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Fix NullReferenceException in DSC ClearCache()

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2021-05-24 14:37:19 -07:00
parent a5787f0cb3
commit 76f41549ad
1 changed files with 10 additions and 5 deletions
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src/DscSubsystem/JsonDscClassCache.cs
+10 -5
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@@ -95,9 +95,14 @@ namespace Microsoft.PowerShell.DesiredStateConfiguration.Internal.CrossPlatform
private static readonly HashSet<string> s_hiddenResourceCache =
new HashSet<string>(StringComparer.OrdinalIgnoreCase) { "MSFT_BaseConfigurationProviderRegistration", "MSFT_CimConfigurationProviderRegistration", "MSFT_PSConfigurationProviderRegistration" };
// A collection to prevent circular importing case when Import-DscResource does not have a module specified
/// <summary>
/// Gets a collection to prevent circular importing case when Import-DscResource does not have a module specified.
/// </summary>
private static HashSet<string> CurrentImportDscResourceInvocations
=> t_currentImportDscResourceInvocations ??= new HashSet<string>(StringComparer.OrdinalIgnoreCase);
[ThreadStatic]
private static readonly HashSet<string> t_currentImportDscResourceInvocations = new(StringComparer.OrdinalIgnoreCase);
private static HashSet<string> t_currentImportDscResourceInvocations;
/// <summary>
/// Gets DSC class cache for this runspace.
@@ -357,7 +362,7 @@ namespace Microsoft.PowerShell.DesiredStateConfiguration.Internal.CrossPlatform
ClassCache.Clear();
ByClassModuleCache.Clear();
CacheResourcesFromMultipleModuleVersions = false;
t_currentImportDscResourceInvocations.Clear();
CurrentImportDscResourceInvocations.Clear();
}
private static string GetModuleQualifiedResourceName(string moduleName, string moduleVersion, string className, string resourceName)
@@ -1136,9 +1141,9 @@ namespace Microsoft.PowerShell.DesiredStateConfiguration.Internal.CrossPlatform
// Lookup the required resources under available PowerShell modules when modulename is not specified
// Make sure that this is not a circular import/parsing
var callLocation = string.Join(':', scriptExtent.File, scriptExtent.StartLineNumber, scriptExtent.StartColumnNumber, scriptExtent.Text);
if (!t_currentImportDscResourceInvocations.Contains(callLocation))
if (!CurrentImportDscResourceInvocations.Contains(callLocation))
{
t_currentImportDscResourceInvocations.Add(callLocation);
CurrentImportDscResourceInvocations.Add(callLocation);
using (var powerShell = System.Management.Automation.PowerShell.Create(RunspaceMode.CurrentRunspace))
{
powerShell.AddCommand("Get-Module");