SOA Track

Gaël Blondelle

SOA Standards
Open Source Solutions

SOA
Reuse

SOA
Agility

SOA
Interoperability

Standards

Java WSDL
JBI
XML
WSI
WS-*
SCA
BPEL WS-Security

Interface
Loos ht
Cou e Tig ng
pling
ou pli
C

“In the beginning was the interface
definition, and the interface
definition language was WSDL”
Dr N. Salatgé, Research Engineer
at EBM WebSourcing
WSDL enthusiast

WSDL by W3C
WSDL 1.1 WSDL 2.0
<definitions name=« … »> <description>
<types> <types>
</types> = </types>
<messages>
</messages> Ǿ
<portTypes> <interface>
</portTypes> ≈ </interface>
<binding> <binding>
</binding>
SOAP1.1 ≈ </binding> SOAP
SOAP1.2
HTTP
<service> <service>
</service>
HTTP
≈ </service> RPC
MIME
</definitions> </description>

Non consistent solutions
• WSDL4J:
http://wsdl4j.sourceforge.net/
– Handle WSDL 1.1: read/write/create
• Woden:
http://ws.apache.org/woden/
– Handle WSDL 2.0: read/write/create
– Converts WSDL1.1 to WSDL2.0 using the
W3C XSL Stylesheet with loss of data

Easy WSDL Toolbox
<description>
<types>
</types>
<messages>
</messages>
<interface>
WSDL 1.1 </interface> WSDL 2.0
<binding>
</binding> SOAP
HTTP
<service>
RPC
</service>
SOAP1.1
</description>
SOAP1.2
HTTP
MIME

Easy WSDL Toolbox
• Unifies WSDL1.1 and WSDL 2.0*
– Read
– Write
– Create
– Convert
• Can be extended
– easy-SAWSDL
– easy-WSDL4BPEL

WSDL
Loos ht
Cou e Tig ng
pling
ou pli
C

SOA
Loosely coupling

Connect the Silos

JBI
• NMR : The key for loosely coupling
External services
Process
Process
pattern
pattern
Artifacts
XSL
XSL
SOAP JMS EJB JBI
XSLT BPEL EIP Components
HTTP MOM RMI
JBI NMR

Distributed ESB
JBI Compliant
Scalable
Robust
Agile

Eclipse Tools and Web Monitoring

WSDL
ht
Tig ng
JBI Cou pli

“What if” too many integration steps?

Integration logic
• Managed as usual project
– One project manager
– Create composite applications / composite
services
• Tight coupling
– BPEL - Create services that support compensation
– Java (JSR 181 or EJB 3)
– SCA

SCA

SCA and JBI
• SCA composites inside
• JBI connections outside
Composite Binding
Service JBI
Binding
Component
WS
Binding
WS

WSDL
S CA
JBI EL
BP a
Ja v

( )
PEtALS V3
( )
• BPEL V2 support based on Orchestra
• JSR 181 support based on Axis 2
( )
• SCA support based on Frascati
– Full features SCA implementation
– Supports SCA for Java specification
– Support SCA assembly specification
( )
– Extends the Fractal Component Model

Dragon Governance solution
• Based on CBDI SOA metamodel
• Manage service lifecycle
• Manage SLA
• Connects to PEtALS
• Proposed to OW2
• First release by the end of 2008

Reading Advice
• Available at
www.soaadoptionfordummies.com
• Written by Software AG
• Good principles explained
• Consider Open Source solutions

Gouverner