General purpose request template for AWS Api Gateway methods. Use with /{resource}

requestTemplate.vtl

#set($root = $input.path('$'))

#set($res = {"method":"$context.httpMethod", "resource":"$input.params('resource')", "requestId":"$context.requestId" })

#set( $optional = ["Authorization", "X-MyApp-Api-Token"])

#foreach ($x in $optional)
  #if ($input.params($x).length() > 0)
    #set( $res[$x.toLowerCase()] = $input.params($x))
  #end
#end

{
    #set($map=$res)
    #foreach($k in $map.keySet())
      "$k":"$map.get($k)"#if ($foreach.hasNext),#end
      
    #end,
    
    "__data" : $input.json('$')
}