Example usage for com.amazonaws.services.ec2 AmazonEC2 describeInstances

Introduction

In this page you can find the example usage for com.amazonaws.services.ec2 AmazonEC2 describeInstances.

Prototype

DescribeInstancesResult describeInstances();

Source Link

Document

Simplified method form for invoking the DescribeInstances operation.

Usage

From source file:com.oracle.coherence.cloud.amazon.EC2AddressProvider.java

License:Open Source License

/**
 * Generates the WKA list using an AmazonEC2 client.
 * //from   w ww  . j  a v a2s  .c o m
 * @param ec2 the {@link AmazonEC2} client to use.
 * 
 * @return the WKA list
 */
protected List<InetSocketAddress> generateWKAList(AmazonEC2 ec2) {
    String portString = System.getProperty("tangosol.coherence.ec2addressprovider.port", "8088");
    int wkaPort = Integer.parseInt(portString);

    List<InetSocketAddress> resultList = new ArrayList<InetSocketAddress>();

    DescribeInstancesResult describeInstancesResult = ec2.describeInstances();
    List<Reservation> reservations = describeInstancesResult.getReservations();
    Set<Instance> instances = new HashSet<Instance>();

    for (Reservation reservation : reservations) {
        instances.addAll(reservation.getInstances());
        if (logger.isLoggable(Level.CONFIG)) {
            logger.log(Level.CONFIG, "Examining EC2 reservation:" + reservation);
        }
    }
    logAllInstances(instances);
    DescribeAddressesResult elasticAddressesResult = ec2.describeAddresses();

    if (elasticAddressesResult != null) {
        for (Iterator<Address> elasticAddressIter = elasticAddressesResult.getAddresses()
                .iterator(); elasticAddressIter.hasNext();) {
            Address elasticAddress = elasticAddressIter.next();

            for (Iterator<Instance> instIter = instances.iterator(); instIter.hasNext();) {
                Instance instance = instIter.next();

                if (instance.getInstanceId().equals(elasticAddress.getInstanceId())) {
                    //Now we have a match - add with default port
                    if (logger.isLoggable(Level.CONFIG)) {
                        logger.log(Level.CONFIG,
                                "EC2AddressProvider - adding {0} from instance {1} to WKA list",
                                new Object[] { instance.getPrivateIpAddress(), instance });
                    }
                    resultList.add(new InetSocketAddress(instance.getPrivateIpAddress(), wkaPort));
                }
            }
        }
        if (resultList.size() == 0) {
            throw new RuntimeException(
                    "The EC2AddressProvider could not find any instance mapped to an Elastic IP");
        }
    } else {
        throw new RuntimeException("The EC2AddressProvider could not enumerate the Elastic IP Addresses");
    }
    return resultList;
}

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From source file:edu.umass.cs.aws.support.AWSEC2.java

License:Apache License

/**
 * Describe Current Instances//from  ww  w . j  a  v  a  2  s  .  c  o  m
 *
 * @param ec2
 */
public static void describeInstances(AmazonEC2 ec2) {
    StringBuilder output = new StringBuilder();
    String prefix = currentTab + "Current Instances: ";
    DescribeInstancesResult describeInstancesResult = ec2.describeInstances();
    List<Reservation> reservations = describeInstancesResult.getReservations();
    Set<Instance> instances = new HashSet<Instance>();
    // add all instances to a Set.
    for (Reservation reservation : reservations) {
        instances.addAll(reservation.getInstances());
    }
    prefix = prefix.concat(" [" + instances.size() + " total] ");

    for (Instance ins : instances) {
        // instance state
        output.append(prefix);
        prefix = ", ";
        output.append(ins.getPublicDnsName());
        output.append(" (");
        output.append(ins.getInstanceId());
        output.append(") ");
        output.append(ins.getState().getName());
    }
    System.out.println(output);
}

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From source file:edu.umass.cs.aws.support.AWSEC2.java

License:Apache License

/**
 * Find an instance//  ww  w.  j a va2s  .c  o  m
 *
 * @param ec2
 * @param createdInstanceId
 * @return the name of the instance or null
 */
public static Instance findInstance(AmazonEC2 ec2, String createdInstanceId) {
    DescribeInstancesResult describeInstancesResult = ec2.describeInstances();
    List<Reservation> reservations = describeInstancesResult.getReservations();
    Set<Instance> instances = new HashSet<>();
    // add all instances to a Set.
    for (Reservation reservation : reservations) {
        instances.addAll(reservation.getInstances());
    }
    for (Instance instance : instances) {
        if (createdInstanceId.equals(instance.getInstanceId())) {
            return instance;
        }
    }
    return null;
}

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From source file:edu.umass.cs.aws.support.AWSEC2.java

License:Apache License

/**
 * Returns all the instances in this region.
 *
 * @param ec2/*w  ww  .  ja  v  a  2  s. c  o  m*/
 * @return a set of instance instances
 */
public static Set<Instance> getInstances(AmazonEC2 ec2) {
    Set<Instance> instances = new HashSet<>();
    DescribeInstancesResult describeInstancesResult = ec2.describeInstances();
    List<Reservation> reservations = describeInstancesResult.getReservations();

    // add all instances to a Set.
    for (Reservation reservation : reservations) {
        instances.addAll(reservation.getInstances());
    }
    return instances;
}

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From source file:org.ow2.petals.cloud.manager.ec2.commands.ListServersCommand.java

License:Open Source License

@Override
protected Object doExecute() throws Exception {
    AmazonEC2 client = getClient();
    System.out.println("Servers :");

    DescribeInstancesResult result = client.describeInstances();
    for (Reservation reservation : result.getReservations()) {
        for (Instance instance : reservation.getInstances()) {
            System.out.println(" - " + instance.toString());
        }//from  w w  w .ja  v a  2  s . c om
    }
    return null;
}

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