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Rapid Web Application Development with the WSO2 Mashup Server

Nuwan Bandara
Nuwan Bandara
Nuwan BandaraAssociate Director & Solutions Architect at WSO2

Rapid Web App Development with WSO2 Mashup Server, The webinar done on 10-03-2011, by Nuwan Bandara & Ruchira Wageesha

Rapid Web Application Development with the WSO2 Mashup Server

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Rapid Web Application Development
  with the WSO2 Mashup Server

      Nuwan Bandara & Ruchira Wageesha
Hurdles of rapid web application
           development
• There are many great web app development
  frameworks, but …



• Is there a simple way to consume different
  information streams, APIs and services ?
• How much code do you have to write to aggregate
  the responses of two different web services ?
• Can you easily setup an event based alert system
How can Mashup Server help you ?
• Mashup server can help you in consuming those
  Web Services, APIs and other information streams
• There is almost no learning curve
• Write the mashup simply in JavaScript and its ready
  to go
• Your web application can have one single entry
  point to consume the mashup and the rest can be
  delegated to the mashup server
Features of the server
•   Provides a service hosting platform
•   Has an extensible programming model
•   Ability to bundle a custom user interface for the mashup
•   Many useful JavaScript APIs (Host-Objects) that can be used when
    writing mashups (WSRequest, IM, File, Session, Scraper etc)
•   Mashup authoring tools
•   Task scheduling
•   Ability apply quality of services
    •   Security, Reliability etc
•   Server administration, monitoring and governance
Architecture
WSO2 Mashup
• Is written in Server Side Javascript
• Able to import any JS library
• Javascript extensions are available for Mashup authors as
     •   Objects (Feed, APP, IM, Tasks, Scraping)
     •   ECMAScript for XML (E4X)
• Immediately becomes a Web Service, which means it;
     •   Can be invoked via SOAP or REST
     •   Can be configured for QoS (Security, Throttling, Policies, etc.)
• Can be monitored (Statistics)

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Rapid Web Application Development with the WSO2 Mashup Server

  • 1. Rapid Web Application Development with the WSO2 Mashup Server Nuwan Bandara & Ruchira Wageesha
  • 2. Hurdles of rapid web application development • There are many great web app development frameworks, but … • Is there a simple way to consume different information streams, APIs and services ? • How much code do you have to write to aggregate the responses of two different web services ? • Can you easily setup an event based alert system
  • 3. How can Mashup Server help you ? • Mashup server can help you in consuming those Web Services, APIs and other information streams • There is almost no learning curve • Write the mashup simply in JavaScript and its ready to go • Your web application can have one single entry point to consume the mashup and the rest can be delegated to the mashup server
  • 4. Features of the server • Provides a service hosting platform • Has an extensible programming model • Ability to bundle a custom user interface for the mashup • Many useful JavaScript APIs (Host-Objects) that can be used when writing mashups (WSRequest, IM, File, Session, Scraper etc) • Mashup authoring tools • Task scheduling • Ability apply quality of services • Security, Reliability etc • Server administration, monitoring and governance
  • 6. WSO2 Mashup • Is written in Server Side Javascript • Able to import any JS library • Javascript extensions are available for Mashup authors as • Objects (Feed, APP, IM, Tasks, Scraping) • ECMAScript for XML (E4X) • Immediately becomes a Web Service, which means it; • Can be invoked via SOAP or REST • Can be configured for QoS (Security, Throttling, Policies, etc.) • Can be monitored (Statistics)
  • 7. Hello World • Step 1 - In Notepad or your favorite IDE, type the following text: • Step 2 - Save this file as 'helloworld.js' in a directory within 'repository/deployment/server/jsservices' directory of Mashup Server. • And now it’s a web service 
  • 8. Few common use-cases • Consuming information from different data sources • Aggregating RSS feeds • Event based alerts • Periodical tasks • Web scraping • Session management
  • 9. If you want to consume many different data sources
  • 10. The WSRequest Object • Similar to the XMLHTTPRequest object • Usage typically involves specifying the endpoint address and setting up options on how to frame the message, invoking the operation with a specific XML payload, and then checking and extracting information from the result.
  • 11. If you want to Aggregating some feeds and create a RSS reader
  • 12. The Feed Object • Helps Mashups to consume and create Atom and RSS Feeds
  • 13. If you want to configure an alert to be sent via IM or email
  • 14. The Email Object • Allows users to send out email from their Mashups. It helps notify users of certain events and acts as a bridge between Mashups and users
  • 15. If you want to create a web scraping bot
  • 16. The Scraper Object • The Scraper object allows data to be extracted from HTML pages and presented in XML format. It provides a bridge to data sources that don't have XML or Web service representations at present
  • 17. Mashup Server in the cloud • You don’t have to worry about deploying a Mashup Server in a hosting environment • Simply create an account at http://cloud.wso2.com • Navigate to the Mashup Server and get cracking
  • 18. Documentation & articles • http://wso2.org/project/mashup/2.2.0/docs/ • http://wso2.org/library/mashup-server • http://jonathanmarsh.net/category/wso2- mashup-server/ • http://www.nuwanbando.com/category/wso2- mashup-server/
  • 19. Contribute and feedback • https://wso2.org/jira/browse/MASHUP • http://wso2.org/forum/226 • http://wso2.org/mail
  • 20. Image References • http://images.sixrevisions.com/2008/12/15- 01_use_framework.png • http://www.theredelephant.org/html/images/rss_xml_at om_feeds_news_icon.jpg • http://www.digitalpipelines.com/images/craigslist- homepage.gif • http://www.livescorefeed.net/images/xmlfeed.png