有没有办法为 spring 云合同消费者注入/替换一些值？

如何解决有没有办法为 spring 云合同消费者注入/替换一些值？

我有两个服务 A 和 B

我想使用服务 A 的合同中定义的内容来测试服务 B

服务 B 的基本规范的一部分

def receiveEventFromSvcA(){
  stubTrigger.trigger('publish.event.to.queue.for.service.B')
  // I want the same message with slightly different content as
  // things under test happen when second message arrives 
  stubTrigger.trigger('publish.event.to.queue.for.service.B') // content with new timestamp
}

这是服务 A 的合同：

Contract.make {
    label("publish.event.to.queue.for.service.B")
    input {
        triggeredBy("triggerAction()")
    }
    outputMessage {
        sentTo "queue.for.B"
        headers {
            header("contentType","application/json")
        }
        body([
                "some_value"    : anyNonEmptyString(),// works
                "timestamp"     : $(c("2021-01-21T10:50:09Z"),p(iso8601WithOffset())),// does not work (fails with 'Failed to serialize payload' as timestamp is "timestamp":{"executionCommand":"getMeCustomTime()"}}")
                // "timestamp"     : $(c(execute("getMeCustomTime()")),])
    }
}

和服务 B 的合同

Contract.make {
    label("publish.event.to.some.other.qeueue")
    input {
        triggeredBy("receiveEventFromSvcA()")
    }
    outputMessage {
        sentTo "otherQueue"
        headers {
            header("contentType",// whatever here...
        ])
    }
}