Hi,
Pete Zehler and I spent a couple of hours today on phone and LiveMeeting,
revising the whole FaxIn model.
FaxIn model:
- FaxIn is conceptually similar to Scan from a remote platen
- we copied operations (with a few deletions) from FaxOut
- we copied elements (JobTicket, Description, Processing, Status, etc.)
from Scan
FaxInJobTicket model:
- AvailableFaxInJobTicketEntry now has Id (for add/modify/delete table row
via Set)
- every AvailableFaxInJobTicketEntry must be searched for "best" match of
FaxInMetrics
when creating a job (i.e., strictly most matching elements, with no
weighting)
FaxInJob model:
- every FaxInJob is owned/created by the System (*not* by the FaxInService)
based on operations/signals and data received on an associated
InputChannel
- even PSTN uses an InputChannel on top of a FaxModem subunit,
similar to a print InputChannel on top of an ordinary Interface subunit
- while Internet Fax uses an InputChannel on top of SMTP on top of Interface
FaxInService setup:
- Admin uses SystemControlService to Startup a FaxInService
(Disabled/Paused)
- Admin configures DefaultFaxInJobTicket
- Admin optionally configures AvailableFaxInJobTickets w/ FaxInMetrics
(subaddress, etc.)
- Admin does Enable/Resume on FaxInService
FaxInJob lifecycle:
0) Incoming connection arrives on FaxModem, SMTP, or other InputChannel
- connection parameters are negotiated successfully
1) System sends (implicit?) CreateFaxInJob to FaxInService
(specifying InputChannel for streaming?)
- FaxInService assigns JobId
2) System sends (implicit?) AddFaxInDocument to FaxInService
- sends image data by streaming or block transfer to FaxInService
3) System sends (implicit?) CloseFaxInJob to FaxInService
- FaxInJob becomes eligible for scheduling
(might already be streaming and printing for classic PSTN model)
4) FaxInService schedules FaxInJob
- FaxInJob enters Processing state
- images are transformed into specified output document format
- this output document is sent to one or more destinations
5) FaxInService completes FaxInJob
- FaxInJob enters a Completed state
- Job metadata is written to the durable FaxLogUri promptly (for
security/integrity)
6) FaxInJob "ages" out of the JobHistory
- but remains in the durable log
Comments?
Cheers,
- Ira
Ira McDonald (Musician / Software Architect)
Chair - Linux Foundation Open Printing WG
Secretary - IEEE-ISTO Printer Working Group
Co-Chair - IEEE-ISTO PWG IPP WG
Chair - TCG Embedded Systems Hardcopy SG
IETF Designated Expert - IPP & Printer MIB
Blue Roof Music/High North Inc
http://sites.google.com/site/blueroofmusichttp://sites.google.com/site/highnorthinc
mailto:blueroofmusic at gmail.com
Winter 579 Park Place Saline, MI 48176 734-944-0094
Summer PO Box 221 Grand Marais, MI 49839 906-494-2434
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