- private Mono<Message> persistMessage(
- Long id,
- LocalDateTime timestamp,
- String user,
- String text)
- {
- Message message = new Message(id, (long)messages.size(), timestamp, user, text);
-
- MessageKey key = new MessageKey(user, id);
- Message existing = messages.get(key);
- if (existing != null)
- {
- log.info("Message with key {} already exists; {}", key, existing);
- if (!message.equals(existing))
- throw new MessageMutationException(message, existing);
- return Mono.empty();
- }
-
- messages.put(key, message);
- return Mono
- .fromSupplier(() -> message)
- .log();
- }