Lambda S3 trackhub
Use API Gateway to accept a JSON object of trackhub information.
Use AWS Lambda to run a python script that uses daler/trackhub to create a trackhub and save it to S3.
Setup instructions
- Create a zip file of Python code
Create a virtual environment Install the requirements.txt
Add site packages to base directory of zip
cd $VIRTUAL_ENV
zip -r9 ~/CreateTrackhub.zip .
Add create_trackhub.py to zip
cd lambda-create-trackhub
zip -g CreateTrackhub.zip create_trackhub.py
- Create a Lambda function and upload the zip file to the function
Go to lambda console.
https://console.aws.amazon.com/lambda
Create Function Upload ZIP file in 'Function code'
- Create a Role that can write to S3 by following:
Creating a function will prompt you to create a role.
https://docs.aws.amazon.com/lambda/latest/dg/with-s3-example-create-iam-role.html
It needs to be able to have S3 permissions for GetObject, GetObjectAcl, PutObject, PutObjectAcl
- Use 'Add triggers' to create an api gateway that calls the function
Have it require an API key.
- Call lambda function using API Gateway POST request
Include x-api-key in header with API key as value. Body is raw JSON (application/json) with sample.json included in body It should return a JSON object with 'hubPath' key that points to the hubName.hub.txt that was created in S3.
useful links
https://docs.aws.amazon.com/lambda/latest/dg/setup-awscli.html