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 Apache 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=$True,HelpMessage = 'LUN ID')]
    [String[]]$ID='*'
  )

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

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

    Foreach ($sess in $session) {

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

      If (Test-UnityConnection -Session $Sess) {

        #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) {
          $ResultCollection += Add-UnityObjectType -Data $results -TypeName $TypeName
        }
      } else {
        Write-Host "You are no longer connected to EMC Unity array: $($Sess.Server)"
      }
    }
  }

  Process {
    #Filter results
    If ($ResultCollection) {
      Switch ($PsCmdlet.ParameterSetName) {
        'ByID' {
          Foreach ($I in $ID) {
            Write-Verbose "Return result(s) with the filter: $($I)"
            Write-Output $ResultCollection | Where-Object {$_.Id -like $I}
          }
        }
      }
    }
  }

  End {}
}