save-payload-to-mpl-attachment-with-log-level.groovy: Use properties SAP_MPL_LogLevel_*

[vadimklimov]

To determine a log level during message processing using a Groovy script, it is now recommended to retrieve it from exchange properties SAP_MPL_LogLevel_* (SAP_MPL_LogLevel_Internal, SAP_MPL_LogLevel_External and SAP_MPL_LogLevel_Overall) as opposed to deriving it from the exchange property SAP_MessageProcessingLogConfiguration.

More information and details about this:

• SAP Cloud Integration documentation,
• Contributions to SAP Integration Suite documentation - issue Documenting how to get the current log level.

[fatihpense]

Thank you for the heads-up and pull request Vadim! I hope this will increase the visibility of this best-practice.

[vadimklimov]

Thank you, @fatihpense. It is my pleasure to contribute to your initiative and this repository of best practices. Keep up the great job!