POSH-Oceanstor

1.0.0

Public/Remove-DMLunGroupFromMappingView.ps1

<#
.SYNOPSIS
    Removes an OceanStor LUN group from a mapping view.
 
.DESCRIPTION
    Removes an existing LUN group association from an existing mapping view by resolving both objects by name.
    The cmdlet validates the mapping view, LUN group, and current association before calling the OceanStor API. It supports -WhatIf and -Confirm.
 
    Accepts multiple LUN groups from the pipeline by property name. Each is resolved and processed
    independently: a failure (e.g. an invalid/ambiguous name, or the group not being associated) is
    reported as a non-terminating error and does not stop the rest from being processed.
 
.PARAMETER WebSession
    Optional session object returned by Connect-deviceManager. When omitted, the module's cached $script:CurrentOceanstorSession session is used.
 
.PARAMETER MappingViewName
    Name of the mapping view from which the LUN group will be removed.
 
.PARAMETER LunGroupName
    Name of the LUN group to remove from the mapping view.
 
.PARAMETER VstoreId
    Optional vStore ID used to scope the association operation.
 
.INPUTS
    System.Management.Automation.PSCustomObject
 
.OUTPUTS
    System.Management.Automation.PSCustomObject
    Returns the OceanStor API error object.
 
.EXAMPLE
    PS> Remove-DMLunGroupFromMappingView -MappingViewName 'mv-prod' -LunGroupName 'production-luns' -WhatIf
 
    Shows what would happen if the production-luns LUN group were removed from mv-prod.
 
.NOTES
    Filename: Remove-DMLunGroupFromMappingView.ps1
#>
function Remove-DMLunGroupFromMappingView {
    [Diagnostics.CodeAnalysis.SuppressMessageAttribute('PSReviewUnusedParameter', '')]

    [CmdletBinding(SupportsShouldProcess = $true, ConfirmImpact = 'High')]
    param(
        [Parameter(ValueFromPipelineByPropertyName = $true)]
        [pscustomobject]$WebSession,

        [Parameter(Mandatory = $true, Position = 0, ValueFromPipelineByPropertyName = $true)]
        [Alias('Name')]
        [ValidateNotNullOrEmpty()]
        [ArgumentCompleter({
                param($commandName, $parameterName, $wordToComplete, $commandAst, $fakeBoundParameters)
                $session = if ($fakeBoundParameters.ContainsKey('WebSession')) {
                    $fakeBoundParameters.WebSession
                }
                else {
                    $script:CurrentOceanstorSession
                }
                (Get-DMlunGroup -WebSession $session).Name | Sort-Object -Unique | Where-Object { $_ -like "$wordToComplete*" }
            })]
        [string]$LunGroupName,

        [Parameter(Mandatory = $true, Position = 1)]
        [ValidateNotNullOrEmpty()]
        [ArgumentCompleter({
                param($commandName, $parameterName, $wordToComplete, $commandAst, $fakeBoundParameters)
                $session = if ($fakeBoundParameters.ContainsKey('WebSession')) {
                    $fakeBoundParameters.WebSession
                }
                else {
                    $script:CurrentOceanstorSession
                }
                (Get-DMMappingView -WebSession $session).Name | Sort-Object -Unique | Where-Object { $_ -like "$wordToComplete*" }
            })]
        [string]$MappingViewName,

        [string]$VstoreId
    )

    process {
        try {
            $session = if ($WebSession) {
                $WebSession
            }
            else {
                $script:CurrentOceanstorSession
            }

            $groups = @(Get-DMlunGroup -WebSession $session)
            $matchingGroups = @($groups | Where-Object Name -EQ $LunGroupName)
            if ($matchingGroups.Count -eq 0) {
                throw "Invalid LunGroupName. Valid values are: $($groups.Name -join ', ')"
            }
            if ($matchingGroups.Count -gt 1) {
                throw "LunGroupName is ambiguous because more than one LUN group is named '$LunGroupName'."
            }
            $group = $matchingGroups[0]

            $views = @(Get-DMMappingView -WebSession $session)
            $matchingViews = @($views | Where-Object Name -EQ $MappingViewName)
            if ($matchingViews.Count -eq 0) {
                throw "Invalid MappingViewName. Valid values are: $($views.Name -join ', ')"
            }
            if ($matchingViews.Count -gt 1) {
                throw "MappingViewName is ambiguous because more than one mapping view is named '$MappingViewName'."
            }
            $view = $matchingViews[0]

            $associations = @(Get-DMMappingView -WebSession $session -LunGroupName $LunGroupName -VstoreId $VstoreId)
            if ($associations.Id -notcontains $view.Id) {
                throw "LUN group '$LunGroupName' is not associated with mapping view '$MappingViewName'."
            }

            $body = @{ TYPE = 245; ID = $view.Id; ASSOCIATEOBJTYPE = 256; ASSOCIATEOBJID = $group.Id }
            if ($VstoreId) {
                $body.vstoreId = $VstoreId
            }

            if ($PSCmdlet.ShouldProcess("$LunGroupName <- $MappingViewName", 'Remove LUN group from mapping view')) {
                $response = Invoke-DeviceManager -WebSession $session -Method 'PUT' -Resource 'mappingview/REMOVE_ASSOCIATE' -BodyData $body
                $response = $response | Assert-DMApiSuccess
                return $response.error
            }
        }
        catch {
            $PSCmdlet.WriteError($_)
        }
    }
}