1 package de.juplo.kafka.chat.backend.implementation;
3 import de.juplo.kafka.chat.backend.domain.ChatHomeService;
4 import de.juplo.kafka.chat.backend.domain.ChatRoomInfo;
5 import de.juplo.kafka.chat.backend.domain.Message;
6 import org.slf4j.Logger;
7 import org.slf4j.LoggerFactory;
8 import reactor.core.publisher.Flux;
10 import java.util.UUID;
11 import java.util.function.BiConsumer;
12 import java.util.function.Consumer;
15 public interface StorageStrategy
17 Logger log = LoggerFactory.getLogger(StorageStrategy.class.getCanonicalName());
19 default void write(ChatHomeService chatHomeService)
23 this::logSuccessChatHomeService,
24 this::logFailureChatHomeService);
28 ChatHomeService chatHomeService,
29 ChatHomeServiceWrittenSuccessCallback successCallback,
30 ChatHomeServiceWrittenFailureCallback failureCallback)
35 .doOnComplete(() -> successCallback.accept(chatHomeService))
36 .doOnError(throwable -> failureCallback.accept(chatHomeService, throwable))
37 .doOnNext(chatRoomInfo ->
41 .getChatRoomData(chatRoomInfo.getId())
42 .flatMapMany(chatRoomData -> chatRoomData.getMessages()),
43 this::logSuccessChatRoom,
44 this::logFailureChatRoom)));
47 void writeChatRoomInfo(Flux<ChatRoomInfo> chatRoomInfoFlux);
48 Flux<ChatRoomInfo> readChatRoomInfo();
49 default void writeChatRoomData(
51 Flux<Message> messageFlux,
52 ChatRoomWrittenSuccessCallback successCallback,
53 ChatRoomWrittenFailureCallback failureCallback)
58 .doOnComplete(() -> successCallback.accept(chatRoomId))
59 .doOnError(throwable -> failureCallback.accept(chatRoomId, throwable)));
61 void writeChatRoomData(UUID chatRoomId, Flux<Message> messageFlux);
62 Flux<Message> readChatRoomData(UUID chatRoomId);
64 interface ChatHomeServiceWrittenSuccessCallback extends Consumer<ChatHomeService> {}
65 interface ChatHomeServiceWrittenFailureCallback extends BiConsumer<ChatHomeService, Throwable> {}
67 default void logSuccessChatHomeService(ChatHomeService chatHomeService)
69 log.info("Successfully stored {}", chatHomeService);
72 default void logFailureChatHomeService(ChatHomeService chatHomeService, Throwable throwable)
74 log.error("Could not store {}: {}", chatHomeService, throwable);
77 interface ChatRoomWrittenSuccessCallback extends Consumer<UUID> {}
78 interface ChatRoomWrittenFailureCallback extends BiConsumer<UUID, Throwable> {}
80 default void logSuccessChatRoom(UUID chatRoomId)
82 log.info("Successfully stored chat-room {}", chatRoomId);
85 default void logFailureChatRoom(UUID chatRoomId, Throwable throwable)
87 log.error("Could not store chat-room {}: {}", chatRoomId, throwable);