1 package de.juplo.kafka.chat.backend;
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.junit.jupiter.api.BeforeEach;
7 import org.junit.jupiter.api.Test;
8 import org.springframework.http.HttpStatus;
9 import org.springframework.http.MediaType;
10 import org.springframework.web.reactive.function.client.WebClient;
11 import org.testcontainers.junit.jupiter.Testcontainers;
12 import pl.rzrz.assertj.reactor.Assertions;
13 import reactor.core.publisher.Flux;
14 import reactor.core.publisher.Mono;
16 import java.util.List;
17 import java.util.concurrent.CompletableFuture;
22 public abstract class AbstractHandoverIT
24 static final int NUM_CHATROOMS = 23;
25 static final int NUM_CLIENTS = 17;
28 private final AbstractHandoverITContainers containers;
31 AbstractHandoverIT(AbstractHandoverITContainers containers)
33 this.containers = containers;
38 void test() throws InterruptedException
40 ChatRoomInfoTo[] chatRooms = Flux
41 .range(0, NUM_CHATROOMS)
42 .flatMap(i -> createChatRoom("room-" + i))
44 .toArray(size -> new ChatRoomInfoTo[size]);
46 int port = containers.haproxy.getMappedPort(8400);
48 CompletableFuture<Void>[] testWriterFutures = new CompletableFuture[NUM_CLIENTS];
49 TestWriter[] testWriters = new TestWriter[NUM_CLIENTS];
50 for (int i = 0; i < NUM_CLIENTS; i++)
52 TestWriter testWriter = new TestWriter(
54 chatRooms[i % NUM_CHATROOMS],
56 testWriters[i] = testWriter;
57 testWriterFutures[i] = testWriter
62 TestListener testListener = new TestListener(port, chatRooms);
65 .subscribe(message -> log.info(
66 "Received message: {}",
69 log.info("Sleeping for 3 seconds...");
72 log.info("Starting Backend 2...");
73 containers.backend2.start();
74 log.info("Backend 2 started");
76 log.info("Sleeping for 3 seconds...");
79 log.info("Starting Backend 3...");
80 containers.backend3.start();
81 log.info("Backend 3 started");
83 log.info("Sleeping for 3 seconds...");
86 log.info("Shutting down writers...");
87 for (int i = 0; i < NUM_CLIENTS; i++)
89 log.info("Shutting down writer {}", i);
90 testWriters[i].running = false;
91 testWriterFutures[i].join();
92 log.info("Joined TestWriter {}", testWriters[i].user);
95 // Yield the work, so that the last messages can be received
98 for (int i = 0; i < NUM_CLIENTS; i++)
100 TestWriter testWriter = testWriters[i];
101 ChatRoomInfoTo chatRoom = testWriter.chatRoom;
102 List<MessageTo> receivedMessages = testListener.receivedMessages.get(chatRoom.getId());
104 Assertions.assertThat(receivedMessages
106 .filter(message -> message.getUser().equals(testWriter.user.getName()))
107 ).containsExactlyElementsOf(testWriter.sentMessages);
111 Mono<ChatRoomInfoTo> createChatRoom(String name)
116 .contentType(MediaType.TEXT_PLAIN)
118 .accept(MediaType.APPLICATION_JSON)
119 .exchangeToMono(response ->
121 if (response.statusCode().equals(HttpStatus.OK))
123 return response.bodyToMono(ChatRoomInfoTo.class);
127 return response.createError();
136 void setUp() throws Exception
140 Integer port = containers.haproxy.getMappedPort(8400);
141 webClient = WebClient.create("http://localhost:" + port);