mirror of
https://gitee.com/langsisi_admin/serein-flow
synced 2026-03-02 15:50:47 +08:00
446 lines
18 KiB
C#
446 lines
18 KiB
C#
using Serein.Library.Api;
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using Serein.Library.Core.NodeFlow;
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using Serein.Library.Entity;
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using Serein.Library.Enums;
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using Serein.Library.Utils;
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using Serein.Library.Web;
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using Serein.NodeFlow.Base;
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using Serein.NodeFlow.Model;
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using System.ComponentModel.Design;
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using System.Runtime.CompilerServices;
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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
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{
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/// <summary>
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/// 流程启动器
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/// </summary>
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/// <param name="serviceContainer"></param>
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/// <param name="methodDetails"></param>
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public class FlowStarter
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{
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public FlowStarter()
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{
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SereinIOC = new SereinIOC();
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}
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/// <summary>
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/// 流程运行状态
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/// </summary>
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public enum RunState
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{
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/// <summary>
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/// 等待开始
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/// </summary>
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NoStart,
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/// <summary>
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/// 正在运行
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/// </summary>
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Running,
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/// <summary>
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/// 运行完成
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/// </summary>
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Completion,
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}
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/// <summary>
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/// 控制触发器
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/// </summary>
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private CancellationTokenSource _flipFlopCts = null;
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public const string FlipFlopCtsName = "<>.FlowFlipFlopCts";
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public bool IsStopStart = false;
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/// <summary>
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/// 运行状态
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/// </summary>
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public RunState FlowState { get; private set; } = RunState.NoStart;
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public RunState FlipFlopState { get; private set; } = RunState.NoStart;
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/// <summary>
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/// 运行时的IOC容器
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/// </summary>
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private ISereinIOC SereinIOC { get; } = null;
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/// <summary>
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/// 结束运行时需要执行的方法
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/// </summary>
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private Action ExitAction { get; set; } = null;
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/// <summary>
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/// 运行的上下文
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/// </summary>
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private IDynamicContext Context { get; set; } = null;
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private void CheckStartState()
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{
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if (IsStopStart)
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{
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throw new Exception("停止启动");
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}
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}
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// <summary>
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// 开始运行
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// </summary>
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// <param name="startNode">起始节点</param>
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// <param name="env">运行环境</param>
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// <param name="runNodeMd">环境中已加载的所有节点方法</param>
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// <param name="flipflopNodes">触发器节点</param>
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// <returns></returns>
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/// <summary>
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/// 开始运行
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/// </summary>
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/// <param name="env">运行环境</param>
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/// <param name="nodes">环境中已加载的所有节点</param>
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/// <param name="initMethods">初始化方法</param>
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/// <param name="loadingMethods">加载时方法</param>
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/// <param name="exitMethods">结束时方法</param>
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/// <returns></returns>
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public async Task RunAsync(IFlowEnvironment env,
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List<NodeModelBase> nodes,
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List<MethodDetails> initMethods,
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List<MethodDetails> loadingMethods,
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List<MethodDetails> exitMethods)
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{
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FlowState = RunState.Running; // 开始运行
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NodeModelBase? startNode = nodes.FirstOrDefault(node => node.IsStart);
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if (startNode is null) {
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FlowState = RunState.Completion; // 不存在起点，退出流程
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return;
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}
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#region 获取所有触发器，以及已加载节点的方法信息
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List<MethodDetails> runNodeMd;
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List<SingleFlipflopNode> flipflopNodes;
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flipflopNodes = nodes.Where(it => it.MethodDetails?.MethodDynamicType == NodeType.Flipflop && it.IsStart == false)
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.Select(it => (SingleFlipflopNode)it)
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.Where(node => node is SingleFlipflopNode flipflopNode && flipflopNode.NotExitPreviousNode())
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.ToList();// 获取需要再运行开始之前启动的触发器节点
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runNodeMd = nodes.Select(item => item.MethodDetails).ToList(); // 获取环境中所有节点的方法信息
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#endregion
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#region 选择运行环境的上下文
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// 判断使用哪一种流程上下文
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var isNetFramework = false;
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if (isNetFramework)
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{
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Context = new Serein.Library.Framework.NodeFlow.DynamicContext(SereinIOC, env);
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}
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else
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{
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Context = new Serein.Library.Core.NodeFlow.DynamicContext(SereinIOC, env); // 从起始节点启动流程时创建上下文
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}
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#endregion
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#region 初始化运行环境的Ioc容器
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// 清除节点使用的对象，筛选出需要初始化的方法描述
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var thisRuningMds = new List<MethodDetails>();
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thisRuningMds.AddRange(runNodeMd.Where(md => md is not null));
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thisRuningMds.AddRange(initMethods.Where(md => md is not null));
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thisRuningMds.AddRange(loadingMethods.Where(md => md is not null));
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thisRuningMds.AddRange(exitMethods.Where(md => md is not null));
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// .AddRange(initMethods).AddRange(loadingMethods).a
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foreach (var nodeMd in thisRuningMds)
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{
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nodeMd.ActingInstance = null;
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}
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SereinIOC.Reset(); // 开始运行时清空ioc中注册的实例
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// 初始化ioc容器中的类型对象
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foreach (var md in thisRuningMds)
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{
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if (md.ActingInstanceType != null)
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{
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SereinIOC.Register(md.ActingInstanceType);
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}
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else
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{
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await Console.Out.WriteLineAsync($"{md.MethodName} - 没有类型声明");
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IsStopStart = true;
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}
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}
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CheckStartState(); // 初始化IOC后检查状态
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SereinIOC.Build(); // 流程启动前的初始化
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foreach (var md in thisRuningMds)
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{
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md.ActingInstance = SereinIOC.GetOrRegisterInstantiate(md.ActingInstanceType);
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if(md.ActingInstance is null)
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{
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await Console.Out.WriteLineAsync($"{md.MethodName} - 无法获取类型[{md.ActingInstanceType}]的实例");
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IsStopStart = true;
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}
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}
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CheckStartState();// 调用节点初始化后检查状态
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#endregion
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#region 检查并修正初始化、加载时、退出时方法作用的对象，保证后续不会报错（已注释）
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//foreach (var md in initMethods) // 初始化
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//{
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// md.ActingInstance ??= Context.SereinIoc.GetOrRegisterInstantiate(md.ActingInstanceType);
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//}
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//foreach (var md in loadingMethods) // 加载
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//{
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// md.ActingInstance ??= Context.SereinIoc.GetOrRegisterInstantiate(md.ActingInstanceType);
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//}
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//foreach (var md in exitMethods) // 初始化
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//{
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// md.ActingInstance ??= Context.SereinIoc.GetOrRegisterInstantiate(md.ActingInstanceType);
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//}
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#endregion
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#region 执行初始化，绑定IOC容器，再执行加载时
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//object?[]? args = [Context];
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foreach (var md in initMethods) // 初始化
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{
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((Action<object, object?[]?>)md.MethodDelegate).Invoke(md.ActingInstance, [Context]);
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}
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Context.SereinIoc.Build(); // 绑定初始化时注册的类型
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foreach (var md in loadingMethods) // 加载
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{
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//object?[]? data = [md.ActingInstance, args];
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//md.MethodDelegate.DynamicInvoke(data);
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((Action<object, object?[]?>)md.MethodDelegate).Invoke(md.ActingInstance, [Context]);
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}
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Context.SereinIoc.Build(); // 预防有人在加载时才注册类型，再绑定一次
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#endregion
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#region 设置流程退出时的回调函数
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ExitAction = () =>
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{
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SereinIOC.Run<WebServer>(web => {
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web?.Stop();
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});
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foreach (MethodDetails? md in exitMethods)
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{
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((Action<object, object?[]?>)md.MethodDelegate).Invoke(md.ActingInstance, [Context]);
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}
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if (_flipFlopCts != null && !_flipFlopCts.IsCancellationRequested)
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{
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_flipFlopCts?.Cancel();
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_flipFlopCts?.Dispose();
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}
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FlowState = RunState.Completion;
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FlipFlopState = RunState.Completion;
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};
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#endregion
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#region 开始启动流程
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try
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{
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if (flipflopNodes.Count > 0)
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{
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FlipFlopState = RunState.Running;
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// 如果存在需要启动的触发器，则开始启动
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_flipFlopCts = new CancellationTokenSource();
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SereinIOC.CustomRegisterInstance(FlipFlopCtsName, _flipFlopCts,false);
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// 使用 TaskCompletionSource 创建未启动的触发器任务
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var tasks = flipflopNodes.Select(async node =>
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{
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await FlipflopExecute(env,node);
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}).ToArray();
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_ = Task.WhenAll(tasks);
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}
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await startNode.StartExecute(Context); // 开始运行时从起始节点开始运行
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// 等待结束
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if(FlipFlopState == RunState.Running && _flipFlopCts is not null)
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{
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while (!_flipFlopCts.IsCancellationRequested)
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{
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await Task.Delay(100);
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}
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}
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}
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catch (Exception ex)
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{
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await Console.Out.WriteLineAsync(ex.ToString());
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// await Console.Out.WriteLineAsync(ex.Message);
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}
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finally
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{
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FlowState = RunState.Completion;
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}
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#endregion
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}
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public void AddFlipflopInRuning(SingleFlipflopNode singleFlipFlopNode, IFlowEnvironment flowEnvironment)
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{
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_ = Task.Run(async () =>
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{
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// 设置对象
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singleFlipFlopNode.MethodDetails.ActingInstance = SereinIOC.GetOrRegisterInstantiate(singleFlipFlopNode.MethodDetails.ActingInstanceType);
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await FlipflopExecute(flowEnvironment,singleFlipFlopNode); // 启动触发器
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});
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}
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/// <summary>
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/// 启动全局触发器
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/// </summary>
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/// <param name="flowEnvironment">流程运行全局环境</param>
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/// <param name="singleFlipFlopNode">需要全局监听信号的触发器</param>
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/// <returns></returns>
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private async Task FlipflopExecute(IFlowEnvironment flowEnvironment,SingleFlipflopNode singleFlipFlopNode)
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{
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var context = new DynamicContext(SereinIOC, flowEnvironment); // 启动全局触发器时新建上下文
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try
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{
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while (!_flipFlopCts.IsCancellationRequested)
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{
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var newFlowData = await singleFlipFlopNode.ExecutingAsync(context); // 获取触发器等待Task
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await NodeModelBase.RefreshFlowDataAndExpInterrupt(context, singleFlipFlopNode, newFlowData); // 全局触发器触发后刷新该触发器的节点数据
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if (singleFlipFlopNode.NextOrientation != ConnectionType.None)
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{
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var nextNodes = singleFlipFlopNode.SuccessorNodes[singleFlipFlopNode.NextOrientation];
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for (int i = nextNodes.Count - 1; i >= 0 && !_flipFlopCts.IsCancellationRequested; i--)
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{
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// 筛选出启用的节点
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if (nextNodes[i].DebugSetting.IsEnable)
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{
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nextNodes[i].PreviousNode = singleFlipFlopNode;
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if (nextNodes[i].DebugSetting.InterruptClass != InterruptClass.None) // 执行触发前
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{
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var cancelType = await nextNodes[i].DebugSetting.GetInterruptTask();
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await Console.Out.WriteLineAsync($"[{nextNodes[i].MethodDetails.MethodName}]中断已{cancelType}，开始执行后继分支");
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}
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await nextNodes[i].StartExecute(context); // 启动执行触发器后继分支的节点
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}
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}
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}
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}
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}
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catch (Exception ex)
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{
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await Console.Out.WriteLineAsync(ex.ToString());
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}
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//MethodDetails md = singleFlipFlopNode.MethodDetails;
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//var del = md.MethodDelegate;
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//object?[]? parameters = singleFlipFlopNode.GetParameters(context, singleFlipFlopNode.MethodDetails); // 启动全局触发器时获取入参参数
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//// 设置委托对象
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//var func = md.ExplicitDatas.Length == 0 ?
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// (Func<object, object, Task<IFlipflopContext>>)del :
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// (Func<object, object[], Task<IFlipflopContext>>)del;
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//if(t)
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//{
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// IFlipflopContext flipflopContext = await ((Func<object, Task<IFlipflopContext>>)del.Clone()).Invoke(md.ActingInstance);// 开始等待全局触发器的触发
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// var connectionType = flipflopContext.State.ToContentType();
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// if (connectionType != ConnectionType.None)
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// {
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// await GlobalFlipflopExecute(context, singleFlipFlopNode, connectionType, cts);
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// }
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//}
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//else
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//{
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// IFlipflopContext flipflopContext = await ((Func<object, object[], Task<IFlipflopContext>>)del.Clone()).Invoke(md.ActingInstance, parameters);// 开始等待全局触发器的触发
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// var connectionType = flipflopContext.State.ToContentType();
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// if (connectionType != ConnectionType.None)
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// {
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// await GlobalFlipflopExecute(context, singleFlipFlopNode, connectionType, cts);
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// }
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//}
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}
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public void Exit()
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{
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ExitAction?.Invoke();
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}
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#if false
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/// <summary>
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/// 全局触发器开始执行相关分支
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/// </summary>
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/// <param name="context">上下文</param>
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/// <param name="singleFlipFlopNode">被触发的全局触发器</param>
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/// <param name="connectionType">分支类型</param>
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/// <returns></returns>
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public async Task GlobalFlipflopExecute(IDynamicContext context, SingleFlipflopNode singleFlipFlopNode,
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ConnectionType connectionType, CancellationTokenSource cts)
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{
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bool skip = true;
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Stack<NodeModelBase> stack = new Stack<NodeModelBase>();
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stack.Push(singleFlipFlopNode);
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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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// 首先执行上游分支
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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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upstreamNodes[i].PreviousNode = currentNode;
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await upstreamNodes[i].StartExecute(context); // 执行全局触发器的上游分支
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}
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// 当前节点是已经触发了的全局触发器，所以跳过，难道每次都要判断一次？
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if (skip)
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{
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skip = false;
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}
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else
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{
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currentNode.FlowData = await currentNode.ExecutingAsync(context);
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if (currentNode.NextOrientation == ConnectionType.None)
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{
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break; // 不再执行
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}
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connectionType = currentNode.NextOrientation;
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}
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// 获取下一分支
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var nextNodes = currentNode.SuccessorNodes[connectionType];
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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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nextNodes[i].PreviousNode = currentNode;
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stack.Push(nextNodes[i]);
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}
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}}
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#endif
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}
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}
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