// 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);
}
}
private void setBlockDeviceMappingForInstanceInRegion() {
String volumeId = ebsInstance.getEbsBlockDevices().get("/dev/sda1").getVolumeId();
Map<String, BlockDevice> mapping = Maps.newLinkedHashMap();
mapping.put("/dev/sda1", new BlockDevice(volumeId, false));
try {
client
.getInstanceServices()
.setBlockDeviceMappingForInstanceInRegion(null, ebsInstance.getId(), mapping);
Map<String, BlockDevice> devices =
client
.getInstanceServices()
.getBlockDeviceMappingForInstanceInRegion(null, ebsInstance.getId());
assertEquals(devices.size(), 1);
String deviceName = Iterables.getOnlyElement(devices.keySet());
BlockDevice device = Iterables.getOnlyElement(devices.values());
assertEquals(device.getVolumeId(), volumeId);
assertEquals(deviceName, "/dev/sda1");
assertEquals(device.isDeleteOnTermination(), false);
System.out.println("OK: setBlockDeviceMappingForInstanceInRegion");
} catch (Exception e) {
System.err.println("setBlockDeviceMappingForInstanceInRegion");
e.printStackTrace();
}
}