Oracle BPEL Implementation

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(No Transcript)
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Oracle BPEL Implementation

• Andy ChiSales Consultant

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Agenda

• Workflow Services
• Integration
• Security

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Service-Oriented Architecture
Integrate
Orchestrate Services
Develop
Secure
Change
Manage
Monitor
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Workflow Services
System
Human

BPEL

BPEL can interleave human interactions and
connectivity to systems/services into a single
end to end process flow


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Workflow Requirements
Task routing various flow patterns and
dispatching rules
Task assignment to Users, roles, groups

Notification to users/groups - Email, Voice,
Pager, SMS
Escalation and Delegation rules

Task History and Audit, Productivity Reports
Customizable Worklist, Task forms, attachments


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Workflow as a Service
WSDL Contract
Workflow Service
Assign Task
Update Task
Task Complete
Worklist
BPEL Process

• - assign tasks to a user/role
• - wait for task completion as part of an end to
  end process flow

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Workflow Services Exchange Patterns
Get Approvals
Change routing
All Approvals Complete
BPEL Process
BPEL Process
Assign tasks to role or group (from directory)
Flow patterns, Routing rules
List work items
Escalate Task
Notify manager
Complete task
Get weekly productivity report
Task Resolved
BPEL Process
Worklist (tasks, forms, attachments, reports)
Escalation and Delegation rules
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End-to-End Scenario
Network Provisioning
Set Up Route
Set Up Account
Install Equipment
ITV Box
Activation Mgr.
Account Ready
DishInstallation
Install complete

• Composite applications interleaves services
  (request/response) and human interactions
  (assign task/complete task)

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Workflow Patterns

• Task Flow
• Task Details
• Assignment policy
• Notification preferences
• Task routing policy

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Workflow Services Task Flow

• Simple Task Assignment
• Sequential workflow
• Parallel workflow (review/voting)
• Adhoc workflow
• FYI task
• Many variations - automatic escalation, renewal
  etc.
• Tasks may be on renewed or escalated on
  expiration
• Can send reminders when tasks are about to expire
• Can mix-and-match above patterns to create
  chained workflows

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Notification Service

• Users can be notified of task status changes
• Assignee, Creator, approver notification when
  task assigned, completed, expired etc..
• User properties and preferences automatically
  looked up using Identity service
• Channels supported
• Email
• Voice
• Fax
• Actionable Email notifications
• Voice, Fax, SMS supported out-of-the box

• Pager
• SMS

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Identity Service

• Links up workflow service to user Directories
• Authentication and Authorization api
• Controls access to worklist and tasks
• Authorizes operations on tasks
• Provides access to users or roles
• User privileges, group memberships
• User properties contact info, organization
  hierarchy
• Types of users end user, process owner, admin
  etc.
• Out of the box plug-ins for
• OID
• LDAP
• JAZN/File
• Can write Custom plug-in for other user/role
  repositories

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BPEL PM - Workflow Services
Workflow Services
BPEL Process
Identity Service (Users, Roles)
Task Management Service
Portal
Task Routing Service
Task Assignment History/Audit
Worklist Service
Worklist
Task Action Service
Notification Service
Email client
Notification Channels
Identity Management
Email
OID, LDAP, JAZN
AS Wireless (Voice, SMS, Pager)
Oracle DB
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Modeling workflow in the BPEL Designer
Eclipse, JDeveloper
BPEL Designer
Workflow Service
BPEL Process
Initiate ltreceivegt

• Task Flow
• Sequential, parallel, Adhoc, FYI ,,,
• Task Details
• Title
• Priority
• Creator
• Expiration Date
• Outcomes

assignTask ltinvokegt
onTaskComplete ltreceivegt
2b. Configures Task and routing slip for Workflow
Service
2a. Generates BPEL fragment
Form (Payload display)
checkStatus
Routing Slip (assignment policy)
notifyClient ltreplygt
End
Escalation rules
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Demo Scenario Loan Flow (StarLoan approval
workflow)
LOAN FLOW BPEL PROCESS
CLIENT
receive
getSSN
SCOPE
getRating
FLOW
Star Loan
United Loan
invoke
invoke
receive
receive
select
CLIENT
Notify Customer
end
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Industry Dynamics BPEL

• Process Integration Before

• Process Integration After

Choice 1 Build your Own
Choice 2 Traditional EAI
Choice 3 BPEL Business Processes

• Complex Code
• Errors
• Hardwired

• Monolithic
• Vendor Lock-in
• Expensive
• Simplistic

• Industry Standard
• Rich Process Semantics
• First Class Citizen of the J2EE platform
• Open and Extensible

Web Services or WSIF Binding Framework
Adapters
Portal
SAP
MQ Series
Database
Portal
SAP
MQ Series
Database
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Web Services Invocation Framework (WSIF)

• Describe any artifact with WSDL, invoke with
  native protocols
• Performance
• Transactions
• Used extensively by BPEL

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WSIF Bindings

• Supported bindings include
• JCA
• Java, EJB
• JMS
• HTTP GET/POST
• New bindings can be written as needed
• For more info see http//ws.apache.org/wsif/

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Incorporating Java/J2EE Code

• In-lining of Java in BPEL process
• High performance
• Currently extension to BPEL standard
• WSIF Java binding
• Allows Java objects to be called from BPEL as if
  they were Web services
• Has limitations on interfaces allowed for Java
  classes
• Wrap Java code as a true Web service (via SOAP)
• Use any toolkit (e.g. JDeveloper/OC4J, Apache
  Axis, )

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J2EE Connector Architecture

• JCA is an architecture that provides a standard
  way for integrating a J2EE application server and
  Enterprise Information Systems (EISs)
• JCA 1.0 is part of J2EE 1.3
• JCA 1.5 is part of J2EE 1.4

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What is the benefit of JCA?

• Simplify EIS integration by providing
• Comprehensive integration framework
• Ease of Integration (reduce integration
  points/cost)
• Industry Standard
• Flexibility
• Not limited to connectivity, can be used for
  other services.

EIS
EIS
AppServer
AppServer
JCA
mn
mn
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Adapter Services
J2EE Applications
Siebel CRM
BAM
Mainframe
BPEL BPM
Database
PORTAL
Oracle APPS HRMS
Cobol File
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Adapter Integration with BPEL PM

• Adapter Framework
• Light-weight
• Based on WSIF and J2CA standards.
• WSIF Provider for Outbound
• JCA 1.5 specific system contracts for Inbound.
• Adapter is
• JCA 1.5 Resource Adapter
• Deployed in OC4J container.

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Adapter Services

• File Adapter
• DB Adapter
• AQ Adapter
• FTP Adapter
• JMS Adapter
• Oracle Applications

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D E M O N S T R A T I O N
Adapter Demo
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BPEL and Security
BPEL FLOW
start
1000am
Get Rating
Handle Negative Credit Exception
Send Loan Application
Send Loan Application
Receive Loan Offer
Receive Loan Offer
?
Select Lowest Offer
end
0300pm
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Whats Missing?

• Anyone who can access the server can initiate
  loan applications

• SSN sent in clear text

BPEL Flow
1000am
start
ltSSNgt 011-22-4488 lt/SSNgt
Get Rating
Handle Negative Credit Exception
Send Loan Application
Send Loan Application
Receive Loan Offer
Receive Loan Offer
?
Select Lowest Offer
end
0300pm
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BPEL Oracle WSM Policy Enforcement
Add Oracle WSM Gateways/Agents
BPEL Flow
1000am
start
Get Rating
Handle Negative
Credit Exception
Send Loan Application
Send Loan Application
Receive Loan Offer
Receive Loan Offer
Select Lowest Offer
?
end
0300pm
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Service Visibility and Compliance

• Oracle WSM Monitor provides real-time visibility
  into Web Service interactions
• Automates operational issue resolution by
  dynamically updating policies
• Proactively alerts about anomalies
• Enforces policies based on real-time monitoring
  data
• Lowers management costs
• Validates compliance with IT best practices

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Designed for Performance
BPEL-Optimized SOAP Stack
Write-through Cache
BPEL Server
App. Server

• Binary DOM
• Lazy Loading
• Smart Partitioning
• W3C DOM Interface
• Support for Large Documents

BPEL Server
App. Server
Dehydration Store (Oracle Database)
BPEL Server
Support for large BPEL Processes (20,000
activities)
App. Server

• Stateless Architecture
• Clustering
• Fail Over

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Need for Scalability
KEY FEATURES

• Scale on demand
• No code change
• Easy-to-manage
• IntelLinux Friendly

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