Get Azure Blob Storage container size without System.OutOfMemoryException

azure-blob-container-size.ps1

# this script will show how to get the total size of the blobs in a container
# before running this, you need to create a storage account, create a container,
#    and upload some blobs into the container 
# note: this retrieves all of the blobs in the container in one command 
#       if you are going to run this against a container with a lot of blobs
#       (more than a couple hundred), use continuation tokens to retrieve
#       the list of blobs. We will be adding a sample showing that scenario in the future.

# these are for the storage account to be used
param(
    [Parameter(Mandatory = $true)]
    [string]$resourceGroup,
 
    [Parameter(Mandatory = $true)]
    [string]$storageAccountName,
	
    [Parameter(Mandatory = $true)]
    [string]$containerName,
	
   # Numbers of blobs to be processed in a batch.
   [Parameter(Mandatory = $false)]
   [int]$BatchCount = 10000
)

# get a reference to the storage account and the context
$storageAccount = Get-AzureRmStorageAccount `
  -ResourceGroupName $resourceGroup `
  -Name $storageAccountName
$ctx = $storageAccount.Context 

# zero out our total
[long]$length = 0

$Token = $Null
[long]$blobCount = 0
do
{
    $Blobs = Get-AzureStorageBlob -Context $ctx -Container $ContainerName -MaxCount $BatchCount -ContinuationToken $Token
    $Blobs | ForEach-Object {$length = $length + $_.Length}

    $blobCount = $blobCount + $Blobs.Count
    $Token = $Blobs[$Blobs.Count - 1].ContinuationToken;
    Write-Host "Count = " $blobCount " Length = " $length
}
while ($Token -ne $Null)

Write-Host "Total Blob Count = " $blobCount
Write-Host "Total Length = " $length