© 2002 progress software corporation1 simplify your business

© 2002 Progress Software Corporation1Sim

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D I S C L A I M E R

““Products Under Development”Products Under Development”Technical PreviewTechnical Preview

This talk includes information about potential future products and/or product enhancements.

What I am going to say reflects our current thinking, but some information contained herein is preliminary and subject to change. Any future products we ultimately deliver may be materially different from what is described here.

In other words - you can’t believe everything I’m going to say.

The Web Services The Web Services Development ToolkitDevelopment Toolkit

J. Espen [email protected] Services Manager, Norway


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AgendaAgenda

Architecture Transformation

Introduction OpenEdge, Web Services

WSTK Architecture

Developing & Deployment with the WSTK

Connection Management

Open Client Object Model

Demo.....

That's All Folks…


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ProgressProgress OpenEdge OpenEdge : : EnkeltEnkelt, , IntegrertIntegrert, , ÅpentÅpent

Progress Dynamics™

SonicMQ • SonicXQ

Web Services Dev. Toolkit

AppServer

WebSpeed Transaction Server

RDBMSDataServers

WebClient

WebSpeed

Open ClientGUI/ChUI

Progress4GL

ActuateCorVu

Report BuilderQuery/Results

Fa

tho

mT

M

Pro

Vis

ion

TM

Web

Sp

eed

W

ork

sho

p

Applications


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Architecture TransformationArchitecture Transformation

ClientServerClientServer

HostCentricHost

Centric

DistributedDistributed

AppServer

Client

Architecture Evolution

Application development and application architectures have had an interesting and sometimes painful evolution

Application development and application architectures have had an interesting and sometimes painful evolution

Process-OrientedApplications


Business Process

Business Process

Business Process

• Service-Oriented Architecture (SOA) is the next-generation interoperation methodology

• Technologies such as Web services are a means to that end

• Service-Oriented Architecture (SOA) is the next-generation interoperation methodology

• Technologies such as Web services are a means to that end


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Development TransformationDevelopment Transformation

ClientCentricClient

CentricHost

CentricHost

Centric

DistributedDistributed

AppServer

Client

Interface Drives the ProcessProcess Drives the Interface

• Process-centric applications require new methods of development

• Processes (procedures) are services to and from any client, server, or application

• Process-centric applications require new methods of development

• Processes (procedures) are services to and from any client, server, or application

• Traditional application development is from “outside in”

• Integration and service orientation require process-centric logic

• Traditional application development is from “outside in”

• Integration and service orientation require process-centric logic



Business Process

Business Process

Business Process


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The ApplicationsThe Applications


Business Process

Business Process

Business Process

Application ModuleToo Large

Data Update LogicToo Small

Business ProcessJust Right

Coarse-grained, loosely-coupled business processes


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An Application RequiresAn Application Requires

3 Strategic Elements

ESBEnabled

User Interface Freedom


Logic Platform

Process-centric design


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User Interface Freedom• to deploy the interface of choice• to construct or define user interfaces• to respond to competitive pressures• to operate without a user interface!

User Interface FreedomUser Interface Freedom

Open Client Tools

.NET Integration

Web Services

Progress ChUI, GUI, Web

Access to applications


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• Support for Web Services • Support for SonicXQ• Fast Development of New Services

ESB EnabledESB Enabled

Web Services ToolKit (WSTK)

XML to 4GL / XML to Storage

4GL to Web Services Integration

XQ Service Container

OpenEdgeOpenEdgeApplicationApplication

J2EE J2EE ApplicationApplication

.NET .NET ApplicationApplication

Dynamics for SOA

Application components as services


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Logic Platform

Business Logic PlatformBusiness Logic Platform

Progress 4GL

Business Logic Platform

Dynamic Business Logic

Business Process Logic

Transaction Logic

Data Logic

Progress Dynamics

Faster assembly of new functionality


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An Application RequiresAn Application Requires

3 Strategic Elements

ESBEnabled



Logic Platform

Process-centric design


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AgendaAgenda

Introduction OpenEdge, Web Services

WSTK Architecture




Demo.....

That's All Folks…


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OpenEdge IntegrationOpenEdge Integration

SonicMQ & SonicXQ

Web Services Development Toolkit

“Using Web services will help reduce costs and improve the efficiency of IT projects by 30 percent.”

Daryl Plummer

Sr. VP, Gartner Group


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One definition of a Web ServiceOne definition of a Web Service

An application that can be accessed over the Web or any network from another application using RPC style calls encoded

using SOAP over HTTP where the interface can be described using WSDL.

“Web Services is the

telephone for applications.”

How is the weather in Bedford?


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Web ServicesWeb Services

Service Producer (Server)– Develops, publishes & deploys the Web Service

Service Registry – Directory of Web Services

Service Consumer (Client)– Locates & uses Web Services

“Logical Model”


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Web Services StandardsWeb Services Standards

HTTP Hypertext Transfer Protocol– Protocol for sending data over the Web

XML eXtensible Markup Language– Standard way to represent & exchange data

SOAP Simple Object Access Protocol– XML based messaging protocol (eg. RPCs)– An extensible message format

WSDL Web Service Description Language– XML based language– A Service Description language

UDDI– A standard for Web Service registries – A way to discover Web Service providers


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XML ExampleXML Example

<?xml version="1.0" encoding="UTF-8"?><Customer type=“partner”>

<Custnum>5</Custnum><Name>Go Fishing Ltd</Name><Address2>83 Ponders End Rd</Address2><City>Harrow</City><State>Middlesex</State><PostalCode>HA8 3LU</PostalCode><Balance>14235.14</Balance>

</Customer>


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SOAPSOAP

SOAP Envelope SOAP Header

– Mechanism for app-specific extensions

SOAP Body– Main business

content– Usually uses SOAP

encoding

SOAP Envelope

SOAP Header

SOAP Body

App-SpecificBody Elements

App-SpecificHeader Elements

Simple Object Access Protocol


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<?xml version="1.0" encoding="utf-8"?>

<SOAP-ENV:Envelope

SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"

xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"

xmlns:xsd="http://www.w3.org/2001/XMLSchema"

xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">

<SOAP-ENV:Body>

<getQuote xmlns="http://some-site.com">

<symbol xsi:type="xsd:string">qadi</symbol>

</getQuote>

</SOAP-ENV:Body>

</SOAP-ENV:Envelope>

SOAP ExampleSOAP ExampleSOAP ExampleSOAP ExampleStock Quote Web Service – Request Message


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<?xml version="1.0" encoding="utf-8"?>

<SOAP-ENV:Envelope

SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"

xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"

xmlns:xsd="http://www.w3.org/2001/XMLSchema"

xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">

<SOAP-ENV:Body>

<getQuoteResponse "xmlns="http://www.some-site.com/">

<getQuoteResult xsi:type="xsd:float">99.8503</getQuoteResult>

</getQuoteResponse>

</SOAP-ENV:Body>

</SOAP-ENV:Envelope>

SOAP ExampleSOAP ExampleSOAP ExampleSOAP ExampleStock Quote Web Service – Reply Message


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WSDLWSDL

What can it do? How do I invoke it? Where does it reside?

Web Service Description Language


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WSDLWSDL

Specifies interface– Business methods that can be invoked

(“operations”)

– Message structure for each method Data fields, types

– Bindings for the operations eg. SOAP over HTTP

Identifies network address of Web Service

Web Service Description Language


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Machine B

CreditChk

UDDI Registry

GetWeather

2. Web service made available to public, by publishing its WSDL to a UDDI registry

Web ServicesWeb Services

How is the weather in Bedford?Machine A

GetWeatherWS

GetWeatherWS

1. Web service is built and deployed, ready to be published.

Machine C

Client

3. Client searches for available weather services

4. Client finds access info about GetWeather

5. Client makes info request directly to service

6. Service sends result back to client


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AgendaAgenda

Web Services

WSTK Architecture




That's All Folks…


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Web Services Toolkit RoadmapWeb Services Toolkit Roadmap

Phase 1– Web Service-enabled AppServer

– Web Service Client is another Open Client

Phase 2– 4GL to a Web Service

– It’s just like calling another AppServer, e.g.

RUN foo on SERVER web-service-hdl.


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Web Services ToolkitWeb Services Toolkit

Generate a WSDL file for an AppServer-based application based on the Open Client programming model

Runtime infrastructure so that an AppServer can be accessed as a Web Service

Phase 1


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Web Services Toolkit ComponentsWeb Services Toolkit Components

Web Services Adapter (WSA) WSTK enhanced ProxyGen WSTK enhanced Progress Explorer


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Web Services Toolkit Web Services Toolkit Runtime ArchitectureRuntime Architecture

HT

TP

L

iste

ner

Web

Ser

vice

s A

dap

ter

Web Server (JSE)

AppServers

WSDLFiles

WSADs

ubroker.properties

POST(Soap)Web

Service Client Response(Soap)


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Web Services AdapterWeb Services Adapter

Progress provided Java Servlet Can use any Web Server and JSE that

supports the JSE V2.2 specification Manages all communications between a

Web Service client and an AppServer Converts a SOAP request to an AppServer

request using a Web Service Application descriptor (WSAD)

One WSAD deployed for each application Configured using Progress Explorer


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WSADWSAD

One WSAD per application identified by XML namespace

Conceptually similar to Open Client proxies

Includes:– Application service to use– 4GL procedure to call for each SOAP

request– Parameter and datatype information

Deployed to a WSA and maintained persistently


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AgendaAgenda

Web Services

WSTK Architecture




That's All Folks…


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Development Site

Deployment Site

WSM

ProxyGen

4GL

ProgressExplorer

WSM

Web Server Site

WSM

WSDLs

Web Services Adapter

WSADs

HTTP Listener

Soa

p

Req

ues

t/R

esp

onse

GE

T W

SD

L

? ?

Deploying an ApplicationDeploying an ApplicationDeploying an ApplicationDeploying an Application


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ProxyGen

Development Site

Business logic

Proxies

4GL .r files

Java classes

ActiveX

Web Services Mapping File


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Development SiteDevelopment Site

Using ProxyGen – Create ProxyObjects

AppObject (One) SubAppObjects (Optional – many) ProcObjects (Optional – many)

– Initiate generation of Web Service Mapping (WSM) file

– Specify whether application is session managed or session free – more on this later

Package the AppServer application for deployment including the WSM file

Step 1: Prepare Application For Deployment


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Web Server SiteWeb Server Site

Install JSE at Web Server as required Install Web Services Adapter (WSA) within

JSE Configure WSA by editing

ubroker.properties or using Progress Explorer– Log file– URL of WSA instance– Controlling NameServer

Step 2: Configure WSA for access


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Deployment SiteDeployment Site

Specify:– WSA instance to use– Location of WSM– WSDL Generation Info

Target namespace WSDL Encoding

– Application Service of corresponding AppServer Results in:

– WSM being sent to WSA instance along with WSDL generation info

– WSDL and WSAD being generated by WSA instance

– WSAD being loaded so application is available for access

Step 3: Run Progress Explorer to Deploy Application


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Web Services Communication ModelWeb Services Communication Model

Web Web Service Service ClientClient

BusinessBusinessLogicLogic

AppAppServersServers

Web Server

DatabaseDatabaseServerServer

.NETJavaPerl

WSADs

WS

AW

SA

HT

TP

Lis

ten

erH

TT

P L

iste

ne r

““ Op

en C

lien

t

Op

en C

lien

t

Ru

nt i

me ”

Ru

nt i

me”

WSDLs

HTTP PostHTTP Post

HTTP ResponseHTTP Response


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Web Services Web Services Communication Model, cont.Communication Model, cont.

Client sends a SOAP request to the WSA The WSA maps the request to a procedure

on the AppServer using the WSAD The WSA asks the AppServer to run the

procedure The WSA creates a SOAP response or

fault and sends it to the client

Remember - No Progress code on the client!!


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AgendaAgenda

Web Services

WSTK Architecture




That's All Folks…


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Connection ManagementConnection Management

Session Managed– State-aware

– State-reset

– Stateless Session Free

Specified via ProxyGen


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ApplicationApplicationServerServer


StatelessStatelessStatelessStateless

Application Application BrokerBroker

AppServer

WSAWSAWSAWSA

Web Web ServicesServices

ClientClientConnect

ConnectConnect


ClientClient


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AppServer

WSAWSAWSAWSA


ClientClient


ClientClientRUN PartRUN Part RUN Part

RUN cust

RUN cust

RUN cust

Integration


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AppServer

WSAWSAWSAWSA


ClientClient


ClientClient


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Session FreeSession FreeSession FreeSession Free


AppServer

WSAWSAWSAWSA


ClientClient


ClientClientRUN PartRUN Part RUN Part

RUN cust

RUN cust

RUN cust


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Session FreeSession FreeSession FreeSession Free


AppServer

WSAWSAWSAWSA


ClientClient


ClientClient


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AgendaAgenda

Web Services

WSTK Architecture

Deploying an Application with the WSTK



That's All Folks…


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Open Client Object ModelOpen Client Object Model

Object types:– ApplicationObjects (AppObjects)

– Sub-ApplicationObjects (Sub-AppObjects)

– ProcedureObjects (ProcObjects)

Objects are used to:– Provide access to the 4GL logic running on

the AppServer

– Provide runtime context (if necessary)

ApplicationApplicationObjectObject

ProcedureProcedureObjectObject

Sub-Sub-AppObjectAppObject


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AppServer Session ModelAppServer Session Model

Session Managed– Connection is established by the client– Connection is dedicated by the WSA to the

AppServer for that client– AppServers today follow this model (state-aware,

state-reset, stateless)

Session Free– No connection required– Pool of network resources in the WSA shared by all

clients– Web Services design center (state-free)


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Object Relationships at Object Relationships at Runtime: Session ManagedRuntime: Session Managed

Call Connect on AppObject first to establish connection

All objects share single connection

Context information must be managed by client

Connection maintained until all objects released






Method1Method1Method2Method2Method1Method1Method2Method2

MethodXMethodXMethodXMethodX

Proc1Proc1Proc2Proc2FuncXFuncX



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Object Relationships at Object Relationships at Runtime: Session FreeRuntime: Session Free

Simply call methods on the AppObject to run non-persistent procedures

No context information for AppObject

Warning: ProcObjects and Sub-AppObjects force connection and context management – Not recommended!






Method1Method1Method2Method2Method1Method1Method2Method2

MethodXMethodXMethodXMethodX




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A Look at ProxyGenA Look at ProxyGen

ProxyGen works the same for Web Services as it does for Java and ActiveX

Define the Objects and generate the proxy for the client (WSM/WSDL)

New deployment step required in Progress Explorer


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ProxyGen: Select 4GL ProceduresProxyGen: Select 4GL ProceduresSelect the 4GL

procedures for each object

Optionally customize the procedure definition


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ProxyGen: GenerateProxyGen: Generate

Select Web Services Client

Select Session Model


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ProxyGen: GenerateProxyGen: GenerateEnter initial

deployment information:

– Namespace– WSA URL– SOAP Action– Test WSDL

Generate the “proxy”


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Required Information forRequired Information for Web Services Generation Web Services Generation

Namespace– Unique identifier for the Web Service– Must be unique at the WSA instance

WSA URL– URL identifying the location of the WSA

SOAP Action– May be blank, client may need

Test WSDL– Supports a single style/use


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Generating the “Proxy”Generating the “Proxy”

Proxy Generation for Web Services– Uses the 4GL code to generate a Web Services

Mapping (WSM) file

– Optionally generates a Test WSDL file

Deployment Phase– Done in Progress Explorer or wsaman

– Converts the WSM file to a WSAD

– Deployer can change ProxyGen settings

– WSDL available through the WSAhttp://localhost:8080/wsa/wsa1/wsdl?targetURI=OrderService


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Web Services options – DeployWeb Services options – Deploy

View of the explorer with a deployed application.


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Web Services options – ImportWeb Services options – Import

Import screens will look very similar to the deploy screens


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SummarySummary

Web Service enabled AppServer based on Open Client model

Progress provides the technology you need so you can focus on your business and application requirements

Web Services coming to an application

near you soon

Web Services coming to an application

near you soon


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The Interface FreedomThe Interface Freedom

Business Process

loosely-coupled business processes


Business Process

Business Process

Business Process


Business Process

Business Process

Business Process

Progress, Sonic… .NET, Java…

Just Right for Web Services

ESB, Web Services


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© 2002 progress software corporation1 simplify your business

Documents

progress software corporation

web services support

services manager

interface of choice

application architectures

service orientation

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business processes