Writing Extensions to Siddhi

Custom extensions can be written in Siddhi in order to cater usecase specific logics that are not out of the box available in Siddhi. 

Refer Siddhi Query Language - WritingCustomExtensions to get a general idea of how to write an extension. 

The following sections explains how we can create different types of Siddhi Extensions in details,

• Writing a Custom Window Extension
• Writing a Custom Aggregate Function
• Writing a Custom Stream Function Extension
• Writing a Custom Function
• Writing a Custom Stream Processor Instruction