Oracle Service Bus (OSB) for the Busy IT Professonial

ORACLE Service Bus 11g For the Busy IT Professional DOAG2010

munz & more Dr. Frank Munz

November 2010

INTRODCUTION getting started

Agenda

1.  Introduction 2.  Service Bus Positioning 3.  Core OSB Features, Development 4.  Monitoring, Security and Clustering

•  Frank Munz •  Research in supercomputing and medical imaging •  Worked for and with TIBCO, BEA and Oracle •  Founded munz & more in 2006 •  Focus Oracle middleware …

Who is this guy?

munz & more http://www.munzanmdore.com

SERVICE ORIENTED ARCHITECTURE?

service bus positioning

Interwoven silos with point to point integration

The Enemy

Portal RichClient

WebApp

Fraud Billing Network CRM

web service? -‐>

General Questions

Where is your business logic ? What if you need to change it? How many systems require changes if one system changes? Do Web Services help?

-> tight coupling L

Why not use e.g. EJBs then?

Similar situation for EJBs: •  Java only •  Changes in interface require new stubs -> changes in client jar file

Enterprise Application Integration (EAI) EAI tries to solve the integration problem Examples of EAI System are: •  BEA Weblogic Integration (=WLI, discontinued) •  TIBCO Business Works •  Vitria •  WebMethods

EAI Characteristics

•  Addresses the integration problem -> Supports plenty of technical protocols •  You need to DEPLOY the solution (EAR / JVM) •  Does NOT support real business processes -> Technical level, NOT business level -> No long running processes (e.g. 10 years?) -> Not good in versioning

EAI reduces complexity from O(n*n) to O(n): One change per system changed.

Reduced Complexity

EAI -‐>OSB

Portal RichClient WebApp

Fraud FTP

Billing JMS

Network EJB

CRM JAXWS

Business Process Management (BPM) BPM deals with business workflows Ideally: what you design is executable -> Visio templates do not qualify as BPM Examples of BPM Software: •  Oracle BPM = Aqualogic BPM = Fuego •  TIBCO IProcess & TIBCO InConcert

BPM Characteristics

•  Business architect draws executable workflow that makes sense for business -> business logic •  Human interaction •  Long running processes (e.g. 2 yearly vehicle inspection stickers, TÜV) •  Versioning of running processes

Service Bus

•  Similar to EAI (same protocols) but configuration driven •  Service Bus is stateless •  Often replaces EAI: Weblogic Integration (=EAI) is obsolete now •  You design message flows on a technical level

Service Bus

-> Service Virtualization Layer

Drag and Drop Programming

BPM, EAI and ESB: They all have executable, graphical flow diagrams.

Why OSB is not BPM nor EAI

… not a BPM system: -> neither long running nor stateful nor versioning … more then an EAI system: -> configuration driven, registry / repository integration, SOA focused and better monitoring with SLAs. OSB typically does NOT host the services

SOA Definition

"Service-Oriented Architecture is an IT strategy that organizes the discrete functions contained in enterprise applications into interoperable, standards-based services that can be combined and reused quickly to meet business needs."

What is SOA?

SOA = BPM + ESB + X

so what is X? Repository, Registry, Governance, … and what happened with EAI? often replaced by ESB

ORACLE SERVICE BUS OVERVIEW

basic features & architecture

Oracle Service Bus OSB 10gR3

•  OSB was BEA Aqualogic Service Bus (ALSB) •  ALSB based on code from Weblogic Integration (EAI) •  Key product of the BEA acquisition •  Integrates with UDDI V3 registry e.g. Oracle Enterprise Registry

Unified RunJme

Policy Manager

Oracle Service Bus

Common JCA-based connectivity infrastructure

Web-‐based console

Mediator

Oracle WLS

WLIntegraJon WLI

SQL SAP etc.

MQSeries ALDataServicesPlaPorm ALDSP

SOAP, WS JMS,RMI

DSP, SOAP JPD, SOAP

SOAP, (s)Tp, file

XQuery MQ

Oracle Tuxedo

Business Rules Human Workflow BPEL/BPMN

Eclipse / JDeveloper

Service Bus Functionality Overview I

•  Loose coupling •  Location Transparency •  Dynamic Routing •  Schema Transformation •  Protocol mix and match

Service Bus Functionality Overview II

•  Service Aggregation •  Load balancing, Clustering for Availability •  Security •  Monitoring •  Configuration driven

Loose Coupling / Mediation

1.  Clients talk to service bus (NOT directly to service implementation)

2.  OSB intercepts call = Service Mediation 3.  OSB calls service implementation OSB acts as "service virtualization layer" OSB can adapt/change message in step 2.

Proxy and Business Service

Oracle Service Bus

ProxyServiceB BusinessServiceY Client2 ServiceImpl2

BusinessServiceX ProxyServiceA ServiceImpl1

ServiceImpl1

Client1

Location Transparency

OSB uses Business Services Business Service = How to talk to service implementation This configuration can by changed anytime.

Transport and Binding Layer

Oracle Service Bus

ProxyServiceB BusinessServiceY Client2 ServiceImpl2

BusinessServiceX ProxyServiceA ServiceImpl1

ServiceImpl1

Client1

Transport

Context Variables

logical variable Purpose $header SOAP header for SOAP

Else: empty <soap:Header/>

$body SOAP body for SOAP Else: <soap:Body> with enJre payload

$attachements SOAP a`achements

$fault typed error informaJon

$inbound service, transport and security informaJon of inbound protocol

$outbound outbound protocol

$operation current operaJon

Variables are filled automatically

Message Flow in Proxy

Pipeline Stage Action Request path Response path Routing Node Route Node

A A A A A

A request response

Overview Actions

Flow Control Message Processing Routing

Log Action

Logs Xquery expression with annotation text and severity level to stdout. OSB console:

Dynamic Routing

Routing based on runtime conditions: •  Outcome of call to another service •  Logical expression •  Content of message body •  Content of transport header

Schema Transformation

•  XSD schema -> XSD schema •  binary (MFL) -> XSD schema •  XQuery or XSLT Example: Transform SAP address format to company-wide address format. Slide #35 (c) 2009/2010 Dr. Frank Munz / munz & more (Event:DOAG Nürnberg 11/2010)

Eclipse: XQuery Mapper

Xquery Join

for $priceRequest in $priceQuote1/ns2:priceRequests/ns2:priceRequest, $availRequest in $availRequest1

where data($priceRequest/ns2:widgetId) = data($availRequest/ns0:widgetId)

return <quoteResponse> <unitPrice>

{data($priceRequest/ns2:price)} </unitPrice>

<requestedQuanity> {data($availRequest/ns0:requestedQuanity)}

</requestedQuanity> </quoteResponse> }

Protocol Adaption

Oracle Service Bus

ProxyServiceB BusinessServiceY file File

BusinessServiceX ProxyServiceA email

Tuxedo

JMS Endpoint URI

OSB Admin Interfaces

•  Prior to version 3 only web based GUI •  Web based GUI for configuration based runtime changes, monitoring and management. No deployment necessary! •  WLS admin console for underlying configuration •  Eclipsed based development started with OSB 3.0 -> different development process

OSB Console

http://host:port/sbconsole used for: Operations Development Monitoring Search Import / Export Testing

Eclipse Console

MONITORING what is happening inside?

Questions addressed

How long does it take to execute this service on average? Send me an alert if takes 5 times longer. What was the longest execution time ever? How often is the login service on average called during 10 minutes?

Server Health

Click on Server Snapshot for per server view

Service Health

•  Overview -> click Name for details •  Select services with error

Detail: Service Metrics

Operation Metrics

Good result for jitterAndMem implementation: (errors are provoked with illegal test data)

Detail: Action Metrics

SLA Conditions

Depend on type count vs. min/max/avg Conditions can be combined

Reporting Console

Search for reports via key Purge all reports or range asynchronously

SECURITY inbound, outbound, authorized & single signed on

2 Scenarios...

Web Services Security Pass-Through: •  Proxy ignores WS-Security header, payload encrypted •  OSB forwards message to service implementation

Active intermediary: •  Security header examined •  Encrypted messages get decrypted at proxy service

ProxyService BusinessService Client ServiceImpl

Message Level Security

Based on WS-Security Standards Use WS-Policy assertion to request message level security for proxy service •  Authentication •  Integrity •  Confidentiality Example: Secure credit card details only

Transport Level Security

Protocols like http, ftp, jms over SSL Easier to configure Endpoint to endpoint only -> messages are not encrypted in between

Service Impl

SAML and WLS / OSB

SAML Pass-Through = •  OSB = passive intermediary

•  OSB forwards SAML token to service impl.

Active intermediary

Oracle Service Bus

AuthenJcator SAML

CredenJal Mapper

Client SAML IdenJty Asserter

CLUSTERING OSB availability, load balancing and throttling

Oracle Service Bus Cluster

Managed Server1

Managed Server2

WLS Cluster

Distributed OSB Cluster

ProxyService BusinessService ServiceA

BusinessService ProxyService ServiceA

ServiceA

Load Balancer

Clients Clients Clients

Throttle

Limit number of concurrent messages to business service. Exceeding messages put in non-pers. queue. Queue full or expiration drops messages with error message

OSB 11G new version

New in OSB 11g

•  WLS 10.3.3 installation then OSB 11g with Oracle Unified Installer •  Same MW_HOME as SOA Suite •  Coherence result cache: One single cache for all business services •  JCA Adapter from SOA suite 11g supported

New in OSB 11g

•  Message flow starts own JTA TX •  JEJB = native EJB inbound Proxy service exposed as stateless session bean •  EJB 3 supported (finally…) •  SOA-DIRECT protocol for SOA suite interaction •  Multiple email endpoints for load balancing

Questions?

Middleware and Cloud Computing Book Published!

Oracle WebLogic 12c Book

… more ?

Win a copy of the book! http://www.munzandmore.com/blog Come to my Cloud Computing Talk:

munz & more Training and Consulting •  WebLogic Admin Training 9 – 12c •  WebLogic Monitoring and Tuning •  Oracle Service Bus Training •  Cloud Training (AWS, Google, Oracle Cloud)

Oracle Service Bus (OSB) for the Busy IT Professonial

doag nrnberg

weblogic integration

munz amp

service bus

service implementation

technical

load balancing

eai system

Technology

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