AW Groupies

Purpose

Serious technical discussion about Linden Lab's Architecture Working Group (AWG). "AW Groupies" is an unofficial, Resident-operated group, though most (all?) members also participate in the AWG.

Invite only (apply in-world to Zha Ewry), but the criterion is simple. Show up and contribute to the AWG, at Zero Linden's office hours, or on the Wiki, or on SL-Dev or in the irc channel for the Python test client.

Activities

The main AWG meeting is held annually or semi-annually. We now meet up to 8 times a week in-world, counting AW Groupies meeting, Zero's office hours, Which's office hours, Enus's office hours, Whump's office hours and the pygop daily meetings.

Our main focus these days is on the Open Grid Protocol, the Open_Grid_Public_Beta and the pyogp Python test harness for protocol testing.

Also members are quite active on the wiki and in the SLDEV mailing list.

A public SVN repository is open to all AW Groupies members here:

• http://openmv.org/cgi-bin/viewvc.cgi/archwg/

Contact anyone with root on openmv.org for an account if you are in the AW Groupies group in-world.

Architecture Working Group meetings

• AWG I annual meeting transcript, participants' responses, etc
• AWG II annual meeting transcript, video, participants' responses, etc

In-World Meetings

AW Groupies meeting

Weekly meeting times are:

• Mondays ------- 9:30 AM SLT at PyOGP Coders twice-weekly meeting @ infinity is full of stars.

• Tuesdays ------ 9:30 AM SLT at Zha's IBM Island at ThorneBridgeTown (weekly AWG meeting)
• ------------------ 1 PM SLT at Zero Linden's office hours at Grasmere

• Wednesdays -- 9:30 AM SLT at PyOGP Coders twice-weekly meeting @ infinity is full of stars.
• ------------------ 1:30 PM SLT @ Whump Linden's Office Hours (main meeting for public grid open beta)
• Thursdays ----- 8:30 AM SLT at Zero Linden's office hours at Grasmere
• ------------------ 11 AM SLT at Which Linden's office hours at Beaumont (often AWG-related these days)
• Fridays --------- 9:30 AM SLT Enus Linden's Office Hours (starring PyOGP and a cast of several)

Meetings are scheduled via the "SL AW Groupies" google calendar"

• XML
• ICal
• Calendar ID: pdd5mpktklo89bgmfgi076mcc4@group.calendar.google.com
• Add to your Google Calendar

Meeting Agendas

Each meeting should have an agenda --- which will be distributed via

• google calendar entry
• in-world notice to the SL "AW Groupies" group
• the AW Groupies In-World Meeting Agenda wiki page

OpenSim meeting

• Tuesdays/Saturdays noon SLT, at Wright Town sim in OSGrid. Registration Page

Set client command line options to:

-loginuri http://osgrid.org:8002

-loginpage http://osgrid.org/loginscreen.php

-helperuri http://osgrid.org/

Chat Logs

Chat logs of the in-world meetings are published and accessible via the links below:

• 2007 meetings

• September: 28
• October: 1 5 9 --Zero's office 16
• November: 6 13 20

• 2008 meetings

• January: 08
• February: 19
• April: 08 22 29
• May: 20 27
• June: 03 10 17 24
• July: 01 08 15 22 29
• August: 05 12 19 26
• September 2 9 16 23

• All Grid Interoperability chat logs
• All AW Groupies chat logs
• All Pyogp chat logs
• All Open Grid Public Beta Transcripts
• Zero Linden's Office Hour Transcripts
• Which Linden's Office Hour Transcripts
• Enus Linden Office Hour Transcripts
• Whump Linden Office Hour Transcripts
• OpenSim chat logs
• mono beta meeting discussion of het-grid

(if you post chat logs, you might want to use the sllog2wiki perl script to turn them into a more readable wiki table format ready to copy & paste into the chat log page)

Chat logs of AWGroupies meetings should be summarized on the wiki.

Viewpoint Advocacy Groups

Viewpoint Advocacy Groups - groups to focus on specific requirements.

AWG-specific VAGs

• Core Grid Services, Protocols, and Structures VAG
• Event Scalability VAG
• Geometry and Physics VAG
• Live Performances VAG
• Quality Assurance VAG
• Scalability VAG

AWG-related VAGs

• Map_API_VAG
• Multi-Process Client VAG -- draft

Work-In-Progress

Work-in-progress wiki pages are architecture pages that are (as the name implies ;-)) work in progress. Once the group has reached consensus that a particular topic is "good-to-go" we'll graduate that page to the main AWG page.

General Concerns

• Scoping
• Glossary
• Use Cases

Communications

• Initial CAPS seed
• AWG initial flows
• AWG flows login

• Mudata
• Streamlet

Documenting current protocols

• Python test harness for OGP
  • Which Linden office hours 22 May 2008

AWG and citizen pages

• Current_login_protocols
• Current_Sim_Capabilities
• Example_protocol_code
• Hegemons_Login_Analysis#Very_simple_C.23__server
• Litesim grid interop

Linden Lab pages

• "Satellite's Eye" view of the Second Life architecture from a service disruption POV
• Message_System_and_Capabilities
• Viewer_Authentication
• Viewer_Architecture
• Protocol
• LLSD
• Certified_HTTP_Escrow
• ImprovedInstantMessage
• client command line parameters and stuff

libsecondlife reference pages

• Login page
• Protocol page
• packets index
• Movement

opensim reference pages

• opensim grid architecture diagram
• login diagram (same general sequence as current LL login)

Future Protocols

• Second_Life_Login_API_Strawman

deprecated in favor of:

• Open Grid Protocol
  • SLGOGP_Teleport_Strawman
• Ongoing next generation protocols documentation effort by Linden Lab

Possible future directions

• OpenID A decentralized single sign-on system
• Yardis A digital identity protocol

Asset Security and Trust

• Asset Handling in OGP
• Protecting content in an open grid
• OGP Trust Model

Scaling Issues

• Region Subdivision
• Reverse Proxies
• Resident Subdivision

Other

• Extended Capability Clients

Thinking-in-Progress

• Have a look and contribute to the brainstorming page.

• It's early days on the Multi-Process Client VAG -- draft, but we would highly appreciate input to help with design choices and direction.

External Resources

Stuff of interest to or in connection with the AW Groupies or the Architecture Working Group:

• Developer Communication Tools (Linden Lab)
• SLDev Main Page
• Open_Grid_Public_Beta
• Pyogp {Linden Labs/ AWG Python-based protocols testing library)
• OpenMetaverse Home
  • libsecondlife (libsl) homepage
  • opensim homepage
  • openviewer homepage
• OSGrid: open/non-profit OpenSim based grid
• realxtend homepage
• IBM PR re: AWG

Mailing Lists

• List of Linden Lab mailing lists
  • SLDEV Main mailing list for SL developers
  • gridnauts Mailing list for participants in Open Grid Public Beta
  • PyOGP Mailing List for Python-based client library and test harness for the Open Grid Protocols
• libsecondlife
• opensim
• openviewer

IRC

• irc://irc.efnet.net/#opensl
• irc://irc.freenode.net/#opensim * irc://irc.freenode.net/#opensim-dev
• irc://irc.efnet.net/#libsl * irc://irc.efnet.net/#libsl-dev
• irc://irc.freenode.net/#openviewer * irc://irc.freenode.net/#openviewer-dev
• irc://irc.freenode.net/#realxtend (Finnish language but can handle English if needed)
• irc://irc.freenode.net/#pyogp (Python test harness/pyogp Second LIfe library irc)
• irc://irc.freenode.net/#gridnauts (Open Grid Public Beta irc)

Forums

• realXtend google forum

Capabilities

• Capabilities theory and practice
• Zook's Triangle index -- short list of interesting articles about naming and capabilties
• Capability-based Systems by Henry Levy --online copy of 1984 book on early implementations of capabilities systems
• E language home E language home mirror E wiki --computer language dedicated to handling distributed trust issues
  • Capability Computation
  • irc://irc.freenode.net/#erights
  • E language mailing list
• mailing list for capability systems
• blog and thesis on caps in virtual worlds Martin Scheffler
• Cap-based MUD by Kevin Reid --written in E
• discussion of ancient (Commodore 64!) video game that used capabilities

Misc

• non-unique region names within the confines of a single grid, yay or nay ?
• discussion of new Map API and related issues
• Open Source Portal --index to all things Open Source for Linden Lab

Members

Founder Zha Ewry

Saijanai Kuhn

Tao Takashi

Tillie Ariantho

Dr Scofield

Burhop Piccard

Vicero Lambert

Morgaine Dinova

Silicon Plunkett

Dale Innis