定期删除Azure存储账号下N天之前的数据文件-ASM

######RemoveStorageBlob*DaysOld#####
<#
.SYNOPSIS
   Remove all blob contents from one storage account that are * days old.
.DESCRIPTION
   This script will run through a single Azure storage account and delete all blob contents in
   all containers, which are * days old.

#>

workflow delblob-asm
{
       param(
                #设置Org ID
                [parameter(Mandatory=$true)]
                [String]$AzureOrgId="***",

                #设置Org ID的密码
                [Parameter(Mandatory = $true)]
                [String]$Password="***",

                #设置订阅名称
                [Parameter(Mandatory = $true)]
                [String]$AzureSubscriptionName="***",

                #设置存储账号
                [Parameter(Mandatory = $true)]
                [String]$StorageAccountName="***",

                #设置Container Name
                [Parameter(Mandatory = $true)]
                [String]$ContainerName="***",

                #设置过期时间
                [Parameter(Mandatory = $true)]
                [Int32]$DaysOld=10
    )

    $ChinaTimeZone = [System.TimeZoneInfo]::FindSystemTimeZoneByID("China Standard Time")
    $Start = [System.TimeZoneInfo]::ConvertTimefromUTC((get-date).ToUniversalTime(),$ChinaTimeZone)
    "Starting: " + $Start.ToString("HH:mm:ss.ffffzzz")

    $AzurePassword = $Password | ConvertTo-SecureString -AsPlainText -Force
    $AzureOrgIdCredential = New-Object System.Management.Automation.PSCredential($AzureOrgId,$AzurePassword)

    Add-AzureAccount -Credential $AzureOrgIdCredential -environment "AzureChinaCloud" | Write-Verbose

    Set-AzureSubscription -SubscriptionName $AzureSubscriptionName -CurrentStorageAccountName $StorageAccountName
    Select-AzureSubscription -SubscriptionName $AzureSubscriptionName

    # loop through each container and get list of blobs for each container and delete
    $blobsremoved = 0
    $containers = Get-AzureStorageContainer -Name $ContainerName -ErrorAction SilentlyContinue

    foreach($container in $containers)
    {
        $blobsremovedincontainer = 0
        Write-Output ("Searching Container: {0}" -f $container.Name)
        $blobs = Get-AzureStorageBlob -Container $container.Name 

        if ($blobs -ne $null)
        {
            foreach ($blob in $blobs)
            {
               $lastModified = $blob.LastModified
               if ($lastModified -ne $null)
               {
                   $blobDays = ([DateTime]::Now - [DateTime]$lastModified)
                   Write-Output ("Blob {0} in storage for {1} days" -f $blob.Name, $blobDays) 

                   if ($blobDays.Days -ge $DaysOld)
                   {
                        Write-Output ("Removing Blob: {0}" -f $blob.Name)
                        Remove-AzureStorageBlob -Blob $blob.Name -Container $container.Name
                        $blobsremoved += 1
                        $blobsremovedincontainer += 1
                   }
                }
            }
        }

        Write-Output ("{0} blobs removed from container {1}." -f $blobsremovedincontainer, $container.Name)
    }

    $ChinaTimeZone = [System.TimeZoneInfo]::FindSystemTimeZoneByID("China Standard Time")
    $Finish = [System.TimeZoneInfo]::ConvertTimefromUTC((get-date).ToUniversalTime(),$ChinaTimeZone)

    $TotalUsed = $Finish.Subtract($Start).TotalSeconds

    Write-Output ("Removed {0} blobs in {1} containers in storage account {2} of subscription {3} in {4} seconds." -f $blobsRemoved, $containersremoved, $StorageAccountName, $AzureConnectionName, $TotalUsed)
    "Finished " + $Finish.ToString("HH:mm:ss.ffffzzz")
}