Example usage for com.amazonaws.services.ec2.model VolumeAttachmentState Attached

Introduction

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

Prototype

VolumeAttachmentState Attached

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Usage

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

License:Apache License

/**
 * Wait for the specified list of volumes to be attached within a timeout.
 *
 * @param volumeIds collection of volume ids to wait for
 * @return collection of volumes that were successfully attached
 * @throws InterruptedException if the operation is interrupted
 *///from www .j av a 2s  .  c o  m
private Collection<String> waitUntilVolumesAttached(Collection<String> volumeIds) throws InterruptedException {
    checkNotNull(volumeIds);
    if (volumeIds.isEmpty()) {
        LOG.info("No volumes are being attached, skipping wait");
        return Collections.emptySet();
    }

    Set<String> unattachedVolumes = Sets.newHashSet(volumeIds);
    Set<String> attachedVolumes = Sets.newHashSet();

    LOG.info("Waiting for a maximum of {} seconds for volumes to be attached", attachTimeoutSeconds);

    Stopwatch watch = Stopwatch.createStarted();
    while (watch.elapsed(TimeUnit.SECONDS) < attachTimeoutSeconds) {
        DescribeVolumesRequest volumeRequest = new DescribeVolumesRequest().withVolumeIds(unattachedVolumes);
        List<Volume> volumes = client.describeVolumes(volumeRequest).getVolumes();

        for (Volume volume : volumes) {
            VolumeAttachment attachment = Iterables.getOnlyElement(volume.getAttachments());
            VolumeAttachmentState state = VolumeAttachmentState.fromValue(attachment.getState());

            if (state == VolumeAttachmentState.Attached) {
                unattachedVolumes.remove(volume.getVolumeId());
                attachedVolumes.add(volume.getVolumeId());
            }
        }

        if (unattachedVolumes.isEmpty()) {
            return attachedVolumes;
        }

        LOG.info("Waiting on {} out of {} volumes to be attached, next check in {} seconds",
                unattachedVolumes.size(), volumeIds.size(), WAIT_UNTIL_ATTACHED_INTERVAL_SECONDS);
        TimeUnit.SECONDS.sleep(WAIT_UNTIL_ATTACHED_INTERVAL_SECONDS);
    }

    LOG.error("Timed out while waiting for all volumes to be attached, {} out of {} volumes were attached",
            attachedVolumes.size(), volumeIds.size());
    return attachedVolumes;
}

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