Private/Get-AtwsData.ps1
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<# .COPYRIGHT Copyright (c) Office Center H�nefoss AS. All rights reserved. Licensed under the MIT license. See https://github.com/ecitsolutions/Autotask/blob/master/LICENSE.md for license information. #> Function Get-AtwsData { <# .SYNOPSIS This function queries the Autotask Web API for entities matching a specified type and filter. .DESCRIPTION This function queries the Autotask Web API for entities matching a specified type and filter. Valid operators: -and, -or Valid comparison operators: -eq, -ne, -lt, -le, -gt, -ge, -isnull, -isnotnull, -isthisday Valid text comparison operators: -contains, -like, -notlike, -beginswith, -endswith, -soundslike Special operators to nest conditions: -begin, -end .INPUTS Nothing. .OUTPUTS Autotask.Entity[]. One or more Autotask entities returned from Autotask Web API. .EXAMPLE Get-AtwsData -Entity Ticket -Filter {id -gt 0} Gets all tickets with an id greater than 0 from Autotask Web API .NOTES NAME: Get-AtwsData .LINK Set-AtwsData New-AtwsData Remove-AtwsData #> [cmdletbinding()] [OutputType([PSObject[]])] param ( [Parameter( Mandatory = $true, Position = 0 )] [string] $Entity, [Parameter( Mandatory = $true, ValueFromRemainingArguments = $true, Position = 1 )] [string[]] $Filter, [string] $GetReferenceEntityById, [string] $GetExternalEntityByThisEntityId, [switch] $NoPickListLabel ) begin { # Enable modern -Debug behavior if ($PSCmdlet.MyInvocation.BoundParameters['Debug'].IsPresent) { $DebugPreference = 'Continue' } Write-Debug ('{0}: Begin of function' -F $MyInvocation.MyCommand.Name) if (-not($Script:Atws.integrationsValue)) { Throw [ApplicationException] 'Not connected to Autotask WebAPI. Re-import module with valid credentials.' } $result = @() } process { # $Filter is usually passed as a flat string. Make sure it is formatted properly if ($Filter.Count -eq 1 -and $Filter -match ' ' ) { $Filter = . Update-AtwsFilter -Filterstring $Filter } # Squash into a flat array with entity first [Array]$Query = @($Entity) + $Filter Write-Verbose ('{0}: Converting query string into QueryXml. string as array looks like: {1}' -F $MyInvocation.MyCommand.Name, $($Query -join ', ')) [xml]$QueryXml = ConvertTo-QueryXML @Query Write-Debug ('{0}: QueryXml looks like: {1}' -F $MyInvocation.MyCommand.Name, $QueryXml.InnerXml.Tostring()) Write-Verbose ('{0}: Adding looping construct to query to handle more than 500 results.' -F $MyInvocation.MyCommand.Name) # Native XML is rather tedious... $field = $QueryXml.CreateElement('field') $expression = $QueryXml.CreateElement('expression') $expression.SetAttribute('op', 'greaterthan') $expression.InnerText = 0 $field.InnerText = 'id' [void]$field.AppendChild($expression) $FirstPass = $true Do { Write-Verbose ('{0}: Passing QueryXML to Autotask API' -F $MyInvocation.MyCommand.Name) # Get the first batch - the API returns max 500 items $lastquery = $Script:Atws.query($Script:Atws.IntegrationsValue, $QueryXml.InnerXml) # Handle any errors if ($lastquery.Errors.Count -gt 0) { foreach ($atwsError in $lastquery.Errors) { Write-Error $atwsError.Message } return } # Add all returned objects to the Result - if any if ($lastquery.EntityResults.Count -gt 0) { $result += ConvertTo-LocalObject -InputObject $lastquery.EntityResults } # Results are sorted by object Id. The Id of the last object is the highest object id in the result $upperBound = $lastquery.EntityResults[$lastquery.EntityResults.GetUpperBound(0)].id # Add the higest Id (so far) to the id -gt ? condition $expression.InnerText = $upperBound # If this is the first pass we append the expression to the query if ($FirstPass) { # Insert looping construct into query [void]$QueryXml.queryxml.query.AppendChild($field) $FirstPass = $false } } # The last query we have to make will have between 0 and 499 items Until ($lastquery.EntityResults.Count -lt 500) } end { # Some last minute changes if ($result) { # Should we return an indirect object? if ($GetReferenceEntityById) { Write-Verbose ('{0}: User has asked for external reference objects by {1}' -F $MyInvocation.MyCommand.Name, $GetReferenceEntityById) $fields = Get-AtwsFieldInfo -Entity $result[0].GetType().Name $field = $fields.Where( { $_.Name -eq $GetReferenceEntityById }) $resultValues = $result | Where-Object { $null -ne $_.$GetReferenceEntityById } if ($resultValues.Count -lt $result.Count) { Write-Warning ('{0}: Only {1} of the {2}s in the primary query had a value in the property {3}.' -F $MyInvocation.MyCommand.Name, $resultValues.Count, $Entity, $GetReferenceEntityById) -WarningAction Continue } $Filter = 'id -eq {0}' -F $($resultValues.$GetReferenceEntityById -join ' -or id -eq ') $result = Get-Atwsdata -Entity $field.ReferenceEntityType -Filter $Filter } elseif ($GetExternalEntityByThisEntityId) { Write-Verbose ('{0}: User has asked for {1} that are referencing this result' -F $MyInvocation.MyCommand.Name, $GetExternalEntityByThisEntityId) $ReferenceInfo = $GetExternalEntityByThisEntityId -Split ':' $Filter = '{0} -eq {1}' -F $ReferenceInfo[1], $($result.id -join (' -or {0}id -eq ' -F $ReferenceInfo[1])) $result = Get-Atwsdata -Entity $ReferenceInfo[0] -Filter $Filter } Write-Debug ('{0}: End of function' -F $MyInvocation.MyCommand.Name) Return $result } } } |