コード例 #1
0
        protected override async Task<Lease> AcquireLease()
        {
            var now = DateTimeOffset.UtcNow;

            var resource = leasableResources
                .Where(l => l.LeaseLastReleased + waitInterval < now)
                .OrderBy(l => l.LeaseLastReleased)
                .FirstOrDefault(l => !workInProgress.ContainsKey(l));

            if (resource == null)
            {
                return null;
            }

            var lease = new Lease(resource,
                                  resource.DefaultLeaseDuration);

            if (workInProgress.TryAdd(resource, lease))
            {
                lease.LeasableResource.LeaseLastGranted = now;

                return lease;
            }

            return null;
        }
コード例 #2
0
        protected override async Task ReleaseLease(Lease lease)
        {
            lease.NotifyCompleted();

            if (!workInProgress.Values.Any(l => l.GetHashCode().Equals(lease.GetHashCode())))
            {
                Debug.WriteLine("[Distribute] ReleaseLease (failed): " + lease);
                return;
            }

            Lease _;

            if (workInProgress.TryRemove(lease.LeasableResource, out _))
            {
                lease.LeasableResource.LeaseLastReleased = DateTimeOffset.UtcNow;
                Debug.WriteLine("[Distribute] ReleaseLease: " + lease);
            }
        }
コード例 #3
0
 protected abstract Task ReleaseLease(Lease lease);