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https://gitee.com/langsisi_admin/serein-flow
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重新设计了FlowLIbrary相关类；为工作台默认添加了基础依赖、默认画布。
This commit is contained in:
fengjiayi
@@ -1,13 +1,7 @@
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using Microsoft.CodeAnalysis;
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using Microsoft.CodeAnalysis.CSharp;
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using Microsoft.CodeAnalysis.Emit;
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using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using System.Reflection;
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using System.Text;
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using System.Threading.Tasks;
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namespace Serein.NodeFlow.Tool
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{
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@@ -1,258 +0,0 @@
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using Serein.Library;
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using Serein.Library.Utils;
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using Serein.NodeFlow.Tool;
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using System;
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using System.Collections.Concurrent;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.Globalization;
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using System.IO;
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using System.Linq;
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using System.Reflection;
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using System.Text;
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using static System.Runtime.InteropServices.JavaScript.JSType;
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namespace Serein.NodeFlow
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{
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public class LibraryMdDd
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{
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public MethodDetails MethodDetails { get; }
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public MethodInfo MethodInfo { get; }
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public DelegateDetails DelegateDetails { get; }
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public LibraryMdDd(MethodInfo methodInfo, MethodDetails methodDetails, DelegateDetails delegateDetails)
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{
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MethodDetails = methodDetails;
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MethodInfo = methodInfo;
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DelegateDetails = delegateDetails;
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}
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}
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/// <summary>
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/// 加载在流程中的程序集依赖
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/// </summary>
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public class FlowLibrary
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{
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public Assembly Assembly { get; private set; }
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//private readonly Action actionOfUnloadAssmbly;
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/*, Action actionOfUnloadAssmbly*/
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//this.actionOfUnloadAssmbly = actionOfUnloadAssmbly;
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public FlowLibrary(Assembly assembly)
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{
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this.Assembly = assembly;
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this.FullName = Path.GetFileName(Assembly.Location);
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this.FilePath = Assembly.Location;
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}
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public FlowLibrary(Assembly assembly,
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string filePath)
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{
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this.Assembly = assembly;
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this.FullName = Path.GetFileName(filePath); ;
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this.FilePath = filePath;
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}
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public string FullName { get; private set; }
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public string FilePath { get; private set; }
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/// <summary>
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/// 加载程序集时创建的方法描述
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/// Key ： 方法名称
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/// Value ：方法详情
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/// </summary>
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public ConcurrentDictionary<string, MethodDetails> MethodDetailss { get; } = new ConcurrentDictionary<string, MethodDetails>();
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public ConcurrentDictionary<string, MethodInfo> MethodInfos { get; } = new ConcurrentDictionary<string, MethodInfo>();
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/// <summary>
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/// 管理通过Emit动态构建的委托
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/// Key ：方法名称
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/// Value ：方法详情
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/// </summary>
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public ConcurrentDictionary<string, DelegateDetails> DelegateDetailss { get; } = new ConcurrentDictionary<string, DelegateDetails>();
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/// <summary>
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/// 记录不同的注册时机需要自动创建全局唯一实例的类型信息
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/// </summary>
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public ConcurrentDictionary<RegisterSequence, List<Type>> RegisterTypes { get; } = new ConcurrentDictionary<RegisterSequence, List<Type>>();
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/// <summary>
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/// 卸载当前程序集以及附带的所有信息
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/// </summary>
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public void Upload()
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{
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DelegateDetailss.Clear();
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RegisterTypes.Clear();
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MethodDetailss.Clear();
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//actionOfUnloadAssmbly?.Invoke();
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}
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/// <summary>
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/// 转为依赖信息
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/// </summary>
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/// <returns></returns>
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public NodeLibraryInfo ToInfo()
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{
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var assemblyName = Assembly.GetName().Name;
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return new NodeLibraryInfo
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{
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AssemblyName = assemblyName,
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FileName = this.FullName,
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FilePath = this.FilePath,
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};
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}
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/// <summary>
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/// 动态加载程序集
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/// </summary>
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/// <param name="assembly">程序集本身</param>
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/// <returns></returns>
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public bool LoadAssembly()
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{
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Assembly assembly = this.Assembly;
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#region 检查入参
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// 加载DLL，创建 MethodDetails、实例作用对象、委托方法
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var assemblyName = assembly.GetName().Name;
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if (string.IsNullOrEmpty(assemblyName)) // 防止动态程序集没有定义程序集名称
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{
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return false;
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}
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List<Type> types;
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try
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{
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types = assembly.GetTypes().ToList(); // 获取程序集中的所有类型
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if (types.Count < 0) // 防止动态程序集中没有类型信息？
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{
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return false;
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}
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}
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catch (ReflectionTypeLoadException ex)
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{
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// 获取加载失败的类型
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var loaderExceptions = ex.LoaderExceptions;
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foreach (var loaderException in loaderExceptions)
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{
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SereinEnv.WriteLine(InfoType.ERROR, loaderException?.Message);
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}
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return false;
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}
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#endregion
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#region 获取 DynamicFlow 特性的流程控制器，如果没有退出
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// Type ： 具有 DynamicFlowAttribute 标记的类型
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// string ： 类型元数据 DynamicFlowAttribute 特性中的 Name 属性 （用于生成方法描述时，添加在方法别名中提高可读性）
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List<(Type Type, string Name)> scanTypes = new List<(Type Type, string Name)>();
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// (Type, string)
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// Type ： 具有 DynamicFlowAttribute 标记的类型
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// string ： 类型元数据 DynamicFlowAttribute 特性中的 Name 属性
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types = types.Where(type => type.GetCustomAttribute<DynamicFlowAttribute>() is DynamicFlowAttribute dynamicFlowAttribute
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&& dynamicFlowAttribute.Scan).ToList();
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foreach (var type in types)
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{
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if (type.GetCustomAttribute<DynamicFlowAttribute>() is DynamicFlowAttribute dynamicFlowAttribute)
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{
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scanTypes.Add((type, dynamicFlowAttribute.Name));
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}
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}
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if (scanTypes.Count == 0)
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{
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// 类型没有流程控制器
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return false;
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}
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#endregion
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#region 创建对应的方法元数据
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// 从 scanTypes.Type 创建的方法信息
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// Md : 方法描述
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// Dd ：方法对应的Emit委托
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List<LibraryMdDd> detailss = new List<LibraryMdDd>();
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// 遍历扫描的类型
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foreach ((var type, var flowName) in scanTypes)
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{
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var methodInfos = NodeMethodDetailsHelper.GetMethodsToProcess(type);
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foreach (var methodInfo in methodInfos) // 遍历流程控制器类型中的方法信息
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{
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// 尝试创建
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if (!NodeMethodDetailsHelper.TryCreateDetails(type, methodInfo, assemblyName,
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out var mi, out var md, out var dd)) // 返回的描述
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{
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SereinEnv.WriteLine(InfoType.ERROR, $"无法加载方法信息：{assemblyName}-{type}-{methodInfo}");
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continue;
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}
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md.MethodAnotherName = flowName + md.MethodAnotherName; // 方法别名
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detailss.Add(new LibraryMdDd(mi, md, dd));
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}
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}
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#endregion
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#region 检查是否成功加载，如果成功，则真正写入到缓存的集合中
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if (detailss.Count == 0)
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{
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return false;
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}
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// 简单排序一下
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//detailss = detailss.OrderBy(k => k.MethodDetails.MethodName,).ToList();
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detailss.Sort((a, b) => string.Compare(a.MethodDetails.MethodName, b.MethodDetails.MethodName, StringComparison.OrdinalIgnoreCase));
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foreach (var item in detailss)
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{
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SereinEnv.WriteLine(InfoType.INFO, "loading method : " + item.MethodDetails.MethodName);
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}
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//detailss.Sort((a, b) => string.Compare());
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#region 加载成功，缓存所有方法、委托的信息
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foreach (var item in detailss)
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{
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var key = item.MethodDetails.MethodName;
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MethodDetailss.TryAdd(key, item.MethodDetails);
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MethodInfos.TryAdd(key, item.MethodInfo);
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DelegateDetailss.TryAdd(key, item.DelegateDetails);
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}
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#endregion
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#region 加载成功，开始获取并记录所有需要自动实例化的类型（在流程启动时）
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foreach (Type type in types)
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{
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if (type.GetCustomAttribute<AutoRegisterAttribute>() is AutoRegisterAttribute attribute)
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{
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if (!RegisterTypes.TryGetValue(attribute.Class, out var valus))
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{
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valus = new List<Type>();
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RegisterTypes.TryAdd(attribute.Class, valus);
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}
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valus.Add(type);
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}
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}
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#endregion
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#endregion
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return true;
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}
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}
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}
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59
NodeFlow/Tool/FlowLibraryAssemblyContext.cs
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59
NodeFlow/Tool/FlowLibraryAssemblyContext.cs
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@@ -0,0 +1,59 @@
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using System.Reflection;
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using System.Runtime.Loader;
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namespace Serein.NodeFlow.Tool
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{
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/// <summary>
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/// 流程依赖加载
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/// </summary>
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public class FlowLibraryAssemblyContext : AssemblyLoadContext
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{
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private readonly AssemblyDependencyResolver _resolver;
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/// <summary>
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/// 创建新的加载上下文
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/// </summary>
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/// <param name="baseLibraryPath">流程基础依赖类库路径</param>
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/// <param name="name"></param>
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public FlowLibraryAssemblyContext(string baseLibraryPath, string name) : base(name, isCollectible: true)
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{
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_resolver = new AssemblyDependencyResolver(baseLibraryPath);
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}
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/// <summary>
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/// 加载指定的程序集
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/// </summary>
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/// <param name="assemblyName"></param>
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/// <returns></returns>
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protected override Assembly? Load(AssemblyName assemblyName)
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{
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string? assemblyPath = _resolver.ResolveAssemblyToPath(assemblyName); // 加载程序集
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if (!string.IsNullOrEmpty(assemblyPath))
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{
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var assembly = Default.LoadFromAssemblyPath(assemblyPath); // 通过默认方式进行加载程序集及相关依赖
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//var assembly = LoadFromAssemblyPath(assemblyPath);
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return assembly;
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}
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else
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{
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return Default.Assemblies.FirstOrDefault(x => x.FullName == assemblyName.FullName);
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}
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// return null;
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// 构建依赖项的路径
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//string assemblyPath = Path.Combine(AppContext.BaseDirectory, assemblyName.Name + ".dll");
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//if (File.Exists(assemblyPath))
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//{
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// return LoadFromAssemblyPath(assemblyPath);
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//}
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//assemblyPath = Path.Combine(filePath, assemblyName.Name + ".dll");
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//if (File.Exists(assemblyPath))
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//{
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// return LoadFromAssemblyPath(assemblyPath);
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//}
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//return null; // 如果没有找到，返回 null
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}
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}
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}
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44
NodeFlow/Tool/FlowLibraryAssemblyContext2.cs
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44
NodeFlow/Tool/FlowLibraryAssemblyContext2.cs
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@@ -0,0 +1,44 @@
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Reflection;
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using System.Runtime.Loader;
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using System.Text;
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using System.Threading.Tasks;
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namespace Serein.NodeFlow.Model.Library
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{
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/// <summary>
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/// 流程依赖加载
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/// </summary>
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public class FlowLibraryAssemblyContext : AssemblyLoadContext
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{
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private readonly AssemblyDependencyResolver _resolver;
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/// <summary>
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/// 创建新的加载上下文
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/// </summary>
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/// <param name="sereinFlowLibraryPath">类库路径</param>
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/// <param name="name"></param>
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public FlowLibraryAssemblyContext(string sereinFlowLibraryPath, string name) : base(name, isCollectible: true)
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{
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_resolver = new AssemblyDependencyResolver(sereinFlowLibraryPath);
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}
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protected override Assembly? Load(AssemblyName assemblyName)
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{
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string? assemblyPath = _resolver.ResolveAssemblyToPath(assemblyName);
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if (!string.IsNullOrEmpty(assemblyPath))
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{
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var assembly = Default.LoadFromAssemblyPath(assemblyPath);
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//var assembly = LoadFromAssemblyPath(assemblyPath);
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return assembly;
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}
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else
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{
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return Default.Assemblies.FirstOrDefault(x => x.FullName == assemblyName.FullName);
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}
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}
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}
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}
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