[WHIRR-216] Improve error message if whirr.instance-templates left out of config

• Type: Improvement
• Status: Resolved
• Priority: Trivial
• Resolution: Fixed
• Affects Version/s: 0.3.0
• Fix Version/s: 0.5.0
• Component/s: cli
• Assignee: Andrei Savu
• Reporter: Johan Oskarsson
• Created: 25/Jan/11 19:18
• Updated: 09/May/11 16:02
• Resolved: 09/May/11 16:02

Description

When launching a cluster without whirr.instance-templates specified in the config file used the following error message appears. It could be made more user friendly.

bin/whirr launch-cluster --config ~/cassandra.properties
Bootstrapping cluster
Exception in thread "main" java.lang.IndexOutOfBoundsException: index (0) must be less than size (0)
at com.google.common.base.Preconditions.checkElementIndex(Preconditions.java:301)
at com.google.common.base.Preconditions.checkElementIndex(Preconditions.java:280)
at com.google.common.collect.Iterables.get(Iterables.java:610)
at org.apache.whirr.cluster.actions.ScriptBasedClusterAction.execute(ScriptBasedClusterAction.java:77)
at org.apache.whirr.service.Service.launchCluster(Service.java:71)
at org.apache.whirr.cli.command.LaunchClusterCommand.run(LaunchClusterCommand.java:61)
at org.apache.whirr.cli.Main.run(Main.java:65)
at org.apache.whirr.cli.Main.main(Main.java:91)