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Siddhi Map JSON

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The siddhi-map-json extension is an extension to Siddhi that converts JSON messages to/from Siddhi events.

For information on Siddhi and it's features refer Siddhi Documentation.


  • Versions 5.x and above with group id io.siddhi.extension.* from here.
  • Versions 4.x and lower with group id org.wso2.extension.siddhi.* from here.

Latest API Docs

Latest API Docs is 5.2.3.


  • json (Sink Mapper)

    This extension is an Event to JSON output mapper.
    Transports that publish messages can utilize this extension to convert Siddhi events to JSON messages.
    You can either send a pre-defined JSON format or a custom JSON message.

  • json (Source Mapper)

    This extension is a JSON-to-Event input mapper. Transports that accept JSON messages can utilize this extension to convert an incoming JSON message into a Siddhi event. Users can either send a pre-defined JSON format, where event conversion happens without any configurations, or use the JSON path to map from a custom JSON message.
    In default mapping, the JSON string of the event can be enclosed by the element "event", though optional.


There are no other dependencies needed for this extension.


For installing this extension on various siddhi execution environments refer Siddhi documentation section on adding extensions.

Support and Contribution

  • We encourage users to ask questions and get support via StackOverflow, make sure to add the siddhi tag to the issue for better response.

  • If you find any issues related to the extension please report them on the issue tracker.

  • For production support and other contribution related information refer Siddhi Community documentation.