public void Dequeue(WebQItem item)
{
if (!_waitingInQueue.HasValue) return;
if (!_waitingInQueue.Value) return;
var request = WebRequest.Create(new Uri(_webQAddress, item.Environment + "/" + item.Id));
request.Method = "DELETE";
request.ContentLength = 0;
using(request.GetResponse())
_waitingInQueue = false;
}
public void WaitInQueue(TimeSpan timeout)
{
const string positionMessage = "Waiting in deployment queue. There are {0} deployment(s) ahead of you.";
var timeForTimeout = DateTime.Now + timeout;
_item = _client.Enqueue(_environment);
OnWebQueuePositionUpdate(this, new WebQueueEventArgs(string.Format(positionMessage, _item.Position), _item));
if (_item.Position == 0)
{
_client.SetAsStarted(_item);
return;
}
var currentPosition = _item.Position;
do
{
Thread.Sleep(_refreshInterval);
_item = _client.Peek(_item);
if(currentPosition != _item.Position)
{
currentPosition = _item.Position;
if (currentPosition == 0) break;
OnWebQueuePositionUpdate(this, new WebQueueEventArgs(string.Format(positionMessage, currentPosition), _item));
}
if (DateTime.Now > timeForTimeout)
{
try
{
_client.Dequeue(_item);
}
catch
{
throw new TimeoutException("ConDep timed out waiting in queue and failed to remove itself from the queue.");
}
throw new TimeoutException("ConDep timed out waiting in queue.");
}
OnWebQueueTimeoutUpdate(this, new WebQueueEventArgs(string.Format("Will wait in queue for {0} minutes before timing out.", (timeForTimeout - DateTime.Now).ToString("c", CultureInfo.CurrentCulture)), _item));
} while (true);
_item = _client.SetAsStarted(_item);
}
public WebQItem Peek(WebQItem item)
{
try
{
var request = WebRequest.Create(new Uri(_webQAddress, item.Environment + "/" + item.Id));
request.Method = "GET";
request.ContentLength = 0;
using(var response = request.GetResponse())
{
var serializer = new DataContractJsonSerializer(typeof(WebQItem));
using(var stream = response.GetResponseStream())
{
if (stream != null)
{
return serializer.ReadObject(stream) as WebQItem;
}
return item;
}
}
}
catch (WebException webEx)
{
if (webEx.Status == WebExceptionStatus.ProtocolError && webEx.Response != null)
{
var exResponse = (HttpWebResponse)webEx.Response;
if (exResponse.StatusCode == HttpStatusCode.NotFound)
{
throw new WebQItemNoLongerInQueueException();
}
}
throw;
}
}
public WebQItem SetAsStarted(WebQItem item)
{
var request = WebRequest.Create(new Uri(_webQAddress, item.Environment + "/" + item.Id));
request.Method = "POST";
request.ContentLength = 0;
using(var response = request.GetResponse())
{
var serializer = new DataContractJsonSerializer(typeof(WebQItem));
using(var stream = response.GetResponseStream())
{
if (stream != null)
{
return serializer.ReadObject(stream) as WebQItem;
}
return item;
}
}
}
public WebQItem Enqueue(string environment)
{
if (string.IsNullOrWhiteSpace(environment))
{
_eventLog.WriteEntry("Environment argument is null or empty.", EventLogEntryType.Error);
return null;
}
List<WebQItem> env;
if (_environments.ContainsKey(environment.ToLower()))
{
env = _environments[environment.ToLower()];
}
else
{
env = new List<WebQItem>();
_environments.Add(environment.ToLower(), env);
}
var item = new WebQItem {Id = Guid.NewGuid().ToString(), Environment = environment, CreatedTime = DateTime.Now};
env.Add(item);
item.Position = env.IndexOf(item);
Save();
return item;
}
public WebQueueEventArgs(string message, WebQItem item)
{
_message = message;
_item = item;
}
public static HttpStatusCode Created(HttpListenerContext context, WebQItem item)
{
var serializer = new DataContractJsonSerializer(item.GetType());
serializer.WriteObject(context.Response.OutputStream, item);
return HttpStatusCode.Created;
}
public WebQItem SetAsStarted(WebQItem item)
{
item.StartTime = DateTime.Now;
return item;
}
public WebQItem Peek(WebQItem item)
{
item.Position--;
return item;
}
public void Dequeue(WebQItem item)
{
}