// Fires up an instance, finds its root volume ID, takes a snapshot, then
// terminates the instance.
private Snapshot createSnapshot() throws RunNodesException {
String instanceId = null;
try {
RunningInstance instance =
getOnlyElement(
concat(
ec2Client
.getInstanceServices()
.runInstancesInRegion(regionId, null, imageId, 1, 1)));
instanceId = instance.getId();
assertTrue(runningTester.apply(instance), instanceId + "didn't achieve the state running!");
instance =
getOnlyElement(
concat(
ec2Client.getInstanceServices().describeInstancesInRegion(regionId, instanceId)));
BlockDevice device = instance.getEbsBlockDevices().get("/dev/sda1");
assertNotNull(device, "device: /dev/sda1 not present on: " + instance);
Snapshot snapshot =
ec2Client
.getElasticBlockStoreServices()
.createSnapshotInRegion(regionId, device.getVolumeId());
snapshotsToDelete.add(snapshot.getId());
return snapshot;
} finally {
if (instanceId != null)
ec2Client.getInstanceServices().terminateInstancesInRegion(regionId, instanceId);
}
}
protected Set<RunningInstance> createNodesInRegionAndZone(
String region,
String zone,
String group,
int count,
Template template,
RunInstancesOptions instanceOptions) {
int countStarted = 0;
int tries = 0;
Set<RunningInstance> started = ImmutableSet.<RunningInstance>of();
while (countStarted < count && tries++ < count) {
if (logger.isDebugEnabled())
logger.debug(
">> running %d instance region(%s) zone(%s) ami(%s) params(%s)",
count - countStarted,
region,
zone,
template.getImage().getProviderId(),
instanceOptions.buildFormParameters());
started =
ImmutableSet.copyOf(
concat(
started,
client
.getInstanceServices()
.runInstancesInRegion(
region,
zone,
template.getImage().getProviderId(),
1,
count - countStarted,
instanceOptions)));
countStarted = size(started);
if (countStarted < count)
logger.debug(
">> not enough instances (%d/%d) started, attempting again", countStarted, count);
}
return started;
}