private OperationResponse ItemOperationSubscribeItem(Item item, SubscribeItem operation) { if (item.Disposed) { return operation.GetOperationResponse((int)ReturnCode.ItemNotFound, "ItemNotFound"); } this.interestItems.SubscribeItem(item); var subscribeEvent = new ItemSubscribed { ItemId = item.Id, ItemType = item.Type, Position = item.Position, PropertiesRevision = item.PropertiesRevision, Rotation = item.Rotation }; var eventData = new EventData((byte)EventCode.ItemSubscribed, subscribeEvent); this.Peer.SendEvent(eventData, new SendParameters { ChannelId = Settings.ItemEventChannel }); if (operation.PropertiesRevision.HasValue == false || operation.PropertiesRevision.Value != item.PropertiesRevision) { var properties = new ItemPropertiesSet { ItemId = item.Id, PropertiesRevision = item.PropertiesRevision, PropertiesSet = new Hashtable(item.Properties) }; var propEventData = new EventData((byte)EventCode.ItemPropertiesSet, properties); this.Peer.SendEvent(propEventData, new SendParameters { ChannelId = Settings.ItemEventChannel }); } // don't send response operation.OnComplete(); return null; }
/// <summary> /// Handles operation SubscribeItem: Manually subscribes item (does not affect interest area updates). /// The client receives event ItemSubscribed on success. /// </summary> /// <remarks> /// If the submitted SubscribeItem.PropertiesRevision is null or smaller than the item Item.PropertiesRevision event ItemProperties is sent to the client. /// </remarks> public OperationResponse OperationSubscribeItem(PeerBase peer, OperationRequest request, SendParameters sendParameters) { var operation = new SubscribeItem(peer.Protocol, request); if (!operation.IsValid) { return new OperationResponse(request.OperationCode) { ReturnCode = (int)ReturnCode.InvalidOperationParameter, DebugMessage = operation.GetErrorMessage() }; } operation.OnStart(); Item item; bool actorItem = this.TryGetItem(operation.ItemId, out item); if (actorItem == false) { if (this.World.ItemCache.TryGetItem(operation.ItemId, out item) == false) { return operation.GetOperationResponse((int)ReturnCode.ItemNotFound, "ItemNotFound"); } } if (actorItem) { // we are already in the item thread, invoke directly return this.ItemOperationSubscribeItem(item, operation); } else { // second parameter (peer) allows us to send an error event to the client (in case of an error) item.Fiber.Enqueue(() => this.ExecItemOperation(() => this.ItemOperationSubscribeItem(item, operation), sendParameters)); // operation continues later return null; } }