PowerShell Serilog Logging Module

The PSSerilog module provides logging based on the Serilog library.

Installation

The module is distributed as a Windows Installer package (the PowerShell Gallery is not suitable for some enterprises).

Run the installer manually or in unattended mode:

msiexec.exe /i ps-serilog.msi /qn

The default installation path is:

%ProgramFiles%\WindowsPowerShell\Modules\PSSerilog

Documentation

Use Get-Command and Get-Help to enumerate the cmdlets with this module and obtain their documentation:

Get-Command -Module PSSerilog
Get-Help New-SerilogLoggerConfiguration -Full

Examples

• Create a basic logger using a sane pattern:

  try
  {
      $path = [IO.Path]::ChangeExtension($MyInvocation.MyCommand.Path, '.log')
      $logger = New-SerilogBasicLogger -Path $path -ErrorAction Stop
  }
  catch
  {
      throw
  }
  
  function main
  {
      [CmdletBinding()]
      param()
  
      $logger.Information('Executing script...')
  
      # Your code follows.
  }
  
  try
  {
      main -ErrorAction Stop
  }
  catch
  {
      $logger.Fatal($_.Exception, 'Execution failed.')
  
      throw
  }
  finally
  {
      # Call Dispose() here and not Close-SerilogDefaultLogger as the instance was not applied to the static logger.
      $logger.Dispose()
  }

• Create a basic, named root logger and apply that root logger to the Serilog default static logger:

  $name = [IO.Path]::GetFileNameWithoutExtension($MyInvocation.MyCommand.Name)
  $path = [IO.Path]::ChangeExtension($MyInvocation.MyCommand.Path, '.log')
  $logger = New-SerilogBasicLogger -Path $path -SourceContext $name -ErrorAction Stop |
      Set-SerilogDefaultLogger
  
  try
  {
      # The other-script.ps1 can call Get-SerilogDefaultLogger to get the
      # root logger, and either use it, or create additional named loggers.
      & "$PSScriptRoot\other-script.ps1"
  }
  catch
  {
      $logger.Fatal($_.Exception, 'Execution failed.')
  
      throw
  }
  finally
  {
      Close-SerilogDefaultLogger
  }

  Warning Don't call Set-SerilogDefaultLogger more than once without calling Close-SerilogDefaultLogger.

• Create a custom logger and a global context:

  $template = '[{Timestamp:yyyy-MM-dd HH:mm:ss.fff}] [{Level}] [{MyValue}] {Message:l}{NewLine}{Exception}'
  $configuration = New-SerilogLoggerConfiguration -MinimumLevel Verbose -Properties @{MyValue=42} |
      Add-SerilogSinkConsole -OutputTemplate $template
  
  $logger = New-SerilogLogger -Configuration $configuration
  $logger.Information('Message 1')

  Results in:

  [2023-05-28 18:27:07.489] [Information] [42] Message 1