Purge, Appendix a component interaction diagrams – Grass Valley NewsBrowse Desktop Browsing System Installation v.2.7 User Manual

Page 140

140

NewsBrowse Installation and Configuration Guide

December 16, 2004

Appendix A Component Interaction Diagrams

Purge

Rules

Wizard

Metadata

Service

Profile MDI*

Server

Profile
Video
Server

Proxy

MDI*

*MDIs can alternatively reside on encoders,
ISS platforms, or a dedicated MDI server.

Resolver

The Rules Wizard periodically
queries the Metadata Service
for a list of metadata records
that are set to expire. The
Metadata Service only returns
assets that are set to expire and
are not flagged as being on
hold.

For each metadata
record set to expire the
Rules Wizard queries
the ASK for related
asset components (e.g.
High-res, storyboard,
thumbnail, etc.).

For each asset component the Rules
Wizard communicates the appropriate
MDI to initiate a delete. The MDI
communicates to the appropriate device
(Profile Video Server or Storage file
system) to complete the delete.

Purge removes all associated components
of an asset. The metadata record is the
last component deleted, so that if for any
reason an asset fails to delete, its record
is still intact and the asset is visible to the
NewsBrowse application.

1.3.1: delete high-res

1.3:

delet

asset

1.4:

delete

asset

1.1:

et e

xpired assets

1.5:

delete m

etadata recor

1.2:

et asse

compo

nents

Proxy

Storage

Storage
(NAS)

1.4.1:

delete p