org.jclouds.aws.ec2.xml.SnapshotHandler Maven / Gradle / Ivy

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/**
 *
 * Copyright (C) 2010 Cloud Conscious, LLC. 
 *
 * ====================================================================
 * Licensed 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 java.util.Date;

import javax.inject.Inject;

import org.jclouds.aws.Region;
import org.jclouds.aws.ec2.domain.Snapshot;
import org.jclouds.aws.ec2.domain.Snapshot.Status;
import org.jclouds.aws.ec2.util.EC2Utils;
import org.jclouds.date.DateService;
import org.jclouds.http.functions.ParseSax;

/**
 * 
 * @author Adrian Cole
 */
public class SnapshotHandler extends ParseSax.HandlerForGeneratedRequestWithResult {
   private StringBuilder currentText = new StringBuilder();

   protected final DateService dateService;
   protected final String defaultRegion;

   private String id;
   private String volumeId;
   private int volumeSize;
   private Status status;
   private Date startTime;
   private int progress;
   private String ownerId;
   private String description;
   private String ownerAlias;

   @Inject
   public SnapshotHandler(DateService dateService, @Region String defaultRegion) {
      this.dateService = dateService;
      this.defaultRegion = defaultRegion;
   }

   public Snapshot getResult() {
      String region = EC2Utils.findRegionInArgsOrNull(getRequest());
      if (region == null)
         region = defaultRegion;
      Snapshot snapshot = new Snapshot(region, id, volumeId, volumeSize, status, startTime,
               progress, ownerId, description, ownerAlias);
      this.id = null;
      this.volumeId = null;
      this.volumeSize = 0;
      this.status = null;
      this.startTime = null;
      this.progress = 0;
      this.ownerId = null;
      this.description = null;
      this.ownerAlias = null;
      return snapshot;
   }

   public void endElement(String uri, String name, String qName) {
      if (qName.equals("snapshotId")) {
         id = currentText.toString().trim();
      } else if (qName.equals("volumeId")) {
         volumeId = currentText.toString().trim();
      } else if (qName.equals("volumeSize")) {
         volumeSize = Integer.parseInt(currentText.toString().trim());
      } else if (qName.equals("status")) {
         status = Snapshot.Status.fromValue(currentText.toString().trim());
      } else if (qName.equals("startTime")) {
         startTime = dateService.iso8601DateParse(currentText.toString().trim());
      } else if (qName.equals("progress")) {
         String progressString = currentText.toString().trim();
         if (!progressString.equals("")) {
            progressString = progressString.substring(0, progressString.length() - 1);
            progress = Integer.parseInt(progressString);
         }
      } else if (qName.equals("ownerId")) {
         ownerId = currentText.toString().trim();
      } else if (qName.equals("description")) {
         description = currentText.toString().trim();
      } else if (qName.equals("ownerAlias")) {
         ownerAlias = currentText.toString().trim();
      }
      currentText = new StringBuilder();
   }

   public void characters(char ch[], int start, int length) {
      currentText.append(ch, start, length);
   }
}