Mashup Generator for

XBaya

1

Denis Weerasiri

University of Moratuwa

Outline

• The Story

• Mashups to the rescue

• Mooshabaya

• Back to the story

• Implementation

• Mooshabaya in..

• Mooshabaya Further..2

3

Motivation

From deciding whether to carry an umbrella in the morning to helping an airplane pilot choose the best flight path, accurate and timely weather information is essential to keeping us comfortable and safe.

The LEAD project from University of Indiana provides a Web-based virtual organization and portal to scientific research tools for meteorologists, atmospheric scientists, and anyone who wants to interactively explore the weather as it evolves.

A Whether Forecasting Process…

Satellite data retrieval

Mathematical modeling

Data assimilation

Algorithmic techniques to derive data

Results - back to the scientist

4

The Story

So a scientist requires a system ...

• To depict the real world problems or scientific scenarios as workflows.

• To execute the workflows and monitor them in real time.

• To secure some of his workflows from unauthorized access, while accessing the secured services.

5

Story Continues ...

• Traditional workflow languages or xml technologies have a large learning curve.

• He wants to prototype the workflows quickly.

• He is interested in using the data provided by web based APIs.

• He likes to integrate data sources like web feeds into the system.

6

Mashups to the rescue

• Mashups aggregate contents and services from two or more sources.

• Rapidly developed by mashing up APIs.

• Little investment in learning the mashup APIs and for using them.

7

Mooshabaya

• Exploring synergy of the workflow

domain and the mashup domain by a

potential merge.

8

Not Re-inventing the Wheel..

• XBaya Graphical Workflow Composer from Indiana University as the workflow composer of Mooshabaya.

• WSO2 Mashup Server to deploy the generated mashups.

• WSO2 Registry for the services.

9

Mooshabaya

WS-Messenger

Governance Registry

Mashup Server

Identity Server

Eventing Host

Object

Security

Registry Integrati

-on Mashup generati

-on

UI

Monitori-ng

Mashup Deploy-

ment

Back to the story…

Su

bs

cri

be

No

tify

Publish

Deploy

ExecuteDeployService

Fetc

hD

isco

ve

r

Ad

d

Fetch

11

Components of Mooshabaya

12

Security

Registry Integration

MashupGeneration

+Validator

UI

Monitoring

Mashup Deployment

+Runner

DeployService

EventingHost Object

User Interface

• Server configurations

• GUI based Workflow composition

• Event representation

Security

Registry Integration

MashupGeneration

+Validator

UI

Monitoring

Mashup Deployment

+ Runner

DeployService

Eventing Host Object

13

User Interface

Security

Registry Integration

MashupGeneration

+Validator

UI

Monitoring

Mashup Deployment

+ Runner

DeployService

Eventing Host Object

14

Registry Integration

Security

Registry Integration

Mashup Generation

+Validator

UI

Monitoring

Mashup Deployment

+ Runner

DeployService

Eventing Host Object

15

• Earlier supported XRegistry

• Now supports fetching meta data from WSO2

Governance Registry

• Meta data

o WSDL

o Workflow meta data (.xwf)

• Adding and importing resources

• Extensible to other registry types

Mashup generation +Validation

Security

Registry Integration

Mashup Generation

+Validator

UI

Monitoring

Mashup Deployment

+ Runner

DeployService

Eventing Host Object

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Composition

• Service discovery

• GUI based composition

Validate

• Logical validation

• Compatibility testing

Generate

• Stub inclusion

• Eventing injection

Serialize

Mashup Deployer + Runner

DeployService

Eventing Host Object

Security

Registry Integration

Mashup Generation

+Validator

UI

Monitoring

Mashup Deployment

+ Runner

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Deploy Mashup

Mashup server, Registry &

Mooshabayasynchronization

Mashup remote invocation

Monitoring

DeployService

Eventing Host

Object

Security

Registry Integration

Mashup Generation

+Validator

UI

Monitoring

Mashup Deployment

+ Runner

18

WS-Messenger

Mooshabaya

Monitoring

Mashup Server

Eventing Host Object

No

tify

Su

bs

cri

be Invok Mashup

Publish

Security Component

DeployService

Eventing Host Object

Security

Registry Integration

MashupGeneration

+Validator

UI

Monitoring

Mashup Deployment

+ Runner

19

Security

Mashup Run TimeComposition Time

Securing Generated

Mashup

Accessing Secured

Services in Mashup

SSL + Basic Auth

UsernameToken over HTTPS

Mashup Life-cycle

20

Compose

Generate

Deploy

Configure

Execute

Monitor

Security

Registry Integrat

-ionMashup

Generation+

ValidatorUI

Monito-ring

Mashup Deployme

nt+

Runner

DeployService

EventingHost

Object

Security

UI

Mashup Deployme

nt+

Runner

Discussion

Using mashups to deploy workflows as a light-weight medium

Rapid workflow prototyping and testing

Complete life cycle of a mashup

Seamless data aggregation to workflows taking service-level requirements in-to consideration

23

Conclusion and Future work

Using Mooshabaya as base...

Mashup perspective

Workflow perspective

Providing non-functional requirements

Security

Monitoring

RM

Atomic processes etc.24

Conclusion and Future work

Let's not converting high value business processes into mashups

Rather use mashups based implementations in data intensive workflows with the consideration of security, monitoring etc.

25

Mooshabaya in..

• Scientific workflows

• Business Processes

• Educational Researches

• Weather forecasts

27

• Q&A

29

• Thank you..

30