AWS Transcribe javascript API UnexpectedParameter: Unexpected key 'OutputBucketName' found in params

Question

I am calling the AWS Transcribe service from a Lambda

Lambda code:

  module.exports.createTranscribeJob = (event, context, callback) => {
  const region = event.Records[0].awsRegion;
  const bucket = event.Records[0].s3.bucket.name;
  const key = event.Records[0].s3.object.key;
  const transcribeservice = new AWS.TranscribeService({apiVersion: '2017-10-26'});

  // Set the  transcribeservice startTranscriptionJob params
  const params = {
    LanguageCode: 'en-US',
    Media: {
      MediaFileUri: `https://s3-${region}.amazonaws.com/${bucket}/${key}`
    },
    MediaFormat: 'mp3',
    TranscriptionJobName: key,
    MediaSampleRateHertz: 0,
    OutputBucketName: bucket
  };

  // call startTranscriptionJob with the params
  transcribeservice.startTranscriptionJob(params, function(err, data) {
    if (err){
      console.log(err, err.stack);
    } else {
      console.log(data);
    }
  });

  callback(null);
};

I set the version of the API I want to use new AWS.TranscribeService({apiVersion: '2017-10-26'})

When I call transcribeservice.startTranscriptionJob the job fails with this error:

{ UnexpectedParameter: Unexpected key 'OutputBucketName' found in params
at ParamValidator.fail (/var/runtime/node_modules/aws-sdk/lib/param_validator.js:50:37)
at ParamValidator.validateStructure (/var/runtime/node_modules/aws-sdk/lib/param_validator.js:77:14)
at ParamValidator.validateMember (/var/runtime/node_modules/aws-sdk/lib/param_validator.js:88:21)
at ParamValidator.validate (/var/runtime/node_modules/aws-sdk/lib/param_validator.js:34:10)
at Request.VALIDATE_PARAMETERS (/var/runtime/node_modules/aws-sdk/lib/event_listeners.js:125:42)
at Request.callListeners (/var/runtime/node_modules/aws-sdk/lib/sequential_executor.js:105:20)
at callNextListener (/var/runtime/node_modules/aws-sdk/lib/sequential_executor.js:95:12)
at /var/runtime/node_modules/aws-sdk/lib/event_listeners.js:85:9
at finish (/var/runtime/node_modules/aws-sdk/lib/config.js:320:7)
at /var/runtime/node_modules/aws-sdk/lib/config.js:338:9
message: 'Unexpected key \'OutputBucketName\' found in params',
code: 'UnexpectedParameter',
time: 2018-07-19T12:50:58.278Z }

If I remove OutputBucketName: bucket it works, so I know its not a permissions issue

Looking at the Source code for AWS Javascript sdk OutputBucketName is defined as a member of StartTranscriptionJobRequest https://github.com/aws/aws-sdk-js/blob/75978fcfe4186d5a310e9b5c6d6328e90997edf0/apis/transcribe-2017-10-26.normal.json#L491

My only guess is lambda is not using the correct SDK even though I state the API version.

Any help is appreciated, please let me know if I have an error on my side.

Thanks

score 4 · Accepted Answer · answered Jul 19 '18 at 13:32

4

The problem is AWS Lambda does not use the latest JS SDK

The solution is to include the latest JS SDK in your own node_module folder

npm install aws-sdk

Then your lambda code will use the latest version of the SDK

answered Jul 19 '18 at 13:32

John

61
1
5

score 1 · Answer 2 · answered Jul 19 '18 at 16:32

Thanks John !!. This solution worked, If you where previously editing directly in the web UI, you will loose the ability to edit the code inline.

Then once you download, unzip and run the command posted by John.

npm install aws-sdk

Finally, zip it back up, make sure your zip includes the node_modules directory as well as the .js files you originally downloaded

AWS Transcribe javascript API UnexpectedParameter: Unexpected key 'OutputBucketName' found in params

2 Answers2