Public/Get-UnityFastCache.ps1

Function Get-UnityFastCache {

  <#
      .SYNOPSIS
      View the FAST Cache parameters.
      .DESCRIPTION
      View the FAST Cache parameters.
      Physical deployments only.
      You need to have an active session with the array.
      .NOTES
      Written by Erwan Quelin under MIT licence - https://github.com/equelin/Unity-Powershell/blob/master/LICENSE
      .LINK
      https://github.com/equelin/Unity-Powershell
      .PARAMETER Session
      Specifies an UnitySession Object.
      .PARAMETER ID
      Specifies the object ID.
      .EXAMPLE
      Get-UnityFastCache

      Retrieve information about Fast Cache.
      .EXAMPLE
      Get-UnityFastCache -Name '200 GB SAS Flash 2'

      Retrieves information about disk groups names '200 GB SAS Flash 2'
  #>


  [CmdletBinding(DefaultParameterSetName="ByID")]
  Param (
    [Parameter(Mandatory = $false,HelpMessage = 'EMC Unity Session')]
    $session = ($global:DefaultUnitySession | where-object {$_.IsConnected -eq $true}),
    [Parameter(Mandatory = $false,ParameterSetName="ByID",ValueFromPipeline=$True,ValueFromPipelinebyPropertyName=$True,HelpMessage = 'Fast Cache ID')]
    [String[]]$ID='*'
  )

  Begin {
    Write-Verbose "Executing function: $($MyInvocation.MyCommand)"

    #Initialazing variables
    $ResultCollection = @()
    $URI = '/api/types/fastCache/instances' #URI
    $TypeName = 'UnityFastCache'
  }

  Process {
    Foreach ($sess in $session) {

      Write-Verbose "Processing Session: $($sess.Server) with SessionId: $($sess.SessionId)"

      # Test if the Unity is a virtual appliance
      If ($Sess.isUnityVSA()) {
        Write-Warning -Message "This functionnality is not supported on the Unity VSA ($($Sess.Name))"
      } else {

        If ($Sess.TestConnection()) {

          #Building the URL from Object Type.
          $URL = Get-URLFromObjectType -Server $sess.Server -URI $URI -TypeName $TypeName -Compact

          Write-Verbose "URL: $URL"

          #Sending the request
          $request = Send-UnityRequest -uri $URL -Session $Sess -Method 'GET'

          #Formating the result. Converting it from JSON to a Powershell object
          $Results = ($request.content | ConvertFrom-Json).entries.content

          #Building the result collection (Add ressource type)
          If ($Results) {

            $ResultsFiltered = @()
            
            # Results filtering
            Switch ($PsCmdlet.ParameterSetName) {
              'ByID' {
                $ResultsFiltered += Find-FromFilter -Parameter 'ID' -Filter $ID -Data $Results
              }
            }

            If ($ResultsFiltered) {
              
              $ResultCollection = ConvertTo-Hashtable -Data $ResultsFiltered

              Foreach ($Result in $ResultCollection) {

                # Instantiate object
                $Object = New-Object -TypeName $TypeName -Property $Result

                # Output results
                $Object
              } # End Foreach ($Result in $ResultCollection)
            } # End If ($ResultsFiltered)
          } # End If ($Results)
        } # End If ($Sess.TestConnection())
      } #End If ($Sess.isUnityVSA())
    } # End Foreach ($sess in $session)
  } # End Process
} # End Function