org.glassfish.flashlight.xml.ProbeProviderStaxParser Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of payara-micro Show documentation
Show all versions of payara-micro Show documentation
Micro Distribution of the Payara Project
/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 2009-2013 Oracle and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
* or packager/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at packager/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* Oracle designates this particular file as subject to the "Classpath"
* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
* "Portions Copyright [year] [name of copyright owner]"
*
* Contributor(s):
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package org.glassfish.flashlight.xml;
import java.io.*;
import java.util.*;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.xml.stream.XMLStreamException;
import static org.glassfish.flashlight.xml.XmlConstants.*;
import org.glassfish.flashlight.FlashlightLoggerInfo;
import static org.glassfish.flashlight.FlashlightLoggerInfo.*;
import com.sun.enterprise.util.LocalStringManagerImpl;
import static javax.xml.stream.XMLStreamConstants.END_DOCUMENT;
/**
* Read the XML file, parse it and return a list of ProbeProvider objects
* @author bnevins
*/
public class ProbeProviderStaxParser extends StaxParser{
private static final Logger logger =
FlashlightLoggerInfo.getLogger();
public final static LocalStringManagerImpl localStrings =
new LocalStringManagerImpl(ProbeProviderStaxParser.class);
public ProbeProviderStaxParser(File f) throws XMLStreamException {
super(f);
}
public ProbeProviderStaxParser(InputStream in) throws XMLStreamException {
super(in);
}
public List getProviders() {
if(providers == null) {
try {
read();
}
catch(Exception ex) {
// normal
close();
}
}
if (providers.isEmpty()) {
// this line snatched from the previous implementation (DOM)
logger.log(Level.SEVERE, NO_PROVIDER_IDENTIFIED_FROM_XML);
}
return providers;
}
@Override
protected void read() throws XMLStreamException, EndDocumentException{
providers = new ArrayList();
// move past the root -- "probe-providers".
skipPast("probe-providers");
while(true) {
providers.add(parseProbeProvider());
}
}
private Provider parseProbeProvider() throws XMLStreamException {
if(!parser.getLocalName().equals(PROBE_PROVIDER)) {
String errStr = localStrings.getLocalString("invalidStartElement",
"START_ELEMENT is supposed to be {0}" +
", found: {1}", PROBE_PROVIDER, parser.getLocalName());
throw new XMLStreamException(errStr);
}
Map atts = parseAttributes();
List probes = parseProbes();
return new Provider(atts.get(MODULE_PROVIDER_NAME),
atts.get(MODULE_NAME),
atts.get(PROBE_PROVIDER_NAME),
atts.get(PROBE_PROVIDER_CLASS),
probes );
}
private List parseProbes() throws XMLStreamException {
List probes = new ArrayList();
boolean done = false;
// Prime the pump here, and advance to the next start. Note that further advances
// will be done as the elements within a probe are handled, not at this level.
try {
nextStart();
}
catch (EndDocumentException ex) {
// ignore -- this must be the last START_ELEMENT in the doc
// that's normal
done = true;
}
while(!done) {
// If we've been advanced to the end of the document, we' done...
if (parser.getEventType() == END_DOCUMENT)
break;
if(parser.getLocalName().equals(PROBE))
probes.add(parseProbe()); // Note that this will advance to the next probe if there is one
else
done = true; // Done at this level, bounce out.
}
return probes;
}
private XmlProbe parseProbe() throws XMLStreamException {
if(!parser.getLocalName().equals(PROBE)) {
String errStr = localStrings.getLocalString("invalidStartElement",
"START_ELEMENT is supposed to be {0}" +
", found: {1}", PROBE, parser.getLocalName());
throw new XMLStreamException(errStr);
}
// for some unknown reason method is an element not an attribute
// Solution -- use the last item if there are more than one
List params = new ArrayList();
Map atts = parseAttributes();
String method = null;
String name = atts.get(PROBE_NAME);
boolean self = Boolean.parseBoolean(atts.get(PROBE_SELF));
boolean hidden = Boolean.parseBoolean(atts.get(PROBE_HIDDEN));
boolean stateful = Boolean.parseBoolean(atts.get(PROBE_STATEFUL));
boolean statefulReturn = Boolean.parseBoolean(atts.get(PROBE_STATEFUL_RETURN));
boolean statefulException = Boolean.parseBoolean(atts.get(PROBE_STATEFUL_EXCEPTION));
String profileNames = atts.get(PROBE_PROFILE_NAMES);
boolean done = false;
while(!done) {
try {
nextStart();
String localName = parser.getLocalName();
if(localName.equals(METHOD))
method = parser.getElementText();
else if(localName.equals(PROBE_PARAM))
params.add(parseParam());
else
done = true;
}
catch (EndDocumentException ex) {
// ignore -- possibly normal -- but stop!
done = true;
}
}
return new XmlProbe(name, method, params, self, hidden, stateful, statefulReturn, statefulException, profileNames);
}
private XmlProbeParam parseParam() throws XMLStreamException {
if(!parser.getLocalName().equals(PROBE_PARAM)){
String errStr = localStrings.getLocalString("invalidStartElement",
"START_ELEMENT is supposed to be {0}" +
", found: {1}", PROBE_PARAM, parser.getLocalName());
throw new XMLStreamException(errStr);
}
Map atts = parseAttributes();
return new XmlProbeParam(atts.get(PROBE_PARAM_NAME), atts.get(PROBE_PARAM_TYPE));
}
private List providers = null;
}