Add temp logging for Npgsql switches

Author: alex-kulakov

Orm/Xtensive.Orm.PostgreSql/Sql.Drivers.PostgreSql/DriverFactory.cs

@@ -13,6 +13,7 @@
 using Xtensive.Orm;
 using Xtensive.Sql.Info;
 using Xtensive.Sql.Drivers.PostgreSql.Resources;
+using System.Reflection;
 
 namespace Xtensive.Sql.Drivers.PostgreSql
 {
@@ -212,13 +213,56 @@ private static bool SetOrGetExistingLegacyTimeStampBehaviorSwitch(bool valueToSe
 
     private static bool GetSwitchValueOrSet(string switchName, bool valueToSet)
     {
-      if (!AppContext.TryGetSwitch(switchName, out var currentValue)) {
-        AppContext.SetSwitch(switchName, valueToSet);
-        return valueToSet;
+      using (var logWriter = CreateFile(switchName)) {
+        logWriter?.WriteLine($"GetSwitchValueOrSet called for switch '{switchName}' in attempt to set it to {valueToSet}");
+        if (!AppContext.TryGetSwitch(switchName, out var currentValue)) {
+          logWriter?.WriteLine($"Switch '{switchName}' is not set to any value at the moment, setting it to {valueToSet}");
+          AppContext.SetSwitch(switchName, valueToSet);
+          logWriter?.WriteLine($"Switch '{switchName}' is set to {valueToSet}");
+          return valueToSet;
+        }
+        else {
+          logWriter?.WriteLine($"Switch '{switchName}' is already set to value {currentValue}. Setting to {valueToSet} skipped");
+          return currentValue;
+        }
       }
-      else {
-        return currentValue;
+    }
+
+    private static System.IO.TextWriter CreateFile(string switchName)
+    {
+      //F:\Projects\DataObjects.Net\Main Projects\do-public\new-master\_Build\tests\Debug\lib\net6.0
+      var runningDirectory = System.IO.Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);
+      if (!runningDirectory.Contains("_Build/tests") && !runningDirectory.Contains(@"_Build\tests")) {
+        return null;
+      }
+
+      var dirInfo = new System.IO.DirectoryInfo(runningDirectory);
+      var dotnetName = dirInfo.Name; //net6.0
+      var libFolder = dirInfo.Parent; // lib
+      var buildConfigFolder = libFolder.Parent;//Debug/Release
+
+      var tempFilesFolder = buildConfigFolder.CreateSubdirectory(dotnetName);
+      var fileToWrite = System.IO.File.CreateText(System.IO.Path.Combine(tempFilesFolder.FullName, $"Switch_{switchName.Replace('.', '_')}_{Guid.NewGuid()}.log"));
+      return fileToWrite;
+    }
+
+    private static System.IO.TextWriter CreateFile()
+    {
+      //F:\Projects\DataObjects.Net\Main Projects\do-public\new-master\_Build\tests\Debug\lib\net6.0
+      var runningDirectory = System.IO.Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);
+      if (!runningDirectory.Contains($"_Build{System.IO.Path.DirectorySeparatorChar}tests")
+          && !runningDirectory.Contains($"_Build{System.IO.Path.AltDirectorySeparatorChar}tests")) {
+        return null;
       }
+
+      var dirInfo = new System.IO.DirectoryInfo(runningDirectory);
+      var dotnetName = dirInfo.Name; //net6.0
+      var libFolder = dirInfo.Parent; // lib
+      var buildConfigFolder = libFolder.Parent;//Debug/Release
+
+      var tempFilesFolder = buildConfigFolder.CreateSubdirectory(dotnetName);
+      var fileToWrite = System.IO.File.CreateText(System.IO.Path.Combine(tempFilesFolder.FullName, $"CtorCall_{Guid.NewGuid()}.log"));
+      return fileToWrite;
     }
 
     #endregion
@@ -253,6 +297,12 @@ static DriverFactory()
 
       // DO NOT REPLACE method call with constant value when debugging, CHANGE THE PARAMETER VALUE.
       LegacyTimestamptBehaviorEnabled = SetOrGetExistingLegacyTimeStampBehaviorSwitch(valueToSet: false);
+
+      using(var logWriter = CreateFile()) {
+        logWriter.WriteLine($"Driver factory was initialized with");
+        logWriter.WriteLine($"      InfinityAliasForDatesEnabled = {InfinityAliasForDatesEnabled}");
+        logWriter.WriteLine($"      LegacyTimestamptBehaviorEnabled = {LegacyTimestamptBehaviorEnabled}");
+      }
     }
   }
 }