Cloud Computing for Data Analysis

147

1 from chalice import Chalice, Rate

2

3 app = Chalice(app_name="helloworld")

4

5 # Automatically runs every 5 minutes

6 @app.schedule(Rate(5, unit=Rate.MINUTES))

7 def periodic_task(event):

8 return {"hello": "world"}

It can also run event-driven lambdas.

1 from chalice import Chalice

2

3 app = Chalice(app_name="helloworld")

4

5 # Whenever an object uploads to 'mybucket'

6 # this lambda function will be invoked.

7

8 @app.on_s3_event(bucket='mybucket')

9 def handler(event):

10 print("Object uploaded for bucket: %s, key: %s"

11 % (event.bucket, event.key))

Google Cloud Functions

Google Cloud Functions have mu in common with AWS Lambda. ey work by invoking a