Example usage for com.amazonaws.services.ec2 AmazonEC2Client describeSpotInstanceRequests

Introduction

In this page you can find the example usage for com.amazonaws.services.ec2 AmazonEC2Client describeSpotInstanceRequests.

Prototype

@Override
public DescribeSpotInstanceRequestsResult describeSpotInstanceRequests(
        DescribeSpotInstanceRequestsRequest request) 

Source Link

Document

Describes the specified Spot Instance requests.

Usage

From source file:n3phele.factory.ec2.VirtualServerResource.java

License:Open Source License

/**
 * Updates virtual server object and data store state
 * //  w w  w .  java 2  s .c  o m
 * @param item
 *            object to update
 * @param reference
 *            reference UUID used for notifications
 * @param sequence
 *            notification sequence number
 */

private void updateVirtualServer(VirtualServer item, UUID reference, int sequence)
        throws IllegalArgumentException {
    AmazonEC2Client client = null;
    client = getEC2Client(item.getAccessKey(), item.getEncryptedKey(), item.getLocation());
    String instanceId = item.getInstanceId();
    boolean madeIntoZombie = item.isZombie();
    if (!madeIntoZombie && (instanceId == null || instanceId.length() == 0)) {
        String spotId = item.getSpotId();
        if (spotId == null || spotId.length() == 0) {
            if ("Initializing".equals(item.getStatus())) {
                // Update has been called on an item under construction --
                // ignore
                log.warning("Ignoring partially formed item " + item.getUri());
                return;
            } else {
                log.severe("Improper item " + item);
            }
        }

        DescribeSpotInstanceRequestsResult update = null;
        try {
            update = client.describeSpotInstanceRequests(
                    new DescribeSpotInstanceRequestsRequest().withSpotInstanceRequestIds(spotId));
        } catch (AmazonServiceException e) {
            log.log(Level.WARNING, "EC2 error " + e.getErrorCode(), e);
            throw new WebApplicationException(e, Status.BAD_REQUEST);
        }
        instanceId = update.getSpotInstanceRequests().get(0).getInstanceId();
        item.setInstanceId(instanceId);
        //
        // After cleaning up an object, we leave it around with status ==
        // TERMINATED
        // for one refresh so that others can see the state chance via
        // polling.
        // If we come across an object with state terminated, and the
        // underlying object
        // is canceled or closed, then this is the second time the item has
        // been
        // refreshed, so now we remove the object.
        //
        if ((instanceId == null || instanceId.length() == 0) // pure spot
                // request
                && item.getStatus().equals(InstanceStateName.Terminated.toString())
                && (update.getSpotInstanceRequests().get(0).getState().equals("cancelled")
                        || update.getSpotInstanceRequests().get(0).getState().equals("closed"))) {
            delete(item);
            return;
        }

        updateStatus(item, update.getSpotInstanceRequests().get(0).getState(), reference, sequence);
        update(item);
        if (item.getStatus().equals("cancelled")) {
            log.warning("Spot Instance " + item.getUri() + " cancelled .. purging");
            try {
                deleteInstance(item, reference, sequence); // will set
                // object to
                // terminated
            } catch (Exception e) {
                log.log(Level.SEVERE, "Failed to clean up cancelled spot instance", e);
                updateStatus(item, InstanceStateName.Terminated.toString(), reference, sequence);
                delete(item);
                return;
            }

        }
        if (item.getStatus().equals("closed")
                && ((item.getInstanceId() == null) || (item.getInstanceId().length() == 0))) {
            log.warning("Spot Instance " + item.getUri() + " not fulfilled .. purging");
            updateStatus(item, InstanceStateName.Terminated.toString(), reference, sequence);
            delete(item);
            return;
        }

    }
    if (madeIntoZombie) {
        if (updateStatus(item, "terminated", reference, sequence))
            update(item);
        if (item.getStatus().equals("terminated")) {
            log.warning("Instance " + item.getName() + " terminated .. purging");
            delete(item);
            return;
        }

    } else if (instanceId != null && instanceId.length() > 0) {
        DescribeInstancesResult update = client
                .describeInstances(new DescribeInstancesRequest().withInstanceIds(item.getInstanceId()));
        if (update.getReservations() != null && update.getReservations().size() > 0) {
            Instance ec2Instance = update.getReservations().get(0).getInstances().get(0);
            String newStatus = ec2Instance.getState().getName();

            if (!item.getStatus().equals(InstanceStateName.Running.toString())
                    && InstanceStateName.Running.toString().equals(newStatus)) {
                item.setOutputParameters(Extractor.extract(ec2Instance));
                try {
                    client.createTags(new CreateTagsRequest().withResources(ec2Instance.getInstanceId())
                            .withTags(new Tag("Name", item.getName()),
                                    new Tag("n3phele-factory", Resource.get("factoryName", "ec2Factory")),
                                    new Tag("n3phele-uri", item.getUri().toString())));
                } catch (Exception ex) {
                    log.log(Level.WARNING, "Cant set tag for " + ec2Instance.getInstanceId()
                            + " associated with " + item.getName(), ex);
                }
            }

            if (updateStatus(item, newStatus, reference, sequence))
                update(item);
            if (item.getStatus().equals("terminated")) {
                log.warning("Instance " + ec2Instance.getInstanceId() + " terminated .. purging");
                delete(item);
                return;
            }
        } else {
            log.warning("Instance " + item.getInstanceId() + " not found, assumed terminated .. purging");
            updateStatus(item, InstanceStateName.Terminated.toString(), reference, sequence);
            delete(item);
            return;
        }
    }
}

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From source file:n3phele.factory.ec2.VirtualServerResource.java

License:Open Source License

private void cancelSpotVMRequest(VirtualServer item) throws Exception {
    String spotId = item.getSpotId();
    try {//from  w  ww . j av a 2 s .c  o m
        if (spotId != null && spotId.length() > 0) {
            AmazonEC2Client client = null;
            client = getEC2Client(item.getAccessKey(), item.getEncryptedKey(), item.getLocation());
            try {
                if (item.getInstanceId() == null || item.getInstanceId().length() == 0) {

                    DescribeSpotInstanceRequestsResult update = client.describeSpotInstanceRequests(
                            new DescribeSpotInstanceRequestsRequest().withSpotInstanceRequestIds(spotId));
                    String instanceId = update.getSpotInstanceRequests().get(0).getInstanceId();
                    item.setInstanceId(instanceId);
                    update(item);
                }
            } catch (Exception e) {
                log.log(Level.WARNING, "Spot request " + spotId + " update failed ", e);
            }

            CancelSpotInstanceRequestsRequest request = new CancelSpotInstanceRequestsRequest()
                    .withSpotInstanceRequestIds(spotId);
            CancelSpotInstanceRequestsResult result = client.cancelSpotInstanceRequests(request);
            log.info("Cancel spot request " + spotId + " status "
                    + result.getCancelledSpotInstanceRequests().get(0).getState().toString());
        }
    } catch (Exception e) {
        log.log(Level.SEVERE, "Cleanup delete of spot instance " + spotId, e);
        throw e;
    }

}

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