Github user wilderrodrigues commented on the pull request:
https://github.com/apache/cloudstack/pull/761#issuecomment-136318482
It has been partially fixed on 4.6, but still the code can be improved
since it might return null. Below an snippet of the 4.6 code:
@Override
public boolean isVmAlive(com.cloud.vm.VirtualMachine vm, Host host)
throws UnknownVM {
Status status = isAgentAlive(host);
if (status == null) {
throw new UnknownVM();
}
return status == Status.Up ? true : null;
}
As you can see, they now throw an Exception in canse the status is null.
However, in the return it might return null. In addition, the return type is no
longer a wrapper class, but a native boolean. Returning null would be very bad.
Could you perhaps make an amalgama of the fix, @remibergsma ? You can then
push it towards 4.4 and 4.6
Cheers,
Wilder
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