Introduction to RESTful Webservice

Introduction to RESTful Webservice Eftakhairul Islam Jr. Software Engineer Right Brain Solution Ltd. email: eftakhairul@gmail.com web: http://eftakhairul.com

What is Webservice?phpXpert Seminar 2011 2

Webservice Design Models XML RPC  SOAP  REST phpXpert Seminar 2011 3

Inside RESTful Webservice? Not Techology and not even protocol Software archetechtural principle Resouces transfer over HTTPphpXpert Seminar 2011 4

Basic Design Principles Of REST1. HTTP methods explicitly2. Be stateless3. Directory structurelike URIs4. Transfer resources by any valid MIME type supported by the web service.phpXpert Seminar 2011 5

HTTP Methods Explicitly Add ResourcesPOST http://api.linkedin.com/v1/people/123/friendsContentType: application/xml<friend uri=“urn:linkedin:v1:people/888”/> phpXpert Seminar 2011 6

HTTP Methods Explicitly Retrieve ResourcesGET http://api.linkedin.com/v1/people/123Output:<?xml version="1.0" encoding="UTF8"?><person> <id>123</id> <firstname>Sakib</firstname> <lastname>Stein</lastname> <connections total="200"> …</person> phpXpert Seminar 2011 7

HTTP Methods Explicitly Update ResourcesPUT http://api.linkedin.com/v1/people/123ContentType: application/xml<person> <name>Sakib Mahmud</name> <bestfriend uri=“urn:linkedin:v1:people/999”/> <photo xsi:nil=“true”/></person> phpXpert Seminar 2011 8

HTTP Methods Explicitly Delete ReasourceDELETE http://api.linkedin.com/v1/people/123/friends/456Output:Friend:456 will be deleted from linkedin. phpXpert Seminar 2011 9

Be StatelessStateful design (NonREST): previousPage++ Client Server nextPage = previousPage return nextPage phpXpert Seminar 2011 10

Be Stateless Stateless design (REST): GET /resources/?page=2 HTTP/1.1 <?xml version= ”1.0” ?> <rsp page=”2” nextPage=”3”> Client <resource id = 11/> Server <resource id = 12”/> . .. </rsp>phpXpert Seminar 2011 11

Directory Structurelike URIshttp://example.com/topics/{topic_name}http://graph.facebook.com/10150224661566729http://twitter.com/statuses/user_timeline.xml? id=eftakhairul phpXpert Seminar 2011 12

Transfer Resources By Any Valid MIME TypeMostly Used XML JSON XHTMLAny other valid contend type phpXpert Seminar 2011 13

Thank You Please Stop Software Piracy, Save Developer Use FOSS or Genuine SoftwarephpXpert Seminar 2011 14

Introduction to RESTful Webservice

by eftakhairul on Dec 17, 2011

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