Blobcache text file

# from http://blogs.technet.com/b/heyscriptingguy/archive/2010/09/14/use-powershell-to-script-changes-to-the-sharepoint-web-config-file.aspx


function Enable-SPBlobCache {

param(

    [Parameter(Mandatory=$true, ValueFromPipeline=$true, Position=0)]
    [Microsoft.SharePoint.PowerShell.SPWebApplicationPipeBind]
    $WebApplication
)

 process {

  $WebApp = $WebApplication.Read()
  # SPWebConfigModification to enable BlobCache
  $configMod1 = New-Object Microsoft.SharePoint.Administration.SPWebConfigModification
  $configMod1.Path = "configuration/SharePoint/BlobCache" 
  $configMod1.Name = "enabled" 
  $configMod1.Sequence = 0
  $configMod1.Owner = "BlobCacheMod" 
  ## SPWebConfigModificationType.EnsureChildNode -> 0
  ## SPWebConfigModificationType.EnsureAttribute -> 1
  ## SPWebConfigModificationType.EnsureSection -> 2
  $configMod1.Type = 1
  $configMod1.Value = "true" 

  # SPWebConfigModification to enable client-side Blob caching (max-age)
  $configMod2 = New-Object Microsoft.SharePoint.Administration.SPWebConfigModification
  $configMod2.Path = "configuration/SharePoint/BlobCache" 
  $configMod2.Name = "max-age" 
  $configMod2.Sequence = 0
  $configMod2.Owner = "BlobCacheMod" 

  ## SPWebConfigModificationType.EnsureChildNode -> 0
  ## SPWebConfigModificationType.EnsureAttribute -> 1
  ## SPWebConfigModificationType.EnsureSection -> 2

  $configMod2.Type = 1
  $configMod2.Value = "86400" 


  # SPWebConfigurationModification to move blobstore location
  $configMod3 = New-Object Microsoft.SharePoint.Administration.SPWebConfigModification
  $configMod3.Path = "configuration/SharePoint/BlobCache"   
  $configMod3.Name = "location"
  $configMod3.Sequence = 0
  $configMod3.Owner = "BlobCacheMod" 
  $configMod3.Type = 1
  $configMod3.Value = "C:\Blobcache2\14"  



  # Add mods, update, and apply

  $WebApp.WebConfigModifications.Add( $configMod1 )
  $WebApp.WebConfigModifications.Add( $configMod2 )
  $WebApp.WebConfigModifications.Add( $configMod3 )
  $WebApp.Update()
  $WebApp.Parent.ApplyWebConfigModifications()

 }


} 


function Disable-SPBlobCache {

 param(

  [Parameter(Mandatory=$true, ValueFromPipeline=$true, Position=0)]
  [Microsoft.SharePoint.PowerShell.SPWebApplicationPipeBind]
  $WebApplication

 )

  process {
   $WebApp = $WebApplication.Read()
   $mods = @()
   foreach ( $mod in $WebApp.WebConfigModifications ) {
    if ( $mod.Owner -eq "BlobCacheMod" ) {
     $mods += $mod
    }
  }

   foreach ( $mod in $mods ) {
    [void] $WebApp.WebConfigModifications.Remove( $mod )
   }

   $WebApp.Update()
   $WebApp.Parent.ApplyWebConfigModifications()
  }

}