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Merged
merged 1 commit into from
Dec 6, 2023
Merged

Plugins: Fail to load a plugin no more prevent loading of all others #11412

merged 1 commit into from
Dec 6, 2023
+106 −4

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@pmiossec
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@pmiossec pmiossec commented Nov 30, 2023 •
edited
Loading

When a plugin fail to load and an exception is raised, no plugin was added to the Plugins collection
and so none was added to the menu in the UI.

Will mitigate the case where external plugins not (yet) compatible won't prevent internal plugins to load.

Screenshots

Before

image

After

image

image

Test methodology

Test environment(s)

  • Git Extensions 33.33.33
  • Build b98f960 (Dirty)
  • Git 2.42.0.windows.2
  • Microsoft Windows NT 10.0.22621.0
  • .NET 8.0.0
  • DPI 96dpi (no scaling)
  • Portable: False

Merge strategy

I agree that the maintainer squash merge this PR (if the commit message is clear).

✒️ I contribute this code under The Developer Certificate of Origin.

@ghost ghost assigned pmiossec Nov 30, 2023
mstv
mstv approved these changes Nov 30, 2023
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LGTM, have not run

RussKie
RussKie reviewed Dec 1, 2023
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GitUI/Plugin/PluginRegistry.cs Outdated
catch
catch (Exception ex)
{
// no-op
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// no-op

RussKie
RussKie reviewed Dec 1, 2023
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GitUI/Plugin/PluginRegistry.cs Outdated
DebugHelpers.Fail("Fail to load a plugin. Error:" + ex.Demystify());
return null;
}
}).WhereNotNull().ToArray();
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There's no need to allocate, is there?

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}).WhereNotNull().ToArray();
}).WhereNotNull();

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.WhereNotNull() is misindeted, it should be under .Select.

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RussKie commented Dec 1, 2023

Nice! I think that'd fix the problem @maraf observed in gitextensions/gitextensions.pluginmanager#73.

What was the exception? Which plugins failed?

@RussKie RussKie added the 📭 needs: author feedback More info/confirmation awaited from OP; issues typically get closed after 30 days of inactivity label Dec 1, 2023
@pmiossec
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pmiossec commented Dec 1, 2023

Nice! I think that'd fix the problem @maraf observed in gitextensions/gitextensions.pluginmanager#73.

What was the exception? Which plugins failed?

Painful session. It took me a lot of time to find the issue as the exception was swallowed (and we don't have a good logging solution).

With this fix, the exception now loggued is:

---- DEBUG ASSERTION FAILED ----
---- Assert Short Message ----
Fail to load a plugin. Error:Microsoft.VisualStudio.Composition.CompositionFailedException: An exception was thrown while initializing part "GitExtensions.PluginManager.Plugin".
 ---> System.TypeInitializationException: The type initializer for 'GitExtensions.PluginManager.PluginSettings' threw an exception.
 ---> System.TypeLoadException: Could not load type 'GitUIPluginInterfaces.BoolSetting' from assembly 'GitUIPluginInterfaces, Version=33.33.33.0, Culture=neutral, PublicKeyToken=null'.
   at static GitExtensions.PluginManager.PluginSettings()
   --- End of inner exception stack trace ---
   at bool GitExtensions.PluginManager.PluginSettings.get_HasProperties()
   at new GitExtensions.PluginManager.Plugin()
   at object RuntimeMethodHandle.InvokeMethod(object target, Void** arguments, Signature sig, bool isConstructor)
   at object System.Reflection.MethodBaseInvoker.InvokeWithNoArgs(object obj, BindingFlags invokeAttr)
   --- End of inner exception stack trace ---
   at object Microsoft.VisualStudio.Composition.RuntimeExportProviderFactory+RuntimeExportProvider+RuntimePartLifecycleTracker.CreateValue()
   at void Microsoft.VisualStudio.Composition.ExportProvider+PartLifecycleTracker.Create()
   at void Microsoft.VisualStudio.Composition.ExportProvider+PartLifecycleTracker.MoveNext(PartLifecycleState nextState)
   at void Microsoft.VisualStudio.Composition.ExportProvider+PartLifecycleTracker.MoveToState(PartLifecycleState requiredState)
   at object Microsoft.VisualStudio.Composition.ExportProvider+PartLifecycleTracker.GetValueReadyToExpose()
   at ExportInfo Microsoft.VisualStudio.Composition.ExportProvider.CreateExport(ImportDefinition importDefinition, IReadOnlyDictionary<string, object> exportMetadata, TypeRef originalPartTypeRef, TypeRef constructedPartTypeRef, string partSharingBoundary, bool nonSharedInstanceRequired, MemberRef exportingMemberRef)+() => { } [0]
   at IEnumerable<Lazy<object, object>> Microsoft.VisualStudio.Composition.ExportProvider.GetExports(Type type, Type metadataViewType, string contractName)+() => { }
   at void System.Lazy<T>.ViaFactory(LazyThreadSafetyMode mode)
   at void System.Lazy<T>.ExecutionAndPublication(LazyHelper executionAndPublication, bool useDefaultConstructor)
   at T System.Lazy<T>.CreateValue()
   at object Microsoft.VisualStudio.Composition.Export.get_Value()
   at IEnumerable<Lazy<object, object>> Microsoft.VisualStudio.Composition.ExportProvider.GetExports(Type type, Type metadataViewType, string contractName)+() => { }
   at void System.Lazy<T>.ViaFactory(LazyThreadSafetyMode mode)
   at void System.Lazy<T>.ExecutionAndPublication(LazyHelper executionAndPublication, bool useDefaultConstructor)
   at T System.Lazy<T>.CreateValue()
   at void GitUI.PluginRegistry.Initialize()+(Lazy<IGitPlugin> lazy) => { } in C:/Users/pmios/Documents/Perso/Dev/GitHub/gitextensions/GitUI/Plugin/PluginRegistry.cs:line 36
---- Assert Long Message ----

   at GitExtUtils.DebugHelpers.Fail(String message) in C:\gitextensions\GitExtUtils\DebugHelpers.cs:line 26
   at GitUI.PluginRegistry.<>c.<Initialize>b__10_0(Lazy`1 lazy) in C:\gitextensions\GitUI\Plugin\PluginRegistry.cs:line 36
   at System.Linq.Enumerable.SelectArrayIterator`2.MoveNext()
   at System.Linq.LinqExtensions.WhereNotNull[T](IEnumerable`1 source)+MoveNext() in C:\gitextensions\GitExtUtils\Linq\LinqExtensions.cs:line 180
   at GitUI.PluginRegistry.Initialize() in C:\gitextensions\GitUI\Plugin\PluginRegistry.cs:line 46
   at GitUI.CommandsDialogs.FormBrowse.<.ctor>b__50_4() in C:\gitextensions\GitUI\CommandsDialogs\FormBrowse.cs:line 277
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[TStateMachine](TStateMachine& stateMachine)
   at GitUI.CommandsDialogs.FormBrowse.<.ctor>b__50_4()
   at GitUI.TaskManager.HandleExceptionsAsync(Func`1 asyncAction, Func`2 handleExceptionAsync) in C:\gitextensions\GitExtUtils\GitUI\TaskManager.cs:line 28
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[TStateMachine](TStateMachine& stateMachine)
   at GitUI.TaskManager.HandleExceptionsAsync(Func`1 asyncAction, Func`2 handleExceptionAsync)
   at GitUI.TaskManager.<>c__DisplayClass13_0.<<FileAndForget>b__0>d.MoveNext() in C:\gitextensions\GitExtUtils\GitUI\TaskManager.cs:line 76
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
   at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.AsyncStateMachineBox`1.MoveNext(Thread threadPoolThread)
   at Microsoft.VisualStudio.Threading.AwaitExtensions.TaskSchedulerAwaiter.<>c.<UnsafeOnCompleted>b__6_0(Object state)
   at System.Threading.ThreadPoolWorkQueue.Dispatch()
   at System.Threading.PortableThreadPool.WorkerThread.WorkerThreadStart()

As I said above, I think that's due to #11397 where plugins compatible with previous version located in the user folder are not loading and throw.

@ghost ghost removed the 📭 needs: author feedback More info/confirmation awaited from OP; issues typically get closed after 30 days of inactivity label Dec 1, 2023
@pmiossec
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pmiossec commented Dec 1, 2023 •
edited
Loading

Which plugins failed?

I have 2 "plugins" in my user folder: GitExtensions.PluginManager.Plugin & GitExtensions.SolutionRunner.PluginSettings

Yes, it could be the reason why @maraf has no plugin loaded.

FYI, I don't know why and I have not investigated as the fix was solving the issue but sometimes I had some plugins loaded (3 or 4) but never the same ones.

⚠️⚠️⚠️ Thinking about it again, with #11397 breaking change, we have a real problem because the plugin manager won't load and so won't be able to upgrade itself or other plugins to a compatible version 😢 ⚠️⚠️⚠️

@pmiossec pmiossec force-pushed the fix/manage_plugin_loading_failure branch from b801ac7 to 8454b8e Compare December 1, 2023 08:11
@maraf
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maraf commented Dec 1, 2023

Will the error message be visible in VS when developing a plugin?

@pmiossec
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pmiossec commented Dec 1, 2023

Will the error message be visible in VS when developing a plugin?

It depends how GitExtensions is launched during the plugin is development.
I don't remember but I think it won't be the case 😢
If you launch GE in debug in VS, you will see the error in the output.
But if an instance of GE is launched to load your plugin, you won't.

But I think I will improve this PR with something like that:

image

And when you click, you will have the popup with error (popup to improve work in progress):
image

What do you think?

@maraf
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maraf commented Dec 1, 2023

Sounds good!

@pmiossec
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pmiossec commented Dec 1, 2023

Updated screenshots in PR description.
FYI, I have tried TaskDialog to have a better user friendly display but have decided to stick to MessageBox due to https://stackoverflow.com/questions/40388291/is-the-way-to-disable-path-shortening-in-windows-taskdialogs-c that may loose some important data. MessageBox is also not perfect but good enough.

Otherwise user will copy the error message somewhere else...
I don't think it requires more time invested.

@mstv
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mstv commented Dec 1, 2023

and we don't have a good logging solution

You could have a look #10307.

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mstv commented Dec 1, 2023

Will the error message be visible in VS when developing a plugin?

You could use Sysinternals DebugView in order to see Trace output.

gerhardol
gerhardol reviewed Dec 2, 2023
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+2 with comments

@pmiossec pmiossec force-pushed the fix/manage_plugin_loading_failure branch from 8e290e8 to a5599f7 Compare December 2, 2023 09:02
RussKie
RussKie reviewed Dec 3, 2023
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Very cool!

GitUI/Plugin/FailToLoadPlugin.cs Outdated
using GitUI.Properties;
using GitUIPluginInterfaces;

namespace GitUI
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Suggested change
namespace GitUI
namespace GitUI;

GitUI/Plugin/FailToLoadPlugin.cs Outdated

namespace GitUI
{
public partial class FailToLoadPlugin : IGitPlugin
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Does it have to be public?

GitUI/Plugin/FailToLoadPlugin.cs Outdated

namespace GitUI
{
public partial class FailToLoadPlugin : IGitPlugin
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What do you think of FailedPluginWrapper as a name?

GitUI/Plugin/FailToLoadPlugin.cs Outdated
Comment on lines 10 to 14
private readonly Exception _exception;
[GeneratedRegex("\\\"GitExtensions.([^\"]+)\\\"")]
private static partial Regex PluginNameRegex();
private string _pluginName;
public FailToLoadPlugin(Exception exception)
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[nit] ordering and whitespacing

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private readonly Exception _exception;
[GeneratedRegex("\\\"GitExtensions.([^\"]+)\\\"")]
private static partial Regex PluginNameRegex();
private string _pluginName;
public FailToLoadPlugin(Exception exception)
[GeneratedRegex("\\\"GitExtensions.([^\"]+)\\\"")]
private static partial Regex PluginNameRegex();
private readonly Exception _exception;
private string _pluginName;
public FailToLoadPlugin(Exception exception)

GitUI/Plugin/FailToLoadPlugin.cs Outdated
private string _pluginName;
public FailToLoadPlugin(Exception exception)
{
_exception = exception?.Demystify();
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Why do we need ? here? exception is declared as non-nullable.
Also, the exception must be validated, use ANE.ThrowIfNull().

GitUI/Plugin/FailToLoadPlugin.cs Outdated
if (match.Success)
{
_pluginName = match.Value;
Name = TranslatedStrings.FailedToLoadPlugin + ": " + _pluginName.Substring(0, Math.Min(50, match.Value.Length));
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Use string interpolation

GitUI/Plugin/FailToLoadPlugin.cs Outdated
_exception = exception?.Demystify();
try
{
Match match = PluginNameRegex().Match(exception.ToString());
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exception.ToString() is called multiple times.

GitUI/Plugin/PluginRegistry.cs Outdated
}
catch (Exception ex)
{
DebugHelpers.Fail("Fail to load a plugin. Error:" + ex.Demystify());
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Use string interpolation

GitUI/Plugin/PluginRegistry.cs Outdated
catch (Exception ex)
{
// no-op
DebugHelpers.Fail("Fail to load plugins. Error:" + ex.Demystify());
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Use string interpolation

GitUI/Plugin/PluginRegistry.cs
return lazy.Value;
}
catch (Exception ex)
{
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Is it possible to get some concrete information, e.g., the plugin assembly?

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Unfortunately, we have no information there provided by the failing code.
I have still changed a little the code here to display the assembly name in the error message if it is extracted successfully from the logs.

@RussKie RussKie added the 📭 needs: author feedback More info/confirmation awaited from OP; issues typically get closed after 30 days of inactivity label Dec 3, 2023
@pmiossec pmiossec force-pushed the fix/manage_plugin_loading_failure branch from a5599f7 to 692f98a Compare December 3, 2023 13:49
@ghost ghost removed the 📭 needs: author feedback More info/confirmation awaited from OP; issues typically get closed after 30 days of inactivity label Dec 3, 2023
@pmiossec
Plugins: Fail to load a plugin no more prevent loading of all others
dc42b06 
When a plugin fail to load and an exception is raised,
no plugin was added to the `Plugins` collection
and so none was added to the menu in the UI.

Instead display plugin loading failure in plugin Menu

Will mitigate the case where external plugins not (yet) compatible
won't prevent internal plugins to load.
@pmiossec pmiossec force-pushed the fix/manage_plugin_loading_failure branch from 692f98a to dc42b06 Compare December 3, 2023 13:57
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pmiossec commented Dec 3, 2023

Done.

mstv
mstv approved these changes Dec 3, 2023
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LGTM, have not run

@RussKie RussKie merged commit a37a45b into gitextensions:master Dec 6, 2023
@ghost ghost added this to the vNext milestone Dec 6, 2023
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RussKie commented Dec 6, 2023

Thank you!

@pmiossec pmiossec deleted the fix/manage_plugin_loading_failure branch December 6, 2023 08:00
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