spring-cloud-stream

I am trying to use spring.cloud.stream.kafka.binder.headers to transport a custom header that I am setting based upon a previous question . I have read in the documentation where... spring.cloud.stream.kafka.binder.headers The list of custom headers that will be transported by the binder. Default: empty. seems to suggest that setting a list (comma separated?) will cause a custom header to get transported in the Message<> , but the header is lost as soon as the kafka write is completed. My annotation creates the header as a part of the call to the MessagingGateway: @MessagingGateway(name =

I'm exploring the the SCDF for orchestrating the existing batch task for my system. I noticed that the SC Stream App Starters already provides some OOTB ready to use streaming applications, which suits my use case of: Extracting xml file from FTP -> the ftp source Customize transformation Upload the transformed xml file to another FTP -> the ftp sink But, my system only requires the above mentioned batch job to be executed at every 10 minutes interval. Implementing it using streams app is fine but it requires the stream app to be running 24-7 (using SCDF with Kubernetes). My concern is that I

I am trying to read a json message from kafka and got an exception, which says Jackson cannot deserialize the json to POJO. The json is like {"code":"500","count":22,"from":1528343820000,"to":1528343880000} , which is an output of kafka stream. The POJO declares all attributes of the json, and is exactly the same POJO to produce the json message. So I have no idea why it would happen. I am using spring cloud stream 2.0.0.RELEASE. Any help would be appreciated. Thanks. POJO: public class CodeCount { private String code; private long count; private Date from; private Date to; @Override public

I'm trying to setup a scenario where the listeners will manually send ACK to RabbitMQ. I have this in my application.properties spring.cloud.stream.rabbit.bindings.input.consumer.acknowledge-mode=MANUAL How do I send an ack from the listener? I see from Manual Acknowledgement of Messages : Spring Cloud Stream Kafka that for Kafka, we create an Acknowledgement object and call acknowledge() in it. Is there an example for RabbitMQ to do the same? See the Spring Integration Reference Manual . The message has two headers, AmqpHeaders.CHANNEL and AmqpHeaders.DELIVERY_TAG . You need to call basicAck

Regarding the answer posted for How can @MessagingGateway be configured with Spring Cloud Stream MessageChannels? , what is the correct way to handle errors at the @MessagingGateway that can be returned from Spring Cloud Stream services? To recap, I have a @MessagingGateway that provides synchronous access to asynchronous services built using Spring Cloud Stream. When an error occurs within my Spring Cloud Stream service layer, I create an error response and send it through a SubscribableChannel to other @StreamListener services that process the errors. For example, when an account is created,