(CkPython) Azure Storage: Lease Container

Azure Storage Blob Service REST API: Sample code to establishes a lock on a container for delete operations. The lock duration can be 15 to 60 seconds, or can be infinite.

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import sys
import chilkat

# Azure Blob Service Example: Lease Container
# See also: https://msdn.microsoft.com/en-us/library/azure/jj159103.aspx

# 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()

# Provide Azure Cloud credentials for the REST call.
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("Blob")
# This causes the "x-ms-version: 2020-08-04" header to be automatically added.
azAuth.put_XMsVersion("2020-08-04")
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.

# The lease ID needs to be a GUID.  (UUID and GUID are synonymous)
crypt = chilkat.CkCrypt2()
guid = crypt.generateUuid()
print("Lease ID: " + guid)
success = rest.AddHeader("x-ms-lease-id",guid)

# The action can be "acquire", "renew", "change", "release", or "break".
# See https://msdn.microsoft.com/en-us/library/azure/jj159103.aspx
success = rest.AddHeader("x-ms-lease-action","acquire")

# The lease duration..
success = rest.AddHeader("x-ms-lease-duration","15")

# In this example, we are acquiring a lease for the container named "mycontainer".
responseStr = rest.fullRequestNoBody("PUT","/mycontainer?restype=container&comp=lease")
if (rest.get_LastMethodSuccess() != True):
    print(rest.lastErrorText())
    sys.exit()

# When successful, the Azure Storage service will respond with a 200, 201, or 202 response status code,
# with no response body.

# The status code depends on the operation:
#    Acquire: A successful operation returns status code 201 (Created).
#    Renew: A successful operation returns status code 200 (OK).
#    Change: A successful operation returns status code 200 (OK).
#    Release: A successful operation returns status code 200 (OK).
#    Break: A successful operation returns status code 202 (Accepted).

if ((rest.get_ResponseStatusCode() < 200) or (rest.get_ResponseStatusCode() > 202)):
    # 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("Success: Lease acquired.")