Improved JSON Support of WSO2 ESB 4.8

Vanjikumar SivajothySenior Software Engineer

Ishan JayawardenaSenior Software Engineer

February 20 2014

WSO2 Advantage Webinar

Improved JSON support of WSO2 ESB 4.8.0

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About the PresentersVanjikumar Sivajothy vanji@wso2.com

Senior Software Engineer

Vanji joined WSO2 in February 2013. He is a Senior Software Engineer in the WSO2 Enterprise Service Bus product team. In addition to his product development efforts he has also provided technology consulting on customer engagements, including development service programs.

Ishan Jayawardena ishan@wso2.com

Senior Software Engineer

Ishan joined WSO2 in December 2011. He is a software engineer in the integration technologies team where he mainly focuses on the WSO2 Enterprise Service Bus. In addition to his product development efforts he has also provided technology consulting on customer engagements, including customer QuickStart programs focused on Enterprise Application Integration projects.

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About WSO2๏ Global enterprise, founded in 2005

by acknowledged leaders in XML, web services technologies, standards and open source

๏ Provides only open source platform-as-a-service for private, public and hybrid cloud deployments

๏ All WSO2 products are 100% open source and released under the Apache License Version 2.0.

๏ Is an Active Member of OASIS, Cloud Security Alliance, OSGi Alliance, AMQP Working Group, OpenID Foundation and W3C.

๏ Driven by Innovation

๏ Launched first open source API Management solution in 2012

๏ Launched App Factory in 2Q 2013

๏ Launched Enterprise Store and first open source Mobile solution in 4Q 2013

๏ Generated 2x revenue growth in 2013 and 2012

๏ Captured 65 new customers in 2013

๏ Obtained $20 M of funding from CISCO and Toba Capital

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What WSO2 delivers

Agenda

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JSON

JSON Support of WSO2 ESB 4.8.0

Developing JSON aware message flows with ESB 4.8.0

Accessing content of JSON messages

Content Based Routing (CBR) for JSON messages

Constructing, and Transforming JSON

Logging, and Troubleshooting

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JSONA data interchange format that is,

๏ Lightweight

๏ Text-based

๏ Language independent

๏ Human/machine readable

A better data interchange format

JSON and JavaScript

Internet Media type

๏ application/json

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JSON Support of WSO2 ESBMessage Builders, and Message Formatters

๏ Builder, Formatter

Register builder formatter in ESB_HOME/repository/conf/axis2/axis2.xml

<messageBuilder contentType="application/json" class="org.apache.synapse.commons.json.JsonStreamBuilder"/>

<messageFormatter contentType="application/json" class="org.apache.synapse.commons.json.JsonStreamFormatter"/>

๏ StAXON

๏ Deferred Building

๏ Efficient

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JSON Support of WSO2 ESBJSONPath

๏ Log, Property, Switch, Filter

PayloadFactory, Script Mediators

๏ Construct, transform JSON

Convert between JSON and XML

<property name="messageType" value="application/json" scope="axis2"/>

<property name="messageType" value="application/xml" scope="axis2"/>

Better XML representation of JSON requests

๏ Minimum information loss

๏ Supports complex JSON structures

๏ Supports special characters

Documentation

http://docs.wso2.org/display/ESB481/JSON+Support

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Accessing JSON ContentAccessing Content of a JSON payload

๏ JSONPath

json-eval()

๏ XPath

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JSONPath Syntax

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CBR - JSONPath

๏ Filter Mediator

๏ Switch Mediator

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Payload Access - JSONPath

๏ Log Mediator

๏ Property Mediator

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Logging - JSON payload

๏ Log the entire payload using Log Mediator for JSON payload

๏ Full payload log in XML using Log Mediator

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Constructing JSON Payloads PayloadFactory Mediator

Well defined payload

Known structure for payload

Script Mediator

Recurring Structure like Array

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Constructing JSON - Payload

๏ The PayloadFactory mediator provides the simplest way to work with JSON payload

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Constructing JSON - Script

๏ The Script mediator provides the flexibility for handle recurring structures such as arrays

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Transforming JSON Payloads

๏ JSON to XML

๏ XML to JSON

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TroubleshootingDebugging using Carbon logs

๏ <ESB_HOME>/repository/conf/log4j.properties

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Call to Action

Download WSO2 ESB

http://wso2.com/products/enterprise-service-bus/

ESB Product Documentation

http://docs.wso2.org/display/ESB481/WSO2+Enterprise+Service+Bus+Documentation

Articles On REST RESTful Integration with WSO2 ESB

http://wso2.com/library/articles/2013/12/restful-integration-with-wso2-esb/

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Questions?

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Business Model

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