SOA Development and Deployment

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SOA Development and Deployment

• B. Ramamurthy

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Topics

• We looked at a design of a basic SOA.
• We essentially designed the layers enterprise,
  process, intermediary, basic layers.
• We also discovered the services in these layers.
• In this lecture we will look at
• Components of a web services software
• Framework needed to develop, deploy and consume
  web services

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Develop and deploy SOA

• Language and a platform (Java on Windows, Java on
  Linux, or Java on Solaris)
• IDE for development (Netbeans, Eclipse, BEA
  Weblogic, IBMs Websphere, Oracle JDevloper)
• Application Server/Container for deployment
  (Apaches Tomcat, IBMs Axis, Suns JWS, Suns
  Glassfish, Oracles IAS)
• Build tools (Apache Ant, Unix Make utility) and
  project management tools (Apache Maven)
• Web server for web clients (Microsofts IIS,
  Netscape, Mozilla Firefox)
• Testing tools such as JUnit or NUnit testers that
  are usually packaged with an IDE
• And then there are standards WC3s, WS-I, WS-

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Your Choice

• Linux, Java 5 EE, Glassfish, Ant, Maven, command
  line
• Linux, Java 5 EE, Glassfish, Ant, Eclipse
• Windows, Java 5 EE, Java Web Server (JWS), Ant,
  Netbeans
• Windows, .NET C, Visual Studio .NET, its build
  tools
• Open source stack Linux, Apache, MySQL, PHP
  LAMP no particular IDE

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Application Architecture
SOAP over HTTP
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Develop/Deploy (DD) Cycle (server side)

• Devlop/deploy cycle uses wscompile and wsdeploy
  tools to create artifacts
• Wscompile is invoked on a service endpoint
  interface or WSDL to generate artifacts specified
  by Java-WS specs and a model file.
• A model is a Java-WS representation of a web
  service generated by wscompile, usually in
  .xml.gz file.
• Artifacts generated by wscompile are bundled
  together to form a war file along with a
  deployment descriptor (raw WAR file). Raw WAR
  file contains portable artifacts.
• wsdeploy tool takes this raw WAR file as an
  input, processes it and generates a WAR file
  (cooked WAR file) which can be deployed in a
  servlet container, exposing web service and
  associated WS to a client. Cooked WAR file
  contains implementation-specific artifacts.

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Develop/ Deploy Cycle
Service Endpoint Interface
wscompile
Portable artifacts
WSDL
Model
wsdeploy
Deployment Descriptors
Cooked WAR
Deployed in a container
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Invocation Model (client side) or Invoke Cycle
wscompile
Portable artifacts
WSDL
Implementation -specific artifacts
Client code
Client
Invoke web service
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wscompile

• Tool to generate client-side and server-side
  artifacts (support files) required by Java-WS.
• It can run from the shell using
• wscompile options config_file
• Ex
• wscompile gen classpath lib/foo.jar/bar.jar
  generated config.xml
• Ant task for wscompile is somewhat like this
• ltwscompile
• gen true
• base build
• classpath xyz.jar
• config config.xmlgt

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cinfig.xml

• Configuration file is the primary source of
  information for wscompile tool.
• The xml file has elements for service, wsdl,
  modelfile etc.
• End point definitions for server and port number
  are also specified.

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wsdeploy tool

• wsdeploy tool is used to generate a WAR file that
  can be deployed in a container such as Tomcat,
  J2EE Glasfish, JBoss.
• It takes a raw WAR file that contains a service
  endpoint interface, a service endpoint
  implementation, any value types, any
  service-specific exceptions, a model file, a
  deployment descriptor and generates an
  implementation-specific cooked WAR file.
• This generates serializers, ties, runtime
  descriptors, other files needed for runtime
  deployment.
• You will use an ant task to generate the war.

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Apache Ant Tool

• Ant tool is an XML based build tool.
• Ant requires its config files to be specified in
  XML format.
• Config file build.xml has general commands for
  ant tool.
• Ant tool is used for build, deploy, and run java
  applications.
• See these tutorial for more information on ant
• Ant Book Chapter
• http//www.oreilly.com/catalog/anttdg/chapter/ch01
  .pdf

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Lets Review Basics with Netbeans

• Java class
• Java Application
• Develop and execute Java program with Netbeans
  IDE
• Simple WS and WS client
• Lets study the client semantics
• Lets understand ports, end points and WSDL

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Netbeans documents

• www.netbeans.org
• http//www.netbeans.org/kb/55/quickstart-webapps.h
  tml
• http//www.netbeans.org/kb/55/javase-intro.html
• Also look at the help available within the IDE.

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Summary

• We learned how to create a simple web service,
  develop and deploy it and consume it in different
  types of clients.
• This exercise forms the basis for the composite
  SOA application you will be building for this
  course.