Github user neykov commented on a diff in the pull request: https://github.com/apache/brooklyn-server/pull/332#discussion_r79593985 --- Diff: locations/jclouds/src/main/java/org/apache/brooklyn/location/jclouds/JcloudsLocation.java --- @@ -2862,15 +2863,61 @@ protected String getFirstReachableAddress(NodeMetadata node, ConfigBag setup) { String result; if (enabled) { Duration timeout = "true".equals(pollForFirstReachable) ? Duration.FIVE_MINUTES : Duration.of(pollForFirstReachable); - result = JcloudsUtil.getFirstReachableAddress(node, timeout); - LOG.debug("Using first-reachable address "+result+" for node "+node+" in "+this); + + Predicate<HostAndPort> pollForFirstReachableHostAndPortPredicate; + if (setup.get(POLL_FOR_FIRST_REACHABLE_ADDRESS_PREDICATE) != null) { + LOG.debug("Using pollForFirstReachableAddress.predicate supplied from config for location " + this + " " + + POLL_FOR_FIRST_REACHABLE_ADDRESS_PREDICATE.getName() + " : " + setup.get(POLL_FOR_FIRST_REACHABLE_ADDRESS_PREDICATE)); + pollForFirstReachableHostAndPortPredicate = setup.get(POLL_FOR_FIRST_REACHABLE_ADDRESS_PREDICATE); + } else { + LOG.debug("Using pollForFirstReachableAddress.predicate.type supplied from config for location " + this + " " + POLL_FOR_FIRST_REACHABLE_ADDRESS_PREDICATE_TYPE.getName() + + " : " + setup.get(POLL_FOR_FIRST_REACHABLE_ADDRESS_PREDICATE_TYPE)); + + List<Constructor<?>> constructors = Arrays.asList(setup.get(POLL_FOR_FIRST_REACHABLE_ADDRESS_PREDICATE_TYPE).getConstructors()); + Optional<Constructor<?>> emptyConstructor= Iterables.tryFind(constructors, new Predicate<Constructor<?>>() { + @Override public boolean apply(Constructor<?> constructor) { + return constructor.getParameterTypes().length == 0; + } + }); + Optional<Constructor<?>> mapConstructor = Iterables.tryFind(constructors, new Predicate<Constructor<?>>() { + @Override public boolean apply(Constructor<?> constructor) { + if (constructor.getParameterTypes().length == 1) { + return constructor.getParameterTypes()[0].isAssignableFrom(Map.class); + } else { + return false; + } + } + }); --- End diff -- I'd use `type.getConstructor(Map.class)` instead with the no arguments path in the `catch(NoSuchMethodException)` block.
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