8000 Do not crash when can't create telemetry mutex. by gukoff · Pull Request #15574 · PowerShell/PowerShell · GitHub
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Do not crash when can't create telemetry mutex. #15574

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Merged
merged 1 commit into from
Jun 14, 2021
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Do not crash when can't create telemetry mutex. #15574

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19 changes: 10 additions & 9 deletions src/System.Management.Automation/utils/Telemetry.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -835,29 +835,30 @@ private static Guid GetUniqueIdentifier()

// Multiple processes may start simultaneously so we need a system wide
// way to control access to the file in the case (although remote) when we have
// simulataneous shell starts without the persisted file which attempt to create the file.
using (var m = new Mutex(true, "CreateUniqueUserId"))
// simultaneous shell starts without the persisted file which attempt to create the file.
try
{
// TryCreateUniqueIdentifierAndFile shouldn't throw, but the mutex might
using var m = new Mutex(true, "CreateUniqueUserId");
m.WaitOne();
try
{
m.WaitOne();
if (TryCreateUniqueIdentifierAndFile(uuidPath, out id))
{
return id;
}
}
catch (Exception)
{
// Any problem in generating a uuid will result in no telemetry being sent.
// Try to send the failure in telemetry, but it will have no unique id.
s_telemetryClient.GetMetric(_telemetryFailure, "Detail").TrackValue(1, "mutex");
}
finally
{
m.ReleaseMutex();
}
}
catch (Exception)
{
// Any problem in generating a uuid will result in no telemetry being sent.
// Try to send the failure in telemetry, but it will have no unique id.
s_telemetryClient.GetMetric(_telemetryFailure, "Detail").TrackValue(1, "mutex");
}

// something bad happened, turn off telemetry since the unique id wasn't set.
CanSendTelemetry = false;
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