Example usage for com.amazonaws.services.ec2.model InstanceAttributeName BlockDeviceMapping

Introduction

In this page you can find the example usage for com.amazonaws.services.ec2.model InstanceAttributeName BlockDeviceMapping.

Prototype

InstanceAttributeName BlockDeviceMapping

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Usage

From source file:com.cloudera.director.aws.ec2.ebs.EBSAllocator.java

License:Apache License

/**
 * Adds a delete on termination flag to all volumes in an {@code InstanceEbsVolumes} list
 * that have the ATTACHED status. This makes sure that the volumes associated with the
 * instance will be automatically cleaned up upon instance termination.
 *
 * @param instanceEbsVolumesList list of instances along with their associated volumes
 *//*from  w  w  w .  j  a  va  2 s. c o m*/
public void addDeleteOnTerminationFlag(List<InstanceEbsVolumes> instanceEbsVolumesList) {
    Set<String> volumesToFlag = getAllVolumeIdsWithStatus(instanceEbsVolumesList,
            InstanceEbsVolumes.Status.ATTACHED);

    if (!volumesToFlag.isEmpty()) {
        for (InstanceEbsVolumes instanceEbsVolumes : instanceEbsVolumesList) {
            String ec2InstanceId = instanceEbsVolumes.getEc2InstanceId();

            DescribeInstanceAttributeRequest instanceAttributeRequest = new DescribeInstanceAttributeRequest()
                    .withAttribute(InstanceAttributeName.BlockDeviceMapping).withInstanceId(ec2InstanceId);

            List<InstanceBlockDeviceMapping> blockDeviceMappings = client
                    .describeInstanceAttribute(instanceAttributeRequest).getInstanceAttribute()
                    .getBlockDeviceMappings();

            for (InstanceBlockDeviceMapping blockDeviceMapping : blockDeviceMappings) {
                String volumeId = blockDeviceMapping.getEbs().getVolumeId();

                // The block device mapping may have volumes associated with it that were not
                // provisioned by us. We skip marking those volumes for deletion.

                if (!volumesToFlag.contains(volumeId)) {
                    continue;
                }

                InstanceBlockDeviceMappingSpecification updatedSpec = new InstanceBlockDeviceMappingSpecification()
                        .withEbs(new EbsInstanceBlockDeviceSpecification().withDeleteOnTermination(true)
                                .withVolumeId(volumeId))
                        .withDeviceName(blockDeviceMapping.getDeviceName());

                ModifyInstanceAttributeRequest modifyRequest = new ModifyInstanceAttributeRequest()
                        .withBlockDeviceMappings(updatedSpec).withInstanceId(ec2InstanceId);

                client.modifyInstanceAttribute(modifyRequest);
            }
        }
    }
}

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From source file:com.cloudera.director.aws.ec2.EC2Provider.java

License:Apache License

/**
 * Get EBS volumes attached to the specified virtual instance id.
 *
 * @return list of ebs volumes//ww w.  j  av a  2 s . c  om
 */
@VisibleForTesting
List<Volume> getVolumes(String virtualInstanceId) {
    String ec2InstanceId = getOnlyElement(
            getEC2InstanceIdsByVirtualInstanceId(Collections.singletonList(virtualInstanceId)).values());

    DescribeInstanceAttributeResult results = client
            .describeInstanceAttribute(new DescribeInstanceAttributeRequest().withInstanceId(ec2InstanceId)
                    .withAttribute(InstanceAttributeName.BlockDeviceMapping));

    List<InstanceBlockDeviceMapping> blockDeviceMappings = results.getInstanceAttribute()
            .getBlockDeviceMappings();

    List<String> volumeIds = Lists.newArrayList();
    for (InstanceBlockDeviceMapping mapping : blockDeviceMappings) {
        volumeIds.add(mapping.getEbs().getVolumeId());
    }

    DescribeVolumesResult volumeResults = client
            .describeVolumes(new DescribeVolumesRequest().withVolumeIds(volumeIds));

    return volumeResults.getVolumes();
}

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