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JBoss ESB, jBPM, DroolsDeep Dive
Burr Sutter
July 2008
EJB
JMSServlet
JSP
RMI
BPM
App Server vs ESB for SOA
EJB
JMSServlet
JSP
RMI
Questions: burr.sutter@jboss.com
WS
Hibernate
JPA
JCA
SOAP/WSDL
Rules
WS
Hibernate
JPA
JCA
SOAP/WSDL
Application Server
Business Service Enablement Platform
App Server vs ESB for SOA
Load Balancer
Questions: burr.sutter@jboss.com
Load Balancer
Service Clustering
Stateful Fault Tolerance/Smart Load Balancing
App Server vs ESB for SOA
Questions: burr.sutter@jboss.com
Registry
& Messaging
Accounting
CRM
Billing
Inventory
Routing/Orchestration
App Server vs ESB for SOA
Java LAMP F
I
Transformation
Questions: burr.sutter@jboss.com
Registry
& Messaging
.NET Legacy
I
R
E
W
A
L
LPartners
Routing/Orchestration
FTP
File
TCPSOAP
REST
JMS
App Server vs ESB for SOA
Java LAMPF
I
Transformation
ESB
Questions: burr.sutter@jboss.com
Registry
& Messaging
.NET Legacy
I
R
E
W
A
L
LPartners
Routing/Orchestration
FTP
File
TCPSOAP
REST
JMS
Note: an ESB still runs in a JVM
often that is an App Server
SOA Platform 4.2
ESB
Transformation Routing
Infrastructure
Services
Security Management
Pluggable Architecturefor integrating infrastructure services
Web Services
EJB
Java EE 5
Business Service
Components
JCA
Business Servicesrun within a container or standalone
HTTP(S)
(S)FTP
File
JMS
ASCII
XML
Binary
Transports
Event Listeners and Gateways provide transport mediation
Seam
Questions: burr.sutter@jboss.com
Declarative Transformation includes:
Message Normalization,
Validation, Enrichment,
Via XSLT, Groovy, Java, StringTemplate, FreeMarker
Service
Registry
UDDI
ESB
Message
Store
Declarative
Orchestration
Engine
BPEL
jPDL
Process
Store
Event
Notification
POJOs
Business
Data
RDBMS
Legacy
COTS
Service Data Object
Service Component Architecture
SOAPExcel
Browser
Java
Native
Web
SQL
Socket
Hibernate
JCA/Inflow
Custom
Action
Drools
Spring
Groovy
ESB++ Scenario
HTTP
FTP
File
JMS
HTTP
FTP
File
JMS
jBPM
Questions: burr.sutter@jboss.com
SOAP
SQL
Custom
SOAP
SQL
Custom
Rules
EJB WS
Hibernate
JPA
J2EE/Java EE 5 Services
JMS JCA
ESB Definition
• There is NO J2EE-like specification with a TCK that can define
and validate an ESB like there is for App Servers.
• ESBs are categorized by their capabilities – some come from a
heritage of EAI and others of MOM.
• Capabilities:
– Message delivery
– Transport protocol mediation
Questions: burr.sutter@jboss.com
– Transport protocol mediation
– Event capture
– Intelligent routing
– Orchestration
– Transformation
– BPM
– Adapters
– And much, much more.
Action Pipeline (in a Service)
FTP Action Action Action Action
Business
Logic
Component
My_Registered_Service
Actions are reusable mediation components that can be chained
together to form the capabilities of a registered service. Actions
can be dynamically added/removed at runtime.
Action
Questions: burr.sutter@jboss.com
Component
Transformation
CSV to XML
Transformation
XML to POJO
Routing
Splitter
or
BPM
Logging
Audit
Trail
Business Logic:
• POJO
• EJB
• WS
• Rules
• JCA with Adapters
• Anything with Java API
Business
Logic
Invocation
This box can also represent the ESB’s JVM – actions are “in VM”
Demo
Services & Actions
SOAP Action DBEJB
B_Service
A_Service
Questions: burr.sutter@jboss.com
FTPASCII
XML
Binary
Action Action
JMS Action
DBPOJO
C_Service
JMS Action DBWS
D_Service
Content Based Routing
File Action
DBPOJO
Platinum_Service
FTP Action
Ordering_Service
Orders over 12K or from Platinum customers
JMS
Questions: burr.sutter@jboss.com
Randomly grab orders for review – tracer and
Keep a total of all orders flowing through the system
JMS Action
Special_Handling
EJB
DB
Orders from customers in certain states/countries
SOAP
Content Based Routing Engine
• Currently based on JBoss Rules – supports XPATH DSL
• Access to the complete Header and Body/Contents for evaluation
• Zero to many destinations
rule "Routing Rule using XPATH Greater"
when
xpathGreaterThan "/Order/@totalAmount", "50.0"
then
Log : "Really It's EXPRESS Shipping";
Questions: burr.sutter@jboss.com
Log : "Really It's EXPRESS Shipping";
Destination : “express";
end
rule "Routing Rule using XPATH Less"
when
xpathLessThan "/Order/@totalAmount", "50.0"
then
Log : "Really It's NORMAL Shipping";
Destination : “normal";
end
Destination is determined by the jboss-esb.xml
Load Balancing & Fail-Over
Questions: burr.sutter@jboss.com
The same discount_service.esb can be deployed to multiple ESB instances/nodes. Each one
is a new EPRs in the registry. The routing engine is clever enough to load-balance and fail-
over between the various EPRs. Should no EPR be available, it will scheduled the message
for redelivery, waiting N seconds and retrying all possible EPRs found at that time.
Demo
Today Management & Monitoring
• 4.2 Release is focused on JMX instrumentation, the
ability to monitor the health and load of every distributed
service as well as start, stop & restart them remotely.
Questions: burr.sutter@jboss.com
Governance & Rule Services
Action
Groovy -
Discover
Message
OriginAction
Rule
Service:
Discount
Rule
Service
Content
FTP
Order
SOAP
JMS
Questions: burr.sutter@jboss.com
Smooks
XML2POJ
O
Action
Rule
Service:
Priority
Discount Content
Based
Router
Rule
Repository
RuleAgent Cache
Categorization/Classification, Editing, Validation & Testing
Versioning, Audit – for Policy Managers & Business
Analysts
ESP + CEP via ESB, Drools & JON
Multiple Streams
Or Flows
ESB: consumption/capture, transformation, orchestration
Drools: selection, aggregation, correlation, generation and publication
Questions: burr.sutter@jboss.com
BRMS: for editing, versioning, testing
and publishing new rules
Governance
Tools
JON: start, stop services, monitor and alert on service
and action-level performance, monitor and alert on
Business metric values
Orchestration
Service Orchestration & BPM
Submit Order
Receive Order Validate Order
Credit Check
Inventory Check
Handle Shipment
Send Shipment
CSR Teams
Issues
Customer CSR Sales Mgmt WHSE MgmtHumans
FTP
SOAP
File
Questions: burr.sutter@jboss.com
J2EE App
Server
FValidate
Order
Credit
Check
Inventory
Check
Send
Shipment
External Credit/Bank Legacy Partners
Various Transports
An ESB Service is visible in the UDDI registry automatically. A single ESB Service may or may
not expose a WSDL. It may use out-of-the-box actions, custom actions and/or consume external
services from various sources. Focus on the reuse of existing infrastructure and assets.
Orchestration Designer
Questions: burr.sutter@jboss.com
Demo
Questions
Summary
• Orchestration engine for both declarative service flow
and human-task management
• RETE-based rules engine for Content Based Routing,
Event Filtering and event-based data manipulation in
the form of Business Rules Services
• Built-in clustering JMS 1.1 certified broker
• Built-in fragment-based transformation solution
Questions: burr.sutter@jboss.com
• Built-in fragment-based transformation solution
• Built-in UDDI-based registry (with auto-registration)
• Built-in JAX-WS certified web service stack
• Based on the JMX-Microkernel - plug & play of services
• Federated monitoring/management architecture
• Service-level Load Balancing & Fail-Over
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