Experiment to learn a bit of serverless, lambda, AWS x-ray.

The lambda executes Melanite device resolution matcher used for TAL apps

Set up

npm install -g serverless
npm install

To invoke locally:

serverless invoke local -f resolve --path test.json

To invoke remotely:

serverless invoke -f resolve --path test.json

To run local test loop

node invoke-lambda.js

Environment variables

Data file location

If using S3:

• DATA_FILE_S3_BUCKET - s3 bucket name
• DATA_FILE_S3_PATH - s3 key

If using http:

• DATA_FILE_URL - URL to supported data file

Failure testing

Added injectable error and latency values with environment variables

• CHAOS_ERROR_RATE - (0-1) rate of errors induced when loading data file
• CHAOS_LATENCY - injected articical latency in milliseconds for data file read

X-Ray integration

X-Ray enabled for the lambda and s3 calls captured