CODEWITHSUNDEEP
aws-lambdaaws-api-gateway
user2903819
user2903819

Reputation: 180

How do I conditionally set field in AWS API Gateway integration template?

I have an API Gateway to Lambda integration. In integration template I would like to check one of the input params and depending on it's value, I would like to set field in event that gets passed to Lambda. For that I wrote integration template but it always seems to go in else case even when I pass 'ext-prod-live' as environment in POST request. So my event['stage_variables']['solr_url'] is always $stageVariables.solr_url. I think that I am not accessing POST body correctly and getting "" back from $input.params('environment').

Template

#set($inputJson = $input.json('$')) { "request" : $inputJson, "Authorization" : "$input.params().header.get('Authorization')",
#if ( $input.params('environment') == "ext-prod-live" ) "stage_variables" : {"solr_url" : "$stageVariables.live_solr_url"}
#else "stage_variables" : {"solr_url" : "$stageVariables.solr_url"}
#end }

Request body

{"environment": "ext-prod-sim", "min_ts": 0,
                "execType": 14}

Any help is much appreciated.

Upvotes: 2

Views: 2732

Answers (1)

user2903819
user2903819

Reputation: 180

After some research I figured out that I had to use the velocity template language and path to access POST payload correctly. basically changed "$input.params('environment')" to "$input.path('$.environment')"

Upvotes: 4

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