serverless-application-model | AWS Serverless Application Model ( AWS SAM | Serverless library

 by   aws Python Version: v1.68.0 License: Apache-2.0

kandi X-RAY | serverless-application-model Summary

kandi X-RAY | serverless-application-model Summary

serverless-application-model is a Python library typically used in Serverless, DynamoDB applications. serverless-application-model has no bugs, it has no vulnerabilities, it has build file available, it has a Permissive License and it has high support. You can download it from GitHub.

This GitHub repository contains the SAM Specification, the Python code that translates SAM templates into AWS CloudFormation stacks and lots of example applications. In the words of SAM developers:.

            kandi-support Support

              serverless-application-model has a highly active ecosystem.
              It has 9038 star(s) with 2336 fork(s). There are 297 watchers for this library.
              It had no major release in the last 12 months.
              There are 119 open issues and 1168 have been closed. On average issues are closed in 204 days. There are 5 open pull requests and 0 closed requests.
              It has a negative sentiment in the developer community.
              The latest version of serverless-application-model is v1.68.0

            kandi-Quality Quality

              serverless-application-model has 0 bugs and 0 code smells.

            kandi-Security Security

              serverless-application-model has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              serverless-application-model code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              serverless-application-model is licensed under the Apache-2.0 License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              serverless-application-model releases are available to install and integrate.
              Build file is available. You can build the component from source.
              Installation instructions are available. Examples and code snippets are not available.
              serverless-application-model saves you 8185 person hours of effort in developing the same functionality from scratch.
              It has 41173 lines of code, 1880 functions and 383 files.
              It has medium code complexity. Code complexity directly impacts maintainability of the code.

            Top functions reviewed by kandi - BETA

            kandi has reviewed serverless-application-model and discovered the below as its top functions. This is intended to give you an instant insight into serverless-application-model implemented functionality, and help decide if they suit your requirements.
            • Process API events
            • Returns the API resource type name
            • Get the REST API ID from the event properties
            • Add API to the Swagger definition
            • Constructs a Lambda function
            • Get runtime attribute
            • Constructs a Lambda Permission
            • Gets the policy statements
            • Validate that the SecretKeyId is of a string
            • Transform a SAM template into a CloudFormation template
            • Recursive constructor
            • Constructs an S3Location object
            • Retry decorator
            • Constructs the swagger definition
            • Decorator to measure the execution time of a function
            • Generate the swagger definition
            • Convert this transform into a CloudFormation
            • Creates a ConnectorResourceReferenceReferenceReference from obj
            • Initialize the resource policies
            • Generate OpenAPI key
            • Initialize resource before transformation
            • Serializes this event
            • Returns a Lambda Permission resource
            • Validate input parameters
            • Determine the link to the given resources
            • Initialize the SAM template
            Get all kandi verified functions for this library.

            serverless-application-model Key Features

            No Key Features are available at this moment for serverless-application-model.

            serverless-application-model Examples and Code Snippets

            troposphere - Serverless Api Backend
            Pythondot img1Lines of Code : 55dot img1License : Non-SPDX (BSD 2-Clause "Simplified" License)
            copy iconCopy
            # Converted from api_backend located at:
            from troposphere import Ref, Template
            troposphere - Serverless S3 Processor
            Pythondot img2Lines of Code : 25dot img2License : Non-SPDX (BSD 2-Clause "Simplified" License)
            copy iconCopy
            # Converted from s3_processor located at:
            from troposphere import Ref, Template
            from troposphere.s  
            troposphere - Serverless Deployment Preference
            Pythondot img3Lines of Code : 21dot img3License : Non-SPDX (BSD 2-Clause "Simplified" License)
            copy iconCopy
            # Converted from s3_processor located at:
            from troposphere import Template
            from troposphere.server  

            Community Discussions


            Is there a way to incrementally build container images with AWS SAM?
            Asked 2022-Mar-27 at 16:53

            I have created a Lambda function using AWS SAM CLI which is deployed as a container image. Problem is the requirements are downloaded every time I make a small change in the code( and run sam build. The reason can be undestood from the Dockerfile below.




            Answered 2022-Mar-27 at 16:53

            With the way docker caching works, everything after your COPY statements is invalidated in cache (assuming changing). The way dependencies are often retained in cache is by only adding what is necessary to install dependencies, installing them, and then only adding your service code once dependencies are installed. In the example below, the pip install will only run more than once if requirements.txt changes.



            YAML - Appending Content before comments/New lines
            Asked 2022-Mar-02 at 19:17

            I have the following YAML file




            Answered 2022-Mar-02 at 19:17

            Comments (and blank lines are treated as comments), in ruamel.yaml are currently (0.17) associated with a node that comes before it. In this case of a mapping comment occuring in a mapping is associated with the key.

            So what you need to do is reassociate the comment with the new key. Doing



            AWS Lambda parameter passing error | API Gateway
            Asked 2022-Feb-17 at 03:14

            I am working with a simple AWS Lambda function :



            Answered 2022-Jan-23 at 06:44

            Lambda standalone from console

            The event that you get in your lambda function from API, and the one used when you run the function from the console are different. The event from api passed to your function will have a fixed known format. But when you run the function from console, you are passing the event in the incorrect format, thus it all breaks.

            You have to ensure that your event structure used when you run the code in console matches the event structure from the API format.



            APIGateway returns `Internal server error` despite adding resource based permissions for Lambda
            Asked 2022-Feb-14 at 23:52

            I built a simple HelloWorld API using a lambda function and APIGateway. I'm using Cloudformation.

            The lambda function runs fine when I run it using aws lambda invoke.
            The API runs locally using sam local start-api.

            But when I deploy it using sam deploy (after using package of course), the API returns status code 500.

            This is the log that I get when I try to test it.



            Answered 2022-Feb-14 at 23:52

            Lambda proxy integrations should only use POST, not GET. So it should be:



            Getting access denied due to origin blocked by CORS in AWS Api-Gateway
            Asked 2022-Jan-11 at 17:19

            I have an AWS SAM template, which creates lambda function and post method in API Gateway. By default, it uses Lambda Proxy integration and it is working fine when I am testing through the PostMan tool but when I am using the API gateway URL with my sandbox app, it is displaying the following error.



            Answered 2022-Jan-11 at 17:16

            Configuration is not proper for API creation in API-Gateway in the AWS SAM template. because SAM deployment uses lambda proxy integration by default that's why in method response, there are few values required which can not be set automatically using the above configuration. So I use open API specification where I defined Rest API configuration and it is working fine without any manual intervention after deployment.

            Following configuration is fine.



            Creating Non-Proxy API Gateway for Lambda Event using SAM Template
            Asked 2021-Dec-21 at 13:16

            I followed an AWS tutorial for setting up Lambda + API Gateway using SAM Template. But the event defined under lambda template creates a Proxy integration. I followed this tutorial because I wanted to set up similar for one of my projects. I need Non-proxy integration for that specific use case. Because I have to return xml format to the client and this can be only done by modifying the Integration Response. But in proxy APIs integration response cannot be modified. I searched a lot but couldn't find an answer. For now the template.yaml looks like this



            Answered 2021-Sep-24 at 10:23

            What you seek is the "Mapping template" functionality of API Gateway. Unfortunately, there is no direct way to do it in the AWS SAM.

            But there is a way you can achieve this by leveraging the Open API support inside the AWS SAM which has a subset of API Gateway extensions. (x-amazon-API gateway-integration.requestTemplates object)



            Where are these references coming from in this AWS SAM snippet?
            Asked 2021-Dec-11 at 15:27


            Answered 2021-Dec-11 at 15:27

            This code is just a snippet from a CloudFormation template. CognitoUserPoolName and CognitoUserPoolClientName are strings which should be specified by you. One way of doing this is by passing them as parameters:



            migration AWS Lambda to graviton - property Architectures not defined
            Asked 2021-Oct-20 at 14:06

            I want use graviton with my AWS Lambda (Python). So I read AWS official docs:



            Answered 2021-Oct-20 at 14:06

            AWS Lambda on graviton need AWS SAM CLI version greater than or equal to 1.33.0



            AWS CDK - How to run API and Lambdas locally?
            Asked 2021-Oct-04 at 17:35

            edit: Turns out the solution is in the docs. I had bog standard normal 'sam' installed but I needed what they call the 'public preview version' AKA 'sam-beta-cdk'. With this installed the API can be started locally with sam-betacdk start-api and works well. While I appreciate the answers which suggest that development should be done using purely TDD I feel there is also value in this more interactive, manual mode as it permits quicker exploration of the problem space.

            I'm trying to build my first app with CDK + Typescript using API Gateway, Lambdas and DynamoDB. I have built a couple of Lambdas and deployed them and they work fine live on the web. However I don't want a minute long deploy cycle and various associated AWS costs as part of my workflow. What I want is to be able to test my API locally.

            I have struggled to find docs on how to do this. Amazon seem to recommend using the SAM CLI here so that is what I've been trying.

            The docs claim running sam local xyz runs cdk synth to make a "could assembly" in ./aws-sam/build but I see no evidence of this. Instead what I get is a complaint that sam could not find a 'template.yml'. So I manually run cdk synth > template.yml which creates one in the root folder. Then I run sam local start-api and it seems happy to start up.

            Then I try and hit my test lambda using CURL: curl '' I get {"message":"Internal server error"} and a huge ugly stack trace in the console that is running sam local start-api

            The lambda is this...



            Answered 2021-Sep-15 at 15:15

            You must be doing something wrong with your file directory. Where is your index.js located? If you generate the template.json, is the directory correct? Also in what directory do you execute the Sam local command?

            The thing with testing your serverless application is you don't have to test your full application. You need to count on AWS that API gateway, dynamodb and lambda is perfectly working. The only thing you need to test is the logic you implemented.

            In here you make sure your function prints out something and returns a 200. That's all you have to do. Look into 'jest' for testing js.

            If you want to test cdk you should into

            Also "running Aws locally" is not good practice. it's never the same as how it's running in real life aka the cloud. You use plugins for this, tools for that... Local is not the same as in the cloud.

            If you have any more questions, feel free to ask.



            AWS: Why I am unable to assign a custom domain to the nested stack?
            Asked 2021-Sep-04 at 09:18

            I am trying to integrate a custom domain to the HTTP API I am developing with AWS API Gateway and AWS Lambda. I m using the AWS SAM template. There I have a root stack and nested stacks.

            For this question I will use a code piece with a one nested stack. There, this is how I want the URL end points to be

            1. root stack -
            2. nested stack -

            Below is my code

            Root stack



            Answered 2021-Sep-04 at 09:18

            Indeed SAM always creates the domain when you specify it's name there. It stated in the docs as well.

            To get around this, you can omit the whole domain configuration in the AWS::Serverless::HttpApi resource and write the resources created by SAM yourself. So add a section with


            Community Discussions, Code Snippets contain sources that include Stack Exchange Network


            No vulnerabilities reported

            Install serverless-application-model

            To get started with building SAM-based applications, use the SAM CLI. SAM CLI provides a Lambda-like execution environment that lets you locally build, test, debug, and deploy applications defined by SAM templates. Next Steps: Learn to build a more complex serverless application. Detailed References: Explains SAM commands and usage in depth.
            Install SAM CLI
            Build & Deploy a "Hello World" Web App
            Install AWS Toolkit to use SAM with your favorite IDEs.
            Extract text from images and store in a database using Amazon S3 and Amazon Rekognition services.
            Detect when records are added to a database using Amazon DynamoDB database and asynchronous stream processing.
            CLI Commands
            SAM Template Specification
            Policy Templates


            We love our contributors ❤️ We have over 100 contributors who have built various parts of the product. Read this testimonial from @ndobryanskyy to learn more about what it was like contributing to SAM. Depending on your interest and skill, you can help build the different parts of the SAM project;. Make pull requests, report bugs, and share ideas to improve the full SAM template specification. Source code is located on GitHub at awslabs/serverless-application-model. Read the SAM Specification Contributing Guide to get started. Add new commands or enhance existing ones, report bugs, or request new features for the SAM CLI. Source code is located on GitHub at awslabs/aws-sam-cli. Read the SAM CLI Contributing Guide to get started. SAM Developer Guide provides comprehensive getting started guide and reference documentation. Source code is located on GitHub at awsdocs/aws-sam-developer-guide. Read the SAM Documentation Contribution Guide to get started.
            Find more information at:

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