(PowerShell) Upload using Azure Storage Account Shared Access Signature (SAS) Authorization

Sample code to upload binary bytes to a block blob in Azure Cloud Storage using an Azure Storage Account Shared Access Signature (SAS) Authorization. This creates a block blob, or replaces an existing block blob.

Note: The maximum size of a block blob created by uploading in a single step is 64MB. For larger files, the upload must be broken up into blocks. There is another Chilkat example for that..

Note: This example requires Chilkat v9.5.0.65 or later.

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Add-Type -Path "C:\chilkat\ChilkatDotNet47-9.5.0-x64\ChilkatDotNet47.dll"

# Note: This example requires Chilkat v9.5.0.65 or greater.

# Azure Blob Service Example: Upload binary bytes to a block blob.
# This uses a Shared Access Signature (SAS) for Authorization.
# This creates a new block blob or replaces an existing one in its entirety.
# See also: https://msdn.microsoft.com/en-us/library/azure/dd179451.aspx

# This example requires the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

$rest = New-Object Chilkat.Rest

# Connect to the Azure Storage Blob Service
$bTls = $true
$port = 443
$bAutoReconnect = $true
# In this example, the storage account name is "chilkat".
$success = $rest.Connect("chilkat.blob.core.windows.net",$port,$bTls,$bAutoReconnect)
if ($success -ne $true) {
    $($rest.LastErrorText)
    exit
}

# ----------------------------------------------------------------------------------------------
# The code above this comment could be placed inside a function/subroutine within the application
# because the connection does not need to be made for every request.  Once the connection is made
# the app may send many requests..
# ----------------------------------------------------------------------------------------------

# Note: The application does not need to explicitly set the following
# headers: Content-Length, x-ms-date, Authorization.  These headers
# are automatically set by Chilkat.

# Let's load a previously computed Azure Storage Account SAS token and use it.
# See How to Create an Azure Storage Account Shared Access Signature
$sbToken = New-Object Chilkat.StringBuilder
$success = $sbToken.LoadFile("qa_data/tokens/azureStorageAccountSas.txt","utf-8")
if ($success -ne $true) {
    $("Failed to load SAS token.")
    exit
}

# Add the Shared Access Signature query params for authorization.
$rest.AddQueryParams($sbToken.GetAsString())

# IMPORTANT: Make sure to set the x-ms-blob-type header:
$success = $rest.AddHeader("x-ms-blob-type","BlockBlob")

# IMPORTANT: Make sure to add the x-ms-date header.
# When the header name is "x-ms-date", Chilkat will recognize the keyword "NOW" 
# and will substitute the current system date/time formatted as required by Microsoft.
$success = $rest.AddHeader("x-ms-date","NOW")

# For this example, we'll just load a JPG file into memory..
$binData = New-Object Chilkat.BinData
$success = $binData.LoadFile("qa_data/jpg/starfish.jpg")
if ($success -ne $true) {
    $("Failed to load JPG file.")
    exit
}

# Note: The maximum size of a block blob created by uploading in a single step is 64MB.  
# For larger files, the upload must be broken up into blocks.  There is another Chilkat example for that..
$sbResponse = New-Object Chilkat.StringBuilder
$success = $rest.FullRequestBd("PUT","/mycontainer/starfish.jpg",$binData,$sbResponse)
if ($success -ne $true) {
    $($rest.LastErrorText)
    exit
}

# When successful, the Azure Storage service will respond with a 201 response status code,
# with no response body.
if ($rest.ResponseStatusCode -ne 201) {
    # Examine the request/response to see what happened.
    $("response status code = " + $rest.ResponseStatusCode)
    $("response status text = " + $rest.ResponseStatusText)
    $("response header: " + $rest.ResponseHeader)
    $("response body (if any): " + $sbResponse.GetAsString())
    $("---")
    $("LastRequestStartLine: " + $rest.LastRequestStartLine)
    $("LastRequestHeader: " + $rest.LastRequestHeader)
    $("Failed.")
    exit
}

$("Success.")