private static Map<String, Object> findMembers(Object o, Predicate<Field> fieldPredicate)
throws IllegalArgumentException, IllegalAccessException {
Map<String, Object> result = Maps.newLinkedHashMap();
Class<?> clazz = (o != null) ? o.getClass() : null;
if (o instanceof Iterable) {
int i = 0;
for (Object member : (Iterable) o) {
result.put("member" + (i++), member);
}
} else if (o instanceof Map) {
int i = 0;
Map<?, ?> m = (Map<?, ?>) o;
for (Map.Entry<?, ?> entry : m.entrySet()) {
result.put("member" + (i++), new Entry(entry.getKey(), entry.getValue()));
}
} else {
for (Field field : FlagUtils.getAllFields(clazz, fieldPredicate)) {
field.setAccessible(true);
String fieldName = field.getName();
Object fieldVal = field.get(o);
result.put(fieldName, fieldVal);
}
}
return result;
}
public static void logUnserializableChains(Object root)
throws IllegalArgumentException, IllegalAccessException {
final Map<List<Object>, Class<?>> unserializablePaths = Maps.newLinkedHashMap();
Visitor visitor =
new Visitor() {
@Override
public boolean visit(Object o, Iterable<Object> refChain) {
try {
Serializers.reconstitute(o);
return true;
} catch (Exception e) {
// not serializable in some way: report
ImmutableList<Object> refChainList = ImmutableList.copyOf(refChain);
// First strip out any less specific paths
for (Iterator<List<Object>> iter = unserializablePaths.keySet().iterator();
iter.hasNext(); ) {
List<Object> existing = iter.next();
if (refChainList.size() >= existing.size()
&& refChainList.subList(0, existing.size()).equals(existing)) {
iter.remove();
}
}
// Then add this list
unserializablePaths.put(ImmutableList.copyOf(refChainList), o.getClass());
return false;
}
}
};
deepVisitInternal(
root, SERIALIZED_FIELD_PREDICATE, Lists.newArrayList(), new LinkedList<Object>(), visitor);
StringBuilder msg = new StringBuilder("Not serializable: \n");
for (Map.Entry<List<Object>, Class<?>> entry : unserializablePaths.entrySet()) {
msg.append("\ttype=" + entry.getValue() + "; chain=" + entry.getKey() + "\n");
}
LOG.warn(msg.toString());
}
