/**
* Licensed to jclouds, Inc. (jclouds) under one or more
* contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. jclouds 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.jclouds.aws.ec2.xml;
import static org.jclouds.util.SaxUtils.equalsOrSuffix;
import java.util.Set;
import javax.inject.Inject;
import org.jclouds.date.DateCodecFactory;
import org.jclouds.ec2.domain.Reservation;
import org.jclouds.ec2.domain.RunningInstance;
import org.jclouds.ec2.xml.TagSetHandler;
import org.jclouds.location.Region;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import com.google.common.base.Supplier;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.ImmutableSet.Builder;
/**
* Parses the following XML document:
* <p/>
* DescribeImagesResponse xmlns="http:
*
* @author Adrian Cole
* @see <a href="http: />
*/
public class AWSDescribeInstancesResponseHandler extends
BaseAWSReservationHandler<Set<Reservation<? extends RunningInstance>>> {
private final TagSetHandler tagSetHandler;
private Builder<Reservation<? extends RunningInstance>> reservations = ImmutableSet.<Reservation<? extends RunningInstance>>builder();
private boolean inTagSet;
@Inject
AWSDescribeInstancesResponseHandler(DateCodecFactory dateCodecFactory, @Region Supplier<String> defaultRegion,
TagSetHandler tagSetHandler) {
super(dateCodecFactory, defaultRegion);
this.tagSetHandler = tagSetHandler;
}
@Override
public void startElement(String uri, String name, String qName, Attributes attrs) throws SAXException {
super.startElement(uri, name, qName, attrs);
if (equalsOrSuffix(qName, "tagSet")) {
inTagSet = true;
}
if (inTagSet) {
tagSetHandler.startElement(uri, name, qName, attrs);
}
}
@Override
public void characters(char ch[], int start, int length) {
if (inTagSet) {
tagSetHandler.characters(ch, start, length);
} else {
super.characters(ch, start, length);
}
}
@Override
public void endElement(String uri, String name, String qName) {
if (equalsOrSuffix(qName, "tagSet")) {
inTagSet = false;
builder.tags(tagSetHandler.getResult());
} else if (inTagSet) {
tagSetHandler.endElement(uri, name, qName);
}
super.endElement(uri, name, qName);
}
@Override
public Set<Reservation<? extends RunningInstance>> getResult() {
return reservations.build();
}
protected boolean endOfReservationItem() {
return itemDepth == 1;
}
@Override
protected void inItem() {
if (endOfReservationItem()) {
reservations.add(super.newReservation());
} else {
super.inItem();
}
}
protected boolean endOfInstanceItem() {
return itemDepth == 2 && inInstancesSet;
}
}