FraSCAti Adaptive and Reflective Middleware of Middleware Philippe Merle (Inria), Romain Rouvoy (U. Lille), Lionel Seinturier (U. Lille) ACM/IFIP/USENIX 12th International Middleware Conference, Lisbon, Portugal, 13th December 2011

Towards Middleware of Middleware

Middleware Application Operating System Application Operating System Network Middleware © 2003-2008, S. Krakowiak High level API Low level API

CORBA middleware Application Operating System Application Operating System Network Middleware OMG IDL Low level API © 2003-2008, S. Krakowiak IIOP Components Objects

Web Services middleware Application Operating System Application Operating System Network Middleware WSDL Low level API © 2003-2008, S. Krakowiak SOAP Services

REST-based middleware Application Operating System Application Operating System Network Middleware URI CRUD Verbs MIME Low level API © 2003-2008, S. Krakowiak Mainly HTTP Resources

New operating systems Application Operating System Application Operating System Network Middleware © 2003-2008, S. Krakowiak IaaS PaaS High level API Low level API

Service Component Architecture

SCA in a Nutshell (cont ’ d) Warehouse Service WarehouseComposite Warehouse Broker Component Warehouse Component Order Processing Service OrderProcessing Component Shipping Reference External Warehouse Reference Payments Component Payment Service AccountsComposite External Banking Reference Accounts Ledger Component BPEL Java EE C++ SOAP/HTTP JMS RMI/IIOP Mixed: - technologies - app locations Multi-level composition Loosely coupled Loosely coupled Closely coupled Entry Points Entry Points External Service External Service External Services Binding Wire Wire

Modelling with Eclipse SCA Tools

SCA Hello World Example

SCA Hello World Example (cont’d)

SCA Hello World Example (cont’d)

SCA Hello World Example (cont’d)

SCA Hello World Example (cont’d)

SCA Hello World Example (cont’d)

SCA Hello World Example (cont’d)

SCA Hello World Example (cont’d)

SCA Hello World Example (cont’d)

Crisis Management Orchestration BPEL script Java OSGi

FraSCAti

Interoperability and Integration

An open middleware of middleware framework Middleware for integrating middleware Apache CXF SOA stack (WS, REST) Spring Framework OSGi Apache Felix Equinox OW2 PEtALS JBI ESB Java RMI JSON RPC Java Script Engines Easy BPEL Engine . . . JMS JORAM Interoperability Integration

Reflective Component Model

An open reflective SCA platform Reflective SCA component model Middleware for integrating middleware Ad-hoc manual & anticipated scripted reconfiguration Apache CXF SOA stack (WS, REST) Spring Framework OSGi Apache Felix Equinox OW2 PEtALS JBI ESB Java RMI JSON RPC Java Script Engines Easy BPEL Engine . . . JMS JORAM API Interoperability Integration FraSCAti JMX FraSCAti REST API FraSCAti Explorer FraSCAti FScript

FraSCAti Explorer - an SCA microscope

More than just an SCA microscope

FraSCAti JMX

FraSCAti REST EMF-based metamodel

REST-based introspection

Reflective SCA component model Middleware for integrating middleware Ad-hoc manual & anticipated scripted reconfiguration Apache CXF SOA stack (WS, REST) Spring Framework OSGi Apache Felix Equinox OW2 PEtALS JBI ESB Java RMI JSON RPC Java Script Engines Easy BPEL Engine . . . JMS JORAM API Interoperability Integration FraSCAti JMX FraSCAti REST API FraSCAti Explorer FraSCAti FScript

A FraSCAti Aspect Component

FraSCAti UML Diagram Sequence Aspect

FraSCAti UML Sequence Diagram Aspect Components

Software Product Line

OW2 FraSCAti Feature Diagram

OW2 FraSCAti at S.P.L.O.T.

OW2 FraSCAti Main Modules sca-parser.jar component-factory.jar assembly-factory.jar

All OW2 FraSCAti Modules Remote Management Binding REST Binding JSON-RPC Implementation Resource Binding Factory Implementation Fractal Binding Java RMI MM FraSCAti Fscript Sca Parser … Implementation FScript Implementation JavaScript Implementation JRuby Implementation Jython Knopflerfish Equinox Apache Felix Implementation Script Implementation OSGi MG + MF Implementation Spring Implementation Xquery Implementation BeanShell Implementation Groovy Interface Native JMX MF Julia MM Native Property JAXB Binding JNA Implementation BPEL Membrane Generation MM UPnP Binding UPnP Explorer MM Tuscany Binding WS Binding JMS Interface WSDL JDT JDK6 Component Factory … Assembly Factory … MG Tinfi Binding HTTP MF Tinfi

Root OW2 FraSCAti SCA Composite Assembly Factory Sca Parser Component Factory Binding Factory Explorer Fscript JMX Remote Management

OW2 FraSCAti Assembly Factory Assembly Factory Implementations Composite Java Fractal Spring OSGi Resource Script BPEL Interfaces Java WSDL Native Bindings SCA WS UPnP REST JSON-RPC JMS HTTP Java RMI JNA Java XSD JAXB Properties

Self-introspecting with FraSCAti Explorer

Self-introspecting with FraSCAti JMX

FraSCAti « à la carte » disk footprint

Use Case

EasyBPEL http://research.petalslink.org/display/easybpel

EasyViper http://research.petalslink.org/display/easyviper

Reflective EasyBPEL

In the Clouds

A phethora of heterogeneous clouds

IaaS PaaS SaaS Amazon Elastic Beanstalk Peer-to-peer monitoring application EC2

Conclusion

Component Reflection everywhere AOP SPL DSL for reconfiguration everywhere Fractal