public void GetMergedTokenNetworkDeltas_WhenCalled_ReturnsCorrectlyMergedList(
List <RaidenDelta> delta,
RaidenSnapshot RaidenSnapshot,
List <TokenNetworkDelta> expected)
{
var result = RaidenHelpers.GetMergedTokenNetworkDeltas(delta, RaidenSnapshot);
Assert.That(result, Is.EquivalentTo(expected));
}
public static async Task <IActionResult> Run(
[HttpTrigger(AuthorizationLevel.Anonymous, "get", Route = "v1/tokenNetwork/{tnAddress}/{timestamp}")] HttpRequest req,
string tnAddress,
long timestamp,
ILogger log
)
{
var client = new MongoClient(MongoDbConnectionString);
log.LogInformation($"{DateTime.UtcNow} INFO Retrievieng Nearest State.");
var(nearestTnState, states) = await RetrieveNearestState(timestamp, tnAddress, client);
if (RaidenHelpers.TimestampsAreClose(nearestTnState.StateTimestamp, timestamp))
{
log.LogInformation($"{DateTime.UtcNow} INFO A near enough state was already available.");
return(new OkObjectResult(nearestTnState));
}
log.LogInformation($"{DateTime.UtcNow} INFO Computing Delta.");
var(delta, aggregates) =
await RaidenHelpers.RetrieveDelta <TokenNetworkDelta>(
nearestTnState.StateTimestamp,
timestamp,
client,
DatabaseName,
TokenNetworkAggregateCollection
);
var tnStates =
nearestTnState
.TokenNetworkDeltas
.OrderByDescending(s => s.BlockNumber)
.ToList();
var howManyToRemove = delta.Count() - 1;
var howManyToRetain = nearestTnState.TokenNetworkDeltas.Count() - delta.Count();
// Remove unneded aggregates
tnStates.RemoveRange(howManyToRetain, howManyToRemove);
tnStates.AddRange(delta);
nearestTnState.TokenNetworkDeltas = tnStates;
nearestTnState.StateBlockNumber = delta.Max(x => x.BlockNumber);
nearestTnState.StateTimestamp = delta.Max(x => x.Timestamp);
nearestTnState.Channels = RaidenHelpers.GetMergedChannels(delta, nearestTnState);
nearestTnState.MongoId = new ObjectId();
log.LogInformation($"{DateTime.UtcNow} INFO Inserting newly computed state in database");
// Could run in a separate Task
await states.InsertOneAsync(nearestTnState);
log.LogInformation($"{DateTime.UtcNow} INFO Returning computed state.");
return(new OkObjectResult(nearestTnState));
}
