Dynamically attach api key to usage plan

Serverless Framework
1

My lambda function creates api keys and I would like to attach them to a usage plan that is also generated by the cloudformation template where the function is defined. How can I pass in the id of the usage plan created by the serverless.yaml file since the usage plan ids are generated automatically.

function createUsageKey(key, plan_id) {
  return new Promise((resolve, reject) => {
  var params = {
  keyId: key.id /* required */,
  keyType: "API_KEY",
  usagePlanId: plan_id /* required */
};

apigateway.createUsagePlanKey(params, function(err, data) {
  if (err) {
    console.log(err, err.stack);
    reject(err);
  }
  // an error occurred
  else resolve(data); // successful response
});

});
}

usagePlan:
quota:
limit: 1000
offset: 2
period: MONTH
throttle:
burstLimit: 20
rateLimit: 10

2

The easiest solution is to pass the usage plan ID to the Lambda as an environment variable. You can set the value of the environment variable using a Ref in your serverless.yml.

Something like:

functions:
  myfunc:
    # The definition for your function here
    environment:
      USAGE_PLAN_ID: { "Ref": "MyUsagePlan" }

resources:
  Resources:
    MyUsagePlan:
      # Define your usage plan here

Then inside your Lambda use process.env.USAGE_PLAN_ID