CkPython

Azure File Service: Upload File

See more Azure Cloud Storage Examples

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. CkPython

import sys
import chilkat

success = False

# 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 = 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.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 = chilkat.CkBinData()
jpgData.LoadFile("qa_data/jpg/penguins.jpg")

# Provide Azure Cloud credentials for the REST calls.
azAuth = chilkat.CkAuthAzureStorage()
azAuth.put_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.put_Account("chilkat")
azAuth.put_Scheme("SharedKey")
azAuth.put_Service("File")
# This causes the "x-ms-version: 2021-08-06" header to be automatically added.
azAuth.put_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 = chilkat.CkStringBuilder()
sbFileSize.AppendInt(jpgData.get_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.get_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.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): " + 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 = chilkat.CkStringBuilder()
sbRange.Append("bytes=0-")
sbRange.AppendInt(jpgData.get_NumBytes() - 1)

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

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

sbResponseBody = chilkat.CkStringBuilder()
# 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.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): " + responseStr)
    print("---")
    print("LastRequestStartLine: " + rest.lastRequestStartLine())
    print("LastRequestHeader: " + rest.lastRequestHeader())
    sys.exit()

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