public static ModifyServiceResponseType modifyService(final ModifyServiceType request)
throws Exception {
final ModifyServiceResponseType reply = request.getReply();
try {
if (NamedTransition.INSTANCE.apply(request)) {
reply.markWinning();
} else {
Component.State nextState = Component.State.valueOf(request.getState().toUpperCase());
ServiceConfiguration config = findService(request.getName());
Topology.transition(nextState).apply(config).get();
reply.markWinning();
}
} catch (Exception ex) {
Exceptions.maybeInterrupted(ex);
throw new EucalyptusCloudException(
"Failed to execute request transition: "
+ request.getState()
+ "\nDue to:\n"
+ Throwables.getRootCause(ex).getMessage()
+ "\nPossible arguments are: \n"
+ "TRANSITIONS\n\t"
+ Joiner.on("\n\t").join(Topology.Transitions.values())
+ "STATES\n\t"
+ Joiner.on("\n\t").join(Component.State.values()),
ex);
}
return reply;
}
@Override
public boolean apply(ModifyServiceType request) {
try {
final Topology.Transitions transition =
Topology.Transitions.valueOf(request.getState().toUpperCase());
String name = request.getName();
ServiceConfiguration config = findService(name);
if (Topology.Transitions.RESTART.equals(transition)) {
Topology.stop(config).get();
try {
Topology.start(config).get();
} catch (Exception ex) {
Exceptions.maybeInterrupted(ex);
Logs.extreme().error(ex, ex);
throw Exceptions.toUndeclared(ex);
}
} else {
Topology.transition(transition.get()).apply(config).get();
}
} catch (final IllegalArgumentException ex) {
return false;
} catch (final Exception ex) {
Exceptions.maybeInterrupted(ex);
Logs.extreme().error(ex, ex);
throw Exceptions.toUndeclared(ex);
}
return true;
}
