/// <summary>
/// Spawns a worker helper which communicates with the message store to add a dislike
/// to a user message given in the message passed as parameter.
/// </summary>
/// <param name="m">non-null message of type Dislike</param>
protected void processDislike(Message m)
{
Dislike like = (Dislike)m;
if (!ongoingCommunications.ContainsKey(like.CommunicationId))
{
throw new UnknownClientException("Unknown communication ID");
}
SimulatedActor client = ongoingCommunications[like.CommunicationId];
MessageStoreMessage message = new AddDislike(like.ClientName, like.MessageId, like.CommunicationId);
WorkerHelper helper = new WorkerHelper(messageStore, client, message, system);
system.Spawn(helper);
}
/// <summary>
/// Spawns a worker helper which communicates with the message store to retrieve
/// messages of the author given in the message passed as parameter.
/// </summary>
/// <param name="m">non-null message of type RetrieveMessages</param>
protected void processRetrieveMessages(Message m)
{
RetrieveMessages retrMessages = (RetrieveMessages)m;
if (!ongoingCommunications.ContainsKey(retrMessages.CommunicationId))
{
throw new UnknownClientException("Unknown communication ID");
}
SimulatedActor client = ongoingCommunications[retrMessages.CommunicationId];
MessageStoreMessage message = new RetrieveFromStore(retrMessages.Author, retrMessages.CommunicationId);
WorkerHelper helper = new WorkerHelper(messageStore, client, message, system);
system.Spawn(helper);
}
/// <summary>
/// Performs checks on a user message, which should be published. If the
/// checks are passed, a worker helper is spawned, which communicates with
/// the message store to store the new user message.
/// New messages must have zero likes, must not have a message ID assigned
/// and must not be (strictly) longer than 10 characters.
/// Only 10 characters are allowed to to alleviate exercise 4.
/// </summary>
/// <param name="m">non-null message of type Publish</param>
protected void processPublish(Message m)
{
Publish publish = (Publish)m;
if (!ongoingCommunications.ContainsKey(publish.CommunicationId))
{
throw new UnknownClientException("Unknown communication ID");
}
SimulatedActor client = ongoingCommunications[publish.CommunicationId];
UserMessage userMessage = publish.Message;
if (userMessage.Likes.Count > 0 || userMessage.Dislikes.Count > 0 || userMessage.MessageId != UserMessage.NEW ||
userMessage.Message.Length > 10)
{
client.Tell(new OperationFailed(publish.CommunicationId));
}
else
{
MessageStoreMessage message = new UpdateMessageStore(userMessage, publish.CommunicationId);
WorkerHelper helper = new WorkerHelper(messageStore, client, message, system);
system.Spawn(helper);
}
}
