Deploy Lambda Function to AWS with Alexa Skill Trigger

Question

I'm using node-aws-lambda to deploy a lambda function directly using gulp and node.js. The function itself is being deployed properly. However, the trigger I try to configure is using an Amazon Alexa Smart Home Skill ARN. The validation complains that this ARN is not allowed.

This is my config (access and policies are fine):

module.exports = {
  accessKeyId: 'AAAAAAAAAAAAAAAAAAA',  // User: 
  secretAccessKey: 'BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB',  // optional
  region: 'eu-west-1',
  handler: 'index.handler',
  role: 'arn:aws:iam::1234567890:role/SmartHomeSkillRole', // KNXSmartHomeSkillRole
  functionName: 'SmartHomeSkill_Remote',
  timeout: 10,
  memorySize: 128,
  publish: true,
  runtime: 'nodejs4.3',
  description: 'A remotely build skill for alexa',
  eventSource: {
    EventSourceArn: 'amzn1.ask.skill.d9d9f7b1-f7d6-4050-a3d1-753e47e7038a', 
    BatchSize: 200,
    StartingPosition: "TRIM_HORIZON"
  }
}

The value in EventSourceArn is being the failure's source (amzn1.ask.skill is not valid, while putting the trigger in manually in the console works well):

ValidationException: 1 validation error detected: Value 'amzn1.ask.skill.d9d9f7b1-f7d6-4050-a3d1-753e47e7038a' at 'eventSourceArn' failed to satisfy constraint: Member must satisfy regular  expression pattern: arn:(aws|aws-us-gov):([a-zA-Z0-9\-])+:([a-z]{2}(-gov)?-[a-z]+-\d{1})?:(\d{12})?:(.*)
    at Object.extractError (E:\DropBox\p\jisageek\IoT\AlexaKNX\node_modules\aws-sdk\lib\protocol\json.js:48:27)
    at Request.extractError (E:\DropBox\p\jisageek\IoT\AlexaKNX\node_modules\aws-sdk\lib\protocol\rest_json.js:37:8)
    at Request.callListeners (E:\DropBox\p\jisageek\IoT\AlexaKNX\node_modules\aws-sdk\lib\sequential_executor.js:105:20)
    at Request.emit (E:\DropBox\p\jisageek\IoT\AlexaKNX\node_modules\aws-sdk\lib\sequential_executor.js:77:10)
    at Request.emit (E:\DropBox\p\jisageek\IoT\AlexaKNX\node_modules\aws-sdk\lib\request.js:682:14)
    at Request.transition (E:\DropBox\p\jisageek\IoT\AlexaKNX\node_modules\aws-sdk\lib\request.js:22:10)
    at AcceptorStateMachine.runTo (E:\DropBox\p\jisageek\IoT\AlexaKNX\node_modules\aws-sdk\lib\state_machine.js:14:12)
    at E:\DropBox\p\jisageek\IoT\AlexaKNX\node_modules\aws-sdk\lib\state_machine.js:26:10
    at Request.<anonymous> (E:\DropBox\p\jisageek\IoT\AlexaKNX\node_modules\aws-sdk\lib\request.js:38:9)
    at Request.<anonymous> (E:\DropBox\p\jisageek\IoT\AlexaKNX\node_modules\aws-sdk\lib\request.js:684:12)

Is that an error in the sdk or do I have to configure the trigger manually or is there another way to create a trigger programmatically?

Any advice is appreciated. Thanks!

joerg

Caleb Gates Caleb Gates · Accepted Answer · 2017-08-02T21:57:24

I haven't done what your trying before but a quick look at your error message shows that you've provided the wrong ARN.

Value 'amzn1.ask.skill.d9d9f7b1-f7d6-4050-a3d1-753e47e7038a' at 'eventSourceArn' 
failed to satisfy constraint: 
Member must satisfy regular  expression pattern: arn:(aws|aws-us-gov):([a-zA-Z0-9\-])+:([a-z]{2}(-gov)?-[a-z]+-\d{1})?:(\d{12})?:(.*)

The regular expression provided states your reference should start with "arn:" like those provided by Amazon Lambda.

For example your ARN from above

arn:aws:iam::1234567890:role/SmartHomeSkillRole

It appears you have provided your Alexa Skill Identifier as provided by the Alexa developer service.

amzn1.ask.skill.d9d9f7b1-f7d6-4050-a3d1-753e47e7038a

I would try swapping the EventSourceArn: with the Roll: or trying both as the arn value. - Hope this helps but like I said this is speculation from the information provided.

Deploy Lambda Function to AWS with Alexa Skill Trigger

2 Answers