【Lambda】SAMを使用してローカル環境でLambdaを実行する

sam init

You can preselect a particular runtime or package type when using the `sam init` experience.
Call `sam init --help` to learn more.

Which template source would you like to use?
	1 - AWS Quick Start Templates
	2 - Custom Template Location
Choice: 1

Choose an AWS Quick Start application template
	1 - Hello World Example
	2 - Data processing
	3 - Hello World Example with Powertools for AWS Lambda
	4 - Multi-step workflow
	5 - Scheduled task
	6 - Standalone function
	7 - Serverless API
	8 - Infrastructure event management
	9 - Lambda Response Streaming
	10 - Serverless Connector Hello World Example
	11 - Multi-step workflow with Connectors
	12 - GraphQLApi Hello World Example
	13 - Full Stack
	14 - Lambda EFS example
	15 - DynamoDB Example
	16 - Machine Learning
Template: 1

Use the most popular runtime and package type? (Python and zip) [y/N]: N

Which runtime would you like to use?
	1 - dotnet8
	2 - dotnet6
	3 - go (provided.al2)
	4 - go (provided.al2023)
	5 - graalvm.java11 (provided.al2)
	6 - graalvm.java17 (provided.al2)
	7 - java21
	8 - java17
	9 - java11
	10 - java8.al2
	11 - nodejs20.x
	12 - nodejs18.x
	13 - nodejs16.x
	14 - python3.9
	15 - python3.8
	16 - python3.12
	17 - python3.11
	18 - python3.10
	19 - ruby3.3
	20 - ruby3.2
	21 - rust (provided.al2)
	22 - rust (provided.al2023)
Runtime: 16

What package type would you like to use?
	1 - Zip
	2 - Image
Package type: 1

Based on your selections, the only dependency manager available is pip.
We will proceed copying the template using pip.

Would you like to enable X-Ray tracing on the function(s) in your application?  [y/N]: N

Would you like to enable monitoring using CloudWatch Application Insights?
For more info, please view https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/cloudwatch-application-insights.html [y/N]: N

Would you like to set Structured Logging in JSON format on your Lambda functions?  [y/N]: N

Project name [sam-app]:

    -----------------------
    Generating application:
    -----------------------
    Name: sam-app
    Runtime: python3.12
    Architectures: x86_64
    Dependency Manager: pip
    Application Template: hello-world
    Output Directory: .
    Configuration file: sam-app/samconfig.toml

    Next steps can be found in the README file at sam-app/README.md


Commands you can use next
=========================
[*] Create pipeline: cd sam-app && sam pipeline init --bootstrap
[*] Validate SAM template: cd sam-app && sam validate
[*] Test Function in the Cloud: cd sam-app && sam sync --stack-name {stack-name} --watch

sam-app
  ├── events
  │   └── event.json
  ├── hello_world
  │   ├── __init__.py
  │   ├── app.py
  │   ├── requirements.txt
  ├── tests
  │   ├── integration
  │   │   ├── __init__.py
  │   │   └── test_api_gateway.py 
  │   ├── unit
  │   │   ├── __init__.py
  │   │   └── test_handler.py 
  │   └── __init__.py
  ├── __init__.py
  ├── README.md
  ├── samconfig.toml
  └── template.yaml

import json

# import requests


def lambda_handler(event, context):
    return {
        "statusCode": 200,
        "body": json.dumps({
            "message": "hello world",
            # "location": ip.text.replace("\n", "")
        }),
    }

Resources:
  HelloWorldFunction:
    Type: AWS::Serverless::Function # More info about Function Resource: https://github.com/awslabs/serverless-application-model/blob/master/versions/2016-10-31.md#awsserverlessfunction
    Properties:
      CodeUri: hello_world/
      Handler: app.lambda_handler
      Runtime: python3.12
      Architectures:
        - x86_64
      Events:
        HelloWorld:
          Type: Api # More info about API Event Source: https://github.com/awslabs/serverless-application-model/blob/master/versions/2016-10-31.md#api
          Properties:
            Path: /hello
            Method: get

sam local start-api
Initializing the lambda functions containers.
Local image was not found.
Removing rapid images for repo public.ecr.aws/sam/emulation-python3.12
Building image.......................................................................................................................
Using local image: public.ecr.aws/lambda/python:3.12-rapid-x86_64.

Mounting /Users/yuya-kuchiki/Documents/lambda/sam-app/hello_world as /var/task:ro,delegated, inside runtime container
Containers Initialization is done.
Mounting HelloWorldFunction at http://127.0.0.1:3000/hello [GET]
You can now browse to the above endpoints to invoke your functions. You do not need to restart/reload SAM CLI while working on your functions, changes will be reflected
instantly/automatically. If you used sam build before running local commands, you will need to re-run sam build for the changes to be picked up. You only need to restart SAM
CLI if you update your AWS SAM template
2024-09-16 23:09:10 WARNING: This is a development server. Do not use it in a production deployment. Use a production WSGI server instead.
 * Running on http://127.0.0.1:3000
2024-09-16 23:09:10 Press CTRL+C to quit

curl http://127.0.0.1:3000/hello
{"message": "hello world"}