XRootD Buffer

General Design

• DUNE DocDB 1628

XROOTD-FTS Interface

Design Considerations

• ofs.notify can be set to send ASCII messages to a FIFO or a user app/script
• format and content of the message can be configured by the developer
• considerations for blocking of xrootd by the reader of the FIFO

Functionality

• Receive a notification and parse it
• Run a part or all of the metadata generation, write it to a JSON file
• Send a HTTP post to the F-FTS agent