AuthAzureStorage Lua Reference Documentation
chilkat.AuthAzureStorage
Current Version: 11.7.0
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Chilkat.AuthAzureStorage
Hold the storage account name and Base64 account access key used to sign
Azure Storage REST requests.
Configure Azure Storage authentication using
Specify the Azure Storage service being accessed, such as
Set the
Use the configured object with
Pair this authentication object with manually constructed REST requests
when application code needs direct control over Azure Storage operations.
For an extended overview, see
AuthAzureStorage Class Overview.
Authenticate Azure Storage REST requests with account-key Shared Key signing.
Chilkat.AuthAzureStorage is a credential object for Azure
Storage Services authentication. It stores the storage account name, Base64
account access key, Azure Storage service type, authentication scheme, and
x-ms-version API version used when signing REST requests for
Blob, Queue, File, or Table storage.
Azure Storage credentials
Shared Key signing
SharedKey or
SharedKeyLite, depending on the service and request style.
Service targeting
Blob, Queue, File, or
Table.
API version header
x-ms-version value required by the Azure Storage
REST API version being used.
REST integration
Chilkat.Rest so requests are
signed automatically before being sent.
Low-level control
AuthAzureStorage object, set the storage
Account, Base64 AccessKey, Service,
Scheme, and XMsVersion, then attach it to a
Chilkat.Rest request workflow. Use
AuthAzureStorage for Shared Key authorization headers; use
Chilkat.AuthAzureSAS when the request should be authorized with
a SAS query token instead.
Object Creation
local chilkat = require("chilkat")
local auth_azure_storage = chilkat.AuthAzureStorage.new()Creates the object (chilkat.AuthAzureStorage() does the same). Lua's garbage collector frees it when it is no longer referenced; auth_azure_storage:dispose() frees it at once, and in Lua 5.4 and later local auth_azure_storage <close> = chilkat.AuthAzureStorage.new() frees it when the block ends. Calling a method of a disposed object raises an error.
Errors
A method that fails returns nil followed by the error text, as io.open does: local body, err = auth_azure_storage:method(...), where err is the object's last_error_text. Wrap the call in assert() to raise an error with that text instead. Methods that answer a question return true or false, numbers are returned as they are (check last_method_success where the description says a value means failure), and property reads and writes never fail for Chilkat reasons.
Misuse raises a Lua error: a wrong argument type or a missing argument (bad argument #1 to ...), an unknown property name, a write to a read-only property, an out-of-range integer, or an object of the wrong class.
Names are Chilkat's in snake_case: QuickGetStr is quick_get_str, LastErrorText is last_error_text. Properties are fields (auth_azure_storage.verbose_logging = true) and methods use the colon (auth_azure_storage:method(...)). Strings are UTF-8; binary data is a Lua string of bytes. Indexes are 0-based, as in every Chilkat API. Unlocking: call chilkat.unlock_bundle("...") once at startup.
Properties
AccessKey
local strVal = auth_azure_storage.access_key
auth_azure_storage.access_key = strVal
Account
local strVal = auth_azure_storage.account
auth_azure_storage.account = strVal
The Azure storage account name. (A storage account can contain zero or more containers. A container contains properties, metadata, and zero or more blobs. A blob is any single entity comprised of binary data, properties, and metadata. )
topDebugLogFilePath
local strVal = auth_azure_storage.debug_log_file_path
auth_azure_storage.debug_log_file_path = strVal
If set to a file path, this property logs the LastErrorText of each Chilkat method or property call to the specified file. This logging helps identify the context and history of Chilkat calls leading up to any crash or hang, aiding in debugging.
Enabling the VerboseLogging property provides more detailed information. This property is mainly used for debugging rare instances where a Chilkat method call causes a hang or crash, which should generally not happen.
Possible causes of hangs include:
- A timeout property set to 0, indicating an infinite timeout.
- A hang occurring within an event callback in the application code.
- An internal bug in the Chilkat code causing the hang.
LastErrorHtml
local strVal = auth_azure_storage.last_error_html
Provides HTML-formatted information about the last called method or property. If a method call fails or behaves unexpectedly, check this property for details. Note that information is available regardless of the method call's success.
topLastErrorText
local strVal = auth_azure_storage.last_error_text
Provides plain text information about the last called method or property. If a method call fails or behaves unexpectedly, check this property for details. Note that information is available regardless of the method call's success.
LastErrorXml
local strVal = auth_azure_storage.last_error_xml
Provides XML-formatted information about the last called method or property. If a method call fails or behaves unexpectedly, check this property for details. Note that information is available regardless of the method call's success.
topLastMethodSuccess
local boolVal = auth_azure_storage.last_method_success
auth_azure_storage.last_method_success = boolVal
Indicates the success or failure of the most recent method call: true means success, false means failure. This property remains unchanged by property setters or getters. This method is present to address challenges in checking for null or Nothing returns in certain programming languages. Note: This property does not apply to methods that return integer values or to boolean-returning methods where the boolean does not indicate success or failure.
Scheme
local strVal = auth_azure_storage.scheme
auth_azure_storage.scheme = strVal
Can be SharedKey or SharedKeyLite. The default value is SharedKey.
Service
local strVal = auth_azure_storage.service
auth_azure_storage.service = strVal
Can be Blob, Queue, File, or Table. The default is Blob.
Note: Authentication for the Table service did not work in versions prior to v9.5.0.83.
VerboseLogging
local boolVal = auth_azure_storage.verbose_logging
auth_azure_storage.verbose_logging = boolVal
If set to true, then the contents of LastErrorText (or LastErrorXml, or LastErrorHtml) may contain more verbose information. The default value is false. Verbose logging should only be used for debugging. The potentially large quantity of logged information may adversely affect peformance.
Version
local strVal = auth_azure_storage.version
XMsVersion
local strVal = auth_azure_storage.xms_version
auth_azure_storage.xms_version = strVal
If set, automatically adds the x-ms-version HTTP request header to Azure Storage requests. The default value is 2014-02-14.