Serverless Application Model (SAM) in AWS - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define a Lambda function resource in SAM.

AWS

Resources:\n  MyFunction:\n    Type: AWS::Serverless::Function\n    Properties:\n      Handler: index.handler\n      Runtime: nodejs14.x\n      CodeUri: [1]

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Aindex.handler

B./src/

Cnodejs14.x

DAWS::Lambda::Function

Attempts:

3 left

💡 Hint

Common Mistakes

Putting the handler name in CodeUri

Using the runtime value in CodeUri

Using the resource type instead of CodeUri

The CodeUri property specifies the location of your Lambda function code. It should point to the folder or S3 location containing your code, such as ./src/.

2fill in blank

medium

Complete the code to specify the API event trigger for the Lambda function.

AWS

Resources:\n  MyFunction:\n    Type: AWS::Serverless::Function\n    Properties:\n      Events:\n        ApiEvent:\n          Type: Api\n          Properties:\n            Path: /hello\n            Method: [1]

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AGET

BS3

CPOST

DLambda

Attempts:

3 left

💡 Hint

Common Mistakes

Using event types like S3 or Lambda instead of HTTP methods

Confusing POST with GET when the event is a simple retrieval

The Method property defines the HTTP method that triggers the Lambda function. Common methods include GET and POST. Here, GET is used.

3fill in blank

hard

Fix the error in the SAM template to correctly define the function's memory size.

AWS

Resources:\n  MyFunction:\n    Type: AWS::Serverless::Function\n    Properties:\n      MemorySize: [1]

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A512MB

B0.5GB

C512

D512MBs

Attempts:

3 left

💡 Hint

Common Mistakes

Adding units like MB or GB in the value

Using decimal or fractional values

The MemorySize property expects an integer value representing the amount of memory in MB. So, 512 is correct, not strings with units.

4fill in blank

hard

Fill both blanks to define environment variables for the Lambda function.

AWS

Resources:\n  MyFunction:\n    Type: AWS::Serverless::Function\n    Properties:\n      Environment:\n        Variables:\n          STAGE: [1]\n          LOG_LEVEL: [2]

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A"prod"

BDEBUG

C"INFO"

Dprod

Attempts:

3 left

💡 Hint

Common Mistakes

Not quoting string values

Using unquoted bare words

Environment variable values must be strings, so they need quotes. STAGE is set to "prod" and LOG_LEVEL to "INFO".

5fill in blank

hard

Fill all three blanks to define a simple SAM template with a function, API event, and timeout.

AWS

Resources:\n  HelloWorldFunction:\n    Type: AWS::Serverless::Function\n    Properties:\n      Handler: app.lambda_handler\n      Runtime: python3.9\n      Timeout: [1]\n      Events:\n        HelloApi:\n          Type: Api\n          Properties:\n            Path: /hello\n            Method: [2]\n      CodeUri: [3]

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A10

BGET

C./hello_world/

D30

Attempts:

3 left

💡 Hint

Common Mistakes

Using strings for Timeout

Wrong HTTP method

Incorrect CodeUri path format

The Timeout is set as an integer (seconds), here 10. The API method is GET. The CodeUri points to the folder ./hello_world/ where the code is located.