/*****************************************************************************
* Copyright (c) 2008 g-Eclipse Consortium
* 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
*
* Initial development of the original code was made for the
* g-Eclipse project founded by European Union
* project number: FP6-IST-034327 http://www.geclipse.eu/
*
* Contributors:
* Moritz Post - initial API and implementation
*****************************************************************************/
package eu.geclipse.aws.ec2.op;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import com.xerox.amazonws.ec2.AvailabilityZone;
import eu.geclipse.aws.ec2.EC2;
import eu.geclipse.aws.ec2.IEC2;
/**
* This {@link IOperation} uses the {@link EC2} to interface with the Amazon
* Webservices. It fetches all availability zones specified by name or if no
* zone name is given, every zone which can be found.
*
* @author Moritz Post
*/
public class EC2OpDescribeAvailabilityZones implements IOperation {
/** The {@link IEC2} to obtain data from. */
private final IEC2 ec2Service;
/** The list of availability zones. */
private List<String> availabilityZonesList;
/** The resulting list of {@link AvailabilityZone}s. */
private List<AvailabilityZone> result;
/** Any exception which came up during the inquiry. */
private Exception exception;
/**
* Creates a new {@link EC2OpDescribeAvailabilityZones} with no particular
* zone to query for.
*
* @param ec2Service the {@link IEC2} to obtain data from
*/
public EC2OpDescribeAvailabilityZones( final IEC2 ec2Service ) {
this.ec2Service = ec2Service;
this.availabilityZonesList = new ArrayList<String>();
}
/**
* Creates a new {@link EC2OpDescribeAvailabilityZones} with the given
* availability zones as parameter. Convenience method for
* {@link EC2OpDescribeAvailabilityZones#EC2OpDescribeAvailabilityZones(IEC2, List)}.
*
* @param availabilityZonesArray the list of groups to fetch
* @param ec2Service the {@link IEC2} to obtain data from
*/
public EC2OpDescribeAvailabilityZones( final IEC2 ec2Service,
final String[] availabilityZonesArray )
{
this.ec2Service = ec2Service;
this.availabilityZonesList = Arrays.asList( availabilityZonesArray );
}
/**
* Creates a new {@link EC2OpDescribeAvailabilityZones} with the given
* availability zones as parameter.
*
* @param availabilityZonesList the list of zones to fetch
* @param ec2Service the {@link IEC2} to obtain data from
*/
public EC2OpDescribeAvailabilityZones( final IEC2 ec2Service,
final List<String> availabilityZonesList )
{
this.ec2Service = ec2Service;
this.availabilityZonesList = availabilityZonesList;
}
public void run() {
this.result = null;
this.exception = null;
try {
this.result = this.ec2Service.describeAvailabilityZones( this.availabilityZonesList );
} catch( Exception ex ) {
this.exception = ex;
}
}
public List<AvailabilityZone> getResult() {
return this.result;
}
public Exception getException() {
return this.exception;
}
}