SSRS Custom Delivery Extension + logging into database

I have requirement to add logging in my custom delivery extension. I want to implement logging for execution into database. I was thinking to use datasource of report to connect to database, but don't know how to get that connection info.

Many thanks in advance for your help, please advise about logging into database from custom delivery extension

To achieve your goal, you can use the GetDataSourceContents method provided by Reporting Services Web Service. For more information, please see:

    http-://msdn.microsoft.-com/en-IN/library/reportservice2010.reportingservice2010.getdatasourcecontents.aspx
    http-://msdn.microsoft.-com/en-us/library/ms152787.aspx