mirror of
https://gitee.com/langsisi_admin/serein-flow
synced 2026-03-03 00:00:49 +08:00
394 lines
16 KiB
C#
394 lines
16 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.Entity;
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using Serein.Library.Enums;
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using Serein.Library.Ex;
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using Serein.NodeFlow.Tool.SereinExpression;
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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.Net.Http.Headers;
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using System.Text;
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using System.Threading.Tasks;
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using System.Xml.Linq;
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using static Serein.Library.Utils.ChannelFlowInterrupt;
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namespace Serein.NodeFlow.Base
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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 调试中断
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public Action? CancelInterruptCallback;
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/// <summary>
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/// 中断节点
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/// </summary>
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public void Interrupt()
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{
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this.DebugSetting.InterruptClass = InterruptClass.Branch;
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this.DebugSetting.IsInterrupt = true;
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}
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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.InterruptClass = InterruptClass.None;
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this.DebugSetting.IsInterrupt = false;
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CancelInterruptCallback?.Invoke();
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CancelInterruptCallback = null;
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}
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#endregion
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#region 导出/导入项目文件节点信息
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internal abstract Parameterdata[] GetParameterdatas();
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internal virtual NodeInfo ToInfo()
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{
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// if (MethodDetails == null) return null;
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var trueNodes = SuccessorNodes[ConnectionType.IsSucceed].Select(item => item.Guid); // 真分支
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var falseNodes = SuccessorNodes[ConnectionType.IsFail].Select(item => item.Guid);// 假分支
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var errorNodes = SuccessorNodes[ConnectionType.IsError].Select(item => item.Guid);// 异常分支
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var upstreamNodes = SuccessorNodes[ConnectionType.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 = GetParameterdatas();
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return new NodeInfo
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{
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Guid = Guid,
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MethodName = MethodDetails?.MethodName,
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Label = DisplayName ?? "",
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Type = 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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};
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}
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internal virtual NodeModelBase LoadInfo(NodeInfo nodeInfo)
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{
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var node = this;
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if (node != null)
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{
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node.Guid = nodeInfo.Guid;
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for (int i = 0; i < nodeInfo.ParameterData.Length; i++)
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{
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Parameterdata? pd = nodeInfo.ParameterData[i];
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node.MethodDetails.ExplicitDatas[i].IsExplicitData = pd.State;
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node.MethodDetails.ExplicitDatas[i].DataValue = pd.Value;
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}
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}
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return this;
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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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/// 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 StartExecute(IDynamicContext context)
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{
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CancellationTokenSource cts = null;
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try
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{
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cts = context.SereinIoc.Get<CancellationTokenSource>(FlowStarter.FlipFlopCtsName);
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Stack<NodeModelBase> stack = new Stack<NodeModelBase>();
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stack.Push(this);
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while (stack.Count > 0 && !cts.IsCancellationRequested) // 循环中直到栈为空才会退出循环
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{
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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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// 设置方法执行的对象
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if (currentNode.MethodDetails?.ActingInstance == null && currentNode.MethodDetails?.ActingInstanceType is not null)
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{
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currentNode.MethodDetails.ActingInstance ??= context.SereinIoc.GetOrRegisterInstantiate(currentNode.MethodDetails.ActingInstanceType);
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}
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#region 执行相关
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// 首先执行上游分支
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#if false
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var upstreamNodes = currentNode.SuccessorNodes[ConnectionType.Upstream];
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for (int i = upstreamNodes.Count - 1; i >= 0; i--)
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{
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if (upstreamNodes[i].DebugSetting.IsEnable) // 排除未启用的上游节点
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{
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upstreamNodes[i].PreviousNode = currentNode;
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await upstreamNodes[i].StartExecute(context); // 执行流程节点的上游分支
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}
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}
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#endif
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currentNode.FlowData = await currentNode.ExecutingAsync(context); // 流程中正常执行
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#endregion
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#region 执行完成
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if (currentNode.NextOrientation == ConnectionType.None) break; // 不再执行
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// 选择后继分支
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var nextNodes = currentNode.SuccessorNodes[currentNode.NextOrientation];
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// 将下一个节点集合中的所有节点逆序推入栈中
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for (int i = nextNodes.Count - 1; i >= 0; i--)
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{
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// 排除未启用的节点
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if (nextNodes[i].DebugSetting.IsEnable)
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{
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nextNodes[i].PreviousNode = currentNode;
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stack.Push(nextNodes[i]);
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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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finally
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{
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cts?.Dispose();
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}
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}
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public static bool TryCreateInterruptTask(IDynamicContext context, NodeModelBase currentNode, out Task<CancelType>? task)
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{
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bool haveTask;
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Console.WriteLine($"[{currentNode.MethodDetails.MethodName}]在当前分支中断");
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if (currentNode.DebugSetting.InterruptClass == InterruptClass.None)
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{
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haveTask = false;
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task = null;
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currentNode.DebugSetting.IsInterrupt = false; // 纠正设置
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}
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else if (currentNode.DebugSetting.InterruptClass == InterruptClass.Branch) // 中断当前分支
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{
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currentNode.DebugSetting.IsInterrupt = true;
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haveTask = true;
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task = context.FlowEnvironment.ChannelFlowInterrupt.CreateChannelWithTimeoutAsync(currentNode.Guid, TimeSpan.FromSeconds(60 * 30)); // 中断30分钟
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}
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else
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{
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haveTask = false;
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task = null;
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}
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return haveTask;
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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 (DebugSetting.IsInterrupt && TryCreateInterruptTask(context, this, out Task<CancelType>? task)) // 执行节点前检查中断
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{
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string guid = this.Guid.ToString();
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this.CancelInterruptCallback ??= () => context.FlowEnvironment.ChannelFlowInterrupt.TriggerSignal(guid);
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var cancelType = await task!;
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task?.ToString();
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await Console.Out.WriteLineAsync($"[{this.MethodDetails.MethodName}]中断已{(cancelType == CancelType.Manual ? "手动取消" : "自动取消")}，开始执行后继分支");
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}
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#endregion
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MethodDetails md = MethodDetails;
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var del = md.MethodDelegate.Clone();
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object instance = md.ActingInstance;
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var haveParameter = md.ExplicitDatas.Length > 0;
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var haveResult = md.ReturnType != typeof(void);
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try
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{
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// Action/Func([方法作用的实例],[可能的参数值],[可能的返回值])
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object?[]? parameters = GetParameters(context, md);
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object? result = (haveParameter, haveResult) switch
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{
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(false, false) => Execution((Action<object>)del, instance), // 调用节点方法，返回null
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(true, false) => Execution((Action<object, object?[]?>)del, instance, parameters), // 调用节点方法，返回null
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(false, true) => Execution((Func<object, object?>)del, instance), // 调用节点方法，返回方法传回类型
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(true, true) => Execution((Func<object, object?[]?, object?>)del, instance, parameters), // 调用节点方法，获取入参参数，返回方法忏悔类型
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};
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//object?[]? parameters;
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//object? result = null;
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//if ( haveParameter )
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//{
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// var data = GetParameters(context, md);
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// if (data[0] is Int32 count && count > 1)
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// {
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// }
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// parameters = [instance, data];
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//}
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//else
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//{
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// parameters = [instance];
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//}
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//if (haveResult)
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//{
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// result = del.DynamicInvoke(parameters);
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//}
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//else
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//{
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// del.DynamicInvoke(parameters);
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//}
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NextOrientation = ConnectionType.IsSucceed;
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return result;
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}
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catch (Exception ex)
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{
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NextOrientation = ConnectionType.IsError;
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RuningException = ex;
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return null;
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}
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}
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/// <summary>
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/// 执行等待触发器的方法
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/// </summary>
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/// <param name="context"></param>
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/// <returns>节点传回数据对象</returns>
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/// <exception cref="RuningException"></exception>
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#region 节点转换的委托类型
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public static object? Execution(Action<object> del, object instance)
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{
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del?.Invoke(instance);
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return null;
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}
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public static object? Execution(Action<object, object?[]?> del, object instance, object?[]? parameters)
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{
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del?.Invoke(instance, parameters);
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return null;
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}
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public static object? Execution(Func<object, object?> del, object instance)
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{
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return del?.Invoke(instance);
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}
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public static object? Execution(Func<object, object?[]?, object?> del, object instance, object?[]? parameters)
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{
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return del?.Invoke(instance, parameters);
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}
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#endregion
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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 object?[]? GetParameters(IDynamicContext context, MethodDetails md)
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{
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// 用正确的大小初始化参数数组
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if (md.ExplicitDatas.Length == 0)
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{
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return null;// md.ActingInstance
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}
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object?[]? parameters = new object[md.ExplicitDatas.Length];
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var flowData = PreviousNode?.FlowData; // 当前传递的数据
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var previousDataType = flowData?.GetType();
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for (int i = 0; i < parameters.Length; i++)
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{
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object? inputParameter; // 存放解析的临时参数
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var ed = md.ExplicitDatas[i]; // 方法入参描述
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if (ed.IsExplicitData)
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{
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if (ed.DataValue.StartsWith("@get", StringComparison.OrdinalIgnoreCase))
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{
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// 执行表达式从上一节点获取对象
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inputParameter = SerinExpressionEvaluator.Evaluate(ed.DataValue, flowData, out _);
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}
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else
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{
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// 使用输入的固定值
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inputParameter = ed.DataValue;
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}
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}
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else
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{
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inputParameter = flowData; // 使用上一节点的对象
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}
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try
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{
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parameters[i] = ed.DataType switch
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{
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//Type t when t == previousDataType => inputParameter, // 上下文
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Type t when t == typeof(IDynamicContext) => context, // 上下文
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Type t when t == typeof(MethodDetails) => md, // 节点方法描述
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Type t when t == typeof(NodeModelBase) => this, // 节点实体类
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Type t when t == typeof(Guid) => new Guid(inputParameter?.ToString()),
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Type t when t == typeof(DateTime) => DateTime.Parse(inputParameter?.ToString()),
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Type t when t == typeof(string) => inputParameter?.ToString(),
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Type t when t == typeof(char) => char.Parse(inputParameter?.ToString()),
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Type t when t == typeof(bool) => inputParameter is null ? false : bool.Parse(inputParameter?.ToString()),
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Type t when t == typeof(float) => inputParameter is null ? 0F : float.Parse(inputParameter?.ToString()),
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Type t when t == typeof(decimal) => inputParameter is null ? 0 : decimal.Parse(inputParameter?.ToString()),
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Type t when t == typeof(double) => inputParameter is null ? 0 : double.Parse(inputParameter?.ToString()),
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Type t when t == typeof(sbyte) => inputParameter is null ? 0 : sbyte.Parse(inputParameter?.ToString()),
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Type t when t == typeof(byte) => inputParameter is null ? 0 : byte.Parse(inputParameter?.ToString()),
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Type t when t == typeof(short) => inputParameter is null ? 0 : short.Parse(inputParameter?.ToString()),
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Type t when t == typeof(ushort) => inputParameter is null ? 0U : ushort.Parse(inputParameter?.ToString()),
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Type t when t == typeof(int) => inputParameter is null ? 0 : int.Parse(inputParameter?.ToString()),
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Type t when t == typeof(uint) => inputParameter is null ? 0U : uint.Parse(inputParameter?.ToString()),
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Type t when t == typeof(long) => inputParameter is null ? 0L : long.Parse(inputParameter?.ToString()),
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Type t when t == typeof(ulong) => inputParameter is null ? 0UL : ulong.Parse(inputParameter?.ToString()),
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Type t when t == typeof(nint) => inputParameter is null ? 0 : nint.Parse(inputParameter?.ToString()),
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Type t when t == typeof(nuint) => inputParameter is null ? 0 : nuint.Parse(inputParameter?.ToString()),
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Type t when t.IsEnum => Enum.Parse(ed.DataType, ed.DataValue),// 需要枚举
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Type t when t.IsArray => (inputParameter as Array)?.Cast<object>().ToList(),
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Type t when t.IsGenericType && t.GetGenericTypeDefinition() == typeof(List<>) => inputParameter,
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Type t when Nullable.GetUnderlyingType(t) != null => inputParameter == null ? null : Convert.ChangeType(inputParameter, Nullable.GetUnderlyingType(t)),
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_ => inputParameter,
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};
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}
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catch (Exception ex) // 节点参数类型转换异常
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{
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parameters[i] = null;
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Console.WriteLine(ex);
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}
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}
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return parameters;
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}
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#endregion
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}
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}
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