EZLog.psm1
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 |
#Requires -Version 2.0 $ErrorActionPreference = 'Stop' Add-Type -TypeDefinition @" public enum MsgCategory { INF = 0, WAR = 1, ERR = 2 } "@ Function Write-EZLog { <# .Synopsis Utility cmdlet to write logs to disk in an easy and pragmatic way. .DESCRIPTION This cmdlet allows to write timestamped and nice formatted logs with a header and footer. It also allows to specify if the log entry being written is an info, a warning or an error. The header contains the following information : - full script path of the caller, - account under the script was run, - computer name of the machine whose executed the script, - and more... The footer contains the elapsed time from the beginning of the log session. .PARAMETER Header Mandatory switch to start a log session. .PARAMETER Category Category can be one of the following value : INF, WAR, ERR .PARAMETER Message Specify the content of the data to log. .PARAMETER Footer Mandatory switch to end a log session. If you omit to close your log session, you won't know how much time your script was running. .EXAMPLE First thing to do is write a header and define a log file where the data will be written. PS > Write-EZLog -Header -LogFile C:\logs\mylogfile.log Next, anywhere in your script when you need to write a log, do one of the folowing command: PS > Write-EZLog -Category INF -Message 'This is an info to be written in the log file' PS > Write-EZLog -Category WAR -Message 'This is a warning to be written in the log file' PS > Write-EZLog -Category ERR -Message 'This is an error to be written in the log file' Finaly, to close your logfile you need to write a footer, just do that: PS > Write-EZLog -Footer .EXAMPLE If you want to see the logs in the PowerShell console whereas they are still written to disk, you can specify the -ToScreen switch. Info entries will be written in cyan color, Yellow for warnings, and Red for the errors. PS > Write-EZLog -Category WAR -Message 'This is a warning to be written in the log file' -ToScreen .NOTES AUTHOR: Arnaud PETITJEAN - arnaud@powershell-scripting.com VERSION: 1.3.0 LASTEDIT: 2016/09/14 #> [cmdletBinding(DefaultParameterSetName="set1", SupportsShouldProcess=$False)] PARAM ( [parameter(Mandatory=$true, ParameterSetName="set1", ValueFromPipeline=$false, position=0)] [MsgCategory]$Category, [parameter(Mandatory=$true, ParameterSetName="set1", ValueFromPipeline=$false, position=1)] [Alias("Msg")] [String]$Message, [parameter(Mandatory=$true, ParameterSetName="set2", ValueFromPipeline=$false)] [Switch]$Header, [parameter(Mandatory=$true, ParameterSetName="set3", ValueFromPipeline=$false)] [Switch]$Footer, [parameter(Mandatory=$true, ParameterSetName="set2", ValueFromPipeline=$false)] [String]$LogFile, [parameter(Mandatory=$false, ValueFromPipeline=$false)] [Switch]$ToScreen=$false ) $Color = 'Cyan' Switch ($PsCmdlet.ParameterSetName) { "set1" { $date = Get-Date -UFormat "%Y-%m-%d %H:%M:%S" switch ($Category) { INF { $Message = "$date; INF; $Message"; $Color = 'Cyan' ; break } WAR { $Message = "$date; WAR; $Message"; $Color = 'Yellow' ; break } ERR { $Message = "$date; ERR; $Message"; $Color = 'Red' ; break } } Add-Content -Path $Global:LogFile -Value $Message break } "set2" { New-Variable -Name LogFile -Value $LogFile -Option ReadOnly -Visibility Public -Scope Global -force $currentScriptName = $myinvocation.ScriptName $currentUser = $ENV:USERDOMAIN + '\' + $ENV:USERNAME $currentComputer = $ENV:COMPUTERNAME $StartDate_str = Get-Date -UFormat "%Y-%m-%d %H:%M:%S" $WmiInfos = Get-WmiObject win32_operatingsystem $OSName = $WmiInfos.caption $OSSP = $WmiInfos.csdversion $OSArchi = $WmiInfos.OSArchitecture $Message = @" +----------------------------------------------------------------------------------------+ Script fullname : $currentScriptName When generated : $StartDate_str Current user : $currentUser Current computer : $currentComputer Operating System : $OSName $OSSP OS Architecture : $OSArchi +----------------------------------------------------------------------------------------+ "@ # Log file creation [VOID] (New-Item -ItemType File -Path $LogFile -Force) Add-Content -Path $LogFile -Value $Message break } "set3" { # Extracting start date from the file header [VOID]( (Get-Content $Global:logFile -TotalCount 3)[-1] -match '^When generated\s*: (?<date>\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2})$' ) if ($Matches.date -eq $null) { throw "Cannot get the start date from the header. Please check if the file header is correctly formatted." } $StartDate = [DateTime]$Matches.date $EndDate = Get-Date $EndDate_str = Get-Date $EndDate -UFormat "%Y-%m-%d %H:%M:%S" $duration_TotalSeconds = [int](New-TimeSpan -Start $StartDate -End $EndDate | Select-Object -ExpandProperty TotalSeconds) $duration_TotalMinutes = (New-TimeSpan -Start $StartDate -End $EndDate | Select-Object -ExpandProperty TotalMinutes) $duration_TotalMinutes = [MATH]::Round($duration_TotalMinutes, 2) $Message = @" +----------------------------------------------------------------------------------------+ End time : $EndDate_str Total duration (seconds) : $duration_TotalSeconds Total duration (minutes) : $duration_TotalMinutes +----------------------------------------------------------------------------------------+ "@ # Append the footer to the log file Add-Content -Path $Global:LogFile -Value $Message break } } # End switch if ($ToScreen) { Write-Host $Message -ForegroundColor $Color } } |