Public/Update-ServiceNowNumber.ps1
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Function Update-ServiceNowNumber { <# .SYNOPSIS Allows for the passing of a number, instead of a sys_id, and associated table to update a ServiceNow entry. .DESCRIPTION Allows for the passing of a number, instead of a sys_id, and associated table to update a ServiceNow entry. Output is suppressed and may be returned with a switch parameter. .EXAMPLE Update-ServiceNowNumber -Number $Number -Table $Table -Values @{property='value'} Updates a ticket number with a value providing no return output. .EXAMPLE Update-ServiceNowNumber -Number $Number -Table $Table -Values @{property='value'} -PassThru Updates a ticket number with a value providing return output. .NOTES #> [System.Diagnostics.CodeAnalysis.SuppressMessage('PSAvoidUsingConvertToSecureStringWithPlainText','')] [System.Diagnostics.CodeAnalysis.SuppressMessage('PSAvoidGlobalVars','')] [CmdletBinding(DefaultParameterSetName,SupportsShouldProcess=$true)] Param( # Object number [Parameter(Mandatory=$true)] [string]$Number, # Table containing the entry [Parameter(Mandatory=$true)] [string]$Table, # Credential used to authenticate to ServiceNow [Parameter(ParameterSetName='SpecifyConnectionFields', Mandatory=$true)] [ValidateNotNullOrEmpty()] [Alias('ServiceNowCredential')] [PSCredential]$Credential, # The URL for the ServiceNow instance being used [Parameter(ParameterSetName='SpecifyConnectionFields', Mandatory=$true)] [ValidateNotNullOrEmpty()] [string]$ServiceNowURL, # Azure Automation Connection object containing username, password, and URL for the ServiceNow instance [Parameter(ParameterSetName='UseConnectionObject', Mandatory=$true)] [ValidateNotNullOrEmpty()] [Hashtable]$Connection, # Hashtable of values to use as the record's properties [parameter(Mandatory=$false)] [hashtable]$Values, # Switch to allow the results to be passed back [parameter(Mandatory=$false)] [switch]$PassThru ) begin {} process { Try { # Prep a splat to use the provided number to find the sys_id $getServiceNowTableEntry = @{ Table = $Table MatchExact = @{number = $number} ErrorAction = 'Stop' } # Process credential steps based on parameter set name Switch ($PSCmdlet.ParameterSetName) { 'SpecifyConnectionFields' { $getServiceNowTableEntry.Add('ServiceNowCredential',$Credential) $getServiceNowTableEntry.Add('ServiceNowURL',$ServiceNowURL) $ServiceNowURL = 'https://' + $ServiceNowURL + '/api/now/v1' break } 'UseConnectionObject' { $getServiceNowTableEntry.Add('Connection',$Connection) $SecurePassword = ConvertTo-SecureString $Connection.Password -AsPlainText -Force $Credential = New-Object System.Management.Automation.PSCredential ($Connection.Username, $SecurePassword) $ServiceNowURL = 'https://' + $Connection.ServiceNowUri + '/api/now/v1' break } Default { If ((Test-ServiceNowAuthIsSet)) { $Credential = $Global:ServiceNowCredentials $ServiceNowURL = $Global:ServiceNowRESTURL } Else { Throw "Exception: You must do one of the following to authenticate: `n 1. Call the Set-ServiceNowAuth cmdlet `n 2. Pass in an Azure Automation connection object `n 3. Pass in an endpoint and credential" } } } # Use the number and table to determine the sys_id $SysID = Get-ServiceNowTableEntry @getServiceNowTableEntry | Select-Object -Expand sys_id # Convert the values to Json and encode them to an UTF8 array to support special chars $Body = $Values | ConvertTo-Json $utf8Bytes = [System.Text.Encoding]::Utf8.GetBytes($Body) # Setup splat $Uri = $ServiceNowURL + "/table/$Table/$SysID" $invokeRestMethodSplat = @{ Uri = $uri Method = 'Patch' Credential = $Credential Body = $utf8Bytes ContentType = 'application/json' } If ($PSCmdlet.ShouldProcess("$Table/$SysID",$MyInvocation.MyCommand)) { # Send REST call $Result = (Invoke-RestMethod @invokeRestMethodSplat).Result # Option to return results If ($PSBoundParameters.ContainsKey('Passthru')) { $Result } } } Catch { Write-Error $PSItem } } end {} } |