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Fixing issue 406. Handling the NullPointerException (NullOutputException) from MapMaker$ComputingMapAdapter.get() call.

This commit is contained in:
Mattias Holmqvist 2010-11-25 23:29:26 +01:00
parent b41eedf882
commit 512eb0139c
2 changed files with 57 additions and 7 deletions
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17
aws/core/src/main/java/org/jclouds/aws/ec2/compute/functions/RunningInstanceToNodeMetadata.java
View File

@ -101,9 +101,20 @@ public class RunningInstanceToNodeMetadata implements Function<RunningInstance,
builder.imageId(instance.getRegion() + "/" + instance.getImageId());
// extract the operating system from the image
Image image = instanceToImage.get(new RegionAndName(instance.getRegion(), instance.getImageId()));
if (image != null)
builder.operatingSystem(image.getOperatingSystem());
RegionAndName regionAndName = new RegionAndName(instance.getRegion(), instance.getImageId());
try {
Image image = instanceToImage.get(regionAndName);
if (image != null)
builder.operatingSystem(image.getOperatingSystem());
}
catch (NullPointerException e) {
// The instanceToImage Map may throw NullPointerException (actually subclass NullOutputException) if the
// computing Function returns a null value.
//
// See the following for more information:
// MapMaker.makeComputingMap()
// RegionAndIdToImage.apply()
}
return builder.build();
}

45
aws/core/src/test/java/org/jclouds/aws/ec2/compute/functions/RunningInstanceToNodeMetadataTest.java
View File

@ -51,6 +51,9 @@ import com.google.common.collect.ImmutableMap;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Iterables;
import com.google.common.collect.Maps;
import com.google.common.collect.MapMaker;
import javax.annotation.Nullable;
/**
* @author Adrian Cole
@ -140,15 +143,44 @@ public class RunningInstanceToNodeMetadataTest {
"i-9slweygo").location(provider).build());
}
@Test
public void testHandleMissingAMIs() {
// Handle the case when the installed AMI no longer can be found in AWS.
// Create a null-returning function to simulate that the AMI can't be found.
Function<RegionAndName, Image> nullReturningFunction = new Function<RegionAndName, Image>() {
@Override
public Image apply(@Nullable RegionAndName from) {
return null;
}
};
Map<RegionAndName, Image> instanceToImage = new MapMaker().makeComputingMap(nullReturningFunction);
RunningInstanceToNodeMetadata parser = createNodeParser(ImmutableSet.of(m1_small().build()), ImmutableSet
.of(provider), ImmutableMap
.<String, Credentials>of(), EC2ComputeServiceDependenciesModule.instanceToNodeState, instanceToImage);
RunningInstance server = firstInstanceFromResource("/ec2/describe_instances_nova.xml");
assertEquals(parser.apply(server), new NodeMetadataBuilder().state(NodeState.TERMINATED).privateAddresses(
ImmutableSet.of("10.128.207.5")).tag("NOTAG-i-9slweygo").imageId("us-east-1/ami-25CB1213").id(
"us-east-1/i-9slweygo").providerId("i-9slweygo").hardware(m1_small().build()).location(
provider).build());
}
protected RunningInstance firstInstanceFromResource(String resource) {
RunningInstance server = Iterables.get(Iterables.get(DescribeInstancesResponseHandlerTest
.parseRunningInstances(resource), 0), 0);
.parseRunningInstances(resource), 0), 0);
return server;
}
protected RunningInstanceToNodeMetadata createNodeParser(final ImmutableSet<Hardware> hardware,
final ImmutableSet<Location> locations, Set<org.jclouds.compute.domain.Image> images,
Map<String, Credentials> credentialStore) {
final ImmutableSet<Location> locations,
Set<org.jclouds.compute.domain.Image> images,
Map<String, Credentials> credentialStore) {
Map<InstanceState, NodeState> instanceToNodeState = EC2ComputeServiceDependenciesModule.instanceToNodeState;
Map<RegionAndName, Image> instanceToImage = Maps.uniqueIndex(images, new Function<Image, RegionAndName>() {
@ -159,6 +191,13 @@ public class RunningInstanceToNodeMetadataTest {
}
});
return createNodeParser(hardware, locations, credentialStore, instanceToNodeState, instanceToImage);
}
private RunningInstanceToNodeMetadata createNodeParser(final ImmutableSet<Hardware> hardware, final
ImmutableSet<Location> locations, Map<String, Credentials> credentialStore, Map<InstanceState, NodeState>
instanceToNodeState, Map<RegionAndName, Image> instanceToImage) {
Supplier<Set<? extends Location>> locationSupplier = new Supplier<Set<? extends Location>>() {
@Override