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Pass additional parameters to cron destination


I have 5 crons which have separate destination lambdas. All lambdas do same work except they just pass a different parameter to a common downstream. Currently there is no way to pass additional parameter alongside cron so that I can have 1 lambda as destination for 5 crons instead of 5 different ones. Can you add this feature?

2 Answers

Hi, I assume you created your cron using an eventbridge rule. If that's the case, and you trigger all 5 lambdas using the exact same cron schedule, and your parameters are fixed, did you try the following?

  • on your eventbridge rule, create 5 targets
  • every target calls your lambda
  • in every target, open the additional settings panel, set "configure target input" to "Constant (json text)", and in the "Specify the constant in JSON" editor, add the parameters you need to pass to your lambda, e.g. {"region": "eu-west-1", "myParam": "paramValue" }
  • in your lambda, read the parameters that you have set in the eventbridge rule using the event input

Example using the ruby language

def lambda_handler(event:, context:)
    symbol_event = JSON.parse(JSON[event], symbolize_names: true)
    puts symbol_event[:region]

Hope that's what you're looking for. If not, please let me know what I missed in your case.

answered 6 months ago

You can configure the payload that will be sent to the targets by specifying a Constant json object. Each target will have a different value.

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answered 6 months ago

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