Out-MessageException.ps1

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function Out-MessageException {
<#
.SYNOPSIS
Writes an error record to a log target.
 
.DESCRIPTION
Writes an error record to a log target.
 
This Cmdlet writes a complete ErrorRecord to a log target including the actual ErrorRecord, the exception and a stack trace. If the exception contains inner exceptions they will be written to the log target as well. Normally this Cmdlet will not be called directly but only inside a `trap` or `catch` block.
 
The Cmdlet sets `$fReturn` to `$true` and returns `$null` if the exception message of the ErrorRecord equals `$gotoSuccess`. No message is logged in this case. Otherwise the Cmdlet sets `$fReturn` to `$false`, sets `$OutputParameter` to `$null` and returns `$null`. If the exception message of the ErrorRecord equals `$gotoError` a terminating error is also generated.
 
.OUTPUTS
This Cmdlet does not return a value.
 
.EXAMPLE
This example calls a method with a try/catch block. Upon exception a custom error record is created and written to the log via `Out-MessageException`.
 
function Funcy($InputObject)
{
    # main function code goes here ...
     
    try
    {
        $result = Some-ArbitraryHelperCmdlet;
    }
    catch
    {
        $er = New-CustomErrorRecord -msg "arbitrary-message" -cat NotSpecified -o "arbitrary-object";
        Out-MessageException $er;
    }
     
    # some more processing ...
}
 
.LINK
Online Version: http://dfch.biz/biz/dfch/PS/System/Logging/Out-MessageException/
 
.NOTES
See module manifest for dependencies and further requirements.
 
#>

[CmdletBinding(
    HelpURI = 'http://dfch.biz/biz/dfch/PS/System/Logging/Out-MessageException/'
)]
PARAM
(
    # Specifies the error record to be logged
    [Parameter(Mandatory = $true, Position = 0)]
    [System.Management.Automation.ErrorRecord] $ErrorRecord
)

    # only for compatibility with older scripts that use $gotoSuccess
    if($gotoSuccess -eq $ErrorRecord.Exception.Message) 
    {
        $fReturn = $true;
        return $null;
    } 

    $callStack = Get-PSCallStack;
    $fn = $callStack[1].Command;
    $sb = New-Object System.Text.StringBuilder;
    $null = $sb.Append(("[{0}] '{1}' [{2}]" -f $ErrorRecord.FullyQualifiedErrorId, $ErrorRecord.Exception.Message, $ErrorRecord.Exception.GetType()));
    try
    {
        $null = $sb.Append((Out-String -InputObject (fl -Property * -Force -InputObject $ErrorRecord.Exception)));
    }
    catch
    {
        $null = $sb.Append((Out-String -InputObject $ErrorRecord.Exception));
        if($ErrorRecord.Exception.InnerException)
        {
            $null = $sb.Append((Out-String -InputObject $ErrorRecord.Exception.InnerException));
        }
    }
    $null = $sb.Append((Out-String -InputObject (Format-Table -AutoSize -Property Location,Command,Arguments -InputObject (Get-PSCallStack))));

    $innerEx = $ErrorRecord.Exception.InnerException;
    while($innerEx)
    {
        $null = $sb.Append(("`r`n[###InnerException###] '{0}' [{1}]" -f $innerEx.Message, $innerEx.GetType()));
        $null = $sb.Append((Out-String -InputObject (fl -Property * -Force -InputObject $innerEx)));
        $innerEx = $innerEx.InnerException;
    }
    
    [string] $ErrorText = $sb.ToString();
    $null = $sb.Clear();
    $sb = $null;
    
    Log-Error $fn $ErrorText -fac 3;

    $fReturn = $false;
    $OutputParameter = $null;

    if($gotoError -eq $ErrorRecord.Exception.Message) 
    {
        $PSCmdlet.ThrowTerminatingError($ErrorRecord);
    } 
    
    return $null;
}

Set-Alias -Name Log-Exception -Value Out-MessageException;
if($MyInvocation.ScriptName) { Export-ModuleMember -Function Out-MessageException -Alias 'Log-Exception'; } 

#
# Copyright 2015 d-fens GmbH
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#

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