Public/New-ServiceNowChangeRequest.ps1
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function New-ServiceNowChangeRequest { <# .SYNOPSIS Generates a new ServiceNow change request .DESCRIPTION Generates a new ServiceNow change request using predefined or custom fields by invoking the ServiceNow API .PARAMETER Caller sys_id of the caller of the change request (user Get-ServiceNowUser to retrieve this) .PARAMETER ShortDescription Short description of the change request .PARAMETER Description Long description of the change request .PARAMETER AssignmentGroup sys_id of the assignment group (use Get-ServiceNowUserGroup to retrieve this) .PARAMETER Comment Comment to include in the ticket .PARAMETER Category Category of the change request (e.g. 'Network') .PARAMETER Subcategory Subcategory of the change request (e.g. 'Network') .PARAMETER ConfigurationItem sys_id of the configuration item of the change request .PARAMETER CustomFields Custom fields as hashtable .PARAMETER ServiceNowCredential Credential used to authenticate to ServiceNow .PARAMETER ServiceNowURL The URL for the ServiceNow instance being used (eg: instancename.service-now.com) .PARAMETER Connection Azure Automation Connection object containing username, password, and URL for the ServiceNow instance .PARAMETER PassThru Returns the ticket values after creation .LINK https://github.com/Snow-Shell/servicenow-powershell .EXAMPLE Generate a basic change request attributed to the caller "UserName" with descriptions, categories, assignment groups and CMDB items set. New-ServiceNowchange request -Caller UserName -ShortDescription 'New PS change request' -Description 'This change request was created from Powershell' -AssignmentGroup ServiceDesk -Comment 'Inline Comment' -Category Office -Subcategory Outlook -ConfigurationItem UserPC1 .EXAMPLE Generate an Change Request by 'splatting' all fields used in the 1st example plus some additional custom ServiceNow fields (These must exist in your ServiceNow instance), This example uses the caller's sys_id value for identification. $newServiceNowChangeRequestSplat = @{ Caller = '55ccf91161924edc979d8e7e5627a47d' ShortDescription = 'New PS Change Request' Description = 'This change request was created from Powershell' AssignmentGroup = 'ServiceDesk' Comment = 'Inline Comment' Category = 'Office' Subcategory = 'Outlook' ConfigurationItem = 'UserPC1' CustomFields = @{ u_custom1 = 'Custom Field Entry' u_another_custom = 'Related Test' } } New-ServiceNowChangeRequest @newServiceNowChangeRequestSplat #> [CmdletBinding(DefaultParameterSetName = 'Session', SupportsShouldProcess)] Param( [parameter(Mandatory)] [string]$Caller, [parameter(Mandatory)] [string]$ShortDescription, [parameter()] [string]$Description, [parameter()] [string]$AssignmentGroup, [parameter()] [string]$Comment, [parameter()] [string]$Category, [parameter()] [string]$Subcategory, [parameter()] [string]$ConfigurationItem, [parameter()] [hashtable]$CustomFields, [Parameter(ParameterSetName = 'SpecifyConnectionFields', Mandatory)] [ValidateNotNullOrEmpty()] [PSCredential]$ServiceNowCredential, [Parameter(ParameterSetName = 'SpecifyConnectionFields', Mandatory)] [ValidateNotNullOrEmpty()] [string]$ServiceNowURL, [Parameter(ParameterSetName = 'UseConnectionObject', Mandatory)] [ValidateNotNullOrEmpty()] [Hashtable]$Connection, [Parameter(ParameterSetName = 'Session')] [ValidateNotNullOrEmpty()] [hashtable] $ServiceNowSession = $script:ServiceNowSession, [Parameter()] [switch] $PassThru ) begin {} process { # Create a hash table of any defined parameters (not CustomFields) that have values $DefinedChangeRequestParameters = @('AssignmentGroup', 'Caller', 'Category', 'Comment', 'ConfigurationItem', 'Description', 'ShortDescription', 'Subcategory') $TableEntryValues = @{ } ForEach ($Parameter in $DefinedChangeRequestParameters) { If ($null -ne $PSBoundParameters.$Parameter) { # Turn the defined parameter name into the ServiceNow attribute name $KeyToAdd = Switch ($Parameter) { AssignmentGroup { 'assignment_group'; break } Caller { 'caller_id'; break } Category { 'category'; break } Comment { 'comments'; break } ConfigurationItem { 'cmdb_ci'; break } Description { 'description'; break } ShortDescription { 'short_description'; break } Subcategory { 'subcategory'; break } } $TableEntryValues.Add($KeyToAdd, $PSBoundParameters.$Parameter) } } # Add CustomFields hash pairs to the Table Entry Values hash table If ($null -ne $PSBoundParameters.CustomFields) { $DuplicateTableEntryValues = ForEach ($Key in $CustomFields.Keys) { If (($TableEntryValues.ContainsKey($Key) -eq $False)) { # Add the unique entry to the table entry values hash table $TableEntryValues.Add($Key, $CustomFields[$Key]) } Else { # Capture the duplicate key name $Key } } } # Throw an error if duplicate fields were provided If ($null -ne $DuplicateTableEntryValues) { $DuplicateKeyList = $DuplicateTableEntryValues -join "," Throw "Ticket fields may only be used once: $DuplicateKeyList" } # Table Entry Splat $params = @{ Method = 'Post' Table = 'change_request' Values = $TableEntryValues Connection = $Connection Credential = $Credential ServiceNowUrl = $ServiceNowURL ServiceNowSession = $ServiceNowSession } If ( $PSCmdlet.ShouldProcess($ShortDescription, 'Create new change request') ) { $response = Invoke-ServiceNowRestMethod @params If ($PassThru.IsPresent) { $response } } } end {} } |