/// <summary>
/// Removes associations with all blocking requests and throws an exception.
/// </summary>
private void CleanupForCircularDependencyAndThrow(SchedulableRequest requestCausingFailure, List <SchedulableRequest> ancestors)
{
if (_requestsWeAreBlockedBy.Count != 0)
{
List <SchedulableRequest> tempRequests = new List <SchedulableRequest>(_requestsWeAreBlockedBy.Values);
foreach (SchedulableRequest requestWeAreBlockedBy in tempRequests)
{
BlockingRequestKey key = new BlockingRequestKey(requestWeAreBlockedBy.BuildRequest);
DisconnectRequestWeAreBlockedBy(key);
}
}
else
{
ChangeToState(SchedulableRequestState.Ready);
}
_activeTargetsWhenBlocked = null;
// The blocking request itself is no longer valid if it was unscheduled.
if (requestCausingFailure.State == SchedulableRequestState.Unscheduled)
{
requestCausingFailure.Delete();
}
throw new SchedulerCircularDependencyException(requestCausingFailure.BuildRequest, ancestors);
}
/// <summary>
/// Removes the association between this request and the one we are blocked by.
/// </summary>
private void DisconnectRequestWeAreBlockedBy(BlockingRequestKey blockingRequestKey)
{
ErrorUtilities.VerifyThrow(_requestsWeAreBlockedBy.ContainsKey(blockingRequestKey), "We are not blocked by the specified request.");
SchedulableRequest unblockingRequest = _requestsWeAreBlockedBy[blockingRequestKey];
ErrorUtilities.VerifyThrow(unblockingRequest._requestsWeAreBlocking.Contains(this), "The request unblocking us doesn't think it is blocking us.");
_requestsWeAreBlockedBy.Remove(blockingRequestKey);
unblockingRequest._requestsWeAreBlocking.Remove(this);
// If the request we are blocked by also happens to be unscheduled, remove it as well so we don't try to run it later. This is
// because circular dependency errors cause us to fail all outstanding requests on the current request. See BuildRequsetEntry.ReportResult.
if (unblockingRequest.State == SchedulableRequestState.Unscheduled)
{
unblockingRequest.Delete();
}
if (_requestsWeAreBlockedBy.Count == 0)
{
ChangeToState(SchedulableRequestState.Ready);
}
}
/// <summary>
/// Removes associations with all blocking requests and throws an exception.
/// </summary>
private void CleanupForCircularDependencyAndThrow(SchedulableRequest requestCausingFailure, List<SchedulableRequest> ancestors)
{
if (_requestsWeAreBlockedBy.Count != 0)
{
List<SchedulableRequest> tempRequests = new List<SchedulableRequest>(_requestsWeAreBlockedBy.Values);
foreach (SchedulableRequest requestWeAreBlockedBy in tempRequests)
{
BlockingRequestKey key = new BlockingRequestKey(requestWeAreBlockedBy.BuildRequest);
DisconnectRequestWeAreBlockedBy(key);
}
}
else
{
ChangeToState(SchedulableRequestState.Ready);
}
_activeTargetsWhenBlocked = null;
// The blocking request itself is no longer valid if it was unscheduled.
if (requestCausingFailure.State == SchedulableRequestState.Unscheduled)
{
requestCausingFailure.Delete();
}
throw new SchedulerCircularDependencyException(requestCausingFailure.BuildRequest, ancestors);
}
