spring-cloud / spring-cloud/spring-cloud-stream

StreamBridge unable to send message due to missing TARGET_PROTOCOL field

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bug
Dominant language
Java
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Description

In Spring Pulsar we have a failing SCSt Pulsar binder integration test which seems to be caused by StreamBridge (spring-cloud-stream 5.0.0-SNAPSHOT) referencing MessageUtils.TARGET_PROTOCOL (from spring-cloud-function-context-5.0.0-SNAPSHOT) which has been removed.

Steps to reproduce

With Spring Cloud Stream 5.0.0-SNAPSHOT making the following call:

streamBridge.send("mySupplier-out-0", "myMessage");

will result in the following exception:

Caused by: java.lang.IllegalStateException: java.lang.NoSuchFieldError: TARGET_PROTOCOL
    at org.springframework.boot.SpringApplication.handleRunFailure(SpringApplication.java:808)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:325)
    at org.springframework.boot.test.context.SpringBootContextLoader.lambda$loadContext$2(SpringBootContextLoader.java:144)
    at org.springframework.util.function.ThrowingSupplier.get(ThrowingSupplier.java:58)
    at org.springframework.util.function.ThrowingSupplier.get(ThrowingSupplier.java:46)
    at org.springframework.boot.SpringApplication.withHook(SpringApplication.java:1444)
    at org.springframework.boot.test.context.SpringBootContextLoader$ContextLoaderHook.run(SpringBootContextLoader.java:563)
    at org.springframework.boot.test.context.SpringBootContextLoader.loadContext(SpringBootContextLoader.java:144)

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First steps

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  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with the StreamBridge.send("mySupplier-out-0", "myMessage") call in SpringPulsarBinderSampleApp.java and reproduce the NoSuchFieldError using Spring Cloud Stream 5.0.0-SNAPSHOT. Trace the TARGET_PROTOCOL reference and verify the Spring Cloud Function and Stream dependencies are compatible; done means the sample integration test sends the message without this exception.

Written by the indexing model from the issue text.

Assessment

Tech stack
java, spring, spring-boot
Domain
backend, stream-processing
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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