(CkPython) Use an Azure Service SAS

Shows how to use an Azure Service SAS. (In this case, it is an SAS for a blob.)

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import sys
import chilkat

# Azure Blob Service Example: Upload binary bytes to a block blob.
# This uses a Service SAS for Authorization.

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

rest = chilkat.CkRest()

# 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 != True):
    print(rest.lastErrorText())
    sys.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 Service SAS
sbToken = chilkat.CkStringBuilder()
success = sbToken.LoadFile("qa_data/tokens/azureStorageServiceSas.txt","utf-8")
if (success != True):
    print("Failed to load SAS token.")
    sys.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 = chilkat.CkBinData()
success = binData.LoadFile("qa_data/jpg/starfish.jpg")
if (success != True):
    print("Failed to load JPG file.")
    sys.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 = chilkat.CkStringBuilder()
success = rest.FullRequestBd("PUT","/mycontainer/starfish.jpg",binData,sbResponse)
if (success != True):
    print(rest.lastErrorText())
    sys.exit()

# When successful, the Azure Storage service will respond with a 201 response status code,
# with no response body.
if (rest.get_ResponseStatusCode() != 201):
    # Examine the request/response to see what happened.
    print("response status code = " + str(rest.get_ResponseStatusCode()))
    print("response status text = " + rest.responseStatusText())
    print("response header: " + rest.responseHeader())
    print("response body (if any): " + sbResponse.getAsString())
    print("---")
    print("LastRequestStartLine: " + rest.lastRequestStartLine())
    print("LastRequestHeader: " + rest.lastRequestHeader())
    print("Failed.")
    sys.exit()

print("Success.")