public async Task <KeyValuePair <float, float>?> GetLastSheepLocation(Guid sheepId)
{
using (var tx = StateManager.CreateTransaction())
{
var sheepIds = await StateManager.GetOrAddAsync <IReliableDictionary <Guid, ActorId> >("sheepIds");
var sheepActorId = await sheepIds.TryGetValueAsync(tx, sheepId);
if (!sheepActorId.HasValue)
{
return(null);
}
var sheep = SheepConnectionFactory.GetSheep(sheepActorId.Value);
return(await sheep.GetLatestLocation());
}
}
public async Task ReportLocation(Location location)
{
using (var tx = StateManager.CreateTransaction())
{
var timestamps = await StateManager.GetOrAddAsync <IReliableDictionary <Guid, DateTime> >("timestamps");
var sheepIds = await StateManager.GetOrAddAsync <IReliableDictionary <Guid, ActorId> >("sheepIds");
var timestamp = DateTime.UtcNow;
// Update sheep
var sheepActorId = await sheepIds.GetOrAddAsync(tx, location.SheepId, ActorId.CreateRandom());
await SheepConnectionFactory.GetSheep(sheepActorId).SetLocation(timestamp, location.Latitude, location.Longitude);
// Update service with new timestamp
await timestamps.AddOrUpdateAsync(tx, location.SheepId, DateTime.UtcNow, (guid, time) => timestamp);
await tx.CommitAsync();
}
}