public override Tuple Take(Tuple tuple)
{
var request = new TakeRequest(ClientRequestSeqNumber, EndpointURL, tuple);
Log("[SEQ:" + ClientRequestSeqNumber + "] Take: " + tuple);
return(SendBlockingRequest(request));
}
public void VisitTake(Take take)
{
ClientResponse clientResponse;
do
{
clientResponse = null;
TakeRequest readRequest = new TakeRequest(this.client.Id, this.client.GetRequestNumber(), take.Tuple);
while (clientResponse == null)
{
clientResponse = (ClientResponse)this.messageServiceClient.Request(
readRequest,
this.client.Leader,
Timeout.TIMEOUT_SMR_CLIENT);
if (clientResponse != null)
{
break;
}
this.client.DoHandShake();
}
if (clientResponse.Result == null)
{
Thread.Sleep(Timeout.TIMEOUT_SMR_CLIENT_WAIT);
}
} while (clientResponse.Result == null);
Console.WriteLine($"Take tuple = {clientResponse.Result}");
}
public void VisitTake(Take take)
{
string tupleToTake;
// First phase: Lock and choose a tuple from intersection
while (true)
{
IResponse[] responses = this.GetAndLock(take);
List <List <string> > intersection = new List <List <string> >();
foreach (IResponse response in responses)
{
if (response != null && ((GetAndLockResponse)response).Tuples.Count > 0)
{
intersection.Add(((GetAndLockResponse)response).Tuples);
}
}
List <string> intersectTuples = ListUtils.IntersectLists(intersection);
if (intersectTuples.Count <= 0)
{
UnlockRequest unlockRequest = new UnlockRequest(
this.client.ViewNumber,
this.client.Id,
this.client.GetRequestNumber());
this.messageServiceClient.RequestMulticast(
unlockRequest,
this.client.ViewServers,
this.client.ViewServers.Length,
-1,
false);
Log.Debug("Take intersection is empty. Needs to be requested again.");
Thread.Sleep(Timeout.TIMEOUT_XL_CLIENT_WAIT);
}
else
{
tupleToTake = intersectTuples[0];
break;
}
}
// Second phase: Take
TakeRequest takeRequest = new TakeRequest(
this.client.ViewNumber,
this.client.Id,
this.client.GetRequestNumber(),
tupleToTake);
this.RequestMulticast(takeRequest);
Console.WriteLine($"Take tuple = {tupleToTake}");
}
public override Tuple Take(Tuple tuple)
{
int timeStep = 250; // ms
List <Message> messages = null;
Message resultMessage = null;
List <Tuple> intersection = new List <Tuple>();
Tuple selectedTuple = new Tuple(new List <object>());
// PHASE 1
var takeRequest = new TakeRequest(ClientRequestSeqNumber, EndpointURL, tuple);
// wait for all responses
MulticastMessageWaitAll(View.Nodes, takeRequest);
WaitMessage(takeRequest, View.Nodes);
ClientRequestSeqNumber++;
lock (ReplyResultQueue)
{
ReplyResultQueue.TryGetValue(takeRequest, out var replyResult);
messages = new List <Message>(replyResult?.GetAllResults());
}
// get the intersection
Response response;
intersection = ((Response)messages.First()).Tuples;
foreach (Message msg in messages)
{
response = (Response)msg;
intersection = new List <Tuple>(intersection.Intersect(response.Tuples));
}
// choose random tuple from intersection
selectedTuple = intersection.ElementAt((new Random()).Next(0, intersection.Count));
// phase 2, issue a take remove and wait for all acks
Message takeRemove = new TakeRemove(EndpointURL, selectedTuple, takeRequest.SeqNum);
MulticastMessageWaitAll(View.Nodes, takeRemove);
WaitMessage(takeRemove, View.Nodes);
return(selectedTuple);
}
public IResponse VisitTakeRequest(TakeRequest takeRequest)
{
if (!this.replicaState.IAmTheLeader())
{
// I'm not the leader.
return(null);
}
ProcessRequest runProcessRequestProtocol = this.RunProcessRequestProtocol(takeRequest);
if (runProcessRequestProtocol == ProcessRequest.DROP)
{
return(null);
}
if (runProcessRequestProtocol == ProcessRequest.LAST_EXECUTION)
{
return(this.replicaState.ClientTable[takeRequest.ClientId].Item2);
}
return(null);
}
public IResponse VisitTakeRequest(TakeRequest takeRequest)
{
return(this.WaitNormalState(takeRequest));
}
public JsonResult GetTake(TakeRequest request)
{
return(Json(bll.GetTake(request)));
}
public IResponse VisitTakeRequest(TakeRequest takeRequest)
{
return(ExecuteRequest(takeRequest, new TakeExecutor(takeRequest)));
}
/// <summary>
/// 口味下拉框
/// </summary>
/// <param name="request"></param>
/// <returns></returns>
public TakeResponse GetTake(TakeRequest request)
{
return(ApiRequestHelper.Post <TakeRequest, TakeResponse>(request));
}
