WIP:test: `*ConfigurationIT` asserts, if restored messages can be seen

[demos/kafka/chat] / src / test / java / de / juplo / kafka / chat / backend / TestListener.java

diff --git a/src/test/java/de/juplo/kafka/chat/backend/TestListener.java b/src/test/java/de/juplo/kafka/chat/backend/TestListener.java
index b74b8e8..3f7fb9d 100644 (file)
--- a/src/test/java/de/juplo/kafka/chat/backend/TestListener.java
+++ b/src/test/java/de/juplo/kafka/chat/backend/TestListener.java
@@ -12,53 +12,53 @@ import org.springframework.http.codec.ServerSentEvent;
 import org.springframework.web.reactive.function.client.WebClient;
 import reactor.core.publisher.Flux;
 import reactor.core.publisher.Mono;
+import reactor.util.retry.Retry;
 
+import java.time.Duration;
 import java.util.*;
 
 
 @Slf4j
-public class TestListener implements Runnable
+public class TestListener
 {
   static final ParameterizedTypeReference<ServerSentEvent<String>> SSE_TYPE = new ParameterizedTypeReference<>() {};
 
 
-  @Override
-  public void run()
+  public Flux<MessageTo> run()
   {
-    Flux
+    return Flux
         .fromArray(chatRooms)
         .flatMap(chatRoom ->
         {
           List<MessageTo> list = new LinkedList<>();
           receivedMessages.put(chatRoom.getId(), list);
-          return receiveMessages(chatRoom)
-              .flatMap(sse ->
-              {
-                try
-                {
-                  return Mono.just(objectMapper.readValue(sse.data(), MessageTo.class));
-                }
-                catch (Exception e)
-                {
-                  return Mono.error(e);
-                }
-              })
-              .doOnNext(message ->
-              {
-                list.add(message);
-                log.info(
-                    "Received a message from chat-room {}: {}",
-                    chatRoom,
-                    message);
-              })
-              .take(30);
+          return receiveMessages(chatRoom);
+        });
+  }
+
+  Flux<MessageTo> receiveMessages(ChatRoomInfoTo chatRoom)
+  {
+    log.info("Requesting messages for chat-room {}", chatRoom);
+    List<MessageTo> list = receivedMessages.get(chatRoom.getId());
+    return receiveServerSentEvents(chatRoom)
+        .flatMap(sse ->
+        {
+          try
+          {
+            return Mono.just(objectMapper.readValue(sse.data(), MessageTo.class));
+          }
+          catch (Exception e)
+          {
+            return Mono.error(e);
+          }
         })
-        .takeUntil(message -> !running)
-        .then()
-        .block();
+        .doOnNext(message -> list.add(message))
+        .doOnComplete(() -> log.info("{} was completed!", chatRoom))
+        .doOnError(throwalbe -> log.error("{} failed: {}", chatRoom, throwalbe))
+        .thenMany(Flux.defer(() -> receiveMessages(chatRoom)));
   }
 
-  Flux<ServerSentEvent<String>> receiveMessages(ChatRoomInfoTo chatRoom)
+  Flux<ServerSentEvent<String>> receiveServerSentEvents(ChatRoomInfoTo chatRoom)
   {
     return webClient
         .get()
@@ -67,7 +67,8 @@ public class TestListener implements Runnable
             chatRoom.getId())
         .accept(MediaType.TEXT_EVENT_STREAM)
         .retrieve()
-        .bodyToFlux(SSE_TYPE);
+        .bodyToFlux(SSE_TYPE)
+        .retryWhen(Retry.fixedDelay(15, Duration.ofSeconds(1)));
   }
 
 
@@ -77,8 +78,6 @@ public class TestListener implements Runnable
 
   final Map<UUID, List<MessageTo>> receivedMessages = new HashMap<>();
 
-  volatile boolean running = true;
-
 
   TestListener(Integer port, ChatRoomInfoTo[] chatRooms)
   {