remove-blob.ps1
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function Remove-Blob { <# .Synopsis Removes blobs of cloud data .Description Removes blobs of cloud data in Azure .Link Import-Blob .Link Export-Blob .Example Remove-Blob -Container MyContainer -Name MyItem.txt .Example Remove-Blob -Container MyContainer #> [CmdletBinding(DefaultParameterSetName='RemoveContainer',ConfirmImpact='High', SupportsShouldProcess=$true)] [OutputType([Nullable])] param( # The name of the container [Parameter(Mandatory=$true,Position=0, ValueFromPipelineByPropertyName=$true,ParameterSetName='RemoveContainer')] [Parameter(Mandatory=$true,Position=0,ValueFromPipelineByPropertyName=$true,ParameterSetName='RemoveBlob')] [string]$Container, # The name of the blob [Parameter(Mandatory=$true,Position=1,ValueFromPipelineByPropertyName=$true,ParameterSetName='RemoveBlob')] [string]$Name, # The storage account [string]$StorageAccount, # The storage key [string]$StorageKey ) begin { $signMessage = { param( [Hashtable]$Header, [Uri]$Url, [Uint32]$ContentLength, [string]$IfMatch ="", [string]$Md5OrContentType = "", [string]$NowString = [DateTime]::now.ToString("R", [Globalization.CultureInfo]::InvariantCulture), [Switch]$IsTableStorage, [string]$method = "GET", [string]$Storageaccount, [string]$StorageKey ) $method = $method.ToUpper() $MessageSignature = if ($IsTableStorage) { [String]::Format("{0}`n`n{1}`n{2}`n{3}",@( $method, "application/atom+xml", $NowString, ( & $GetCanonicalizedResource $Url $StorageAccount))) } else { if ($md5OrCOntentType) { [String]::Format("{0}`n`n`n{1}`n`n{5}`n`n`n{2}`n`n`n`n{3}{4}", @( $method, $(if ($method -eq "GET" -or $method -eq "HEAD") {[String]::Empty} else { $ContentLength }), $IfMatch, "$(& $GetCanonicalizedHeader $Header)", "$( & $GetCanonicalizedResource $Url $StorageAccount)", $Md5OrContentType )); } else { [String]::Format("{0}`n`n`n{1}`n{5}`n`n`n`n{2}`n`n`n`n{3}{4}", @( $method, $(if ($method -eq "GET" -or $method -eq "HEAD") {[String]::Empty} else { $ContentLength }), $IfMatch, "$(& $GetCanonicalizedHeader $Header)", "$( & $GetCanonicalizedResource $Url $StorageAccount)", $Md5OrContentType )); } } $SignatureBytes = [Text.Encoding]::UTF8.GetBytes($MessageSignature) [byte[]]$b64Arr = [Convert]::FromBase64String($StorageKey) $SHA256 = new-object Security.Cryptography.HMACSHA256 $sha256.Key = $b64Arr $AuthorizationHeader = "SharedKey " + $StorageAccount + ":" + [Convert]::ToBase64String($SHA256.ComputeHash($SignatureBytes)) $AuthorizationHeader } $GetCanonicalizedHeader = { param( [Hashtable]$Header ) $headerNameList = new-OBject Collections.ArrayList; $sb = new-object Text.StringBuilder; foreach ($headerName in $Header.Keys) { if ($headerName.ToLowerInvariant().StartsWith("x-ms-", [StringComparison]::Ordinal)) { $null = $headerNameList.Add($headerName.ToLowerInvariant()); } } $null = $headerNameList.Sort(); [Collections.Specialized.NameValueCollection]$headers =NEw-OBject Collections.Specialized.NameValueCollection foreach ($h in $header.Keys) { $null = $headers.Add($h, $header[$h]) } foreach ($headerName in $headerNameList) { $builder = new-Object Text.StringBuilder $headerName $separator = ":"; foreach ($headerValue in (& $GetHeaderValues $headers $headerName)) { $trimmedValue = $headerValue.Replace("`r`n", [String]::Empty) $null = $builder.Append($separator) $null = $builder.Append($trimmedValue) $separator = "," } $null = $sb.Append($builder.ToString()) $null = $sb.Append("`n") } return $sb.ToString() } $GetHeaderValues = { param([Collections.Specialized.NameValueCollection]$headers, $headerName) $list = new-OBject Collections.ArrayList $values = $headers.GetValues($headerName) if ($values -ne $null) { foreach ($str in $values) { $null = $list.Add($str.TrimStart($null)) } } return $list; } $GetCanonicalizedResource = { param([uri]$address, [string]$accountName) $str = New-object Text.StringBuilder $builder = New-object Text.StringBuilder "/" $null = $builder.Append($accountName) $null = $builder.Append($address.AbsolutePath) $null = $str.Append($builder.ToString()) $values2 = New-Object Collections.Specialized.NameValueCollection if (!$IsTableStorage) { $values = [Web.HttpUtility]::ParseQueryString($address.Query) foreach ($str2 in $values.Keys) { $list = New-Object Collections.ArrayList foreach ($v in $values.GetValues($str2)) { $null = $list.add($v) } $null = $list.Sort(); $builder2 = New-Object Text.StringBuilder foreach ($obj2 in $list) { if ($builder2.Length -gt 0) { $null = $builder2.Append(","); } $null = $builder2.Append($obj2.ToString()); } $valueName = if ($str2 -eq $null) { $str2 } else { $str2.ToLowerInvariant() } $values2.Add($valueName , $builder2.ToString()) } } $list2 = New-Object Collections.ArrayList foreach ($k in $values2.AllKeys) { $null = $list2.Add($k) } $null = $list2.Sort() foreach ($str3 in $list2) { $builder3 = New-Object Text.StringBuilder([string]::Empty); $null = $builder3.Append($str3); $null = $builder3.Append(":"); $null = $builder3.Append($values2[$str3]); $null = $str.Append("`n"); $null = $str.Append($builder3.ToString()); } return $str.ToString(); } } process { $in = $_ if ($in.Name) { $name = $in.Name } #region check for and cache the storage account if (-not $StorageAccount) { $storageAccount = $script:CachedStorageAccount } if (-not $StorageKey) { $StorageKey = $script:CachedStorageKey } if (-not $StorageAccount) { Write-Error "No storage account provided" return } if (-not $StorageKey) { Write-Error "No storage key provided" return } $script:CachedStorageAccount = $StorageAccount $script:CachedStorageKey = $StorageKey #endregion check for and cache the storage account if ($PSCmdlet.ParameterSetName -eq 'RemoveContainer' -and -not $in.Name) { $method = 'DELETE' $Container = "$Container".ToLower() $uri = "http://$StorageAccount.blob.core.windows.net/${Container}?restype=container" $header = @{ "x-ms-date" = $nowString "x-ms-version" = "2011-08-18" "DataServiceVersion" = "2.0;NetFx" "MaxDataServiceVersion" = "2.0;NetFx" } $header."x-ms-date" = [DateTime]::Now.ToUniversalTime().ToString("R", [Globalization.CultureInfo]::InvariantCulture) $nowString = $header.'x-ms-date' $header.authorization = . $signMessage -header $Header -url $Uri -nowstring $nowString -storageaccount $StorageAccount -storagekey $StorageKey -contentLength 0 -method DELETE if ($PSCmdlet.ShouldProcess("/$Container")) { $containerBlobList = Get-Web -UseWebRequest -Header $header -Url $Uri -Method $method -HideProgress } } elseif ($PSCmdlet.ParameterSetName -eq 'RemoveBlob' -or $in.Name) { $method = 'DELETE' $uri = "http://$StorageAccount.blob.core.windows.net/$Container/$Name" $header = @{ "x-ms-date" = $nowString "x-ms-version" = "2011-08-18" "DataServiceVersion" = "2.0;NetFx" "MaxDataServiceVersion" = "2.0;NetFx" } $header."x-ms-date" = [DateTime]::Now.ToUniversalTime().ToString("R", [Globalization.CultureInfo]::InvariantCulture) $nowString = $header.'x-ms-date' $header.authorization = . $signMessage -header $Header -url $Uri -nowstring $nowString -storageaccount $StorageAccount -storagekey $StorageKey -contentLength 0 -method DELETE if ($PSCmdlet.ShouldProcess("/$Container/$Name")) { $containerBlobList = Get-Web -UseWebRequest -Header $header -Url $Uri -Method $method -HideProgress } } } end { foreach ($inputInfo in $inputData) { if ($inputInfo.Name) { $Name = $inputInfo.Name } if ($inputInfo.Container) { $Container = $inputInfo.Container } $InputObject = $inputInfo.InputObject $containerBlobList = $null } } } |