How to use

WithId

in

org.eclipse.ditto.signals.base

private static String namespaceFromId(final WithId withId) {
  return withId.getId().split(":", 2)[0];
}

private static String namespaceFromId(final WithId withId) {
  return withId.getId().split(":", 2)[0];
}

private static String namespaceFromId(final WithId withId) {
  return withId.getId().split(":", 2)[0];
}

private static String namespaceFromId(final WithId withId) {
  return withId.getId().split(":", 2)[0];
}

static IllegalArgumentException unhandled(final WithId command) {
  final String msgPattern = "This Thing Actor did not handle the requested Thing with ID <{0}>!";
  throw new IllegalArgumentException(MessageFormat.format(msgPattern, command.getId()));
}

static IllegalArgumentException unhandled(final WithId command) {
  final String msgPattern = "This Thing Actor did not handle the requested Thing with ID <{0}>!";
  throw new IllegalArgumentException(MessageFormat.format(msgPattern, command.getId()));
}

@Override
public String entityId(final Object message) {
  if (message instanceof ShardedMessageEnvelope) {
    return ((ShardedMessageEnvelope) message).getId();
  } else if (message instanceof WithId) {
    return ((WithId) message).getId();
  } else if (message instanceof ShardRegion.StartEntity) {
    return ((ShardRegion.StartEntity) message).entityId();
  }
  return null;
}

@Override
public String entityId(final Object message) {
  if (message instanceof ShardedMessageEnvelope) {
    return ((ShardedMessageEnvelope) message).getId();
  } else if (message instanceof WithId) {
    return ((WithId) message).getId();
  } else if (message instanceof ShardRegion.StartEntity) {
    return ((ShardRegion.StartEntity) message).entityId();
  }
  return null;
}

/**
 * Blocks a {@code signal} if it relates to an entity within a blocked namespace.
 *
 * @param signal the signal to block.
 * @return a completion stage which either completes successfully with the given {@code signal} or exceptionally
 * with a {@code NamespaceBlockedException}.
 */
public CompletionStage<WithDittoHeaders> block(final WithDittoHeaders signal) {
  if (signal instanceof WithId) {
    final Optional<String> namespaceOptional = NamespaceReader.fromEntityId(((WithId) signal).getId());
    if (namespaceOptional.isPresent()) {
      final String namespace = namespaceOptional.get();
      return blockedNamespaces.contains(namespace)
          .thenApply(containsNamespace -> {
            if (containsNamespace != null && containsNamespace) {
              throw NamespaceBlockedException.newBuilder(namespace)
                  .dittoHeaders(signal.getDittoHeaders())
                  .build();
            } else {
              return signal;
            }
          });
    }
  }
  return CompletableFuture.completedFuture(signal);
}