mirror of
https://gitee.com/langsisi_admin/serein-flow
synced 2026-03-03 00:00:49 +08:00
394 lines
15 KiB
C#
394 lines
15 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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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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/// 控制触发器的结束
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/// </summary>
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private NodeRunCts FlipFlopCts { get; set; } = null;
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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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/// <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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public async Task RunAsync(NodeModelBase startNode,
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IFlowEnvironment env,
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List<MethodDetails> runNodeMd,
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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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List<SingleFlipflopNode> flipflopNodes)
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{
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FlowState = RunState.Running; // 开始运行
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if (startNode == 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 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 = true;
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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);
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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
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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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}
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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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if (md.ActingInstanceType != null)
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{
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md.ActingInstance = SereinIOC.GetOrRegisterInstantiate(md.ActingInstanceType);
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}
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}
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//foreach (var md in flipflopNodes.Select(it => it.MethodDetails).ToArray())
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//{
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// md.ActingInstance = SereinIoc.GetOrCreateServiceInstance(md.ActingInstanceType);
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//}
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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
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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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object?[]? data = [md.ActingInstance, args];
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md.MethodDelegate.DynamicInvoke(data);
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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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}
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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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object?[]? data = [md.ActingInstance, args];
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md.MethodDelegate.DynamicInvoke(data);
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}
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if (Context != null && Context.NodeRunCts != null && !Context.NodeRunCts.IsCancellationRequested)
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{
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Context.NodeRunCts.Cancel();
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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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}
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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 = SereinIOC.GetOrRegisterInstantiate<NodeRunCts>();
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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(node, env);
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}).ToArray();
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_ = Task.WhenAll(tasks);
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}
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await startNode.StartExecution(Context); // 从起始节点开始运行
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// 等待结束
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if (FlipFlopCts != 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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}
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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(singleFlipFlopNode, flowEnvironment); // 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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private async Task FlipflopExecute(SingleFlipflopNode singleFlipFlopNode, IFlowEnvironment flowEnvironment)
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{
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var context = new DynamicContext(SereinIOC, flowEnvironment);
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MethodDetails md = singleFlipFlopNode.MethodDetails;
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var del = md.MethodDelegate;
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// 设置方法执行的对象
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if (md?.ActingInstance == null && md?.ActingInstanceType is not null)
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{
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md.ActingInstance ??= context.SereinIoc.GetOrRegisterInstantiate(md.ActingInstanceType);
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}
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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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try
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{
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while (!FlipFlopCts.IsCancellationRequested)
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{
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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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IFlipflopContext flipflopContext = await func.Invoke(md.ActingInstance, parameters);// 首先开始等待触发器
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_ = GlobalFlipflopExecute(singleFlipFlopNode, context);
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}
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//while (!FlipFlopCts.IsCancellationRequested)
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//{
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// if (singleFlipFlopNode.NotExitPreviousNode() == false)
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// {
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// break;
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// }
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// object?[]? parameters = singleFlipFlopNode.GetParameters(context, md);
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// if (md.ActingInstance == null)
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// {
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// md.ActingInstance = context.SereinIoc.GetOrRegisterInstantiate(md.ActingInstanceType);
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// }
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// IFlipflopContext flipflopContext = await func.Invoke(md.ActingInstance, parameters);
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// ConnectionType connection = flipflopContext.State.ToContentType();
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// if (connection != ConnectionType.None)
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// {
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// singleFlipFlopNode.NextOrientation = connection;
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// singleFlipFlopNode.FlowData = flipflopContext.Data;
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// var tasks = singleFlipFlopNode.SuccessorNodes.Values
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// .SelectMany(nodeList => nodeList)
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// .Select(nextNode =>
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// {
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// var nextContext = new DynamicContext(SereinIOC, flowEnvironment);
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// nextNode.PreviousNode = singleFlipFlopNode;
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// return nextNode.StartExecution(nextContext); // 全局触发器收到信号，开始执行
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// }).ToArray();
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// await Task.WhenAll(tasks);
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// }
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// else
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// {
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// break;
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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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}
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public async Task GlobalFlipflopExecute(SingleFlipflopNode singleFlipFlopNode, IDynamicContext context)
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{
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if (FlipFlopCts.IsCancellationRequested)
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{
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return;
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}
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bool skip = true;
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var cts = context.SereinIoc.GetOrRegisterInstantiate<CancellationTokenSource>();
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Stack<NodeModelBase> stack = new Stack<NodeModelBase>();
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stack.Push(singleFlipFlopNode);
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ConnectionType connectionType = ConnectionType.IsSucceed;
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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].StartExecution(context); // 执行上游分支
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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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// 判断是否为触发器节点，如果是，则开始等待。
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if (currentNode.MethodDetails != null && currentNode.MethodDetails.MethodDynamicType == NodeType.Flipflop)
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{
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currentNode.FlowData = await currentNode.ExecuteAsync(context); // 流程中遇到了触发器
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}
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else
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{
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currentNode.FlowData = currentNode.Execute(context); // 流程中正常执行
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}
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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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}
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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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}
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}
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