Lambda with S3 event triggers in AWS - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to specify the AWS service that triggers the Lambda function.

AWS

"Events": ["[1]"],

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Aec2

Bdynamodb

Cs3:ObjectCreated:*

Dsns

Attempts:

3 left

💡 Hint

Common Mistakes

Using unrelated service names like 'ec2' or 'sns' as event triggers.

Omitting the event type suffix like ':ObjectCreated:*'.

The event type s3:ObjectCreated:* triggers the Lambda function when an object is created in the S3 bucket.

2fill in blank

medium

Complete the code to specify the S3 bucket name in the event source configuration.

AWS

"Bucket": "[1]",

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Amy-lambda-bucket

Blambda-function

Cmy-ec2-instance

Dcloudwatch-logs

Attempts:

3 left

💡 Hint

Common Mistakes

Using the Lambda function name instead of the bucket name.

Using unrelated resource names like EC2 or CloudWatch.

The Bucket property should be the name of the S3 bucket that triggers the Lambda function, such as my-lambda-bucket.

3fill in blank

hard

Fix the error in the Lambda function handler declaration.

AWS

def [1](event, context):

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Alambda_handler

Bmain

Chandle_event

Dprocess

Attempts:

3 left

💡 Hint

Common Mistakes

Using generic function names like 'main' or 'process' without updating Lambda configuration.

Using names that do not match the handler setting.

The standard AWS Lambda Python handler function is named lambda_handler by convention and configuration.

4fill in blank

hard

Fill both blanks to correctly extract the bucket name and object key from the event.

AWS

bucket = event['Records'][0]['s3']['[1]']['[2]']

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Abucket

Bname

Cobject

Dkey

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'object' or 'key' instead of 'bucket' and 'name' for bucket extraction.

Mixing up bucket and object keys.

The bucket name is accessed via event['Records'][0]['s3']['bucket']['name'].

5fill in blank

hard

Fill both blanks to correctly extract the object key from the event.

AWS

object_key = event['Records'][0]['s3']['[1]']['[2]']

Drag options to blanks, or click blank then click option'

Aobject

Bkey

Dname

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'bucket' instead of 'object' for object key extraction.

Confusing 'name' with 'key' for the object.

The object key is accessed via event['Records'][0]['s3']['object']['key']. The 'key' field holds the object name.