Automatic generation and configuration of Connectors (aka BindingFactory): slides presented at the INRIA SARDES Seminaire 19/04/07@Autrans, France

1. Sardes
Seminar
Automatic generation and
configuration of connectors
Valerio Schiavoni – Pierre Garcia
Sylvain Sicard

2. Outline Sardes
Seminar
1. Context
2.Objectives
3.Roadmap
Valerio Schiavoni & Pierre Garcia
19/04/2007 2
Sylvain Sicard

3. Context Sardes
Seminar
2 RNTL projects
●
JonES (december 2006 – february 2008)
–
Java Open ESB
●
● JBI implementation : PEtALS
SCOrWare (january 2007 - 2009)
–
SCA implementation
●
Common need
●
Build connectors between components
–
Valerio Schiavoni & Pierre Garcia
19/04/2007 3
Sylvain Sicard

4. JOnES Sardes
Seminar
Valerio Schiavoni & Pierre Garcia
19/04/2007 4
Sylvain Sicard

5. SCOrWare Sardes
Seminar
Valerio Schiavoni & Pierre Garcia
19/04/2007 5
Sylvain Sicard

6. Specifying Connectors Sardes
Seminar
Application deployers don't care about technical
●
issues involved in remote communications
Rather, they care about non-functional requirements
●
Idea
●
Extend ADLs for specifying
–
functional requirement : one-way
●
non functional requirements : ordering,
●
security, reliability ...
Valerio Schiavoni & Pierre Garcia
19/04/2007 6
Sylvain Sicard

7. Configuring (efficient) connectors Sardes
Seminar
Exploit a representation of the hardware in a DSL
●
(HDL) describing
Node configuration
–
Network topology/caratheristics
–
For example:
●
A network topology description model for grid
–
application deployment [INRIA,LacPerPri2004grid]
using both descriptions we want to generate
●
appropriate and efficient connectors
appropriate means meeting non functional
–
requirements specifyed in the application
efficient meaning well-configured
–
Valerio Schiavoni & Pierre Garcia
19/04/2007 7
Sylvain Sicard

8. ADL + HDL : Example 1 Sardes
Seminar
ADL describes 2 components
●
HDL describes a firewall between them
●
-> HTTP Connector has to be built
Valerio Schiavoni & Pierre Garcia
19/04/2007 8
Sylvain Sicard

9. ADL + HDL : Example 2 Sardes
Seminar
JORAM use-case
●
Configuration of causal ordering
●
Ability to choose the best available configuration
●
Valerio Schiavoni & Pierre Garcia
19/04/2007 9
Sylvain Sicard

10. Fractal HA : Example 3 Sardes
Seminar
Objectives
●
Provide high availability to Fractal components
–
HA as a non-functional service in Fractal
–
Usable starting from the level 0.1 of the Fractal specification.
–
Need of a BindingController
●
Minimize constraints on components
●
Independent from Fractal implementation
●
(Julia/AOKell/…)
Valerio Schiavoni & Pierre Garcia
19/04/2007 10
Sylvain Sicard

11. Fractal HA : Example 3 Sardes
Seminar
<definition name="HelloWorld">
<interface name="r" role="server" signature="java.lang.Runnable"/>
<component name="client">
<interface name="r" role="server" signature="java.lang.Runnable"/>
<interface name="s" role="client" signature="Service"/>
<content class="ClientImpl"/>
<controller desc="primitive"/>
</component>
<component name="server">
<interface name="s" role="server" signature="Service"/>
<content class="ServerImpl"/>
<controller desc="primitive"/>
<nonfunctionalproperties>
<FHA strategy=“active” vnode="gf1,gf2,gf3"/>
</nonfunctionalproperties>
</component>
<binding client="this.r" server="client.r"/>
<binding client="client.s" server="server.s"/>
</definition>
Valerio Schiavoni & Pierre Garcia
19/04/2007 11
Sylvain Sicard

12. Fractal HA : Example 3 Sardes
Seminar
Valerio Schiavoni & Pierre Garcia
19/04/2007 12
Sylvain Sicard

13. Fractal HA : Example 3 Sardes
Seminar
<definition name="HelloWorld">
<interface name="r" role="server" signature="java.lang.Runnable"/>
<component name="client">
<interface name="r" role="server" signature="java.lang.Runnable"/>
<interface name="s" role="client" signature="Service"/>
<content class="ClientImpl"/>
<controller desc="primitive"/>
<nonfunctionalproperties>
<FHA strategy=“active” vnode="gf3,gf4,gf5"/>
</nonfunctionalproperties>
</component>
<component name="server">
<interface name="s" role="server" signature="Service"/>
<content class="ServerImpl"/>
<controller desc="primitive"/>
<nonfunctionalproperties>
<FHA strategy=“active” vnode="gf1,gf2,gf3"/>
</nonfunctionalproperties>
</component>
<binding client="this.r" server="client.r"/>
<binding client="client.s" server="server.s"/>
</definition>
Valerio Schiavoni & Pierre Garcia
19/04/2007 13
Sylvain Sicard

14. Fractal HA : Example 3 Sardes
Seminar
Valerio Schiavoni & Pierre Garcia
19/04/2007 14
Sylvain Sicard

15. Roadmap Sardes
Seminar
1) Automatic generation of connectors
2) Configuration of connectors
Valerio Schiavoni & Pierre Garcia
19/04/2007 15
Sylvain Sicard

16. Automatic Generation of Sardes
Connectors Seminar
Build arbitrary connectors
●
Connector templates
●
Differences against Jonathan Protocol Graph
●
Aspect Oriented Connectors
●
given a connector template, how to add non-
●
functional requirements (reliability, security)
Valerio Schiavoni & Pierre Garcia
19/04/2007 16
Sylvain Sicard

17. Configuration of Connectors Sardes
Seminar
Designing algorithms to
●
choose a template that fits non-functional
●
requirements (ADL) and hardware resources (HDL)
properly configure template
●
Example: choosing the best protocol implementation
●
for total order
token-based -> homogenous cluster
●
(fixed) sequencer-based -> heterogenous cluster
●
tree-based -> grid
●
Valerio Schiavoni & Pierre Garcia
19/04/2007 17
Sylvain Sicard

18. Short-term plan Sardes
Seminar
Understand Jonathan
●
Understand FractalRMI
●
Replace Jonathan with DREAM
●
Use cases for automatic generation of connectors
●
i.e. JGroups connector to implement group
●
communication (broadcast, group RPC...) in Fractal
Could be use to build Fractal HA
●
Valerio Schiavoni & Pierre Garcia
19/04/2007 18
Sylvain Sicard

19. Mid-term plan Sardes
Seminar
June : show-casing use-cases
●
September: connector template framework and library
●
December: configuration algorithms
●
Valerio Schiavoni & Pierre Garcia
19/04/2007 19
Sylvain Sicard

20. Sardes
Seminar
Questions ?

21. References Sardes
Seminar
Hardware Definition Language:
●
NDL: http://www.science.uva.nl/research/sne/ndl/
–
WS-Topology: http://www.computing.dcu.ie/~rbarrett/ircset_poster_2.pdf
–
http://www.optiputer.net/files/DeLAAT-uva-sc06-NetworkDescriptionLanguage-23Jan07.pd
–
Valerio Schiavoni & Pierre Garcia
19/04/2007 21
Sylvain Sicard