[Moims-dai] Notes from this week's meet and agenda for Washington

Sat Apr 13 12:16:59 UTC 2024

You could change "Implementation of ISO comments" to "Awaiting publication
by CCSDS and ISO"

..David

From: MOIMS-DAI <moims-dai-bounces at mailman.ccsds.org> On Behalf Of Daniel
Fischer via MOIMS-DAI
Sent: Friday, April 12, 2024 8:31 AM
To: moims-dai at mailman.ccsds.org
Cc: Daniel Fischer <Daniel.Fischer at esa.int>
Subject: Re: [Moims-dai] Notes from this week's meet and agenda for
Washington
Importance: High

Hi Dave,

Could you kindly check if the summary I have for DAI in the MOIMS plenary
presentation is accurate.

I would need an answer asap.

Cheers

Daniel

ESA - European Space Agency
Daniel Fischer  I  Head of Ground Segment System and Cybersecurity
Engineering

Ground Segment Engineering and Innovation Department
Directorate of Operations
ESOC I Robert-Bosch-Str. 5, 64293 Darmstadt, Germany
Tel: +49 6151 902718
 <mailto:Daniel.Fischer at esa.int> Daniel.Fischer at esa.int   I
<http://www.esa.int/> www.esa.int

From: MOIMS-DAI <moims-dai-bounces at mailman.ccsds.org
<mailto:moims-dai-bounces at mailman.ccsds.org> > On Behalf Of David Giaretta
via MOIMS-DAI
Sent: Thursday, April 11, 2024 12:51 PM
To: MOIMS-DAI List <moims-dai at mailman.ccsds.org
<mailto:moims-dai at mailman.ccsds.org> >
Cc: david at giaretta.org <mailto:david at giaretta.org> 
Subject: [Moims-dai] Notes from this week's meet and agenda for Washington

The draft agenda for the Washington meeting is available at
https://cwe.ccsds.org/moims/docs/MOIMS-DAI/Meeting%20Materials%20and%20Minut
es/2024-04-Washington-DC/CCSDS%20MOIMS-DAI%20Spring%202024%20Agenda.docx?d=w
40928681dced4a5a84312c7224bc1757

Please let me know what alterations are needed.

I apologise that I will not be able to attend in person because we are
moving house and there are a lot of things to be done, however I should be
able to join the meetings virtually all day - I have the morning to do
moving stuff because of the time difference in the UK!

This week we discussed some of the remaining RIDS

*	http://review.oais.info/show_bug.cgi?id=387
<https://eur05.safelinks.protection.outlook.com/?url=http%3A%2F%2Freview.oai
s.info%2Fshow_bug.cgi%3Fid%3D387&data=05%7C02%7Cdaniel.fischer%40esa.int%7Cc
ae10af8ad0d4512fe8d08dc5a1548c8%7C9a5cacd02bef4dd7ac5c7ebe1f54f495%7C0%7C1%7
C638484294677239944%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2lu
MzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=TcbxqplG2mzgg0i5V6X9uq
MaCAtPhsR2fVzw%2BkGQS4o%3D&reserved=0>     - agree that this is an OK
summary of changes

http://review.oais.info/show_bug.cgi?id=388
<https://eur05.safelinks.protection.outlook.com/?url=http%3A%2F%2Freview.oai
s.info%2Fshow_bug.cgi%3Fid%3D388&data=05%7C02%7Cdaniel.fischer%40esa.int%7Cc
ae10af8ad0d4512fe8d08dc5a1548c8%7C9a5cacd02bef4dd7ac5c7ebe1f54f495%7C0%7C1%7
C638484294677253719%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2lu
MzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=%2BoZmLgPIZkRtJ%2B5%2B
V28ZX%2BFpBHIQxy3E7eSmupUvkGM%3D&reserved=0>  -   agree that this is an OK
summary of changes

*	http://review.oais.info/show_bug.cgi?id=349
<https://eur05.safelinks.protection.outlook.com/?url=http%3A%2F%2Freview.oai
s.info%2Fshow_bug.cgi%3Fid%3D349&data=05%7C02%7Cdaniel.fischer%40esa.int%7Cc
ae10af8ad0d4512fe8d08dc5a1548c8%7C9a5cacd02bef4dd7ac5c7ebe1f54f495%7C0%7C1%7
C638484294677265955%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2lu
MzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=a6n9VeciLEj4cj%2BEoQ4x
%2FZkNio8uLZGv3zL8EOzvQeM%3D&reserved=0>  - need input from JGG
*	an old one we need to resolve
http://review.oais.info/show_bug.cgi?id=389
<https://eur05.safelinks.protection.outlook.com/?url=http%3A%2F%2Freview.oai
s.info%2Fshow_bug.cgi%3Fid%3D389&data=05%7C02%7Cdaniel.fischer%40esa.int%7Cc
ae10af8ad0d4512fe8d08dc5a1548c8%7C9a5cacd02bef4dd7ac5c7ebe1f54f495%7C0%7C1%7
C638484294677274493%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2lu
MzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=2PNN47cHqhvONuxhmvU5Oo
JsdaUoKW4YTS%2B602EsiW8%3D&reserved=0>   - some duplication must be sorted
out and gives us an opportunity to add an important missing metric. 

*	We will close this next week. Please provide any inputs.

Other points:

*	ESA draft OAIS-IF YB should available next week
*	ESA feedback on OAIS-IF BB depends on availability of Massimo, the
ESA developer, but should be soon.

I have proposed a JSON schema for the Information Packages, which seems to
validate against the example IPs and AIP in the BB. This allows the BB to be
more precise, but no changes needed in existing software which were based on
those examples.

One extra thing that was added, but not shown in those examples is the
encoding of embedded binary objects. This makes the JSON able to point to an
external file, or to an internal part of the JSON (using JSONPath) or embed
a binary object in the JSON - just as XFDU allows. The tricky point is that
JSON must be  text (actually UTF-8) for interchanges between different
systems (https://www.rfc-editor.org/rfc/pdfrfc/rfc8259.txt.pdf
<https://eur05.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.rfc-e
ditor.org%2Frfc%2Fpdfrfc%2Frfc8259.txt.pdf&data=05%7C02%7Cdaniel.fischer%40e
sa.int%7Ccae10af8ad0d4512fe8d08dc5a1548c8%7C9a5cacd02bef4dd7ac5c7ebe1f54f495
%7C0%7C1%7C638484294677281724%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLC
JQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=tMVyg18pRAZ3
3Kzfok5EIfZQJQnv2JvRncRwZkM6tl8%3D&reserved=0> ), so binary files must be
encoded appropriately. The actual encoding should be part of the RepInfo.

Terry raised the point that binary files that were not 8-bit multiples could
be a problem. My assumption is that padding would solve this, with
appropriate RepInfo, but others should think about it.

..Regards

..David

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