Plan for ingesting EVLA BDF files directly into NGAS. 2009-10-21 JMB

1. BDF files are written in /home/cbe-control/wcbe/data and appear 
   when they are finished. If they appear in this directory, they're closed.

2. File naming convention : uid___evla_bdf_X1255976619204

3. Build shell named 'ingestBDFSIntoArchive' ..

   - Polls /home/cbe-control/wcbe/data every few minutes..
     
   - skip over bdf's with any ext's 
     
   - cp (later ln -s) bdf files into NGAMS_ARCHIVE_CLIENT/queue
     as uid___evla_bdf_X1255976619204.bdf

   - rename /home/cbe-control/wcbe/data file :
        uid___evla_bdf_X1255976619204.sub (submitted to NGAS queue)

   - check the successfully ngas'd files in  NGAMS_ARCHIVE_CLIENT/archived
     rename : uid___evla_bdf_X1255976619204.loaded
              uid___evla_bdf_X1255976619204.failed

5. Clean bdf's in  /home/cbe-control/wcbe/data 
   
    - bdf file size, lookup NGAS file size
    - calculate file checksum, lookup NGAS checksum

4. Check if this bdf is a member of an SDMBDF file set in the 
   archive (db). Looking for orphans.

.   - rename : uid___evla_bdf_X1255976619204.lost