juplo.de Git - demos/kafka/chat/blob - src/test/java/de/juplo/kafka/chat/backend/TestClient.java

   1 package de.juplo.kafka.chat.backend;
   2
   3 import de.juplo.kafka.chat.backend.api.ChatRoomInfoTo;
   4 import de.juplo.kafka.chat.backend.api.MessageTo;
   5 import lombok.extern.slf4j.Slf4j;
   6 import org.springframework.http.HttpStatus;
   7 import org.springframework.http.MediaType;
   8 import org.springframework.web.reactive.function.client.WebClient;
   9 import reactor.core.publisher.Mono;
  10 import reactor.util.retry.Retry;
  11
  12 import java.time.Duration;
  13 import java.util.concurrent.ThreadLocalRandom;
  14
  15
  16 @Slf4j
  17 public class TestClient
  18 {
  19   public void run()
  20   {
  21     for (int i = 0; i < 100; i++)
  22     {
  23       String message = "Message #" + i;
  24       for (ChatRoomInfoTo chatRoom : chatRooms)
  25       {
  26         sendMessage(chatRoom, message)
  27             .retryWhen(Retry.fixedDelay(10, Duration.ofSeconds(1)))
  28             .map(MessageTo::toString)
  29             .subscribe(result -> log.info(
  30                 "{} sent message \"{}\" to {}",
  31                 user,
  32                 message,
  33                 chatRoom));
  34       }
  35       try
  36       {
  37         Thread.sleep(ThreadLocalRandom.current().nextLong(700, 1000));
  38       }
  39       catch (Exception e)
  40       {
  41         throw new RuntimeException(e);
  42       }
  43     }
  44   }
  45
  46   private Mono<MessageTo> sendMessage(
  47       ChatRoomInfoTo chatRoom,
  48       String message)
  49   {
  50     return webClient
  51         .put()
  52         .uri(
  53             "/{chatRoomId}/{username}/{serial}",
  54             chatRoom.getId(),
  55             user.getName(),
  56             user.nextSerial())
  57         .contentType(MediaType.TEXT_PLAIN)
  58         .accept(MediaType.APPLICATION_JSON)
  59         .bodyValue(message)
  60         .exchangeToMono(response ->
  61         {
  62           if (response.statusCode().equals(HttpStatus.OK))
  63           {
  64             return response.bodyToMono(MessageTo.class);
  65           }
  66           else
  67           {
  68             return response.createError();
  69           }
  70         });
  71   }
  72
  73
  74   private final WebClient webClient;
  75   private final ChatRoomInfoTo[] chatRooms;
  76   private final User user;
  77
  78
  79   TestClient(Integer port, ChatRoomInfoTo[] chatRooms, String username)
  80   {
  81     webClient = WebClient.create("http://localhost:" + port);
  82     this.chatRooms = chatRooms;
  83     user = new User(username);
  84   }
  85 }