Serverless Application Model

前回に続いて、Lambda関数の実行を今回はSAM（Serverless Application Modelを使って試しました。（SAMを使うためには、AWSのアカウントが必要だと思っていましたが、なくてもローカル実行はできるのですね）

環境）　DockerDesktop & M2　Mac

NodeJSのインストール　

brew install nodebrew

バージョン確認

nodebrew -v

nodebrew 1.2.0

インストール可能なNode.jsの確認

nodebrew ls-remote

ダウンロードするディレクトリ作成

mkdir -p ~/.nodebrew/src

Node.jsインストール

nodebrew install-binary v18.12.1
nodebrew use v18.12.1

インストールされたNode.jsの確認

nodebrew ls

echo ‘export PATH=$HOME/.nodebrew/current/bin:$PATH’ >> ~/.zshrc

node -v

v18.12.1

AWS SAMのインストール

brew install aws-sam-cli

SAM バージョン確認　（AWS CLI は不要）

sam –version

SAM CLI, version 1.90.0

SAMLの初期化からlambdaHandlerの実行（前回と同様呼び出しによるものとサーバを通したもの）

hello-world/app.mjs

export const lambdaHandler = async (event, context) => {
    try {
        return {
            'statusCode': 200,
            'body': JSON.stringify({
                message: 'hello world',
            })
        }
    } catch (err) {
        console.log(err);
        return err;
    }
};

export const lambdaHandler = async (event, context) => {

try {

return {

'statusCode': 200,

'body': JSON.stringify({

message: 'hello world',

})

}

} catch (err) {

console.log(err);

return err;

}

};

sam-cliをnodeからインストールする方法もあったため、試しましたがcpuがarmであることで失敗しました。
node.jsの対応バージョンも変わったりと、この時点での環境を抑えておく意味で、書留めておきます。

参考）　※情報が古いものもありますが、考え方を参考にさせていただきました。
https://masanyon.com/node-js-npm-cli-command-node-package-manager/
https://zenn.dev/masatto16/articles/bf7110a1012b40
https://dev.classmethod.jp/articles/20170816-sam-local/

template.yaml

AWSTemplateFormatVersion: '2010-09-09'
Transform: AWS::Serverless-2016-10-31
Description: >
  sam-app

  Sample SAM Template for sam-app

# More info about Globals: https://github.com/awslabs/serverless-application-model/blob/master/docs/globals.rst
Globals:
  Function:
    Timeout: 3

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.lambdaHandler
      Runtime: nodejs18.x
      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

Outputs:
  # ServerlessRestApi is an implicit API created out of Events key under Serverless::Function
  # Find out more about other implicit resources you can reference within SAM
  # https://github.com/awslabs/serverless-application-model/blob/master/docs/internals/generated_resources.rst#api
  HelloWorldApi:
    Description: "API Gateway endpoint URL for Prod stage for Hello World function"
    Value: !Sub "https://${ServerlessRestApi}.execute-api.${AWS::Region}.amazonaws.com/Prod/hello/"
  HelloWorldFunction:
    Description: "Hello World Lambda Function ARN"
    Value: !GetAtt HelloWorldFunction.Arn
  HelloWorldFunctionIamRole:
    Description: "Implicit IAM Role created for Hello World function"
    Value: !GetAtt HelloWorldFunctionRole.Arn

AWSTemplateFormatVersion: '2010-09-09'

Transform: AWS::Serverless-2016-10-31

Description: >

sam-app

Sample SAM Template for sam-app

# More info about Globals: https://github.com/awslabs/serverless-application-model/blob/master/docs/globals.rst

Globals:

Function:

Timeout: 3

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.lambdaHandler

Runtime: nodejs18.x

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

Outputs:

# ServerlessRestApi is an implicit API created out of Events key under Serverless::Function

# Find out more about other implicit resources you can reference within SAM

# https://github.com/awslabs/serverless-application-model/blob/master/docs/internals/generated_resources.rst#api

HelloWorldApi:

Description: "API Gateway endpoint URL for Prod stage for Hello World function"

Value: !Sub "https://${ServerlessRestApi}.execute-api.${AWS::Region}.amazonaws.com/Prod/hello/"

HelloWorldFunction:

Description: "Hello World Lambda Function ARN"

Value: !GetAtt HelloWorldFunction.Arn

HelloWorldFunctionIamRole:

Description: "Implicit IAM Role created for Hello World function"

Value: !GetAtt HelloWorldFunctionRole.Arn

events/event.json

{
  "body": "{\"message\": \"hello world\"}",
  "resource": "/{proxy+}",
  "path": "/path/to/resource",
  "httpMethod": "POST",
  "isBase64Encoded": false,
  "queryStringParameters": {
    "foo": "bar"
  },
  "pathParameters": {
    "proxy": "/path/to/resource"
  },
  "stageVariables": {
    "baz": "qux"
  },
  "headers": {
    "Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8",
    "Accept-Encoding": "gzip, deflate, sdch",
    "Accept-Language": "en-US,en;q=0.8",
    "Cache-Control": "max-age=0",
    "CloudFront-Forwarded-Proto": "https",
    "CloudFront-Is-Desktop-Viewer": "true",
    "CloudFront-Is-Mobile-Viewer": "false",
    "CloudFront-Is-SmartTV-Viewer": "false",
    "CloudFront-Is-Tablet-Viewer": "false",
    "CloudFront-Viewer-Country": "US",
    "Host": "1234567890.execute-api.us-east-1.amazonaws.com",
    "Upgrade-Insecure-Requests": "1",
    "User-Agent": "Custom User Agent String",
    "Via": "1.1 08f323deadbeefa7af34d5feb414ce27.cloudfront.net (CloudFront)",
    "X-Amz-Cf-Id": "cDehVQoZnx43VYQb9j2-nvCh-9z396Uhbp027Y2JvkCPNLmGJHqlaA==",
    "X-Forwarded-For": "127.0.0.1, 127.0.0.2",
    "X-Forwarded-Port": "443",
    "X-Forwarded-Proto": "https"
  },
  "requestContext": {
    "accountId": "123456789012",
    "resourceId": "123456",
    "stage": "prod",
    "requestId": "c6af9ac6-7b61-11e6-9a41-93e8deadbeef",
    "requestTime": "09/Apr/2015:12:34:56 +0000",
    "requestTimeEpoch": 1428582896000,
    "identity": {
      "cognitoIdentityPoolId": null,
      "accountId": null,
      "cognitoIdentityId": null,
      "caller": null,
      "accessKey": null,
      "sourceIp": "127.0.0.1",
      "cognitoAuthenticationType": null,
      "cognitoAuthenticationProvider": null,
      "userArn": null,
      "userAgent": "Custom User Agent String",
      "user": null
    },
    "path": "/prod/path/to/resource",
    "resourcePath": "/{proxy+}",
    "httpMethod": "POST",
    "apiId": "1234567890",
    "protocol": "HTTP/1.1"
  }
}

{

"body": "{\"message\": \"hello world\"}",

"resource": "/{proxy+}",

"path": "/path/to/resource",

"httpMethod": "POST",

"isBase64Encoded": false,

"queryStringParameters": {

"foo": "bar"

"pathParameters": {

"proxy": "/path/to/resource"

"stageVariables": {

"baz": "qux"

"headers": {

"Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8",

"Accept-Encoding": "gzip, deflate, sdch",

"Accept-Language": "en-US,en;q=0.8",

"Cache-Control": "max-age=0",

"CloudFront-Forwarded-Proto": "https",

"CloudFront-Is-Desktop-Viewer": "true",

"CloudFront-Is-Mobile-Viewer": "false",

"CloudFront-Is-SmartTV-Viewer": "false",

"CloudFront-Is-Tablet-Viewer": "false",

"CloudFront-Viewer-Country": "US",

"Host": "1234567890.execute-api.us-east-1.amazonaws.com",

"Upgrade-Insecure-Requests": "1",

"User-Agent": "Custom User Agent String",

"Via": "1.1 08f323deadbeefa7af34d5feb414ce27.cloudfront.net (CloudFront)",

"X-Amz-Cf-Id": "cDehVQoZnx43VYQb9j2-nvCh-9z396Uhbp027Y2JvkCPNLmGJHqlaA==",

"X-Forwarded-For": "127.0.0.1, 127.0.0.2",

"X-Forwarded-Port": "443",

"X-Forwarded-Proto": "https"

"requestContext": {

"accountId": "123456789012",

"resourceId": "123456",

"stage": "prod",

"requestId": "c6af9ac6-7b61-11e6-9a41-93e8deadbeef",

"requestTime": "09/Apr/2015:12:34:56 +0000",

"requestTimeEpoch": 1428582896000,

"identity": {

"cognitoIdentityPoolId": null,

"accountId": null,

"cognitoIdentityId": null,

"caller": null,

"accessKey": null,

"sourceIp": "127.0.0.1",

"cognitoAuthenticationType": null,

"cognitoAuthenticationProvider": null,

"userArn": null,

"userAgent": "Custom User Agent String",

"user": null

"path": "/prod/path/to/resource",

"resourcePath": "/{proxy+}",

"httpMethod": "POST",

"apiId": "1234567890",

"protocol": "HTTP/1.1"

}