 2007 Boeing.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Boeing - initial API and implementation
*******************************************************************************/
package org.eclipse.osee.framework.manager.servlet.ats;
import java.io.ByteArrayInputStream;
import java.io.InputStream;
import java.io.StringWriter;
import java.io.UnsupportedEncodingException;
import java.io.Writer;
import java.net.URLConnection;
import java.util.Collection;
import java.util.logging.Level;
import javax.servlet.http.HttpServletResponse;
import javax.xml.stream.XMLOutputFactory;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamWriter;
import org.eclipse.osee.framework.core.exception.OseeCoreException;
import org.eclipse.osee.framework.core.exception.OseeExceptions;
import org.eclipse.osee.framework.core.util.Conditions;
import org.eclipse.osee.framework.jdk.core.util.Lib;
import org.eclipse.osee.framework.logging.OseeLog;
import org.eclipse.osee.framework.manager.servlet.internal.Activator;
import org.eclipse.osee.framework.resource.management.IResource;
import org.eclipse.osee.framework.resource.management.util.Resource;
import org.w3c.dom.Node;
/**
* @author Roberto E. Escobar
*/
public class XmlMessage {
public XmlMessage() {
}
public void sendError(HttpServletResponse response, String name, Throwable ex) {
String errorMessage = Lib.exceptionToString(ex);
OseeLog.log(Activator.class, Level.SEVERE, errorMessage, ex);
try {
StringWriter writer = new StringWriter();
createXmlErrorMessage(writer, "0", errorMessage);
IResource resource = new StreamResource(name, writer.toString());
sendMessage(response, name, resource, false);
} catch (Throwable ex1) {
OseeLog.log(Activator.class, Level.SEVERE, ex1.toString(), ex1);
}
}
public void sendMessage(HttpServletResponse response, String name, String status, Collection<Node> nodes) {
try {
StringWriter writer = new StringWriter();
createXmlMessage(writer, "0", false, nodes);
IResource resource = new StreamResource(name, writer.toString());
sendMessage(response, name, resource, true);
} catch (Throwable ex) {
sendError(response, name, ex);
}
}
private void createXmlErrorMessage(Writer output, String status, String... messages) throws OseeCoreException {
createXmlMessage(output, status, true, null, messages);
}
private void createXmlMessage(Writer output, String status, boolean isError, Collection<Node> nodes, String... messages) throws OseeCoreException {
boolean hasNodes = nodes != null && !nodes.isEmpty();
boolean hasMessages = messages != null && messages.length > 0;
Conditions.checkExpressionFailOnTrue(hasMessages && hasNodes, "Cannot have messages and nodes");
XMLOutputFactory factory = XMLOutputFactory.newInstance();
try {
XMLStreamWriter writer = factory.createXMLStreamWriter(output);
writer.writeStartDocument("UTF-8", "1.0");
writer.writeStartElement("response");
writer.writeStartElement("status");
writer.writeCharacters(status);
writer.writeEndElement();
if (!isError) {
//TODO: update if we want to return a partial set
writer.writeStartElement("startRow");
writer.writeCharacters("0");
writer.writeEndElement();
//TODO: update if we want to return a partial set
writer.writeStartElement("endRow");
int size = 0;
if (hasNodes) {
size = nodes.size();
}
if (hasMessages) {
size = messages.length;
}
writer.writeCharacters(String.valueOf(size));
writer.writeEndElement();
writer.writeStartElement("totalRows");
writer.writeCharacters(String.valueOf(size));
writer.writeEndElement();
}
if (isError) {
writer.writeStartElement("errors");
} else {
writer.writeStartElement("data");
}
try {
if (hasNodes) {
XmlUtil.serialize(writer, nodes);
}
if (hasMessages) {
for (String message : messages) {
writer.writeStartElement("message");
writer.writeCharacters(message);
writer.writeEndElement();
}
}
} finally {
writer.writeEndElement();
}
writer.writeEndElement();
writer.writeEndDocument();
} catch (XMLStreamException ex) {
OseeExceptions.wrapAndThrow(ex);
}
}
public void sendMessage(HttpServletResponse response, String name, IResource resource, boolean isErrorSendingAllowed) {
InputStream inputStream = null;
try {
inputStream = resource.getContent();
response.setStatus(HttpServletResponse.SC_OK);
response.setContentLength(inputStream.available());
response.setCharacterEncoding("ISO-8859-1");
String mimeType = null;
if (name.endsWith("css")) {
mimeType = "text/css";
}
if (mimeType == null) {
mimeType = URLConnection.guessContentTypeFromStream(inputStream);
if (mimeType == null) {
mimeType = URLConnection.guessContentTypeFromName(resource.getLocation().toString());
if (mimeType == null) {
mimeType = "application/*";
}
}
}
response.setContentType(mimeType);
boolean isReportDoc = false;
try {
String location = resource.getLocation().toASCIIString();
isReportDoc = location.contains("changeReports");
} catch (Exception ex) {
// nothing here;
}
if (!mimeType.startsWith("text") && resource.isCompressed() || isReportDoc) {
response.setHeader("Content-Disposition", "attachment; filename=" + resource.getName());
}
Lib.inputStreamToOutputStream(inputStream, response.getOutputStream());
} catch (Exception ex) {
if (isErrorSendingAllowed) {
sendError(response, name, ex);
} else {
OseeLog.log(Activator.class, Level.SEVERE, ex);
}
} finally {
Lib.close(inputStream);
}
}
private final static class StreamResource extends Resource {
private final ByteArrayInputStream inputStream;
private final String name;
public StreamResource(String name, String data) throws UnsupportedEncodingException {
this(name, false, new ByteArrayInputStream(data.getBytes("ISO-8859-1")));
}
public StreamResource(String name, boolean isCompressed, ByteArrayInputStream inputStream) {
super(null, isCompressed);
this.name = name;
this.inputStream = inputStream;
}
@Override
public InputStream getContent() {
return inputStream;
}
@Override
public String getName() {
return name;
}
}
}
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