Closed
Description
Deferring the creation of integration components prevents injection:
@SpringBootApplication
public class So59469573Application {
public static void main(String[] args) {
SpringApplication.run(So59469573Application.class, args);
}
}
@Component
class Integration {
@InboundChannelAdapter(channel = "channel", autoStartup = "true",
poller = @Poller(fixedDelay = "5000"))
public String foo() {
return "foo";
}
@ServiceActivator(inputChannel = "channel")
public void handle(String in) {
System.out.println(in);
}
}
@RestController
class Rest {
@Autowired
@Qualifier("integration.foo.inboundChannelAdapter")
SourcePollingChannelAdapter adapter;
@PostMapping("/foo/{command}")
public void trigger(@PathVariable String command) {
if ("start".equals(command)) {
adapter.start();
}
}
}Description:
Field adapter in com.example.demo.Rest required a bean of type 'org.springframework.integration.endpoint.SourcePollingChannelAdapter' that could not be found.
The injection point has the following annotations:
- @org.springframework.beans.factory.annotation.Autowired(required=true)
- @org.springframework.beans.factory.annotation.Qualifier(value=integration.foo.inboundChannelAdapter)
Action:
Consider defining a bean of type 'org.springframework.integration.endpoint.SourcePollingChannelAdapter' in your configuration.
I am sure that was not intended although the reason for the change is valid too.
Work around is to use a control bus:
@SpringBootApplication
@IntegrationComponentScan
public class So59469573Application {
public static void main(String[] args) {
SpringApplication.run(So59469573Application.class, args);
}
}
@Component
class Integration {
public Integration() {
super();
}
@InboundChannelAdapter(channel = "channel", autoStartup = "false",
poller = @Poller(fixedDelay = "5000"))
public String foo() {
return "foo";
}
@ServiceActivator(inputChannel = "channel")
public void handle(String in) {
System.out.println(in);
}
@ServiceActivator(inputChannel = "controlChannel")
@Bean
public ExpressionControlBusFactoryBean controlBus() {
return new ExpressionControlBusFactoryBean();
}
}
@MessagingGateway(defaultRequestChannel = "controlChannel")
interface Control {
void send(String control);
}
@RestController
class Rest {
@Autowired
Control control;
public Rest() {
super();
}
@PostMapping("/foo/{command}")
public void trigger(@PathVariable String command) {
if ("start".equals(command)) {
control.send("@'integration.foo.inboundChannelAdapter'.start()");
}
}
}