(Chilkat2-Python) Azure File Service: Upload File

Sample code to upload a file to a directory in a share in the Azure File Service. A file is uploaded by first creating the file in the Azure share and then writes a range of bytes to the file. Azure imposes a 4MB limit for each PUT to write a range. Files larger than 4MB need to be uploaded by making multiple "Put Range" calls. This example uploads a file small enough for a single "Put Range" call.

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import sys
import chilkat2

# Azure File Service Example: Upload a file.  
# See:  https://docs.microsoft.com/en-us/rest/api/storageservices/create-share
# also see: https://docs.microsoft.com/en-us/rest/api/storageservices/put-range

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

rest = chilkat2.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.file.core.windows.net",port,bTls,bAutoReconnect)
if (success != True):
    print(rest.LastErrorText)
    sys.exit()

# This example will upload a relatively small file (760K), so it may as well 
# just be load it into memory..
jpgData = chilkat2.BinData()
jpgData.LoadFile("qa_data/jpg/penguins.jpg")

# Provide Azure Cloud credentials for the REST calls.
azAuth = chilkat2.AuthAzureStorage()
azAuth.AccessKey = "AZURE_ACCESS_KEY"
# The account name used here should match the 1st part of the domain passed in the call to Connect (above).
azAuth.Account = "chilkat"
azAuth.Scheme = "SharedKey"
azAuth.Service = "File"
# This causes the "x-ms-version: 2021-08-06" header to be automatically added.
azAuth.XMsVersion = "2021-08-06"
success = rest.SetAuthAzureStorage(azAuth)

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

# However, a few additional headers are required for the "Create File" operation:
rest.AddHeader("x-ms-type","file")

# This required header specifies the final size of the file (or the maximum size it can be).
sbFileSize = chilkat2.StringBuilder()
sbFileSize.AppendInt(jpgData.NumBytes)
rest.AddHeader("x-ms-content-length",sbFileSize.GetAsString())

# Send a PUT request to create the file (or replace the file if it already exists).
# This will initialize the file in the Azure file storage.  To upload content, we'll need
# to do the "Put Range" operation one or more times.

# The following will create the file "penguins.jpg" in the share "pip", in the directory "/wildlife/antarctic"
responseStr = rest.FullRequestNoBody("PUT","/pip/wildlife/antarctic/penguins.jpg")
if (rest.LastMethodSuccess != True):
    print(rest.LastErrorText)
    sys.exit()

# When successful, the Azure File Service will respond with a 201 (Created) response status code,
# with no XML response body.  If an error response is returned, there will be an XML response body.

if (rest.ResponseStatusCode != 201):
    # Examine the request/response to see what happened.
    print("response status code = " + str(rest.ResponseStatusCode))
    print("response status text = " + rest.ResponseStatusText)
    print("response header: " + rest.ResponseHeader)
    print("response body (if any): " + responseStr)
    print("---")
    print("LastRequestStartLine: " + rest.LastRequestStartLine)
    print("LastRequestHeader: " + rest.LastRequestHeader)
    sys.exit()

print("Successfully created penguins.jpg")

# --------------------------------------------------------------------------------
# Upload the file data...

# Make sure the headers from the "Create File" operation are removed.
rest.ClearAllHeaders()

# The only tricky part here is to correctly add the x-ms-range header.
# It will be formatted like this:
# x-ms-range: bytes=0-759623

sbRange = chilkat2.StringBuilder()
sbRange.Append("bytes=0-")
sbRange.AppendInt(jpgData.NumBytes - 1)

rest.AddHeader("x-ms-range",sbRange.GetAsString())

# The x-ms-write header is also required:
rest.AddHeader("x-ms-write","update")

sbResponseBody = chilkat2.StringBuilder()
# IMPORTANT:  Don't forget the "?comp=range" at the end of the path passed in the 2nd argument.
success = rest.FullRequestBd("PUT","/pip/wildlife/antarctic/penguins.jpg?comp=range",jpgData,sbResponseBody)
if (success != True):
    # This would indicate a failure where no response was received.
    print(rest.LastErrorText)
    sys.exit()

# A 201 response indicates the data was uploaded.
if (rest.ResponseStatusCode != 201):
    # Examine the request/response to see what happened.
    print("response status code = " + str(rest.ResponseStatusCode))
    print("response status text = " + rest.ResponseStatusText)
    print("response header: " + rest.ResponseHeader)
    print("response body (if any): " + responseStr)
    print("---")
    print("LastRequestStartLine: " + rest.LastRequestStartLine)
    print("LastRequestHeader: " + rest.LastRequestHeader)
    sys.exit()

print("Successfully uploaded data into penguins.jpg")