src/cmdlets/Get-GraphChildItem.ps1
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# Copyright 2018, Adam Edwards # # 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. . (import-script Invoke-GraphRequest) . (import-script Get-GraphUri) . (import-script ../common/PreferenceHelper) . (import-script ../common/GraphAccessDeniedException) . (import-script common/ItemResultHelper) function Get-GraphChildItem { [cmdletbinding(positionalbinding=$false, supportspaging=$true, supportsshouldprocess=$true)] param( [parameter(position=0)] [Uri[]] $ItemRelativeUri = @('.'), [parameter(position=1)] [String] $Query = $null, [String] $ODataFilter = $null, [String[]] $Select = $null, [String[]] $Expand = $null, [Alias('Sort')] $OrderBy = $null, [Switch] $Descending, [parameter(parametersetname='MSGraphNewConnection')] [String[]] $ScopeNames = $null, [Object] $ContentColumns = $null, [String] $Version = $null, [switch] $RawContent, [switch] $AbsoluteUri, [switch] $IncludeAll, [switch] $DetailedChildren, [switch] $DataOnly, [Switch] $RequireMetadata, [HashTable] $Headers = $null, [parameter(parametersetname='MSGraphNewConnection')] [GraphCloud] $Cloud = [GraphCloud]::Public, [parameter(parametersetname='ExistingConnection', mandatory=$true)] [PSCustomObject] $Connection = $null, [string] $ResultVariable = $null ) if ( $Version -or $Connection -or ($Cloud -ne ([GraphCloud]::Public)) ) { throw [NotImplementedException]::new("Non-default context not yet implemented") } $context = $null $mustWaitForMissingMetadata = $RequireMetadata.IsPresent -or (__Preference__MustWaitForMetadata) $assumeRoot = $false $resolvedUri = if ( $ItemRelativeUri[0] -ne '.' ) { $metadataArgument = @{IgnoreMissingMetadata=(new-object System.Management.Automation.SwitchParameter (! $mustWaitForMissingMetadata))} Get-GraphUri $ItemRelativeUri[0] @metadataArgument } else { $context = $::.GraphContext |=> GetCurrent $parser = new-so SegmentParser $context $null $true $contextReady = ($::.GraphContext |=> GetMetadataStatus $context) -eq [MetadataStatus]::Ready if ( ! $contextReady -and ! $mustWaitForMissingMetadata ) { $assumeRoot = $true $::.SegmentHelper |=> ToPublicSegment $parser $::.GraphSegment.RootSegment } else { $::.SegmentHelper |=> ToPublicSegment $parser $context.location } } if ( ! $context ) { $components = $resolvedUri.Path -split ':' if ( $components.length -gt 2) { throw "'$($resolvedUri.Path)' is not a valid graph location uri" } $context = $::.logicalgraphmanager.Get().contexts[$components[0]].context } $results = @() $requestArguments = @{ RelativeUri=$ItemRelativeUri[0] Query = $Query ODataFilter = $ODataFilter Select = $Select Expand = $Expand OrderBy = $OrderBy Descending = $Descending Version=$Version RawContent=$RawContent AbsoluteUri=$AbsoluteUri Headers=$Headers First=$pscmdlet.pagingparameters.first Skip=$pscmdlet.pagingparameters.skip IncludeTotalCount=$pscmdlet.pagingparameters.includetotalcount } if ($ScopeNames -ne $null) { $requestArguments['ScopeNames'] = $ScopeNames } if ( $Connection -ne $null ) { $requestArguments['Connection'] = $Connection } $graphException = $false $ignoreMetadata = ! $mustWaitForMissingMetadata -and ( ($resolvedUri.Class -eq 'Null') -or $assumeRoot ) if ( $resolvedUri.Class -eq '__Root' ) { $results += $resolvedUri } elseif ( $::.SegmentHelper.IsValidLocationClass($resolvedUri.Class) -or $ignoreMetadata ) { try { Invoke-GraphRequest @requestArguments | foreach { $result = if ( ! $ignoreMetadata -and (! $RawContent.ispresent -and (! $resolvedUri.Collection -or $DetailedChildren.IsPresent) ) ) { $_ | Get-GraphUri } else { $::.SegmentHelper.ToPublicSegmentFromGraphItem($resolvedUri, $_) } $translatedResult = if ( ! $RawContent.IsPresent -and $ContentColumns ) { $ContentColumns | foreach { $specificOutputColumn = $false $outputColumnName = $_ $contentColumnName = if ( $_ -is [String] ) { $_ } elseif ( $_ -is [HashTable] ) { if ( $_.count -ne 1 ) { throw "Argument '$($_)' must have exactly one key, specify '@{source1=dest1}, @{source2=dest2}' instead" } $specificOutputColumn = $true $outputColumnName = $_.values[0] $_.keys[0] } else { throw "Invalid Content column '$($_.tostring())' of type '$($_.gettype())' specified -- only types [String] and [HashTable] are permitted" } $propertyName = if ( $specificOutputColumn ) { $outputColumnName } else { if ( $result | gm $outputColumnName -erroraction silentlycontinue ) { "_$outputColumnName" } else { $outputColumnName } } $result | add-member -membertype noteproperty -name $propertyName -value ($result.content | select -erroraction silentlycontinue -expandproperty $contentColumnName) } } $results += $result } } catch [GraphAccessDeniedException] { # In some cases, we want to allow the user to make a mistake that results in an error from Graph # but allows the cmdlet to continue to enumerate child segments known from local metadata. For # example, the application may not have the scopes to perform a GET on some URI which means Graph # has to return a 4xx, but its still valid to enumerate children since the question of what # segments may follow a given segment is not affected by scope. Without this accommodation, # exploration of the Graph with this cmdlet would be tricky as you'd need to have every possible # scope to avoid hitting blocking errors. It's quite possible that you *can't* get all the scopes # anyway (you may need admin approval), but you should still be able to see what's possible, especially # since that question is one this cmdlet can answer. :) $graphException = $true $_.exception | write-verbose write-warning $_.exception.message $lastError = get-grapherror if ($lastError -and ($lastError | gm ResponseStream -erroraction silentlycontinue)) { $lastError.ResponseStream | write-warning } } } if ( $ignoreMetadata ) { write-warning "Metadata processing for Graph is in progress -- responses from Graph will be returned but no metadata will be added. You can retry this cmdlet later or retry it now with the '-RequireMetadata' option to force a wait until processing is complete in order to obtain the complete response." } if ( ! $DataOnly.ispresent ) { if ( ! $ignoreMetadata -and ($graphException -or ! $resolvedUri.Collection) ) { Get-GraphUri $ItemRelativeUri[0] -children -locatablechildren:(!$IncludeAll.IsPresent) | foreach { $results += $_ } } __AutoConfigurePrompt $context } $targetResultVariable = __GetResultVariable $ResultVariable $targetResultVariable.value = $results $results } |