Cloudwatch Dashboard Variables in Custom Widgets

Question

Hi,

I'm trying to develop a custom widget for a cloudwatch dashboard that uses a dashboard variable:  https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/cloudwatch_dashboard_variables.html

Can you get access to the current variable value in the lambda of a custom dashboard widget?  I don't see it in the sample lambda event shown here:  https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/add_custom_widget_dashboard_about.html

I've printed out the event of a custom widget lambda and don't see any dashboard variable values there.  I've also tried to add it to the custom widget parameters via $VARNAME, VARNAME, etc with no success.  Maybe it's just not supported yet since dashboard variables are relatively new?

Thanks

Answer

The values of the variables don't get sent to the custom widget as such. Your custom widget needs to be configured with parameters sent to it - and the variable can change value of those parameters. It works the same way all other widgets work.

Posting your dashboard JSON somewhere would help, I can probably show you how to "fix it"

Cloudwatch Dashboard Variables in Custom Widgets

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