public static async Task <IActionResult> Run(
[HttpTrigger(AuthorizationLevel.Anonymous, "post", Route = null)] HttpRequest req,
[OrchestrationClient] DurableOrchestrationClient starter,
ILogger log)
{
// get request params
var postData = await req.ReadAsStringAsync();
GameSessionRequest sessionParams = null;
try
{
sessionParams = JsonConvert.DeserializeObject <GameSessionRequest>(postData);
}
catch (JsonException ex)
{
return(new BadRequestResult());
}
// get playerId
int?playerId = null;
if (sessionParams != null)
{
playerId = sessionParams.PlayerId;
log.LogInformation($"The player identifier provided is: {playerId}");
}
else
{
return(new BadRequestResult());
}
// query db for session matching params
string matchResult = null;
if (playerId.HasValue)
{
matchResult = await DataClient.GetJoinableGameSessionGuid(playerId.Value.ToString());
}
if (matchResult == null)
{
// create session
var initialGameState = new GameSession(playerId.Value);
string instanceId = await starter.StartNewAsync("GameSession", initialGameState);
// write game to db so other players can discover it
await DataClient.AddGameSession(initialGameState, instanceId);
log.LogInformation($"Started game session for player {playerId} with ID = '{instanceId}'.");
matchResult = instanceId;
}
else
{
// send 'player join' event to session orchestrator
await starter.RaiseEventAsync(matchResult, Constants.PlayerJoinEventTag, playerId);
}
return(new OkObjectResult(matchResult));
}