/// <summary>
/// Post a message to the server
/// </summary>
public override Task <SendMessageResponse> SendMessage(
SendMessageRequest request,
ServerCallContext context)
{
System.Console.WriteLine(
$"{context.Host} sent message Name={request.From}; Text={request.Text}");
// first we map the received protobuffer 'model' to the local data 'model'
var msg = new ChatMessage(request.Text, request.From);
// now push the new message into the repository
var repo = new Repositories.MessageRepository();
repo.PostMessage(msg);
// finally we return the expected response to the client
return(Task.FromResult(new SendMessageResponse()));
}
/// <summary>
/// Returns a stream of messages from the sever
/// </summary>
public override async Task GetMessages(
GetMessagesRequest request,
IServerStreamWriter <GetMessagesResponse> responseStream,
ServerCallContext context)
{
System.Console.WriteLine(
$"Call to {nameof(GetMessages)}() from {context.Host}");
// retrieve all messages from server
var repository = new Repositories.MessageRepository().GetAllMessages();
// send each message through the output stream
foreach (var msg in repository)
{
await responseStream.WriteAsync(
// here we are mapping our local data 'model' to the protobuffer contract 'model'
new GetMessagesResponse()
{
From = msg.Sender,
Text = msg.Text,
Date = msg.ArrivalDate.ToString("dd/MM/yyyy HH:mm:ss")
});
}
}