@Override
    public synchronized void connectorInfo(String connName, Callback<ConnectorInfo> callback) {
        ConnectorInfo connectorInfo = connectorInfo(connName);
        if (connectorInfo == null) {
            callback.onCompletion(new NotFoundException("Connector " + connName + " not found"), null);
            return;
        }
        callback.onCompletion(null, connectorInfo);
    }
Single process, in-memory "herder". Useful for a standalone Kafka Connect process.
connect/runtime/src/main/java/org/apache/kafka/connect/runtime/standalone/StandaloneHerder.java