public async Task <IActionResult> Edit(int id, [Bind("Id,ApplicationId,BreweryId")] CollaborationRequest collaborationRequest)
{
if (id != collaborationRequest.Id)
{
return(NotFound());
}
if (ModelState.IsValid)
{
try
{
_context.Update(collaborationRequest);
await _context.SaveChangesAsync();
}
catch (DbUpdateConcurrencyException)
{
if (!CollaborationRequestExists(collaborationRequest.Id))
{
return(NotFound());
}
else
{
throw;
}
}
return(RedirectToAction(nameof(Index)));
}
ViewData["ApplicationId"] = new SelectList(_context.ApplicationUser, "Id", "Id", collaborationRequest.SenderId);
ViewData["BreweryId"] = new SelectList(_context.Brewery, "Id", "Id", collaborationRequest.ReceiverId);
return(View(collaborationRequest));
}
internal void AddSubscriber(CollaborationRequest collaborationRequest, Subscriber subscriber)
{
var subscriberList = subscribers.GetOrAdd(collaborationRequest, request => new ConcurrentBag <Subscriber>());
subscriberList.Add(subscriber);
SubscriptionRequested?.Invoke(this, subscriber);
}
internal void HandleStopCollaboration(CollaborationRequest collaborationRequest)
{
StopCollaborationRequested?.Invoke(this, collaborationRequest);
lock (collaborationRequestLock)
{
currentCollaborationRequest = null;
}
}
private static void OnCollaborationRequestAccepted(object sender, CollaborationRequest request)
{
Console.ForegroundColor = ConsoleColor.Green;
Console.WriteLine($"A collaboration request arrived from {request.SenderName} ({request.SenderAddress}) for file {request.Filename}, starting work now...");
Console.ResetColor();
//TODO: this call should be made only if this application actually wants to collaborate
//In this example, let's collaborate only if we're not working on a file ourselves
workCancellationTokenSource = new CancellationTokenSource();
PerformWorkOnFile(request.Filename, workCancellationTokenSource.Token);
}
internal void AddCollabConstraints(Constant targetAgent, Action collabAction, Constant senderAgent)
{
CollaborationRequest cr = new CollaborationRequest();
cr.CollaborationRequired = collabAction;
cr.Sender = senderAgent;
cr.Receiver = targetAgent;
CollborationRequests.Add(cr);
}
private bool SwitchCollaborationRequest(CollaborationRequest request)
{
lock (collaborationRequestLock)
{
if (currentCollaborationRequest != null)
{
return(false);
}
currentCollaborationRequest = request;
return(true);
}
}
private void NotifySubscribersTheyShouldStopCollaborating(CollaborationRequest collaborationRequest)
{
bool couldRemove = subscribers.TryRemove(collaborationRequest, out ConcurrentBag <Subscriber> subscribersList);
if (!couldRemove)
{
return;
}
foreach (var subscriber in subscribersList)
{
NotifySubscriberToStopCollaborating(collaborationRequest, subscriber);
SubscriberNotifiedToStopCollaborating?.Invoke(this, subscriber);
}
}
public IActionResult Create(int id)
{
List <BeerStyle> li = new List <BeerStyle>();
li = _context.BeerStyle.ToList();
ViewBag.listofitems = li;
CollaborationRequest currentRequest = _context.CollaborationRequest.Where(cr => cr.Id == id).FirstOrDefault();
ViewModels.CollabBeersViewModel collabBeersViewModel = new ViewModels.CollabBeersViewModel
{
BeerStyles = li,
CollaborationRequest = currentRequest
};
return(View(collabBeersViewModel));
}
private void NotifySubscriberToStopCollaborating(CollaborationRequest request, Subscriber subscriber)
{
//Create a WCF client by indicating A-B-C: Address, Binding, Contract
//Address
var serviceAddress = GetCollaborationServiceAddress(subscriber.Address, unicastPort);
//Binding
NetTcpBinding tcpBinding = new NetTcpBinding();
tcpBinding.Security.Mode = SecurityMode.None;
tcpBinding.Security.Message.ClientCredentialType = MessageCredentialType.None;
//Create the ChannelFactory by indicating the Contract (i.e. the service interface)
ChannelFactory <ISubscriptionService> factory = new ChannelFactory <ISubscriptionService>(tcpBinding, new EndpointAddress(serviceAddress));
//Open the channel and send the request
ISubscriptionService proxy = factory.CreateChannel();
proxy.StopCollaborating(request);
factory.Close();
}
public void StopCollaboration()
{
CollaborationRequest collaborationRequest;
lock (collaborationRequestLock)
{
collaborationRequest = currentCollaborationRequest;
currentCollaborationRequest = null;
}
if (collaborationRequest == null)
{
return;
}
var localAddress = networkAddress.GetLocalAddress();
if (collaborationRequest.SenderAddress.Equals(localAddress))
{
NotifySubscribersTheyShouldStopCollaborating(collaborationRequest);
}
}
// GET: CollaborationRequests/Delete/5
public async Task <IActionResult> Delete(int?id, CollaborationRequest collaborationRequest)
{
if (id == null)
{
return(NotFound());
}
CollaborationRequest collabReq = _context.CollaborationRequest.Where(i => i.Id == id).SingleOrDefault();
collabReq = await _context.CollaborationRequest
.Include(c => c.SenderId)
.Include(c => c.ReceiverId)
.FirstOrDefaultAsync(m => m.Id == id);
if (collaborationRequest == null)
{
return(NotFound());
}
return(View(collaborationRequest));
}
internal void HandleCollaborationRequest(CollaborationRequest request)
{
var localAddress = networkAddress.GetLocalAddress();
if (request.SenderAddress.Equals(localAddress))
{
//It originated from myself, just discard it
//When broadcasting, the sender also receives its own message
return;
}
if (SwitchCollaborationRequest(request))
{
SubscribeCollaborator(request);
CollaborationRequestAccepted?.Invoke(this, request);
}
else
{
CollaborationRequestDeclined?.Invoke(this, request);
}
}
//// POST: CollaborationRequests/Create
//// To protect from overposting attacks, please enable the specific properties you want to bind to, for
//// more details see http://go.microsoft.com/fwlink/?LinkId=317598.
//[HttpPost]
//[ValidateAntiForgeryToken]
//public async Task<IActionResult> Create([Bind("Id,ApplicationId,BreweryId")] CollaborationRequest collaborationRequest)
//{
// if (ModelState.IsValid)
// {
// _context.Add(collaborationRequest);
// await _context.SaveChangesAsync();
// return RedirectToAction(nameof(Index));
// }
// ViewData["ApplicationId"] = new SelectList(_context.ApplicationUser, "Id", "Id", collaborationRequest.ApplicationId);
// ViewData["BreweryId"] = new SelectList(_context.Brewery, "Id", "Id", collaborationRequest.BreweryId);
// return View(collaborationRequest);
//}
public IActionResult SendCollaborationRequest(int id)
{
//instatiate a follow
CollaborationRequest collaborationRequest = new CollaborationRequest();
//set applicationid as fk
string userId = User.FindFirst(ClaimTypes.NameIdentifier).Value;
Brewery loggedInBrewery = _context.Brewery.Where(i => i.ApplicationId == userId).SingleOrDefault();
collaborationRequest.SenderId = loggedInBrewery.Id;
collaborationRequest.SenderName = loggedInBrewery.Name;
Brewery receivingBrewery = _context.Brewery.Where(i => i.Id == id).SingleOrDefault();
//set breweryid as fk
collaborationRequest.ReceiverId = id;
collaborationRequest.ReceiverName = receivingBrewery.Name;
//add to table
_context.Add(collaborationRequest);
//save changes
_context.SaveChanges();
//return to same view (redirect to index action)
return(RedirectToAction("Index", "Breweries"));
}
// PUT: api/CollaborationRequests/5
public void Put(Guid id, [FromBody] CollaborationRequest value)
{
db.Entry(value).State = System.Data.Entity.EntityState.Modified;
db.SaveChanges();
}
public void StopCollaborating(CollaborationRequest collaborationRequest)
{
collaborationRequest.SenderAddress = GetClientIp();
client.HandleStopCollaboration(collaborationRequest);
}
private static void OnStopCollaborationRequested(object sender, CollaborationRequest request)
{
Console.WriteLine($"We were asked to stop our collaboration on file {request.Filename}, stopping work now...");
workCancellationTokenSource?.Cancel();
WriteInstructions();
}
private static void OnCollaborationRequestDeclined(object sender, CollaborationRequest request)
{
Console.WriteLine($"A collaboration request arrived from {request.SenderName} ({request.SenderAddress}), but it was declined since we're already busy");
}
// POST: api/CollaborationRequests
public void Post([FromBody] CollaborationRequest value)
{
db.CollaborationRequests.Add(value);
db.SaveChanges();
}
public void SubscribeCollaborator(CollaborationRequest request, Subscriber subscriber)
{
request.SenderAddress = subscriber.Address = GetClientIp();
client.AddSubscriber(request, subscriber);
}
public void BroadcastCollaborationRequest(CollaborationRequest request)
{
request.SenderAddress = GetClientIp();
client.HandleCollaborationRequest(request);
}