What is the process of logging from an async thread in an MSBuild task?

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The process of logging from an async thread in an MSBuild task involves the following steps:

1. Import the Microsoft.Build.Utilities.Core namespace to access the TaskLoggingExtension class.

2. Instantiate the AsyncTask class to run an asynchronous task.

3. Use the Log property of the TaskLoggingExtension class to access the logger.

4. Use the Log method of the logger to log messages.

5. Use the await keyword to await any asynchronous operations.

Here's an example of logging messages from an async thread in an MSBuild task:

using Microsoft.Build.Utilities.Core;
using System.Threading.Tasks;

public class MyTask : Task
{
    public override bool Execute()
    {
        AsyncTask.Run(async () =>
        {
            Log.LogMessage(MessageImportance.High, "Starting async operation.");

            // Perform some asynchronous operation here.
            await Task.Delay(1000);

            Log.LogMessage(MessageImportance.High, "Async operation completed.");
        });

        return true;
    }
}

In this example, we use the AsyncTask.Run method to run an asynchronous operation. Inside the async delegate, we use the Log property of the TaskLoggingExtension class to access the logger, and use the Log method to log messages. The await keyword is used to await the Task.Delay method, which simulates an asynchronous operation.