Creating Custom IO extension type

[Girish N]

Hi,

We are trying to  create a custom io extension type by following the steps mentioned in the below url

https://docs.wso2.com/display/SP400/Writing+Custom+Siddhi+Extensions#WritingCustomSiddhiExtensions-siddhi-io

After implementing the extension logic, we have built the source and placed the jar in the bundle folder of wso2-analytics. But we are getting below error, when the siddhi containing the custom extension is deployed

[2021-06-16 08:49:17,081] ERROR {org.wso2.carbon.streaming.integrator.core.internal.StreamProcessorDeployer} - io.siddhi.core.exception.SiddhiAppCreationException: Error on 'TEST_CUSTOM_SIDDHI' @ Line: 26. Position: 92, near '@sink(type='sms', @map(type='json', @payload(message='{{message}}', mobiles='{{mobiles}}')))'. No extension exist for sink:sms org.wso2.carbon.streaming.integrator.core.internal.exception.SiddhiAppDeploymentException: io.siddhi.core.exception.SiddhiAppCreationException: Error on 'TEST_CUSTOM_SIDDHI' @ Line: 26. Position: 92, near '@sink(type='sms', @map(type='json', @payload(message='{{message}}', mobiles='{{mobiles}}')))'. No extension exist for sink:sms

Please let us know, if the approach is correct and what we can do to fix this issue.

Thanks & Regards

Girish N