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| 1 | +using Flow.Launcher.Infrastructure; |
| 2 | +using System; |
| 3 | +using System.IO; |
| 4 | +using System.Linq; |
| 5 | +using System.Reflection; |
| 6 | +using System.Runtime.Loader; |
| 7 | + |
| 8 | +namespace Flow.Launcher.Core.Plugin |
| 9 | +{ |
| 10 | + internal class PluginAssemblyLoader : AssemblyLoadContext |
| 11 | + { |
| 12 | + private readonly AssemblyDependencyResolver dependencyResolver; |
| 13 | + |
| 14 | + private readonly AssemblyDependencyResolver referencedPluginPackageDependencyResolver; |
| 15 | + |
| 16 | + private readonly AssemblyName assemblyName; |
| 17 | + |
| 18 | + internal PluginAssemblyLoader(string assemblyFilePath) |
| 19 | + { |
| 20 | + dependencyResolver = new AssemblyDependencyResolver(assemblyFilePath); |
| 21 | + assemblyName = new AssemblyName(Path.GetFileNameWithoutExtension(assemblyFilePath)); |
| 22 | + |
| 23 | + referencedPluginPackageDependencyResolver = |
| 24 | + new AssemblyDependencyResolver(Path.Combine(Constant.ProgramDirectory, "Flow.Launcher.Plugin.dll")); |
| 25 | + } |
| 26 | + |
| 27 | + internal Assembly LoadAssemblyAndDependencies() |
| 28 | + { |
| 29 | + return LoadFromAssemblyName(assemblyName); |
| 30 | + } |
| 31 | + |
| 32 | + protected override Assembly Load(AssemblyName assemblyName) |
| 33 | + { |
| 34 | + string assemblyPath = dependencyResolver.ResolveAssemblyToPath(assemblyName); |
| 35 | + |
| 36 | + // When resolving dependencies, ignore assembly depenedencies that already exits with Flow.Launcher.Plugin |
| 37 | + // Otherwise will get unexpected behaviour with plugins, e.g. JsonIgnore attribute not honored in WebSearch or other plugins |
| 38 | + // that use Newtonsoft.Json |
| 39 | + if (assemblyPath == null || ExistsInReferencedPluginPackage(assemblyName)) |
| 40 | + return null; |
| 41 | + |
| 42 | + return LoadFromAssemblyPath(assemblyPath); |
| 43 | + } |
| 44 | + |
| 45 | + internal Type FromAssemblyGetTypeOfInterface(Assembly assembly, Type type) |
| 46 | + { |
| 47 | + var allTypes = assembly.ExportedTypes; |
| 48 | + |
| 49 | + return allTypes.First(o => o.IsClass && !o.IsAbstract && o.GetInterfaces().Contains(type)); |
| 50 | + } |
| 51 | + |
| 52 | + internal bool ExistsInReferencedPluginPackage(AssemblyName assemblyName) |
| 53 | + { |
| 54 | + return referencedPluginPackageDependencyResolver.ResolveAssemblyToPath(assemblyName) != null; |
| 55 | + } |
| 56 | + } |
| 57 | +} |
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