initial commit

2025-02-27 15:01:27 +01:00
commit e732e649df
4 changed files with 656 additions and 0 deletions
--- a/doptPlugin/Plugin.cs
+++ b/doptPlugin/Plugin.cs
@@ -0,0 +1,134 @@
+using Python.Runtime;
+using System;
+using static System.Net.Mime.MediaTypeNames;
+using System.IO;
+using System.Reflection;
+
+namespace doptPlugin
+{
+    public class Plugin
+    {
+        internal const string relPathToPyDll = @".\python\python311.dll";
+        internal const string relPathToExtensionDlls = @".\python\DLLs";
+        internal const string relPathToVirtualEnv = @".\python\.venv";
+        internal const string relPathToPythonInit = @".\python\";
+        internal const string langMainBaseFolderName = "bin";
+        internal const string langMainStopSearchFolderName = "python";
+        internal const string doptTOMPluginLibraryUsage = "1";
+        private IntPtr _threadState;
+        private bool _prepared = false;
+        private bool _initialised = false;
+
+        public Plugin() 
+        {
+            PrepareEnv();
+        }
+
+        internal void PrepareEnv()
+        {
+            Type t = typeof(Plugin);
+            Assembly assembly = t.Assembly;
+            Console.WriteLine($"Location:\n{assembly.Location}\n---\nCodeBase:\n{assembly.CodeBase}");
+            string assemPath = assembly.CodeBase;
+            if (assemPath.StartsWith("file:///"))
+            {
+                assemPath = assemPath.Replace("file:///", "");
+            }
+            string dllDir = System.IO.Path.GetDirectoryName(assemPath);
+            Console.WriteLine($"Current DLL Dir: {dllDir}");
+
+            string pathToPyDll = Path.Combine(dllDir, relPathToPyDll);
+            string pathToExtensionDlls = Path.Combine(dllDir, relPathToExtensionDlls);
+            string pathToVirtualEnv = Path.Combine(dllDir, relPathToVirtualEnv);
+            string pathToPythonInit = Path.Combine(dllDir, relPathToPythonInit);
+
+            if (!File.Exists(pathToPyDll))
+            {
+                throw new FileNotFoundException($"Python DLL not found at: {pathToPyDll}");
+            }
+            else if (!Directory.Exists(pathToExtensionDlls))
+            {
+                throw new DirectoryNotFoundException($"Python Extension Dlls not found at: {pathToExtensionDlls}");
+            }
+            else if (!Directory.Exists(pathToVirtualEnv))
+            {
+                throw new DirectoryNotFoundException($"Python Virtual Env not found at: {pathToVirtualEnv}");
+            }
+            else if (!Directory.Exists(pathToPythonInit))
+            {
+                throw new DirectoryNotFoundException($"Python base directory not found at: {pathToPythonInit}");
+            }
+            // environment preparation
+            Environment.SetEnvironmentVariable("PYTHONNET_PYDLL", pathToPyDll, EnvironmentVariableTarget.Process);
+            Environment.SetEnvironmentVariable("LANG_MAIN_BASE_FOLDERNAME", langMainBaseFolderName, EnvironmentVariableTarget.Process);
+            Environment.SetEnvironmentVariable("LANG_MAIN_STOP_SEARCH_FOLDERNAME", langMainStopSearchFolderName, EnvironmentVariableTarget.Process);
+            Environment.SetEnvironmentVariable("DOPT_TOM_PLUGIN_LIBRARY_USAGE", doptTOMPluginLibraryUsage, EnvironmentVariableTarget.Process);
+            var path = Environment.GetEnvironmentVariable("PATH").TrimEnd(';');
+            path = string.IsNullOrEmpty(path) ? pathToVirtualEnv : path + ";" + pathToVirtualEnv;
+            Environment.SetEnvironmentVariable("PATH", path, EnvironmentVariableTarget.Process);
+            Environment.SetEnvironmentVariable("PYTHONHOME", pathToVirtualEnv, EnvironmentVariableTarget.Process);
+            Environment.SetEnvironmentVariable("PYTHONPATH", $@"{pathToPythonInit}\Lib;{pathToVirtualEnv}\Lib\site-packages;{pathToVirtualEnv}\Lib;{pathToExtensionDlls}", EnvironmentVariableTarget.Process);
+
+            PythonEngine.PythonHome = pathToVirtualEnv;
+            PythonEngine.PythonPath = Environment.GetEnvironmentVariable("PYTHONPATH", EnvironmentVariableTarget.Process);
+
+            _prepared = true;
+        }
+
+        internal void Initialise()
+        {
+            if (!_prepared) PrepareEnv();
+
+            PythonEngine.Initialize();
+            _threadState = PythonEngine.BeginAllowThreads(); // release GIL for use in other threads
+
+            _initialised = true;
+        }
+
+            internal void Finalise()
+        {
+            PythonEngine.EndAllowThreads(_threadState);
+            /*
+             * The shutdown method leads to a Exception because the unsafe BinaryFormatter is used.
+             * Therefore the unsafe formatter option can be allowed temporarily. A fix is already applied,
+             * but not yet published.
+             * see: https://github.com/pythonnet/pythonnet/issues/2282
+            */
+            AppContext.SetSwitch("System.Runtime.Serialization.EnableUnsafeBinaryFormatterSerialization", true);
+            PythonEngine.Shutdown();
+            AppContext.SetSwitch("System.Runtime.Serialization.EnableUnsafeBinaryFormatterSerialization", false);
+
+            _initialised = false;
+        }
+
+        private void Run() // for testing purposes
+        {
+            if (!_initialised) Initialise();
+
+            using (Py.GIL())
+            {
+                dynamic np = Py.Import("numpy");
+                Console.WriteLine(np.cos(np.pi * 2));
+                dynamic rand = Py.Import("random");
+                Console.WriteLine(rand.randint(1, 2));
+                dynamic pathlib = Py.Import("pathlib");
+                dynamic ret = pathlib.Path.cwd();
+                Console.WriteLine(ret);
+            }
+
+            Finalise();
+        }
+        public void RunOnCSV(string identifier, string filename)
+        {
+            if (!_initialised) Initialise();
+
+            using (Py.GIL())
+            {
+                dynamic tomWrapperPipeline = Py.Import("tom_plugin.pipeline");
+                tomWrapperPipeline.run_on_csv_data(identifier, filename);
+            }
+
+            Finalise();
+        }
+    }
+}
--- a/doptPlugin/doptPlugin.csproj
+++ b/doptPlugin/doptPlugin.csproj
@@ -0,0 +1,13 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>netstandard2.0</TargetFramework>
+    <PlatformTarget>x64</PlatformTarget>
+    <Version>0.1.1-beta1</Version>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="pythonnet" Version="3.0.4" />
+  </ItemGroup>
+
+</Project>