Developing Web Services with Oracle WebLogic Server

Gaurav Sharma

The following is intended to outline our general product direction. It is intended for information purposes only, and may not be incorporated into any contract. It is not a commitment to deliver any material, code, or functionality, and should not be relied upon in making purchasing decisions.The development, release, and timing of any features or functionality described for Oracle’s products remains at the sole discretion of Oracle.

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Agenda

• Web Service Landscape • Oracle Web Service Infrastructure• Key Features• Tooling – Development and management• Demo• Q & A

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Web Service Landscape

Web Services : What is it?

WSDL

Web Service(JEE, SOA,

PL/SQL,.NET,C/C++,Legacy …)

Web ServiceClient

(JEE,SOA,.NET,PL/SQL …)

Points to description

DescribesService

FindsService

Invokes withXML Messages

SOAP/REST

UDDI Registry

Points to service

Where is Web Service today?• Standards : still evolving

– JAX-*– WS-*

• Adoption– Everybody understands what it is– Ubiquitously adopted and deployed– Popular for connecting platforms and applications– Starting to go beyond basics

• What are the pain points?– Security– Performance– Complexity– Interoperability

• Contention points– SOAP vs. REST– …

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Oracle Web Services

Oracle Fusion Middleware Technologies

Mission Statement

Interoperability

Standards Extensions

• World-class implementations

• JAX-*

• WS-*

• Value-added extensions

• Reliability

• Scalability

• Performance

• Availability

• Interoperability assurance• Oracle FMW products

• 3rd-party stacks

Oracle WS

Oracle Web Service Offering

DevelopmentDevelopment

OEPE

JDeveloper

PolicyPolicy

WLS policies

OWSM policies

ManagementManagement

WLS Console

EM

Oracle WSOracle WS

Infra WS

WLS WS

SOA WS

JEE WS

WC WS

ADF WS

Web Services Infrastructure

WebLogic Server

StatefulServiceJAX-WS

JMSJMSSOAPSOAP

HTTPHTTPSOAPSOAP

HTTPHTTPRESTREST

JAXBData BindingSwA Asynch

Service

WS-Security

WS-Addressing

WS-Reliable

MessagingMTOM Logging

AuditingWS-AT

Web Services Java Programming Model – Java EE

Declarative QoS (WS-Policy)

Web Services Management With EM/WLC/WLST

Web Services DevelopmentWith JDeveloper/OEPE

WSIF

DemoDevelop different type of web services (ADF/WLS) using Oracle Jdeveloper

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Key Features

• JAX-*

• SOAP1.* & WS-Policy

• WS-SecurityPolicy

• WS-ReliableMessaging

• WS-Addressing

• WS-SecureConversation

• MTOM

• WS-AT

• REST

• JAXB/SDO databinding

• WS-I BP/BSP/RSP

Standards

Features Overview

• Reliability

• Availability

• Scalability

• Performance

• Interoperability

• Database web service

• Spring web service

• Stateful web service

• Asynchronous web service

• Custom policies

Value-added

• Web service management

• Web service security configuration

• Policy attachment

• Policy management

• WLST-based web service management

• Test page

Management

Feature : Dual Programming Model

Protocol (SOAP/REST)

Server Side

Runtime System

JAX-WS/RPC API

Client side

Runtime System

Stub

Service Endpoint

WSDL Description

WSDL<->Java Mapping

Dispatch

Container

Service Client

Transport

Tie

JAX-WS/RPC API

JAX-WS vs JAX-RPC?

•SOAP 1.2 vs SOAP 1.1

•JAXB (data mapping model)

•MTOM (Message Transmission Optimization Mechanism)

•XML/HTTP - WSDL 1.1 specification defined an HTTP binding, which is a means by which you can send XML messages over HTTP without SOAP. JAX-RPC ignored the HTTP binding. JAX-WS adds support for it.

•WS-I's Basic Profiles JAX-RPC supports WS-I's Basic Profile (BP) version 1.0. JAX-WS supports BP 1.1.

•JAX-RPC maps to Java 1.4. JAX-WS maps to Java 5.0.

• EJB 3.0 vs EJB 2.1

•The handler model (SAAJ 1.3 specification)

Feature : Declarative QoS

• Can be configured using• EM• WLS Console• WLST• JDeveloper/OEPE

• QoS parameters set as Policies• Security• Reliable Messaging• Attachment• Addressing• Management

Web ServicesClient Management

JAX-WS JAX-WS Service Service EndpointEndpoint

JAX-WS JAX-WS ClientClient

TransportHTTP

SOAPMessage

SOAPMessage

SOAPMessage

SOAPMessage

Web ServicesServer Management

WS-Security

WS-RM

Auditing/Logging

WS-RM

Auditing/Logging

Auditing/Logging

WS-RM

WS-Security

Auditing/Logging

WS-RM

Response

Request

WS-WS-SecuritySecurity

WS-Security

Feature : End-to-end Policy Support• Policy Administration

– Browse policies available in policy store

– Attach/detach policies to services

– Monitor policy violations

• Policy management– Search for policies– Create new, create-like

policies– Generate client policies– Trace policy usages– Export/import policies– Support complete policy

life cycle management• Authoring• Versioning

Web Services With Policies

WSDLWith

Policies

Web Service(JEE, .NET,

SOA, PLSQL,Legacy …)

Web ServiceClient

(JEE, .NET,SOA, …)

Look upPolicy References

DescribeServicePolicies

Look upPolicy

References

Security/RM/…

SOAP

PolicyManager

&Store

Policy Enforcement

PolicyEnforcement

Feature : Web Service Security

Client WS-Security

JAX-WS JAX-WS Service Service EndpointEndpoint

JAX-WS JAX-WS ClientClient

TransportHTTP

SOAPMessage

SOAPMessage

SOAPMessage

SOAPMessage

Server WS-Security

Add AuthAdd AuthTokenTokenEncryptEncryptSignSign

DecryptDecryptCheckCheckSignatureSignature

Check Check SignatureSignatureDecryptDecryptCheck AuthCheck Auth

TokenToken

SignSignEncryptEncrypt

• Access Control(Aucn/Auzn)• Message Confidentiality• Message Integrity

• OOTB security policies• WLS policies• OWSM policies

Response

Request

Feature : WS-RM

ApplicationLayer

RM Source

ApplicationLayer

RM Destination

Msg

Ack

Sender Receiver

• Implicit support through policy• Interoperable• Scalable & clusterable

• Durable & recoverable via persistence store• Reliable messaging for synch/asynch MEP’s• Reliable conversation over multiple invocations

Feature : Consolidated Management

• Integrated with FMW Admin tools– EM– WLS Admin Console– WLST

• Management – Service configuration

• Lookup• Update

• Management – Policy

• Attachment/detachment• Enablement/disablement• Life cycle management• Parameter configuration

– Runtime activity monitoring• Performance metrics• Policy violation metrics

Feature : REST

JAX-WS HTTPBinding JAX-RS (JSR-311)

@WebServiceProvider( targetNamespace="http://example.org",

serviceName = "HelloRS")

@BindingType(value = HTTPBinding.HTTP_BINDING)

public class HelloRS implements Provider<Source> {

public Source invoke(Source source) {

return createSource(“Hello World”); }

}

@Path("/helloworld")

public class HelloRS {

@GET

@Produces("text/plain")

public String getClichedMessage() {

return "Hello World";

}

}

Feature : Database Web Services

XML Parser

JAX-RPCServlet

Decoding

Encoding

Oracle WebLogic Web Service

SOAP

SOAP

SOAP Libraries

PublisherGenerated

ArtifactsSQL/Query

SQL/DML

XML

PL/SQL

JDBC

JSP

Feature : Asynchronous Web Service

Synchronous MEP•Common use cases

•Request/response MEP over HTTP•Short-running operations•Real-time processing

•Pain points•Blocking•Indefinite waiting•Timeout

Asynchronous MEP•Common use cases

•Two one-way MEP over HTTP•Long-running operations•Delayed or batch processing

•Benefits•Better suit real-world business model •Provide richer messaging patterns beyond request/reply•Thread/JMS-based responder

Feature : Stateful Web Service

• Client to remain in a conversation over consecutive requests/responses

• Useful for building shopping cart type applications using web services

• Container to control message dispatching to service endpoint

• “Pinning” service endpoint instance

• Storing attributes in HTTP Session

client server

GetShoppingCart (new session)

ShoppingCart + SessionID(#1)

addItem + SessionID(#1)

GetShoppingCart(new session)

ShoppingCart + SessionID(#2)

Response + SessionID(#1)

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Tooling – Development and management

Feature : Development Tools• WLS web service Ant commands

– JAX-RPC/WS

• JDeveloper– JAX-RPC/WS & SOA– WSDL editor– HTTP Analyzer

• HTTPS• WS-*

– DBWS– JAX-RS

• OEPE– JAX-WS– WSDL editor– JAX-WS/JAXB custom binding file editor

DemoWeb service development and management

Consuming web services using web services client

• JSE / J2EE client• .Net client (Platform independence)• SOA• ADF DC

Feature : Web Service Testing

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Summary

Web Services Infrastructure

WebLogic Server

StatefulServiceJAX-WS

JMSJMSSOAPSOAP

HTTPHTTPSOAPSOAP

HTTPHTTPRESTREST

JAXBData BindingSwA Asynch

Service

WS-Security

WS-Addressing

WS-Reliable

MessagingMTOM Logging

AuditingWS-AT

Web Services Java Programming Model – Java EE

Declarative QoS (WS-Policy)

Web Services Management With EM/WLC/WLST

Web Services DevelopmentWith JDeveloper/OEPE

WSIF

Questions & Answers