private static <T> Maybe<T> tryValidateBean(
T object, RegisteredType type, final RegisteredTypeLoadingContext context) {
if (object == null) return Maybe.absentNull("object is null");
if (type != null) {
if (type.getKind() != RegisteredTypeKind.BEAN)
return Maybe.absent("Validating a bean when type is " + type.getKind() + " " + type);
if (!isSubtypeOf(object.getClass(), type))
return Maybe.absent(object + " does not have all the java supertypes of " + type);
}
if (context != null) {
if (context.getExpectedKind() != null && context.getExpectedKind() != RegisteredTypeKind.BEAN)
return Maybe.absent(
"Validating a bean when constraint expected " + context.getExpectedKind());
if (context.getExpectedJavaSuperType() != null
&& !context.getExpectedJavaSuperType().isInstance(object))
return Maybe.absent(
object
+ " is not of the expected java supertype "
+ context.getExpectedJavaSuperType());
}
return Maybe.of(object);
}
/**
* Returns a wrapped map, if the object is YAML which parses as a map; otherwise returns absent
* capable of throwing an error with more details
*/
@SuppressWarnings("unchecked")
public static Maybe<Map<?, ?>> getAsYamlMap(Object planData) {
if (!(planData instanceof String)) return Maybe.absent("not a string");
Iterable<Object> result;
try {
result = Yamls.parseAll((String) planData);
} catch (Exception e) {
Exceptions.propagateIfFatal(e);
return Maybe.absent(e);
}
Iterator<Object> ri = result.iterator();
if (!ri.hasNext()) return Maybe.absent("YAML has no elements in it");
Object r1 = ri.next();
if (ri.hasNext()) return Maybe.absent("YAML has multiple elements in it");
if (r1 instanceof Map) return (Maybe<Map<?, ?>>) (Maybe<?>) Maybe.of(r1);
return Maybe.absent("YAML does not contain a map");
}
private WaitInTaskForAttributeReady(
Entity source,
AttributeSensor<T> sensor,
Predicate<? super T> ready,
List<AttributeAndSensorCondition<?>> abortConditions,
String blockingDetails) {
this.source = source;
this.sensor = sensor;
this.ready = ready;
this.abortSensorConditions = abortConditions;
this.blockingDetails = blockingDetails;
this.timeout = Duration.PRACTICALLY_FOREVER;
this.onTimeout = Maybe.absent();
this.ignoreUnmanaged = DEFAULT_IGNORE_UNMANAGED;
this.onUnmanaged = Maybe.absent();
this.postProcess = null;
}
/**
* Validates that the given type matches the context (if supplied); if not satisfied. returns an
* {@link Absent} if failed with details of the error, with {@link Absent#isNull()} true if the
* object is null.
*/
public static Maybe<RegisteredType> tryValidate(
RegisteredType item, final RegisteredTypeLoadingContext constraint) {
// kept as a Maybe in case someone wants a wrapper around item validity;
// unclear what the contract should be, as this can return Maybe.Present(null)
// which is suprising, but it is more natural to callers otherwise they'll likely do a separate
// null check on the item
// (often handling null different to errors) so the Maybe.get() is redundant as they have an
// object for the input anyway.
if (item == null || constraint == null) return Maybe.ofDisallowingNull(item);
if (constraint.getExpectedKind() != null
&& !constraint.getExpectedKind().equals(item.getKind()))
return Maybe.absent(item + " is not the expected kind " + constraint.getExpectedKind());
if (constraint.getExpectedJavaSuperType() != null) {
if (!isSubtypeOf(item, constraint.getExpectedJavaSuperType())) {
return Maybe.absent(
item + " is not for the expected type " + constraint.getExpectedJavaSuperType());
}
}
return Maybe.of(item);
}
private static <T> Maybe<T> tryValidateSpec(
T object, RegisteredType rType, final RegisteredTypeLoadingContext constraint) {
if (object == null) return Maybe.absentNull("object is null");
if (!(object instanceof AbstractBrooklynObjectSpec)) {
Maybe.absent("Found " + object + " when expecting a spec");
}
Class<?> targetType = ((AbstractBrooklynObjectSpec<?, ?>) object).getType();
if (targetType == null) {
Maybe.absent("Spec " + object + " does not have a target type");
}
if (rType != null) {
if (rType.getKind() != RegisteredTypeKind.SPEC)
Maybe.absent("Validating a spec when type is " + rType.getKind() + " " + rType);
if (!isSubtypeOf(targetType, rType))
Maybe.absent(object + " does not have all the java supertypes of " + rType);
}
if (constraint != null) {
if (constraint.getExpectedJavaSuperType() != null) {
if (!constraint.getExpectedJavaSuperType().isAssignableFrom(targetType)) {
Maybe.absent(
object
+ " does not target the expected java supertype "
+ constraint.getExpectedJavaSuperType());
}
if (constraint.getExpectedJavaSuperType().isAssignableFrom(BrooklynObjectInternal.class)) {
// don't check spec type; any spec is acceptable
} else {
@SuppressWarnings("unchecked")
Class<? extends AbstractBrooklynObjectSpec<?, ?>> specType =
RegisteredTypeLoadingContexts.lookupSpecTypeForTarget(
(Class<? extends BrooklynObject>) constraint.getExpectedJavaSuperType());
if (specType == null) {
// means a problem in our classification of spec types!
Maybe.absent(
object
+ " is returned as spec for unexpected java supertype "
+ constraint.getExpectedJavaSuperType());
}
if (!specType.isAssignableFrom(object.getClass())) {
Maybe.absent(
object
+ " is not a spec of the expected java supertype "
+ constraint.getExpectedJavaSuperType());
}
}
}
}
return Maybe.of(object);
}
public Builder<T, V> onUnmanagedThrow() {
onUnmanaged = Maybe.<V>absent();
return this;
}
public Builder<T, V> onTimeoutThrow() {
onTimeout = Maybe.<V>absent();
return this;
}
@Override
@Deprecated
public Maybe<Object> getConfigRaw(ConfigKey<?> key, boolean includeInherited) {
Maybe<Object> result = delegate.getConfigRaw(key, includeInherited);
return (result.isPresent()) ? Maybe.of(transform(key, result.get())) : Maybe.absent();
}