1 package de.juplo.kafka.chat.backend;
3 import com.fasterxml.jackson.databind.ObjectMapper;
4 import com.fasterxml.jackson.databind.SerializationFeature;
5 import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
6 import de.juplo.kafka.chat.backend.api.ChatRoomInfoTo;
7 import de.juplo.kafka.chat.backend.api.MessageTo;
8 import lombok.extern.slf4j.Slf4j;
9 import org.springframework.core.ParameterizedTypeReference;
10 import org.springframework.http.MediaType;
11 import org.springframework.http.codec.ServerSentEvent;
12 import org.springframework.web.reactive.function.client.WebClient;
13 import reactor.core.publisher.Flux;
14 import reactor.core.publisher.Mono;
15 import reactor.core.scheduler.Schedulers;
21 public class TestListener
23 static final ParameterizedTypeReference<ServerSentEvent<String>> SSE_TYPE = new ParameterizedTypeReference<>() {};
26 public Mono<Void> run()
32 log.info("Requesting messages from chat-room {}", chatRoom);
33 List<MessageTo> list = new LinkedList<>();
34 receivedMessages.put(chatRoom.getId(), list);
35 return receiveMessages(chatRoom)
40 return Mono.just(objectMapper.readValue(sse.data(), MessageTo.class));
51 "Received a message from chat-room {}: {}",
58 .takeUntil(message -> !running)
59 .doOnComplete(() -> log.info("TestListener is done"))
60 .parallel(chatRooms.length)
61 .runOn(Schedulers.parallel())
65 Flux<ServerSentEvent<String>> receiveMessages(ChatRoomInfoTo chatRoom)
70 "/{chatRoomId}/listen",
72 .accept(MediaType.TEXT_EVENT_STREAM)
74 .bodyToFlux(SSE_TYPE);
78 private final WebClient webClient;
79 private final ChatRoomInfoTo[] chatRooms;
80 private final ObjectMapper objectMapper;
82 final Map<UUID, List<MessageTo>> receivedMessages = new HashMap<>();
84 volatile boolean running = true;
87 TestListener(Integer port, ChatRoomInfoTo[] chatRooms)
89 webClient = WebClient.create("http://localhost:" + port);
90 this.chatRooms = chatRooms;
91 objectMapper = new ObjectMapper();
92 objectMapper.registerModule(new JavaTimeModule());
93 objectMapper.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);