/
PowerShellLoggerProvider.cs
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/
PowerShellLoggerProvider.cs
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using Microsoft.Extensions.Logging;
using Microsoft.Extensions.Options;
using System;
using System.Collections.Concurrent;
using System.Management.Automation;
namespace Svrooij.PowerShell.DependencyInjection.Logging;
#nullable enable
/// <summary>
/// <see cref="ILoggerProvider"/> that outputs to the PowerShell <see cref="PSCmdlet"/>
/// </summary>
[ProviderAlias("Powershell")]
public sealed class PowerShellLoggerProvider : ILoggerProvider
{
private PSCmdlet? cmdlet;
private readonly IDisposable? _onChangeToken;
private PowerShellLoggerConfiguration _currentConfig;
private readonly ConcurrentDictionary<string, PowerShellLogger> _loggers =
new(StringComparer.OrdinalIgnoreCase);
/// <summary>
/// Creates a new instance of <see cref="PowerShellLoggerProvider"/>
/// </summary>
/// <param name="config">Auto loaded configuration</param>
public PowerShellLoggerProvider(IOptionsMonitor<PowerShellLoggerConfiguration> config)
{
_currentConfig = config.CurrentValue;
_onChangeToken = config.OnChange(updatedConfig => _currentConfig = updatedConfig);
}
private PowerShellLoggerConfiguration GetCurrentConfig()
{
return _currentConfig;
}
internal void SetCmdlet(PSCmdlet cmdlet)
{
this.cmdlet = cmdlet;
}
/// <summary>
/// Creates a new <see cref="ILogger"/> instance.
/// </summary>
/// <param name="categoryName">Category name to use</param>
/// <returns><see cref="ILogger"/></returns>
public ILogger CreateLogger(string categoryName)
{
// What to do if cmdlet is null?
return _loggers.AddOrUpdate(
categoryName,
name => new PowerShellLogger(name, GetCurrentConfig, cmdlet!),
(name, logger) => logger
);
}
/// <summary>
/// Dispose the provider
/// </summary>
public void Dispose()
{
_loggers.Clear();
_onChangeToken?.Dispose();
}
}