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

Agenda
1. 
2. 
3. 
4. 

Introduction
Service Bus Positioning
Core OSB Features, Development
Monitoring, Security and Clustering

(c) 2009/2010 Dr. Frank Munz / munz & more (Event:DOAG Nürnberg 11/2010)

Slide #3

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

Slide #4

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

service bus positioning

SERVICE
ORIENTED

The Enemy
Interwoven silos with point to point integration
RichClient

Portal

WebApp

web
service?
-‐>

Fraud

Billing


Network

CRM

Slide #7

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

Slide #8

Why not use e.g. EJBs then?
Similar situation for EJBs:
•  Java only
•  Changes in interface require new stubs
-> changes in client jar file


Slide #9

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

Slide #10

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

Slide #11

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

RichClient

WebApp

EAI
-‐>OSB

Fraud

FTP

Billing

JMS


Network

EJB

CRM

JAXWS

Slide #12

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

Slide #13

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

Slide #14

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

Slide #15

Service Bus

-> Service

Virtualization Layer


Slide #16

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

Slide #17

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

Slide #18

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."


Slide #19

What is SOA?

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

Slide #20

basic features & architecture

ORACLE SERVICE
BUS OVERVIEW

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

Slide #22

BPEL/BPMN

Human

Workflow

Business
Rules

Mediator

Unified
RunJme

Policy Manager

Common JCA-based connectivity infrastructure

Eclipse
/

JDeveloper

Oracle
Service
Bus

JPD,
SOAP

SOAP,
WS

JMS,RMI

Oracle

WLS

WLIntegraJon

WLI

Oracle
Tuxedo

DSP,
SOAP

Web-‐based

console

XQuery

MQSeries

ALDataServicesPlaPorm

ALDSP

SOAP,
(s)Tp,
file


MQ

SAP
etc.

SQL

Slide #23

Service Bus Functionality Overview I
•  Loose coupling

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

Slide #24

Service Bus Functionality Overview II
•  Service Aggregation

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

Slide #25

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.

Slide #26

Proxy and Business Service
Oracle
Service
Bus

ServiceImpl1

Client1

ProxyServiceA

BusinessServiceX

ServiceImpl1

Client2

ProxyServiceB

BusinessServiceY

ServiceImpl2


Slide #27

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


Slide #28

Transport and Binding Layer

Client2

BusinessServiceX

ProxyServiceB

BusinessServiceY


Transport

ProxyServiceA

ServiceImpl1

Binding

Binding

Client1

Transport

Oracle
Service
Bus

ServiceImpl1

ServiceImpl2

Slide #29

Context Variables
Variables are filled automatically
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


Slide #30

Message Flow in Proxy
A request
A

A

A
A
A
A

A

A
A

A
A
A
R

response

Pipeline
Stage
Action A
Request path
Response path
Routing Node
R
Route Node


Slide #31

Overview Actions
Flow Control

Message Processing

Routing


Slide #32

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


Slide #33

Dynamic Routing

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

Slide #34

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

Eclipse: XQuery Mapper

Import Xquery from Eclipse as OSB resource

Slide #36

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

JMS

email

ProxyServiceA

BusinessServiceX

email

ﬁle

ProxyServiceB

BusinessServiceY

File

EJB

Tuxedo


Slide #38

JMS Endpoint URI


Slide #39

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

Slide #40

OSB Console
http://host:port/sbconsole

used for:

Operations
Development
Monitoring
Search
Import / Export
Testing

Slide #41

Eclipse Console


Slide #42

what is happening inside?

MONITORING

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?

Slide #44

Server Health
Click on Server Snapshot for per server view


Slide #45

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


Slide #46

Detail: Service Metrics


Slide #47

Operation Metrics
Good result for jitterAndMem implementation:

(errors are provoked with illegal test data)

Slide #48

Detail: Action Metrics


Slide #49

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


Slide #50

Reporting Console
Search for reports via key
Purge all reports or range asynchronously


Slide #51

inbound, outbound, authorized & single signed on

SECURITY

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

ProxyService

BusinessService

ServiceImpl

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

Slide #53

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

Slide #54

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


Slide #55

SAML and WLS / OSB
SAML Pass-Through =
•  OSB = passive intermediary
•  OSB forwards SAML token to service impl.

Active intermediary
Oracle
Service
Bus

Client

AuthenJcator

SAML

CredenJal

Mapper


Service
Impl

SAML

IdenJty

Asserter

Slide #56

availability, load balancing and throttling

CLUSTERING OSB

Distributed OSB Cluster
Clients

Clients

Clients

Oracle
Service
Bus
Cluster

Managed
Server1

Load
Balancer

ProxyService

BusinessService

Managed
Server2

ProxyService

WLS
Cluster

ServiceA

ServiceA

ServiceA

BusinessService


Slide #58

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

Slide #59

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

Slide #61

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

Slide #62

Questions?

Slide #63

Middleware and Cloud Computing Book
Published!


Slide #64

Oracle WebLogic 12c Book


Slide #65

… more ?

Win a copy of the book!
http://www.munzandmore.com/blog

Come to my Cloud Computing Talk:
-> today

@3pm, in this room


Slide #66

munz & more
Training and Consulting
• 
• 
• 
• 

WebLogic Admin Training 9 – 12c
WebLogic Monitoring and Tuning
Oracle Service Bus Training
Cloud Training (AWS, Google, Oracle Cloud)


Slide #67

Oracle Service Bus (OSB) for the Busy IT Professonial

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