mirror of
https://gitee.com/langsisi_admin/serein-flow
synced 2026-03-03 00:00:49 +08:00
594 lines
24 KiB
C#
594 lines
24 KiB
C#
using Newtonsoft.Json;
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using Newtonsoft.Json.Linq;
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using Serein.Library.Api;
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using Serein.Library.Utils;
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using Serein.Library.Utils.SereinExpression;
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using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.ComponentModel.Design;
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using System.Linq;
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using System.Linq.Expressions;
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using System.Net.Http.Headers;
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using System.Reflection;
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using System.Runtime.CompilerServices;
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using System.Text;
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using System.Threading;
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using System.Threading.Tasks;
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using System.Xml.Linq;
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namespace Serein.Library
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{
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/// <summary>
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/// 节点基类（数据）：条件控件，动作控件，条件区域，动作区域
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/// </summary>
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public abstract partial class NodeModelBase : IDynamicFlowNode
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{
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#region 节点相关事件
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/// <summary>
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/// 实体节点创建完成后调用的方法，调用时间早于 LoadInfo() 方法
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/// </summary>
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public virtual void OnCreating()
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{
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}
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/// <summary>
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/// 保存自定义信息
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/// </summary>
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/// <returns></returns>
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public virtual NodeInfo SaveCustomData(NodeInfo nodeInfo)
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{
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return nodeInfo;
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}
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/// <summary>
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/// 加载自定义数据
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/// </summary>
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/// <param name="nodeInfo"></param>
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public virtual void LoadCustomData(NodeInfo nodeInfo)
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{
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return;
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}
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/// <summary>
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/// 移除该节点
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/// </summary>
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public virtual void Remove()
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{
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if (this.DebugSetting.CancelInterrupt != null)
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{
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this.DebugSetting.CancelInterrupt?.Invoke();
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}
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this.DebugSetting.NodeModel = null;
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this.DebugSetting = null;
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foreach (var pd in this.MethodDetails.ParameterDetailss)
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{
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pd.DataValue = null;
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pd.Items = null;
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pd.NodeModel = null;
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pd.ExplicitType = null;
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pd.DataType = null;
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pd.Name = null;
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pd.ArgDataSourceNodeGuid = null;
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pd.ExplicitTypeName = null;
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}
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this.MethodDetails.ParameterDetailss = null;
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this.MethodDetails.ActingInstance = null;
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this.MethodDetails.NodeModel = null;
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this.MethodDetails.ReturnType = null;
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this.MethodDetails.AssemblyName = null;
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this.MethodDetails.MethodAnotherName = null;
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this.MethodDetails.MethodLockName = null;
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this.MethodDetails.MethodName = null;
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this.MethodDetails.ActingInstanceType = null;
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this.MethodDetails = null;
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this.Position = null;
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this.DisplayName = null;
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this.Env = null;
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}
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/// <summary>
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/// 输出方法参数信息
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/// </summary>
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/// <returns></returns>
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public ParameterData[] SaveParameterInfo()
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{
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if(MethodDetails.ParameterDetailss == null)
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{
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return new ParameterData[0];
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}
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if (MethodDetails.ParameterDetailss.Length > 0)
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{
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return MethodDetails.ParameterDetailss
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.Select(it => new ParameterData
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{
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SourceNodeGuid = it.ArgDataSourceNodeGuid,
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SourceType = it.ArgDataSourceType.ToString(),
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State = it.IsExplicitData,
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ArgName = it.Name,
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Value = it.DataValue,
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})
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.ToArray();
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}
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else
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{
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return new ParameterData[0];
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}
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}
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/// <summary>
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/// 导出为节点信息
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/// </summary>
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/// <returns></returns>
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public NodeInfo ToInfo()
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{
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// if (MethodDetails == null) return null;
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var trueNodes = SuccessorNodes[ConnectionInvokeType.IsSucceed].Select(item => item.Guid); // 真分支
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var falseNodes = SuccessorNodes[ConnectionInvokeType.IsFail].Select(item => item.Guid);// 假分支
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var errorNodes = SuccessorNodes[ConnectionInvokeType.IsError].Select(item => item.Guid);// 异常分支
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var upstreamNodes = SuccessorNodes[ConnectionInvokeType.Upstream].Select(item => item.Guid);// 上游分支
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// 生成参数列表
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ParameterData[] parameterData = SaveParameterInfo();
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NodeInfo nodeInfo = new NodeInfo
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{
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Guid = Guid,
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AssemblyName = MethodDetails.AssemblyName,
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MethodName = MethodDetails?.MethodName,
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Label = MethodDetails?.MethodAnotherName,
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Type = ControlType.ToString() , //this.GetType().ToString(),
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TrueNodes = trueNodes.ToArray(),
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FalseNodes = falseNodes.ToArray(),
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UpstreamNodes = upstreamNodes.ToArray(),
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ParameterData = parameterData.ToArray(),
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ErrorNodes = errorNodes.ToArray(),
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Position = Position,
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IsProtectionParameter = this.MethodDetails.IsProtectionParameter,
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IsInterrupt = this.DebugSetting.IsInterrupt,
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IsEnable = this.DebugSetting.IsEnable,
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ParentNodeGuid = ContainerNode?.Guid,
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ChildNodeGuids = ChildrenNode.Select(item => item.Guid).ToArray(),
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};
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nodeInfo.Position.X = Math.Round(nodeInfo.Position.X, 1);
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nodeInfo.Position.Y = Math.Round(nodeInfo.Position.Y, 1);
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nodeInfo = SaveCustomData(nodeInfo);
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return nodeInfo;
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}
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/// <summary>
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/// 从节点信息加载节点
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/// </summary>
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/// <param name="nodeInfo"></param>
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/// <returns></returns>
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public void LoadInfo(NodeInfo nodeInfo)
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{
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this.Guid = nodeInfo.Guid;
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this.Position = nodeInfo.Position ?? new PositionOfUI(0, 0);// 加载位置信息
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var md = this.MethodDetails; // 当前节点的方法说明
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this.MethodDetails.IsProtectionParameter = nodeInfo.IsProtectionParameter; // 保护参数
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this.DebugSetting.IsInterrupt = nodeInfo.IsInterrupt; // 是否中断
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this.DebugSetting.IsEnable = nodeInfo.IsEnable; // 是否使能
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if (md != null)
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{
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if(md.ParameterDetailss == null)
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{
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md.ParameterDetailss = new ParameterDetails[0];
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}
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var pds = md.ParameterDetailss; // 当前节点的入参描述数组
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#region 类库方法型节点加载参数
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if (nodeInfo.ParameterData.Length > pds.Length && md.HasParamsArg)
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{
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// 保存的参数信息项数量大于方法本身的方法入参数量（可能存在可变入参）
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var length = nodeInfo.ParameterData.Length - pds.Length; // 需要扩容的长度
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this.MethodDetails.ParameterDetailss = ArrayHelper.Expansion(pds, length); // 扩容入参描述数组
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pds = md.ParameterDetailss; // 当前节点的入参描述数组
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var startParmsPd = pds[md.ParamsArgIndex]; // 获取可变入参参数描述
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for (int i = md.ParamsArgIndex + 1; i <= md.ParamsArgIndex + length; i++)
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{
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pds[i] = startParmsPd.CloneOfModel(this);
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pds[i].Index = pds[i - 1].Index + 1;
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pds[i].IsParams = true;
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}
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}
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for (int i = 0; i < nodeInfo.ParameterData.Length; i++)
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{
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if (i >= pds.Length)
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{
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Env.WriteLine(InfoType.ERROR, $"保存的参数数量大于方法此时的入参参数数量：[{nodeInfo.Guid}][{nodeInfo.MethodName}]");
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break;
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}
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var pd = pds[i];
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ParameterData pdInfo = nodeInfo.ParameterData[i];
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pd.IsExplicitData = pdInfo.State;
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pd.DataValue = pdInfo.Value;
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pd.ArgDataSourceType = EnumHelper.ConvertEnum<ConnectionArgSourceType>(pdInfo.SourceType);
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pd.ArgDataSourceNodeGuid = pdInfo.SourceNodeGuid;
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}
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LoadCustomData(nodeInfo); // 加载自定义数据
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#endregion
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}
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}
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#endregion
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#region 调试中断
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/// <summary>
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/// 不再中断
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/// </summary>
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public void CancelInterrupt()
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{
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this.DebugSetting.IsInterrupt = false;
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DebugSetting.CancelInterrupt?.Invoke();
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}
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#endregion
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#region 节点方法的执行
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/// <summary>
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/// 是否应该退出执行
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/// </summary>
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/// <param name="context"></param>
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/// <param name="flowCts"></param>
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/// <returns></returns>
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public static bool IsBradk(IDynamicContext context, CancellationTokenSource flowCts)
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{
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// 上下文不再执行
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if (context.RunState == RunState.Completion)
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{
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return true;
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}
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// 不存在全局触发器时，流程运行状态被设置为完成，退出执行，用于打断无限循环分支。
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if (flowCts is null && context.Env.FlowState == RunState.Completion)
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{
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return true;
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}
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// 如果存在全局触发器，且触发器的执行任务已经被取消时，退出执行。
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if (flowCts != null)
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{
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if (flowCts.IsCancellationRequested)
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return true;
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}
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return false;
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}
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/// <summary>
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/// 开始执行
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/// </summary>
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/// <param name="context"></param>
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/// <returns></returns>
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public async Task StartFlowAsync(IDynamicContext context)
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{
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Stack<NodeModelBase> stack = new Stack<NodeModelBase>();
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HashSet<NodeModelBase> processedNodes = new HashSet<NodeModelBase>(); // 用于记录已处理上游节点的节点
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stack.Push(this);
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var flowCts = context.Env.IOC.Get<CancellationTokenSource>(NodeStaticConfig.FlipFlopCtsName);
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bool hasFlipflow = flowCts != null;
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while (stack.Count > 0) // 循环中直到栈为空才会退出循环
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{
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#if DEBUG
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await Task.Delay(1);
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#endif
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#region 执行相关
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// 从栈中弹出一个节点作为当前节点进行处理
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var currentNode = stack.Pop();
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context.NextOrientation = ConnectionInvokeType.None; // 重置上下文状态
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object newFlowData;
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try
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{
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if (IsBradk(context, flowCts)) break; // 退出执行
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newFlowData = await currentNode.ExecutingAsync(context);
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if (IsBradk(context, flowCts)) break; // 退出执行
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if (context.NextOrientation == ConnectionInvokeType.None) // 没有手动设置时，进行自动设置
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{
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context.NextOrientation = ConnectionInvokeType.IsSucceed;
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}
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}
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catch (Exception ex)
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{
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newFlowData = null;
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context.Env.WriteLine(InfoType.ERROR, $"节点[{currentNode.Guid}]异常：" + ex);
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context.NextOrientation = ConnectionInvokeType.IsError;
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context.ExceptionOfRuning = ex;
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}
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await RefreshFlowDataAndExpInterrupt(context, currentNode, newFlowData); // 执行当前节点后刷新数据
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#endregion
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#region 执行完成
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// 首先将指定类别后继分支的所有节点逆序推入栈中
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var nextNodes = currentNode.SuccessorNodes[context.NextOrientation];
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for (int index = nextNodes.Count - 1; index >= 0; index--)
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{
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// 筛选出启用的节点的节点
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if (nextNodes[index].DebugSetting.IsEnable)
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{
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context.SetPreviousNode(nextNodes[index], currentNode);
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stack.Push(nextNodes[index]);
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}
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}
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// 然后将指上游分支的所有节点逆序推入栈中
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var upstreamNodes = currentNode.SuccessorNodes[ConnectionInvokeType.Upstream];
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for (int index = upstreamNodes.Count - 1; index >= 0; index--)
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{
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// 筛选出启用的节点的节点
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if (upstreamNodes[index].DebugSetting.IsEnable)
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{
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context.SetPreviousNode(upstreamNodes[index], currentNode);
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stack.Push(upstreamNodes[index]);
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}
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}
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#endregion
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}
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}
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/// <summary>
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/// 执行节点对应的方法
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/// </summary>
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/// <param name="context">流程上下文</param>
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/// <returns>节点传回数据对象</returns>
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public virtual async Task<object> ExecutingAsync(IDynamicContext context)
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{
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#region 调试中断
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if(context.NextOrientation == ConnectionInvokeType.IsError)
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{
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}
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// 执行触发检查是否需要中断
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if (DebugSetting.IsInterrupt)
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{
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context.Env.TriggerInterrupt(Guid, "", InterruptTriggerEventArgs.InterruptTriggerType.Monitor); // 通知运行环境该节点中断了
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await DebugSetting.GetInterruptTask.Invoke();
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//await fit.WaitTriggerAsync(Guid); // 创建一个等待的中断任务
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SereinEnv.WriteLine(InfoType.INFO, $"[{this.MethodDetails?.MethodName}]中断已取消，开始执行后继分支");
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var flowCts = context.Env.IOC.Get<CancellationTokenSource>(NodeStaticConfig.FlipFlopCtsName);
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if (IsBradk(context, flowCts)) return null; // 流程已终止，取消后续的执行
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}
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#endregion
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MethodDetails md = MethodDetails;
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if (md is null)
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{
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throw new Exception($"节点{this.Guid}不存在方法信息，请检查是否需要重写节点的ExecutingAsync");
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}
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if (!context.Env.TryGetDelegateDetails(md.AssemblyName, md.MethodName, out var dd)) // 流程运行到某个节点
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{
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throw new Exception($"节点{this.Guid}不存在对应委托");
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}
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if (md.ActingInstance is null)
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{
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md.ActingInstance = context.Env.IOC.Get(md.ActingInstanceType);
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if (md.ActingInstance is null)
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{
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md.ActingInstance = context.Env.IOC.Instantiate(md.ActingInstanceType);
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}
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}
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object[] args = await GetParametersAsync(context);
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var result = await dd.InvokeAsync(md.ActingInstance, args);
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return result;
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}
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/// <summary>
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/// 获取对应的参数数组
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/// </summary>
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public async Task<object[]> GetParametersAsync(IDynamicContext context)
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{
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if (MethodDetails.ParameterDetailss.Length == 0)
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{
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return new object[0]; // 无参数
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}
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#region 定义返回的参数数组
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object[] args;
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Array paramsArgs = null; // 初始化可选参数
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int paramsArgIndex = 0; // 可选参数下标，与 object[] paramsArgs 一起使用
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if (MethodDetails.ParamsArgIndex >= 0) // 存在可变入参参数
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{
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var paramsArgType = MethodDetails.ParameterDetailss[MethodDetails.ParamsArgIndex].DataType; // 获取可变参数的参数类型
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int paramsLength = MethodDetails.ParameterDetailss.Length - MethodDetails.ParamsArgIndex; // 可变参数数组长度 = 方法参数个数 - （ 可选入参下标 + 1 ）
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paramsArgs = Array.CreateInstance(paramsArgType, paramsLength);// 可变参数
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args = new object[MethodDetails.ParamsArgIndex + 1]; // 调用方法的入参数组
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args[MethodDetails.ParamsArgIndex] = paramsArgs; // 如果存在可选参数，入参参数最后一项则为可变参数
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}
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else
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{
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// 不存在可选参数
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args = new object[MethodDetails.ParameterDetailss.Length]; // 调用方法的入参数组
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}
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#endregion
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// 常规参数的获取
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for (int i = 0; i < args.Length; i++) {
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var pd = MethodDetails.ParameterDetailss[i];
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args[i] = await pd.ToMethodArgData(context); // 获取数据
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}
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// 可选参数的获取
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if(MethodDetails.ParamsArgIndex >= 0)
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{
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for (int i = 0; i < paramsArgs.Length; i++)
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{
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var pd = MethodDetails.ParameterDetailss[paramsArgIndex + i];
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var data = await pd.ToMethodArgData(context); // 获取数据
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paramsArgs.SetValue(data, i);// 设置到数组中
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}
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args[args.Length - 1] = paramsArgs;
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}
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return args;
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}
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/// <summary>
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/// 更新节点数据，并检查监视表达式是否生效
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/// </summary>
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/// <param name="context">上下文</param>
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/// <param name="nodeModel">节点Moel</param>
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/// <param name="newData">新的数据</param>
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/// <returns></returns>
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public static async Task RefreshFlowDataAndExpInterrupt(IDynamicContext context, NodeModelBase nodeModel, object newData = null)
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{
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string guid = nodeModel.Guid;
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context.AddOrUpdate(guid, newData); // 上下文中更新数据
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if (newData is null)
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{
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}
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else
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{
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await MonitorObjExpInterrupt(context, nodeModel, newData, 0); // 首先监视对象
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await MonitorObjExpInterrupt(context, nodeModel, newData, 1); // 然后监视节点
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//nodeModel.FlowData = newData; // 替换数据
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}
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}
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private static async Task MonitorObjExpInterrupt(IDynamicContext context, NodeModelBase nodeModel, object data, int monitorType)
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{
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MonitorObjectEventArgs.ObjSourceType sourceType;
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string key;
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if (monitorType == 0)
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{
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key = data?.GetType()?.FullName;
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sourceType = MonitorObjectEventArgs.ObjSourceType.IOCObj;
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}
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else
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{
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key = nodeModel.Guid;
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sourceType = MonitorObjectEventArgs.ObjSourceType.IOCObj;
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}
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if (string.IsNullOrEmpty(key))
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{
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return;
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}
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//(var isMonitor, var exps) = await context.Env.CheckObjMonitorStateAsync(key);
|
||
//if (isMonitor) // 如果新的数据处于查看状态，通知UI进行更新？交给运行环境判断？
|
||
//{
|
||
// context.Env.MonitorObjectNotification(nodeModel.Guid, data, sourceType); // 对象处于监视状态，通知UI更新数据显示
|
||
// if (exps.Length > 0)
|
||
// {
|
||
// // 表达式环境下判断是否需要执行中断
|
||
// bool isExpInterrupt = false;
|
||
// string exp = "";
|
||
// // 判断执行监视表达式，直到为 true 时退出
|
||
// for (int i = 0; i < exps.Length && !isExpInterrupt; i++)
|
||
// {
|
||
// exp = exps[i];
|
||
// if (string.IsNullOrEmpty(exp)) continue;
|
||
// // isExpInterrupt = SereinConditionParser.To(data, exp);
|
||
// }
|
||
|
||
// if (isExpInterrupt) // 触发中断
|
||
// {
|
||
// nodeModel.DebugSetting.IsInterrupt = true;
|
||
// if (await context.Env.SetNodeInterruptAsync(nodeModel.Guid,true))
|
||
// {
|
||
// context.Env.TriggerInterrupt(nodeModel.Guid, exp, InterruptTriggerEventArgs.InterruptTriggerType.Exp);
|
||
// var cancelType = await nodeModel.DebugSetting.GetInterruptTask();
|
||
// await Console.Out.WriteLineAsync($"[{data}]中断已{cancelType}，开始执行后继分支");
|
||
// nodeModel.DebugSetting.IsInterrupt = false;
|
||
// }
|
||
// }
|
||
// }
|
||
|
||
//}
|
||
}
|
||
|
||
#endregion
|
||
|
||
}
|
||
|
||
|
||
#if false
|
||
public static class NodeModelExtension
|
||
{
|
||
/// <summary>
|
||
/// 程序集更新，更新节点方法描述、以及所有入参描述的类型
|
||
/// </summary>
|
||
/// <param name="nodeModel">节点Model</param>
|
||
/// <param name="newMd">新的方法描述</param>
|
||
public static void UploadMethod(this NodeModelBase nodeModel, MethodDetails newMd)
|
||
{
|
||
var thisMd = nodeModel.MethodDetails;
|
||
|
||
thisMd.ActingInstanceType = newMd.ActingInstanceType; // 更新方法需要的类型
|
||
|
||
var thisPds = thisMd.ParameterDetailss;
|
||
var newPds = newMd.ParameterDetailss;
|
||
// 当前存在可变参数，且新的方法也存在可变参数，需要把可变参数的数目与值传递过去
|
||
if (thisMd.HasParamsArg && newMd.HasParamsArg)
|
||
{
|
||
int paramsLength = thisPds.Length - thisMd.ParamsArgIndex - 1; // 确定扩容长度
|
||
newMd.ParameterDetailss = ArrayHelper.Expansion(newPds, paramsLength);// 为新方法的入参参数描述进行扩容
|
||
newPds = newMd.ParameterDetailss;
|
||
int index = newMd.ParamsArgIndex; // 记录
|
||
var templatePd = newPds[newMd.ParamsArgIndex]; // 新的入参模板
|
||
for (int i = thisMd.ParamsArgIndex; i < thisPds.Length; i++)
|
||
{
|
||
ParameterDetails thisPd = thisPds[i];
|
||
var newPd = templatePd.CloneOfModel(nodeModel); // 复制参数描述
|
||
newPd.Index = i + 1; // 更新索引
|
||
newPd.IsParams = true;
|
||
newPd.DataValue = thisPd.DataValue; // 保留参数值
|
||
newPd.ArgDataSourceNodeGuid = thisPd.ArgDataSourceNodeGuid; // 保留参数来源信息
|
||
newPd.ArgDataSourceType = thisPd.ArgDataSourceType; // 保留参数来源信息
|
||
newPd.IsParams = thisPd.IsParams; // 保留显式参数设置
|
||
newPds[index++] = newPd;
|
||
}
|
||
}
|
||
|
||
|
||
var thidPdLength = thisMd.HasParamsArg ? thisMd.ParamsArgIndex : thisPds.Length;
|
||
// 遍历当前的参数描述（不包含可变参数），找到匹配项，复制必要的数据进行保留
|
||
for (int i = 0; i < thisPds.Length; i++)
|
||
{
|
||
ParameterDetails thisPd = thisPds[i];
|
||
var newPd = newPds.FirstOrDefault(t_newPd => !t_newPd.IsParams // 不为可变参数
|
||
&& t_newPd.Name.Equals(thisPd.Name, StringComparison.OrdinalIgnoreCase) // 存在相同名称
|
||
&& t_newPd.DataType.Name.Equals(thisPd.DataType.Name) // 存在相同入参类型名称（以类型作为区分）
|
||
);
|
||
if (newPd != null) // 如果匹配上了
|
||
{
|
||
newPd.DataValue = thisPd.DataValue; // 保留参数值
|
||
newPd.ArgDataSourceNodeGuid = thisPd.ArgDataSourceNodeGuid; // 保留参数来源信息
|
||
newPd.ArgDataSourceType = thisPd.ArgDataSourceType; // 保留参数来源信息
|
||
newPd.IsParams = thisPd.IsParams; // 保留显式参数设置
|
||
}
|
||
}
|
||
thisMd.ReturnType = newMd.ReturnType;
|
||
nodeModel.MethodDetails = newMd;
|
||
|
||
}
|
||
}
|
||
#endif
|
||
}
|
