Speaker
S. Veseli
(Fermilab)
Description
The SAMGrid Database Server encapsulates several important services, such as
accessing file metadata and replica catalog, keeping track of the processing
information, as well as providing the runtime support for SAMGrid station
services. Recent deployment of the SAMGrid system for CDF has resulted in
unification of the database schema used by CDF and D0, and the complexity
of changes required for the unified metadata catalog has warranted a
complete redesign of the DB Server.
We describe here the architecture and features of the new server. In particular,
we discuss the new CORBA infrastructure that utilizes python wrapper classes
around IDL structs and exceptions. Such infrastructure allows us to
use the same code on both server and client sides, which in turn results
in significantly improved code maintainability and easier development.
We also discuss future integration of the new server with an SBIR II
project which is directed toward allowing the dbserver to access distributed
databases, implemented in different DB systems and possibly using different
schema.
Authors
A. Baranovski
(Fermilab)
A. Kreymer
(FERMI NATIONAL ACCELERATOR LABORATORY)
A. Lyon
(FERMI NATIONAL ACCELERATOR LABORATORY)
A. Sill
(Texas Tech. University)
F. Ratnikov
(Rutgers University)
G. Garzoglio
(FERMI NATIONAL ACCELERATOR LABORATORY)
I. Terekhov
(Fermilab)
J. Trumbo
(Fermilab)
L. Loebel Carpenter
(Fermilab)
L. Lueking
(FERMI NATIONAL ACCELERATOR LABORATORY)
M. Burgon-Lyon
(Glasgow University)
M. Leslie
(Oxford University)
R. Herber
(FERMI NATIONAL ACCELERATOR LABORATORY)
R. Illingworth
(FERMI NATIONAL ACCELERATOR LABORATORY)
R. Kennedy
(FERMI NATIONAL ACCELERATOR LABORATORY)
R. St.Denis
(Glasgow University)
S. Belforte
(INFN Trieste)
S. Stonjek
(Oxford University)
S. Veseli
(Fermilab)
S. White
(Fermilab)
U. Kerzel
(Karlsruhe University)
V. Bartsch
(Oxford University)
W. Merritt
(FERMI NATIONAL ACCELERATOR LABORATORY)
