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feat: Add the feature to load action loader from external assembly
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,31 @@ | ||
| using System.Reflection; | ||
| using System.Runtime.Loader; | ||
|
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| namespace Libplanet.Node.Actions; | ||
|
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| internal sealed class PluginLoadContext(string pluginPath) : AssemblyLoadContext | ||
| { | ||
| private readonly AssemblyDependencyResolver _resolver = new(pluginPath); | ||
|
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| protected override Assembly? Load(AssemblyName assemblyName) | ||
| { | ||
| var assemblyPath = _resolver.ResolveAssemblyToPath(assemblyName); | ||
| if (assemblyPath is not null) | ||
| { | ||
| return LoadFromAssemblyPath(assemblyPath); | ||
| } | ||
|
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| return null; | ||
| } | ||
|
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| protected override IntPtr LoadUnmanagedDll(string unmanagedDllName) | ||
| { | ||
| var libraryPath = _resolver.ResolveUnmanagedDllToPath(unmanagedDllName); | ||
| if (libraryPath is not null) | ||
| { | ||
| return LoadUnmanagedDllFromPath(libraryPath); | ||
| } | ||
|
|
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| return IntPtr.Zero; | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,50 @@ | ||
| using System.Reflection; | ||
| using Libplanet.Action; | ||
| using Libplanet.Action.Loader; | ||
|
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| namespace Libplanet.Node.Actions; | ||
|
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| internal static class PluginLoader | ||
| { | ||
| public static IActionLoader LoadActionLoader(string modulePath, string typeName) | ||
| { | ||
| var assembly = LoadAssembly(modulePath); | ||
| return Create<IActionLoader>(assembly, typeName); | ||
| } | ||
|
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| public static IPolicyActionsRegistry LoadPolicyActionRegistry( | ||
| string relativePath, string typeName) | ||
| { | ||
| var assembly = LoadAssembly(relativePath); | ||
| return Create<IPolicyActionsRegistry>(assembly, typeName); | ||
| } | ||
|
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| private static T Create<T>(Assembly assembly, string typeName) | ||
| where T : class | ||
| { | ||
| if (assembly.GetType(typeName) is not { } type) | ||
| { | ||
| throw new ApplicationException( | ||
| $"Can't find {typeName} in {assembly} from {assembly.Location}"); | ||
| } | ||
|
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| if (Activator.CreateInstance(type) is not T obj) | ||
| { | ||
| throw new ApplicationException( | ||
| $"Can't create an instance of {type} in {assembly} from {assembly.Location}"); | ||
| } | ||
|
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| return obj; | ||
| } | ||
|
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| private static Assembly LoadAssembly(string modulePath) | ||
| { | ||
| var loadContext = new PluginLoadContext(modulePath); | ||
| if (Path.GetFileNameWithoutExtension(modulePath) is { } filename) | ||
| { | ||
| return loadContext.LoadFromAssemblyName(new AssemblyName(filename)); | ||
| } | ||
|
|
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| throw new ApplicationException($"Can't load plugin from {modulePath}"); | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,41 @@ | ||
| using Libplanet.Action; | ||
| using Libplanet.Action.Loader; | ||
| using Libplanet.Node.Actions; | ||
|
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| namespace Libplanet.Node.Options; | ||
|
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| [Options(Position)] | ||
| public sealed class ActionOptions : OptionsBase<ActionOptions> | ||
| { | ||
| public const string Position = "Action"; | ||
|
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| public string ModulePath { get; set; } = string.Empty; | ||
|
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| public string ActionLoaderType { get; set; } = string.Empty; | ||
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| public string PolicyActionRegistryType { get; set; } = string.Empty; | ||
|
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| internal IActionLoader GetActionLoader() | ||
| { | ||
| if (ActionLoaderType != string.Empty) | ||
| { | ||
| var modulePath = ModulePath; | ||
| var actionLoaderType = ActionLoaderType; | ||
| return PluginLoader.LoadActionLoader(modulePath, actionLoaderType); | ||
| } | ||
|
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| return new AggregateTypedActionLoader(); | ||
| } | ||
|
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| internal IPolicyActionsRegistry GetPolicyActionsRegistry() | ||
| { | ||
| if (PolicyActionRegistryType != string.Empty) | ||
| { | ||
| var modulePath = ModulePath; | ||
| var policyActionRegistryType = PolicyActionRegistryType; | ||
| return PluginLoader.LoadPolicyActionRegistry(modulePath, policyActionRegistryType); | ||
| } | ||
|
|
||
| return new PolicyActionsRegistry(); | ||
| } | ||
| } |
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