© 2007 ibm corporation international technical support organization ibm.com the power of one 2007...

© 2007 IBM Corporation

International Technical Support Organization

ibm.comthe power of one

2007 IBM System i5 아카데미

SOA 를 통한 System i 기존 자원의 전략 자원화

정예성IBM Rochester


ibm.com/redbooks International Technical Support Organization

목차SOA 개요 및 Web services 와의 관계

System i 자원의 Web services 가용화

Web services 툴로서의 WebSphere Development Studio Client (WDSC)

DB2 UDB for i5/OS 자원의 Web services 가용화

i5/OS 프로그램 자원의 Web services 가용화

PHP 어플리케이션 자원의 Web services 가용화



SOA 개요

Web Service

Business Logic

Service Provider

Service Client



SOA 와 Web Services 의 관계



Web Services 개요Web services

웹을 통하여 시동되는 어플리케이션SOA 의 임플리멘테이션Business logic 만을 제공 – 유저 인터페이스는 없음Self-containedSelf-describing StatelessSynchronous/asynchronous

인터넷

웹 어플리케이션

Web Service 기타 어플리케이션

기타 어플리케이션



Web Services 의 종류Business 정보 : 신속히 변화하는 데이타베이스를 접근

주식 시세환율 시세주소록지리 정보

Business 프로세스 통합예약 시스템신용 조회결제 시스템대출 서비스제품 카탈로그



Web Service – 새로운 혁신자 , TransformerTCP/IP

접속방식의 혁신Web 및 HTTP

프로토콜의 혁신Browser 및 HTML

유저 인터페이스의 혁신XML

데이타 및 메세지 교환방식의 혁신Web Service

어플리케이션 접속방식의 혁신



Web Services 기술적 개요



Web Services 클라이언트 및 서비스 Web services 의 목표는 인터오퍼러빌리티

새로운 인터오퍼러빌리티 표준플랫폼 및 프로그래밍 언어에 대한 독립성

Microsoft .Net 클라이언트

J2EE 클라이언트

JSP 클라이언트 Java 웹 서비스

RPG 웹 서비스

Microsoft .Net 웹 서비스

SQL 웹 서비스RPG 클라이언트

Web Service 클라이언트 예 Web Service 서비스 예



Web Services 테크놀로지 스택

조회 (Discovery) UDDI, WSIL조회 (Discovery) UDDI, WSIL

기술 ( 記述 : Description) WSDL기술 ( 記述 : Description) WSDL

XML 메시징 SOAPXML 메시징 SOAP

Transport HTTP, JMS, FTP, SMTPTransport HTTP, JMS, FTP, SMTP

서비스 provider 와 requestor 와의 컨트랙트 내역은

WSDL 에 기술됨 .



Web services : Transport 레이어

Broker

Provider

SOAP over

HTTP

Requestor

SOAP over

HTTPSOAP over

HTTP

HTTP 간결하면서도 안정적이며 전세계에 걸쳐 사용됨 방화벽에 의해 제지되지 않음 현재 , SOAP transport 에 가장 일반적인 형태 Synchronous 한 성격 만약 asynchronous 한 트랜잭션 지원이 요구될 경우는 JMS 를 고려하여야 함

기타 FTP, SMTP 등이 사용될 수 있음



Web services : 기술 ( 記述 ) 레이어 WSDL: Web Services Definition Language

XML schema (vocabulary) 를 통하여 Web service 인터페이스를 기술

Methods Parameters 서비스 인보크하는 방법 기술

클라이언트 어플리케이션은 WDSL 을 이용하여 클라이언트 proxy 를 생성함

Web service 클라이언트 proxy 에는 서비스 인보크를 위한 코드가 들어있음

Broker

Provider

Publish WSDLLook up WSDL

Use WSDL to bind/invoke

2

3

1

Requestor



Web services : 기술 ( 記述 ) 레이어 WSDL 예...<element name="sayHello"> <complexType> <sequence> <element name="name" nillable="true" type="xsd:string"/> </sequence> </complexType> </element> <element name="sayHelloResponse"> <complexType> <sequence> <element name="sayHelloReturn" nillable="true" type="xsd:string"/> </sequence> </complexType> </element> </schema> </wsdl:types>...<wsdl:service name="GreetingsBeanService"> <wsdl:port binding="intf:GreetingsBeanSoapBinding" name="GreetingsBean"> <wsdlsoap:address location="http://localhost:9080/WebServiceDemo/services/GreetingsBean"/> </wsdl:port></wsdl:service>



Web services : XML 메시징 레이어 SOAP 는 XML 의 일종 SOAP 메시지에는 Remote Procedure Call (RPC) 혹은 XML

document 가 포함되어 있음

Web service Client

Web service SOAP ServerInternet

1 2 3

6 5 4

1. Web service client 는 SOAP message 를 생성하여 전송 .2. SOAP server 는 SOAP message 를 기다리고 있음 . SOAP server 는 Application Server( 예 :

WebSphere Application Server).3. SOAP server 는 SOAP message 를 처리하여 구체적인 request 를 Web service 에 넘겨줌 .4. Web service 는 해당 method 를 작동시켜 얻어진 result 를 SOAP server 에게 넘겨줌 .5. SOAP server 는 result 를 Web service client 에게 넘겨줌 .6. Web service client 가 SOAP response 를 parse 함 .



Web services : Discovery, 즉 조회 및 발견UDDI: Universal Description, Discovery and Integration

Web Services 의 등록부 회사 및 서비스 유형에 따라 분류됨 Private 혹은 public 형태로 존재함 현재 몇몇 public UDDI registries 가 활동중

IBM UDDI Business Registry: https://uddi.ibm.com/ubr/registry.html

IBM UDDI Business Test Registry: https://uddi.ibm.com/testregistry/registry.html



System i 자원의 Web services 가용화



System i 자원의 Web services 가용화Web service 화가 가능한 System i 자원의 종류 :

i5/OS 명령어 , data queues, data areas, batch jobs, 등Callable programs 및 service programs i5/OS 인터렉티브 프로그램 DB2 UDB tables, views, stored procedures, 등WebSphere MQ, Domino, 등의 미들웨어



Web services 를 위한 기본 요건명확히 정의된 input parameter(s)명확히 정의된 output 데이타명확히 정의된 transactional boundariesThread safe자원에 대한 read/write/use access 권한 Error recoverySOAP server connectors 및 runtime integration

Java based ( 예 : WebSphere Application Server)



환경 조건i5/OS 환경

Qshell, 5722SS1 Option 30Host Servers, 5722SS1 Option 12 IBM Developer Kit for Java, 5722JV1 Options 5 and 6 IBM Toolbox for Java, 5722JC15722WDS Option 31 Compiler - ILE RPG IV5722WDS Option 34 Compiler - RPG/400®가장 최근의 Group PTFs:

Cumulative Group PTF SF99540WebSphere Group PTF SF99312

Host Servers 가 active 한 상태일 것 :STRHOSTSVR *ALL



환경 조건클라이언트 환경

WebSphere Development Studio Client for System i V6.0.1.Firefox 1.0.7 이상 ( 혹은 유사한 인터넷 브라우져 ).

디플로이먼트 환경WebSphere Application Server - Express, Base, 혹은 ND.RPG 어플리케이션 서버 .



Web services 툴로서의WebSphere Development Studio Client (WDSC)



WDSC 페키징

Eclipse Platform V3.2Eclipse Platform V3.2

IBM Rational Software Development PlatformIBM Rational Software Development Platform

WebSphere Development Studio Client 7.0

WebSphere Development Studio Client 7.0

Subset of RationalApplication Developer 7.0

Subset of RationalApplication Developer 7.0

Generic application development

System i extensions for application development

WebSphere Development Studio Client Advanced

Edition 7.0

WebSphere Development Studio Client Advanced

Edition 7.0

Rational Application Developer 7.0

Rational Application Developer 7.0

Java, HTML, Servlets, XML, JSP, JSF, Web services, Unit Test environment, database

Portal, EJB, J2EE, UML, Profiling

Application Diagram,Screen Designer

SSO, JCAWebFacing, HATS, RSE

Standard Edition Advanced Edition



RSE: Remote System Explorer



1988



1992CODECODE



2002…



WebSphere Development Studio Client

RSDP(Rational

Software Development Platform)

RSDP(Rational

Software Development Platform)

EclipseEclipse

WDSC

RWD

RADRSM

RMT

RFA

RSA More…

WDz



Eclipse User Interface – Perspective

에디터에디터

뷰뷰

뷰뷰뷰뷰

뷰뷰

다양한다양한퍼스펙티브퍼스펙티브

현재현재퍼스펙티브퍼스펙티브

다양한다양한뷰뷰



프라퍼티 뷰를 통하여 선택된 노드의 자세한

정보를 볼 수 있음

어플리케이션다이어그램

아웃라인뷰



어플리케이션 다이어그램 – 프라퍼티 뷰

서비스 프로그램의프라퍼티

서브루틴 , 혹은 프로시듀어의

프라퍼티



웨 어플리케이션 개발 툴WAS 6.1 지원

WAS 6.1 embedded 테스트 서버

새로운 JSF 컴포넌트

새로운 웹 다이어그램 에디터



웹 다이어그램 에디터



i5/OS DB2 UDB 자원의 Web Service 화



DB2 UDB 를 이용한 Web Services 특장점환경적인 특장점

가장 간편한 방법중의 하나Web services technology 의 초기 습득에 유리

어플리케이션 전체의 모더나이제이션이 용이치 않을 때모더나이제이션 하지 않고도 Web services 적용 가능

기존의 SQL 자원이 풍부할 때Stored procedures 자원이 풍부할 때

기술적인 특장점 : Runtime 제공DB2 XML Extender 이용하기Direct JDBC™ connection 이용하기



XML 예



DB2 XML Extender

Network

i5/ OS

DB2 UDB for iSeries

Document Type

Defi nition (DTD)

Data Access Definition

(DAD)

XML Schema Defi nition

(XSD)

DB2 XML Extender

Application

XML Document

XML DocumentXML

Documentlocal

XML Document



DB2 UDB 자원의 Web Service 화WORF 프레임워크 이용거의 아무런 코딩 없이 Web service 개발 가능WDSC 를 개발 툴로 이용

WORF(DADX processor)

WebSphere Application Server

DB2 UDB for i5/OS

DB2 XML Extender

Stored Procedures for

XML

User-defined functions for

XML

SQLstatements

Storedprocedures

calls

DAD andXML documents



DADX File 을 이용한 DB2 UDB 자원의 Web Service 화1 단계 : Dynamic Web Project 생성

2 단계 : DB2 connection 셋업

3 단계 : SQL statement 생성

4 단계 : DADX group 컨피규어

5 단계 : DADX file 생성

6 단계 : DADX file 을 바탕으로 Web service 생성

7 단계 : Web service 테스트



1 단계 : Dynamic Web Project 생성1. On WDSc, select

File New Project

2. In the pop-up window select Dynamic Web Project and click Next.

3. Enter a name for the project, such as db2dadxws in our example:



2 단계 : DB2 connection 셋업



3 단계 : SQL statement 생성



4 단계 : DADX group 컨피규어



5 단계 : DADX file 생성



5 단계 : DADX file 생성 - 예제<?xml version="1.0" encoding="UTF-8"?>

<dadx:DADX xmlns:dadx="http://schemas.ibm.com/db2/dxx/dadx"

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

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

xsi:schemaLocation="http://schemas.ibm.com/db2/dxx/dadx dadx.xsd">

.

.

</dadx:documentation>

<dadx:query>

<dadx:SQL_query>

<![CDATA[

SELECT * FROM FLGHT400.CUSTOMERS WHERE FLGHT400.CUSTOMERS.CUSTOMER_NAME LIKE :CustName

]]>

</dadx:SQL_query>

<dadx:parameter name="CustName" type="xsd:string"/>

</dadx:query>

</dadx:operation>

</dadx:DADX>



6 단계 : DADX file 을 바탕으로 Web service 생성



7 단계 : Web service 테스트



DADX File 을 이용한 DB2 UDB Web Service 디플로이먼트1 단계 : WSDL service address 를 해당 deployment server 에 맞도록 수정2 단계 : WAR/EAR file 을 export 한 뒤 , WebSphere Application Server for System i 에 설치3 단계 : 새로운 Web service 를 이용하여 새로운 어플리케이션을 개발하거나 기존의

어플리케이션을 리모델링



i5/OS 프로그램 자원의 Web Service 화



어플리케이션 및 데이타 모더나이제이션

RPG IV, ILE COBOL or ILE CL

Print

User Interface DB

LogicRPG III, COBOL/400 or CL/400

DB constraints

DB triggers

Stored ProceduresGraphical

InterfaceBrowser Interface

ILE Srvpgm

Java BeanJava Bean1. 컴파일러 업그레이드2. ILE 를 이용하여 코드의

모듈화 달성3. 비지니스 환경 변화에 따른

컴포넌트 대체 즉응성 성취



i5/OS 프로그램 자원의 Web Service 화IBM Toolbox for Java 를 활용기본 단계

WDSC 를 이용하여 JavaBean component 생성

Input parameters 및 output results 정의Connection 생성적절한 method(s) 가동Toolbox 에 이미 다양한 JavaBeans 가

만들어져 있음인터렉티브 웹 어플리케이션에

JavaBean 이용WDSc JavaBean Web service wizard 를

이용하여 : 서버 어플리케이션 생성 클라이언트 테스트 어플리케이션

생성어플리케이션의 테스트 , 수정 , 및

디플로이



i5/OS 프로그램 자원의 Web Service 화

JAX-RPC Proxy

Web service client application

WS

DL

Network

SOAP over HTTP

WAS(SOAP Server)

Web service application

*PGM, *SRVPGM

Program Call

JavaBeanWeb and

Java API's

WSDLMappings

Service E

ndpoint

PCML Document

WDSC Web service wizard 가 우리를 대신하여

만들어주는 모듈



PHP 어플리케이션의 Web Service 화



PHP 어플리케이션의 Web Service 화 PHP language (www.php.net)

JavaServer Pages 와 매우 유사 HTML 에 대한 다양한 기능 두가지의 실행 모드 :

CGI Run as Apache plug-in

데이타 센트릭 , 비교적 단순한 웹 어플리케이션 개발에 유리

LinuxWindows

MySQLSQLite

PostgreSQL

PHPPython

Perl

Apache

L = Linux A = Apache web server M = MySQL P = PHP | Perl | Python

PHP 란 무엇인가 ?



PHP 어플리케이션의 Web Service 화

<?php class QuoteService { private $quotes = array("ibm" => 87.65, "wmt" => 45.67); function getQuote($symbol) { if (isset($this->quotes[$symbol])) { return $this->quotes[$symbol]; } else { throw new SoapFault("Server","Unknown Symbol '$symbol'."); } } } $server = new SoapServer("stockquote.wsdl"); $server->setClass("QuoteService"); $server->handle(); ?>________________________________________________________<?php $client = new SoapClient("stockquote.wsdl"); print($client->getQuote("ibm")); ?> ________________________________________________________87.65

PHP Web service provider 및 requester 예제



참고자료Redbooks

http://www.redbooks.ibm.com WebSphere Version 6 Web Services Handbook Development and Deployment, SG24-6461-00 Rational Application Developer V6 Programming Guide, SG24-6449-00 Building SOA-based Solutions for System i, SG24-7284-00

WebSphere Application Server for iSeries Information Center http://publib.boulder.ibm.com/infocenter/wsdoc400/index.jsp

IBM developerWorks http://www.ibm.com/developerworks/webserviceshttp://www-128.ibm.com/developerworks/db2/zones/webservices/http://www.ibm.com/developerworks/rational/products/egl/http://www-128.ibm.com/developerworks/lotus/library/nd7-webservices/http://www.ibm.com/developerworks/opensource/top-projects/php.html



Trademarks & Disclaimers8 IBM Corporation 1994-2003. All rights reserved.References in this document to IBM products or services do not imply that IBM intends to make them available in every country.The following terms are trademarks or registered trademarks of International Business Machines Corporation in the United States, other countries, or both:

Lotus, Freelance Graphics, and Word Pro are registered trademarks of Lotus Development Corporation and/or IBM Corporation.Domino is a trademark of Lotus Development Corporation and/or IBM Corporation.

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Information is provided "AS IS" without warranty of any kind.

All customer examples described are presented as illustrations of how those customers have used IBM products and the results they may have achieved. Actual environmental costs and performance characteristics may vary by customer.

Information in this presentation concerning non-IBM products was obtained from a supplier of these products, published announcement material, or other publicly available sources and does not constitute an endorsement of such products by IBM. Sources for non-IBM list prices and performance numbers are taken from publicly available information, including vendor announcements and vendor worldwide homepages. IBM has not tested these products and cannot confirm the accuracy of performance, capability, or any other claims related to non-IBM products. Questions on the capability of non-IBM products should be addressed to the supplier of those products.

All statements regarding IBM future direction and intent are subject to change or withdrawal without notice, and represent goals and objectives only. Contact your local IBM office or IBM authorized reseller for the full text of the specific Statement of Direction.

Some information in this presentation addresses anticipated future capabilities. Such information is not intended as a definitive statement of a commitment to specific levels of performance, function or delivery schedules with respect to any future products. Such commitments are only made in IBM product announcements. The information is presented here to communicate IBM's current investment and development activities as a good faith effort to help with our customers' future planning.

Performance is based on measurements and projections using standard IBM benchmarks in a controlled environment. The actual throughput or performance that any user will experience will vary depending upon considerations such as the amount of multiprogramming in the user's job stream, the I/O configuration, the storage configuration, and the workload processed. Therefore, no assurance can be given that an individual user will achieve throughput or performance improvements equivalent to the ratios stated here.

Photographs shown are of engineering prototypes. Changes may be incorporated in production models.

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