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Cache assembly fetches/resolution so that repeat errors aren't clogging the log

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This commit is contained in:
Robert McRackan 2022-09-24 09:48:44 -04:00
parent b979b6ddad
commit d1bb921346
1 changed files with 52 additions and 39 deletions
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25
Source/LibationFileManager/InteropFactory.cs
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@ -121,12 +121,30 @@ namespace LibationFileManager
}
*/
private static Dictionary<string, Assembly> lowEffortCache { get; } = new();
private static Assembly CurrentDomain_AssemblyResolve(object sender, ResolveEventArgs args)
{
// e.g. "System.Windows.Forms, Version=6.0.2.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"
var asmName = args.Name.Split(',')[0] + ".dll";
var here = Path.GetDirectoryName(Environment.ProcessPath);
var key = $"{asmName}|{here}";
if (lowEffortCache.TryGetValue(key, out var value))
return value;
var assembly = CurrentDomain_AssemblyResolve_internal(asmName: asmName, here: here);
lowEffortCache[key] = assembly;
//Let the runtime handle any dll not found exceptions.
if (assembly is null)
Serilog.Log.Logger.Error($"Unable to load module {args.Name}");
return assembly;
}
private static Assembly CurrentDomain_AssemblyResolve_internal(string asmName, string here)
{
/*
* Commented code used to locate assemblies from the *ConfigApp.exe's module list.
* Use this method to locate dependencies when they are not in Libation's program files directory.
@ -135,20 +153,15 @@ namespace LibationFileManager
var modulePath = ModuleList.SingleOrDefault(m => m.ModuleName.EqualsInsensitive(asmName))?.FileName;
#else
*/
var here = Path.GetDirectoryName(Environment.ProcessPath);
// find the requested assembly in the program files directory
var modulePath =
Directory.EnumerateFiles(here, asmName, SearchOption.TopDirectoryOnly)
.SingleOrDefault();
//#endif
//#endif
if (modulePath is null)
{
//Let the runtime handle any dll not found exceptions.
Serilog.Log.Logger.Error($"Unable to load module {args.Name}");
return null;
}
return Assembly.LoadFrom(modulePath);
}