aws-cdk-examples | Example projects using the AWS CDK | Learning library
kandi X-RAY | aws-cdk-examples Summary
kandi X-RAY | aws-cdk-examples Summary
This repo is our official list of CDK example code. The repo is subdivided into sections for each language (see "Examples"). Each language has its own subsection of examples with the ultimate aim of complete language parity (same subset of examples exist in each language). These examples each provide a demonstration of a common service implementation, or infrastructure pattern that could be useful in your use of the CDK for building your own infrastructure. We welcome contributions to this repo in the form of fixes to existing examples or addition of new examples. For more information on contributing, please see the CONTRIBUTING guide. This is considered an intermediate learning resource and should typically be referenced after reading the Developer Guide or CDK Workshop (please see Learning Resources for more information on these resources).
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Top functions reviewed by kandi - BETA
- Build the site
- Creates an ACM certificate
- Create a Route53 record
- Return a Route53 hosted zone
- Invokes callback on event type
- Create a new resource
- Event handler
- Event handler for deletion
- Processes a lambda event
- Create an application version
- Returns the health of an Environment
- Describe application version
- Handler for GET requests
- Generate a layer function
- Upload user s metadata
- Upload an image
- Creates a list of rules from a list of rules
- Append new snippet
- Start a new snippet
- Return the contents of a file
- Read a short URL
- Echo the given argument
- Close the end of the file
- Make a list of rules from a list of rules
- Create a new URL in DynamoDB
aws-cdk-examples Key Features
aws-cdk-examples Examples and Code Snippets
Community Discussions
Trending Discussions on aws-cdk-examples
QUESTION
I am having some trouble getting all items from a DynamoDB table. I am following the example from the AWS GitHub repo. Here is the code I have
...ANSWER
Answered 2022-Mar-26 at 15:34You missed .promise(), so it don't await until the request is completed.
QUESTION
TL;DR: What is the purpose and function of prepare(): void method of AWS CDK's Construct class? How and when am I supposed to use/avoid it?
The documentation on prepare() says:
...
ANSWER
Answered 2021-Nov-23 at 15:50I've got an answer from one of the contributors of aws-cdk.
As they have pointed out, prepare() is deprecated, and it is about to be removed anyway, so no point in using it:
I think the most important implication is constructs you add during the execution of this method will themselves not be
prepared (so you shouldn't be adding any constructs that rely on that happening).
prepareis a method of last resort, for constructs to fix up their own state just before rendering in some conditions (for example, to render default values if certain mutator methods did not get called).
prepare()is deprecated and will be removed in v2. I would not suggest relying on it.
As for setting up everything in the constructor, the advice was to treat inner constructs' definitions as part of the initialization of a given parent construct:
I understand you might have psychological aversion to doing a lot of work in the constructor. Try to see construct definitions like a set of declarations that just happen to produce an initialized object (where our Stack definitely has a
Tableand the compiler can verify that this member got assigned in the constructor so we can rely on this in the rest of the program).
QUESTION
What is the purpose of the app.synth() line in AWS CDK applications? For example it can be seen here on line 29:
https://github.com/aws-samples/aws-cdk-examples/blob/master/typescript/ecs/fargate-application-load-balanced-service/index.ts
I have looked at the CDK docs but I cannot find what the actual purpose of that function is. As I understand it, the app is automatically synthesized upon cdk deploy or cdk synth. I also took the example shown in repo linked above, commented out the app.synth() line, deployed it, and it seemed to work as expected. Therefore I'm wondering if I'm missing something when it comes to the purpose of app.synth()
ANSWER
Answered 2021-Jul-20 at 20:58cdk synth only constructs your CloudFormation template. It does not deploy (create actual resources) it to AWS. You can take the template constructed, deploy it manually in CFN console, edit or inspect.
cdk deploy is going to construct the template and deploy it to AWS as well.
People use synth with deploy because it is a good practice:
It is optional (though good practice) to synthesize before deploying. The AWS CDK synthesizes your stack before each deployment.
QUESTION
I've been experimenting with using the new AWS CDK pipelines construct (https://docs.aws.amazon.com/cdk/api/latest/docs/pipelines-readme.html), and have successfully setup a couple of projects, including following the blog post announcement here: https://aws.amazon.com/blogs/developer/cdk-pipelines-continuous-delivery-for-aws-cdk-applications/.
However, as soon as I try to add a dependency to my lambdas the build fails with a
lib/lambda/handler.ts(2,24): error TS2307: Cannot find module 'stripe' or its corresponding type declarations.
I have installed a package.json file and the node_modules in the directory with the lambdas, tried zipping the lambdas and node_modules, tried uploading the zip file with the console, and tried getting the 'buildCommand' during the 'synthAction' step to install the dependencies. Nothing works.
The asset appears to get created in the cdk.out directory, and code changes are being uploaded, but node_modules themselves never get packaged along with the lambda functions.
I am using the 'SimpleSynthAction.standardNpmSynth' action, along with an 'npm run build' command in the 'buildCommand' step.
I've looked at Lambda can't find modules from outer folders when deployed with CDK, How to install dependencies of lambda functions upon cdk build with AWS CDK and https://github.com/aws-samples/aws-cdk-examples/issues/110#issuecomment-550506116 without luck.
What am I missing?
...ANSWER
Answered 2020-Oct-30 at 13:14Looks like the issue has to do with bundling. I abandoned the 'all-in on CDK approach' and went back to using a SAM/CDK hybrid, but this new blog post suggests bundling is the answer.
https://aws.amazon.com/blogs/devops/building-apps-with-aws-cdk/
Specifically, it references this construct, which likely would have helped in my situation: https://docs.aws.amazon.com/cdk/api/latest/docs/aws-lambda-nodejs-readme.html
Something to try in future.
QUESTION
I am trying to deploy an API Gateway with a custom domain. (no functions, just a common API Gateway that other stacks can then import and use)
bin/api-app.ts:
ANSWER
Answered 2020-Jul-01 at 12:15CDK doesn't have backwards compatibility in minor version upgrades.
That means that your cdk.Construct from package
QUESTION
Working on AWS CDK TYPESCRIPT to deploy the Beanstalk app.i was able to setup a beanstalk app using AWS CDK Typescript but could not find a way to set up it in existing VPC with high availability. this is my ebstack.ts
...ANSWER
Answered 2020-Mar-05 at 02:53For a complete list of namespaces and options:
- https://docs.aws.amazon.com/elasticbeanstalk/latest/dg/command-options-general.html
- https://docs.aws.amazon.com/elasticbeanstalk/latest/dg/command-options-specific.html
It's just as an example.
QUESTION
I'm migrating a static website hosted on Amazon S3 to use CDK for deployment, following the example. I want to redirect from www.mydomain.com to mydomain.com so I have S3 buckets for both, and the www one redirects to the apex domain. They're both fronted by CloudFront. I had all this working before using CDK, but after migrating I'm getting an AccessDenied error when accessing the www URL. The code to deploy the buckets looks like this:
ANSWER
Answered 2020-Jan-06 at 03:36I figured this out using this answer. Instead of:
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Install aws-cdk-examples
You can use aws-cdk-examples like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
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