sam build<\/em>.<\/li>\n<\/ul>\nDeploy the changes using sam deploy –guided<\/em>.<\/p>\n\n- Test with Curl or Postman:<\/li>\n<\/ol>\n
\n- \u00a0 \u00a0Test the API by sending requests to the deployed endpoint using tools like Curl or Postman.<\/li>\n<\/ul>\n
<\/p>\n
Adding New Lambda Functions:<\/h3>\n\n- Create Empty Constructor:<\/li>\n<\/ol>\n
\n- \u00a0 To add additional functions to the same class file, create an empty constructor in the class.<\/li>\n<\/ul>\n
\n- Add New Function Block to the Template:<\/li>\n<\/ol>\n
\n- \u00a0 \u00a0Add a new function block to the SAM template for each additional function.<\/li>\n
- \u00a0 \u00a0Specify the CodeUri<\/em>, Handler<\/em>, Runtime<\/em>, MemorySize<\/em>, Environment variables, and any required policies.<\/li>\n<\/ul>\n
<\/p>\n
Adding Authentication with Cognito:<\/h3>\n\n- Create Cognito User in the Template:<\/li>\n<\/ol>\n
\n- \u00a0 \u00a0Add a parameter for the email address of the created user in the SAM template.<\/li>\n
- \u00a0 \u00a0Include a UserPoolUser<\/em> resource with the desired properties.<\/li>\n<\/ul>\n
\n- Deploy with Parameter Override:<\/li>\n<\/ol>\n
\n- \u00a0 \u00a0Deploy the template with the CognitoUserEmail parameter override using sam deploy –parameter-overrides CognitoUserEmail=email@example.com<\/em>.<\/li>\n
- \u00a0 \u00a0This will email a password to the user specified in the parameter.<\/li>\n<\/ul>\n
\n- Initiate Auth Response and Obtain IdToken:<\/li>\n<\/ol>\n
\n- \u00a0 \u00a0Use the AWS CLI command aws cognito-idp admin-initiate-auth<\/em> to get the session token.<\/li>\n
- \u00a0 \u00a0Respond to the challenge to change the password and obtain the IdToken.<\/li>\n<\/ul>\n
\n- Test Authentication:<\/li>\n<\/ol>\n
\n- \u00a0 \u00a0Use the obtained IdToken<\/em> to make authenticated requests to the API using tools like Curl.<\/li>\n<\/ul>\n
<\/p>\n
Adding DynamoDB Integration to Lambda:<\/h3>\n\n- Install Required Packages:<\/li>\n<\/ol>\n
\n- \u00a0 \u00a0Install the AWSSDK.SSO, AWSSDK.SSOOIDC<\/em>, and AWSSDK.SecurityToken<\/em> packages (required for local development).<\/li>\n<\/ul>\n
\n- Batch Writing Data to DynamoDB:<\/li>\n<\/ol>\n
\n- \u00a0 \u00a0Convert JSON data to DynamoDB format using the aws dynamodb batch-write-item<\/em> command.<\/li>\n<\/ul>\n
<\/p>\n
Conclusion:<\/h2>\n
By leveraging a serverless stack of SAM, Lambda, API Gateway, DynamoDB, Cognito, and the OpenAPI standard you can enjoy the benefits of serverless computing in reduced operational overhead, automatic scaling and pay-as-you-go pricing, allowing you to focus more on innovation and less on infrastructure management.<\/p>\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
Introduction: In 2024, an AWS serverless architecture continues to be a popular choice for building scalable and cost-effective applications. With a service stack using SAM (AWS Serverless Application Model), AWS Lambda,\u00a0 API Gateway, DynamoDB, Cognito, and OpenAPI standard; developers can create serverless solutions with ease. This guide will walk you through the process of setting […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[12,13],"class_list":["post-4","post","type-post","status-publish","format-standard","hentry","category-tech","tag-aws","tag-serverless"],"_links":{"self":[{"href":"https:\/\/passerbliss.com\/index.php\/wp-json\/wp\/v2\/posts\/4","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/passerbliss.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/passerbliss.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/passerbliss.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/passerbliss.com\/index.php\/wp-json\/wp\/v2\/comments?post=4"}],"version-history":[{"count":3,"href":"https:\/\/passerbliss.com\/index.php\/wp-json\/wp\/v2\/posts\/4\/revisions"}],"predecessor-version":[{"id":18,"href":"https:\/\/passerbliss.com\/index.php\/wp-json\/wp\/v2\/posts\/4\/revisions\/18"}],"wp:attachment":[{"href":"https:\/\/passerbliss.com\/index.php\/wp-json\/wp\/v2\/media?parent=4"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/passerbliss.com\/index.php\/wp-json\/wp\/v2\/categories?post=4"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/passerbliss.com\/index.php\/wp-json\/wp\/v2\/tags?post=4"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}