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802
Esiur/Net/IIP/DistributedConnectionProtocol.cs
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802
Esiur/Net/IIP/DistributedConnectionProtocol.cs
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@ -0,0 +1,802 @@
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using Esiur.Data;
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using Esiur.Engine;
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using Esiur.Net.Packets;
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using Esiur.Resource;
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using Esiur.Resource.Template;
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Reflection;
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using System.Text;
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using System.Threading.Tasks;
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namespace Esiur.Net.IIP
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{
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partial class DistributedConnection
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{
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KeyList<uint, DistributedResource> resources = new KeyList<uint, DistributedResource>();
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KeyList<uint, AsyncReply<DistributedResource>> resourceRequests = new KeyList<uint, AsyncReply<DistributedResource>>();
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KeyList<Guid, AsyncReply<ResourceTemplate>> templateRequests = new KeyList<Guid, AsyncReply<ResourceTemplate>>();
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KeyList<string, AsyncReply<IResource>> pathRequests = new KeyList<string, AsyncReply<IResource>>();
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Dictionary<Guid, ResourceTemplate> templates = new Dictionary<Guid, ResourceTemplate>();
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KeyList<uint, AsyncReply<object[]>> requests = new KeyList<uint, AsyncReply<object[]>>();
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uint callbackCounter = 0;
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AsyncQueue<DistributedResourceQueueItem> queue = new AsyncQueue<DistributedResourceQueueItem>();
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/// <summary>
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/// Send IIP request.
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/// </summary>
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/// <param name="action">Packet action.</param>
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/// <param name="args">Arguments to send.</param>
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/// <returns></returns>
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internal AsyncReply<object[]> SendRequest(IIPPacket.IIPPacketAction action, params object[] args)
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{
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var reply = new AsyncReply<object[]>();
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callbackCounter++;
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var bl = new BinaryList((byte)(0x40 | (byte)action), callbackCounter);
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bl.AddRange(args);
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Send(bl.ToArray());
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requests.Add(callbackCounter, reply);
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return reply;
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}
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void IIPReply(uint callbackId, params object[] results)
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{
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var req = requests.Take(callbackId);
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req?.Trigger(results);
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}
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void IIPEventResourceReassigned(uint resourceId, uint newResourceId)
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{
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}
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void IIPEventResourceDestroyed(uint resourceId)
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{
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if (resources.Contains(resourceId))
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{
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var r = resources[resourceId];
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resources.Remove(resourceId);
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r.Destroy();
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}
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}
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void IIPEventPropertyUpdated(uint resourceId, byte index, byte[] content)
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{
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if (resources.Contains(resourceId))
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{
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// push to the queue to gaurantee serialization
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var reply = new AsyncReply<DistributedResourceQueueItem>();
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queue.Add(reply);
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var r = resources[resourceId];
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Codec.Parse(content, 0, this).Then((arguments) =>
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{
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var pt = r.Template.GetPropertyTemplate(index);
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if (pt != null)
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{
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reply.Trigger(new DistributedResourceQueueItem((DistributedResource)r, DistributedResourceQueueItem.DistributedResourceQueueItemType.Propery, arguments, index));
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}
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else
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{ // ft found, fi not found, this should never happen
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queue.Remove(reply);
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}
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});
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}
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}
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void IIPEventEventOccured(uint resourceId, byte index, byte[] content)
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{
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if (resources.Contains(resourceId))
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{
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// push to the queue to gaurantee serialization
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var reply = new AsyncReply<DistributedResourceQueueItem>();
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var r = resources[resourceId];
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queue.Add(reply);
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Codec.ParseVarArray(content, this).Then((arguments) =>
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{
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var et = r.Template.GetEventTemplate(index);
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if (et != null)
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{
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reply.Trigger(new DistributedResourceQueueItem((DistributedResource)r, DistributedResourceQueueItem.DistributedResourceQueueItemType.Event, arguments, index));
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}
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else
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{ // ft found, fi not found, this should never happen
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queue.Remove(reply);
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}
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});
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}
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}
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void IIPRequestAttachResource(uint callback, uint resourceId)
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{
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Warehouse.Get(resourceId).Then((res) =>
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{
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if (res != null)
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{
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var r = res as IResource;
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r.Instance.ResourceEventOccured += Instance_EventOccured;
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r.Instance.ResourceModified += Instance_PropertyModified;
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r.Instance.ResourceDestroyed += Instance_ResourceDestroyed;
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var link = DC.ToBytes(r.Instance.Link);
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// reply ok
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SendParams((byte)0x80, callback, r.Instance.Template.ClassId, r.Instance.Age, (ushort)link.Length, link, Codec.ComposeVarArray(r.Instance.Serialize(), this, true));
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}
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else
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{
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// reply failed
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//SendParams(0x80, r.Instance.Id, r.Instance.Age, r.Instance.Serialize(false, this));
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}
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});
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}
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void IIPRequestReattachResource(uint callback, uint resourceId, uint resourceAge)
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{
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Warehouse.Get(resourceId).Then((res) =>
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{
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if (res != null)
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{
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var r = res as IResource;
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r.Instance.ResourceEventOccured += Instance_EventOccured;
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r.Instance.ResourceModified += Instance_PropertyModified;
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r.Instance.ResourceDestroyed += Instance_ResourceDestroyed;
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// reply ok
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SendParams((byte)0x81, callback, r.Instance.Age, Codec.ComposeVarArray(r.Instance.Serialize(), this, true));
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}
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else
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{
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// reply failed
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}
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});
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}
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void IIPRequestDetachResource(uint callback, uint resourceId)
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{
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Warehouse.Get(resourceId).Then((res) =>
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{
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if (res != null)
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{
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var r = res as IResource;
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r.Instance.ResourceEventOccured -= Instance_EventOccured;
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r.Instance.ResourceModified -= Instance_PropertyModified;
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r.Instance.ResourceDestroyed -= Instance_ResourceDestroyed;
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// reply ok
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SendParams((byte)0x82, callback);
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}
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else
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{
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// reply failed
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}
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});
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}
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void IIPRequestCreateResource(uint callback, string className)
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{
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// not implemented
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}
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void IIPRequestDeleteResource(uint callback, uint resourceId)
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{
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// not implemented
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}
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void IIPRequestTemplateFromClassName(uint callback, string className)
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{
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Warehouse.GetTemplate(className).Then((t) =>
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{
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if (t != null)
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SendParams((byte)0x88, callback, t.Content);
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else
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{
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// reply failed
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}
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});
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}
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void IIPRequestTemplateFromClassId(uint callback, Guid classId)
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{
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Warehouse.GetTemplate(classId).Then((t) =>
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{
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if (t != null)
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SendParams((byte)0x89, callback, (uint)t.Content.Length, t.Content);
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else
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{
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// reply failed
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}
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});
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}
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void IIPRequestTemplateFromResourceLink(uint callback, string resourceLink)
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{
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Warehouse.GetTemplate(resourceLink).Then((t) =>
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{
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if (t != null)
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SendParams((byte)0x8A, callback, t.Content);
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else
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{
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// reply failed
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}
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});
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}
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void IIPRequestTemplateFromResourceId(uint callback, uint resourceId)
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{
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Warehouse.Get(resourceId).Then((r) =>
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{
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if (r != null)
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SendParams((byte)0x8B, callback, r.Instance.Template.Content);
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else
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{
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// reply failed
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}
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});
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}
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void IIPRequestResourceIdFromResourceLink(uint callback, string resourceLink)
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{
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Warehouse.Get(resourceLink).Then((r) =>
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{
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if (r != null)
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SendParams((byte)0x8C, callback, r.Instance.Template.ClassId, r.Instance.Id, r.Instance.Age);
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else
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{
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// reply failed
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}
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});
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}
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void IIPRequestInvokeFunction(uint callback, uint resourceId, byte index, byte[] content)
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{
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Warehouse.Get(resourceId).Then((r) =>
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{
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if (r != null)
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{
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Codec.ParseVarArray(content, this).Then(async (arguments) =>
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{
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var ft = r.Instance.Template.GetFunctionTemplate(index);
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if (ft != null)
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{
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if (r is DistributedResource)
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{
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var rt = (r as DistributedResource)._Invoke(index, arguments);
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if (rt != null)
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{
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rt.Then(res =>
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{
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SendParams((byte)0x90, callback, Codec.Compose(res, this));
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});
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}
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else
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{
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// function not found on a distributed object
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}
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}
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else
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{
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#if NETSTANDARD1_5
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var fi = r.GetType().GetTypeInfo().GetMethod(ft.Name);
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#else
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var fi = r.GetType().GetMethod(ft.Name);
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#endif
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if (fi != null)
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{
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// cast shit
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ParameterInfo[] pi = fi.GetParameters();
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object[] args = null;
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if (pi.Length > 0)
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{
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int argsCount = pi.Length;
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args = new object[pi.Length];
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if (pi[pi.Length - 1].ParameterType == typeof(DistributedConnection))
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{
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args[--argsCount] = this;
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}
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if (arguments != null)
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{
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for (int i = 0; i < argsCount && i < arguments.Length; i++)
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{
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args[i] = DC.CastConvert(arguments[i], pi[i].ParameterType);
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}
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}
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}
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var rt = fi.Invoke(r, args);
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if (rt is Task)
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{
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var t = (Task)rt;
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//Console.WriteLine(t.IsCompleted);
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await t;
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#if NETSTANDARD1_5
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var res = t.GetType().GetTypeInfo().GetProperty("Result").GetValue(t);
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#else
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var res = t.GetType().GetProperty("Result").GetValue(t);
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#endif
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SendParams((byte)0x90, callback, Codec.Compose(res, this));
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}
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else if (rt is AsyncReply) //(rt.GetType().IsGenericType && (rt.GetType().GetGenericTypeDefinition() == typeof(AsyncReply<>)))
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{
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(rt as AsyncReply).Then(res =>
|
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{
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SendParams((byte)0x90, callback, Codec.Compose(res, this));
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});
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}
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else
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{
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SendParams((byte)0x90, callback, Codec.Compose(rt, this));
|
||||
}
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}
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||||
else
|
||||
{
|
||||
// ft found, fi not found, this should never happen
|
||||
}
|
||||
}
|
||||
}
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else
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{
|
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// no function at this index
|
||||
}
|
||||
});
|
||||
}
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||||
else
|
||||
{
|
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// no resource with this id
|
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}
|
||||
});
|
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}
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void IIPRequestGetProperty(uint callback, uint resourceId, byte index)
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{
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Warehouse.Get(resourceId).Then((r) =>
|
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{
|
||||
if (r != null)
|
||||
{
|
||||
var pt = r.Instance.Template.GetFunctionTemplate(index);
|
||||
if (pt != null)
|
||||
{
|
||||
if (r is DistributedResource)
|
||||
{
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||||
SendParams((byte)0x91, callback, Codec.Compose((r as DistributedResource)._Get(pt.Index), this));
|
||||
}
|
||||
else
|
||||
{
|
||||
#if NETSTANDARD1_5
|
||||
var pi = r.GetType().GetTypeInfo().GetProperty(pt.Name);
|
||||
#else
|
||||
var pi = r.GetType().GetProperty(pt.Name);
|
||||
#endif
|
||||
|
||||
if (pi != null)
|
||||
{
|
||||
SendParams((byte)0x91, callback, Codec.Compose(pi.GetValue(r), this));
|
||||
}
|
||||
else
|
||||
{
|
||||
// pt found, pi not found, this should never happen
|
||||
}
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
// pt not found
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
// resource not found
|
||||
}
|
||||
});
|
||||
}
|
||||
|
||||
void IIPRequestGetPropertyIfModifiedSince(uint callback, uint resourceId, byte index, uint age)
|
||||
{
|
||||
Warehouse.Get(resourceId).Then((r) =>
|
||||
{
|
||||
if (r != null)
|
||||
{
|
||||
var pt = r.Instance.Template.GetFunctionTemplate(index);
|
||||
if (pt != null)
|
||||
{
|
||||
if (r.Instance.GetAge(index) > age)
|
||||
{
|
||||
#if NETSTANDARD1_5
|
||||
var pi = r.GetType().GetTypeInfo().GetProperty(pt.Name);
|
||||
#else
|
||||
var pi = r.GetType().GetProperty(pt.Name);
|
||||
#endif
|
||||
if (pi != null)
|
||||
{
|
||||
SendParams((byte)0x92, callback, Codec.Compose(pi.GetValue(r), this));
|
||||
}
|
||||
else
|
||||
{
|
||||
// pt found, pi not found, this should never happen
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
SendParams((byte)0x92, callback, (byte)DataType.NotModified);
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
// pt not found
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
// resource not found
|
||||
}
|
||||
});
|
||||
}
|
||||
|
||||
void IIPRequestSetProperty(uint callback, uint resourceId, byte index, byte[] content)
|
||||
{
|
||||
Warehouse.Get(resourceId).Then((r) =>
|
||||
{
|
||||
if (r != null)
|
||||
{
|
||||
|
||||
|
||||
var pt = r.Instance.Template.GetPropertyTemplate(index);
|
||||
if (pt != null)
|
||||
{
|
||||
Codec.Parse(content, 0, this).Then((value) =>
|
||||
{
|
||||
if (r is DistributedResource)
|
||||
{
|
||||
// propagation
|
||||
(r as DistributedResource)._Set(index, value).Then((x) =>
|
||||
{
|
||||
SendParams((byte)0x93, callback);
|
||||
});
|
||||
}
|
||||
else
|
||||
{
|
||||
#if NETSTANDARD1_5
|
||||
var pi = r.GetType().GetTypeInfo().GetProperty(pt.Name);
|
||||
#else
|
||||
var pi = r.GetType().GetProperty(pt.Name);
|
||||
#endif
|
||||
if (pi != null)
|
||||
{
|
||||
// cast new value type to property type
|
||||
|
||||
var v = DC.CastConvert(value, pi.PropertyType);
|
||||
pi.SetValue(r, v);
|
||||
|
||||
SendParams((byte)0x93, callback);
|
||||
}
|
||||
else
|
||||
{
|
||||
// pt found, pi not found, this should never happen
|
||||
}
|
||||
}
|
||||
|
||||
});
|
||||
}
|
||||
else
|
||||
{
|
||||
// property not found
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
// resource not found
|
||||
}
|
||||
});
|
||||
}
|
||||
|
||||
/*
|
||||
void IIPReplyAttachResource(uint callback, uint resourceAge, object[] properties)
|
||||
{
|
||||
if (requests.ContainsKey(callback))
|
||||
{
|
||||
var req = requests[callback];
|
||||
var r = resources[(uint)req.Arguments[0]];
|
||||
|
||||
if (r == null)
|
||||
{
|
||||
r.Instance.Deserialize(properties);
|
||||
r.Instance.Age = resourceAge;
|
||||
r.Attached();
|
||||
|
||||
// process stack
|
||||
foreach (var rr in resources.Values)
|
||||
rr.Stack.ProcessStack();
|
||||
}
|
||||
else
|
||||
{
|
||||
// resource not found
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
void IIPReplyReattachResource(uint callback, uint resourceAge, object[] properties)
|
||||
{
|
||||
var req = requests.Take(callback);
|
||||
|
||||
if (req != null)
|
||||
{
|
||||
var r = resources[(uint)req.Arguments[0]];
|
||||
|
||||
if (r == null)
|
||||
{
|
||||
r.Instance.Deserialize(properties);
|
||||
r.Instance.Age = resourceAge;
|
||||
r.Attached();
|
||||
|
||||
// process stack
|
||||
foreach (var rr in resources.Values)
|
||||
rr.Stack.ProcessStack();
|
||||
}
|
||||
else
|
||||
{
|
||||
// resource not found
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
void IIPReplyDetachResource(uint callback)
|
||||
{
|
||||
var req = requests.Take(callback);
|
||||
// nothing to do
|
||||
}
|
||||
|
||||
void IIPReplyCreateResource(uint callback, Guid classId, uint resourceId)
|
||||
{
|
||||
var req = requests.Take(callback);
|
||||
// nothing to do
|
||||
|
||||
}
|
||||
void IIPReplyDeleteResource(uint callback)
|
||||
{
|
||||
var req = requests.Take(callback);
|
||||
// nothing to do
|
||||
|
||||
}
|
||||
|
||||
void IIPReplyTemplateFromClassName(uint callback, ResourceTemplate template)
|
||||
{
|
||||
// cache
|
||||
if (!templates.ContainsKey(template.ClassId))
|
||||
templates.Add(template.ClassId, template);
|
||||
|
||||
var req = requests.Take(callback);
|
||||
req?.Trigger(template);
|
||||
}
|
||||
|
||||
void IIPReplyTemplateFromClassId(uint callback, ResourceTemplate template)
|
||||
{
|
||||
// cache
|
||||
if (!templates.ContainsKey(template.ClassId))
|
||||
templates.Add(template.ClassId, template);
|
||||
|
||||
var req = requests.Take(callback);
|
||||
req?.Trigger(template);
|
||||
|
||||
}
|
||||
|
||||
void IIPReplyTemplateFromResourceLink(uint callback, ResourceTemplate template)
|
||||
{
|
||||
// cache
|
||||
if (!templates.ContainsKey(template.ClassId))
|
||||
templates.Add(template.ClassId, template);
|
||||
|
||||
var req = requests.Take(callback);
|
||||
req?.Trigger(template);
|
||||
}
|
||||
|
||||
void IIPReplyTemplateFromResourceId(uint callback, ResourceTemplate template)
|
||||
{
|
||||
// cache
|
||||
if (!templates.ContainsKey(template.ClassId))
|
||||
templates.Add(template.ClassId, template);
|
||||
|
||||
var req = requests.Take(callback);
|
||||
req?.Trigger(template);
|
||||
}
|
||||
|
||||
void IIPReplyResourceIdFromResourceLink(uint callback, Guid classId, uint resourceId, uint resourceAge)
|
||||
{
|
||||
var req = requests.Take(callback);
|
||||
req?.Trigger(template);
|
||||
}
|
||||
|
||||
void IIPReplyInvokeFunction(uint callback, object returnValue)
|
||||
{
|
||||
|
||||
}
|
||||
|
||||
void IIPReplyGetProperty(uint callback, object value)
|
||||
{
|
||||
|
||||
}
|
||||
void IIPReplyGetPropertyIfModifiedSince(uint callback, object value)
|
||||
{
|
||||
|
||||
}
|
||||
void IIPReplySetProperty(uint callback)
|
||||
{
|
||||
|
||||
}
|
||||
*/
|
||||
|
||||
/// <summary>
|
||||
/// Get the ResourceTemplate for a given class Id.
|
||||
/// </summary>
|
||||
/// <param name="classId">Class GUID.</param>
|
||||
/// <returns>ResourceTemplate.</returns>
|
||||
public AsyncReply<ResourceTemplate> GetTemplate(Guid classId)
|
||||
{
|
||||
if (templates.ContainsKey(classId))
|
||||
return new AsyncReply<ResourceTemplate>(templates[classId]);
|
||||
else if (templateRequests.ContainsKey(classId))
|
||||
return templateRequests[classId];
|
||||
|
||||
var reply = new AsyncReply<ResourceTemplate>();
|
||||
templateRequests.Add(classId, reply);
|
||||
|
||||
SendRequest(IIPPacket.IIPPacketAction.TemplateFromClassId, classId).Then((rt) =>
|
||||
{
|
||||
templateRequests.Remove(classId);
|
||||
templates.Add(((ResourceTemplate)rt[0]).ClassId, (ResourceTemplate)rt[0]);
|
||||
reply.Trigger(rt[0]);
|
||||
});
|
||||
|
||||
return reply;
|
||||
}
|
||||
|
||||
// IStore interface
|
||||
/// <summary>
|
||||
/// Get a resource by its path.
|
||||
/// </summary>
|
||||
/// <param name="path">Path to the resource.</param>
|
||||
/// <returns>Resource</returns>
|
||||
public AsyncReply<IResource> Get(string path)
|
||||
{
|
||||
if (pathRequests.ContainsKey(path))
|
||||
return pathRequests[path];
|
||||
|
||||
var reply = new AsyncReply<IResource>();
|
||||
pathRequests.Add(path, reply);
|
||||
|
||||
var bl = new BinaryList(path);
|
||||
bl.Insert(0, (ushort)bl.Length);
|
||||
|
||||
SendRequest(IIPPacket.IIPPacketAction.ResourceIdFromResourceLink, bl.ToArray()).Then((rt) =>
|
||||
{
|
||||
pathRequests.Remove(path);
|
||||
//(Guid)rt[0],
|
||||
Fetch( (uint)rt[1]).Then((r) =>
|
||||
{
|
||||
reply.Trigger(r);
|
||||
});
|
||||
});
|
||||
|
||||
|
||||
return reply;
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Retrive a resource by its instance Id.
|
||||
/// </summary>
|
||||
/// <param name="iid">Instance Id</param>
|
||||
/// <returns>Resource</returns>
|
||||
public AsyncReply<IResource> Retrieve(uint iid)
|
||||
{
|
||||
foreach (var r in resources.Values)
|
||||
if (r.Instance.Id == iid)
|
||||
return new AsyncReply<IResource>(r);
|
||||
return new AsyncReply<IResource>(null);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Fetch a resource from the other end
|
||||
/// </summary>
|
||||
/// <param name="classId">Class GUID</param>
|
||||
/// <param name="id">Resource Id</param>Guid classId
|
||||
/// <returns>DistributedResource</returns>
|
||||
public AsyncReply<DistributedResource> Fetch( uint id)
|
||||
{
|
||||
if (resourceRequests.ContainsKey(id) && resources.ContainsKey(id))
|
||||
{
|
||||
// dig for dead locks
|
||||
return resourceRequests[id];
|
||||
}
|
||||
else if (resourceRequests.ContainsKey(id))
|
||||
return resourceRequests[id];
|
||||
else if (resources.ContainsKey(id))
|
||||
return new AsyncReply<DistributedResource>(resources[id]);
|
||||
|
||||
var reply = new AsyncReply<DistributedResource>();
|
||||
|
||||
SendRequest(IIPPacket.IIPPacketAction.AttachResource, id).Then((rt) =>
|
||||
{
|
||||
GetTemplate((Guid)rt[0]).Then((tmp) =>
|
||||
{
|
||||
|
||||
// ClassId, ResourceAge, ResourceLink, Content
|
||||
|
||||
//var dr = Warehouse.New<DistributedResource>(id.ToString(), this);
|
||||
//var dr = nInitialize(this, tmp, id, (uint)rt[0]);
|
||||
var dr = new DistributedResource(this, tmp, id, (uint)rt[1], (string)rt[2]);
|
||||
Warehouse.Put(dr, id.ToString(), this);
|
||||
|
||||
Codec.ParseVarArray((byte[])rt[3], this).Then((ar) =>
|
||||
{
|
||||
dr._Attached(ar);
|
||||
resourceRequests.Remove(id);
|
||||
reply.Trigger(dr);
|
||||
});
|
||||
});
|
||||
});
|
||||
|
||||
return reply;
|
||||
}
|
||||
|
||||
private void Instance_ResourceDestroyed(IResource resource)
|
||||
{
|
||||
// compose the packet
|
||||
SendParams((byte)0x1, resource.Instance.Id);
|
||||
}
|
||||
|
||||
private void Instance_PropertyModified(IResource resource, string name, object newValue, object oldValue)
|
||||
{
|
||||
var pt = resource.Instance.Template.GetPropertyTemplate(name);
|
||||
|
||||
if (pt == null)
|
||||
return;
|
||||
|
||||
// compose the packet
|
||||
if (newValue is Func<DistributedConnection, object>)
|
||||
SendParams((byte)0x10, resource.Instance.Id, pt.Index, Codec.Compose((newValue as Func<DistributedConnection, object>)(this), this));
|
||||
else
|
||||
SendParams((byte)0x10, resource.Instance.Id, pt.Index, Codec.Compose(newValue, this));
|
||||
|
||||
}
|
||||
|
||||
private void Instance_EventOccured(IResource resource, string name, string[] receivers, object[] args)
|
||||
{
|
||||
var et = resource.Instance.Template.GetEventTemplate(name);
|
||||
|
||||
if (et == null)
|
||||
return;
|
||||
|
||||
if (receivers != null)
|
||||
if (!receivers.Contains(RemoteUsername))
|
||||
return;
|
||||
|
||||
var clientArgs = new object[args.Length];
|
||||
for (var i = 0; i < args.Length; i++)
|
||||
if (args[i] is Func<DistributedConnection, object>)
|
||||
clientArgs[i] = (args[i] as Func<DistributedConnection, object>)(this);
|
||||
else
|
||||
clientArgs[i] = args[i];
|
||||
|
||||
|
||||
// compose the packet
|
||||
SendParams((byte)0x11, resource.Instance.Id, (byte)et.Index, Codec.ComposeVarArray(args, this, true));
|
||||
|
||||
}
|
||||
}
|
||||
}
|
Reference in New Issue
Block a user