updated spring boot

removed HomeController
started to decouple status ingress and feed egress

pom.xml

@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.3.1.RELEASE</version>
+		<version>2.4.5</version>
 		<relativePath />
 		<!-- lookup parent from repository -->
 	</parent>
@@ -34,7 +34,7 @@
 		</dependency>
 		<dependency>
 			<groupId>org.springframework.integration</groupId>
-			<artifactId>spring-integration-core</artifactId>
+			<artifactId>spring-integration-webflux</artifactId>
 		</dependency>
 		<dependency>
 			<groupId>org.postgresql</groupId>

src/main/java/io/dietz/ed/companion/controllers/HomeController.java

@@ -1,14 +0,0 @@
-package io.dietz.ed.companion.controllers;
-
-import org.springframework.stereotype.Controller;
-import org.springframework.ui.Model;
-import org.springframework.web.bind.annotation.GetMapping;
-
-@Controller
-public class HomeController {
-    
-    @GetMapping("/")
-    public String index(final Model model) {
-        return "index";
-    }
-}

src/main/java/io/dietz/ed/companion/controllers/StatusController.java

@@ -11,8 +11,8 @@ import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RestController;
 
 import io.dietz.ed.companion.domain.State;
-import io.dietz.ed.companion.models.UpdateFeedItem;
 import io.dietz.ed.companion.models.UpdateStatusResponse;
+import io.dietz.ed.companion.service.StateHandlerService;
 import io.dietz.ed.companion.service.UpdateFeedsService;
 import reactor.core.publisher.Mono;
 
@@ -23,6 +23,9 @@ public class StatusController {
     @Autowired
     private UpdateFeedsService updateChannelsService;
 
+    @Autowired
+    private StateHandlerService stateHandlerService;
+
     @Autowired
     private ObjectMapper objectMapper;
 
@@ -31,17 +34,21 @@ public class StatusController {
         System.out.println(rawPayload);
         return Mono.create(sink -> {
             if (updateChannelsService.hasActiveFeed(feedId)) {
-                UpdateFeedItem updateFeedItem = new UpdateFeedItem(feedId, "credits");
-                State payload;
-                try {
-                    payload = objectMapper.readValue(rawPayload, State.class);
-                    updateFeedItem.setContent(Long.valueOf(payload.getCredits()));
-                    updateChannelsService.sendFeedUpdate(updateFeedItem);
-                } catch (JsonProcessingException e) {
-                    e.printStackTrace();
+                State payload = handlePayload(rawPayload);
+                if (payload != null) {
+                    stateHandlerService.handleState(feedId, payload);
                 }
             }
             sink.success(new UpdateStatusResponse());
         });
     }
+
+    private State handlePayload(String payload) {
+        try {
+            return objectMapper.readValue(payload, State.class);
+        } catch (JsonProcessingException e) {
+            e.printStackTrace();
+        }
+        return null;
+    }
 }

src/main/java/io/dietz/ed/companion/service/StateHandlerService.java

@@ -0,0 +1,44 @@
+package io.dietz.ed.companion.service;
+
+import java.util.Map;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.integration.dsl.MessageChannels;
+import org.springframework.messaging.Message;
+import org.springframework.messaging.MessageHandler;
+import org.springframework.messaging.SubscribableChannel;
+import org.springframework.messaging.support.GenericMessage;
+import org.springframework.stereotype.Service;
+
+import io.dietz.ed.companion.domain.State;
+import io.dietz.ed.companion.models.UpdateFeedItem;
+
+@Service
+public class StateHandlerService {
+
+    @Autowired
+    private UpdateFeedsService updateFeedsService;
+
+    private SubscribableChannel channel = MessageChannels.publishSubscribe().get();
+
+    public StateHandlerService() {
+        MessageHandler stateHandler = message -> {
+            String feedId = message.getHeaders().get("feedId").toString();
+
+            System.out.println("state of '" + feedId + "' received");
+            
+            State state = State.class.cast(message.getPayload());
+            
+            UpdateFeedItem updateFeedItem = new UpdateFeedItem(feedId, "credits");
+            updateFeedItem.setContent(Long.valueOf(state.getCredits()));
+            updateFeedsService.sendFeedUpdate(updateFeedItem);
+        };
+
+        channel.subscribe(stateHandler);
+    }
+
+    public void handleState(String feedId, State state) {
+        Message<State> message = new GenericMessage<State>(state, Map.of("feedId", feedId));
+        channel.send(message);
+    }
+}

src/main/java/io/dietz/ed/companion/service/UpdateFeedsService.java

@@ -47,6 +47,15 @@ public class UpdateFeedsService {
         return wrap(flux);
     }
 
+    public boolean hasActiveFeed(String feedId) {
+        return activeFeeds.containsKey(feedId);
+    }
+
+    public void sendFeedUpdate(UpdateFeedItem updateFeedItem) {
+        Message<UpdateFeedItem> message = new GenericMessage<>(updateFeedItem);
+        channel.send(message);
+    }
+
     private <T> Flux<ServerSentEvent<T>> wrap(Flux<T> fluxToWrap) {
         return Flux.merge(fluxToWrap.map(t -> ServerSentEvent.builder(t).build()), Flux.interval(Duration.ofSeconds(15)).map(aLong -> ServerSentEvent.<T>builder().comment("keep alive").build()));
     }
@@ -65,13 +74,4 @@ public class UpdateFeedsService {
         }
     }
 
-    public boolean hasActiveFeed(String feedId) {
-        return activeFeeds.containsKey(feedId);
-    }
-
-    public void sendFeedUpdate(UpdateFeedItem updateFeedItem) {
-        Message<UpdateFeedItem> message = new GenericMessage<>(updateFeedItem);
-        channel.send(message);
-    }
-
 }