Welcome to AWS CDK Go project-animal!

This is an example project for the aws-cdk-go IaC.

NOTICE: Go support is still in Developer Preview. This implies that APIs may change while we address early feedback from the community. We would love to hear about your experience through GitHub issues.

Useful commands

• cdk deploy deploy this stack to your default AWS account/region
• cdk diff compare deployed stack with current state
• cdk synth emits the synthesized CloudFormation template
• go test run unit tests

NewApp

Initializes a CDK application. Returns an App interface:

A construct which represents an entire CDK app. This construct is normally the root of the construct tree.

You would normally define an App instance in your program's entrypoint, then define constructs where the app is used as the parent scope.

After all the child constructs are defined within the app, you should call app.synth() which will emit a "cloud assembly" from this app into the directory specified by outdir. Cloud assemblies includes artifacts such as CloudFormation templates and assets that are needed to deploy this app into the AWS cloud. See: https://docs.aws.amazon.com/cdk/latest/guide/apps.html

NewStack

Creating a new stack that is a root construct which represents a single CloudFormation stack. You can add many stacks to the same App, though you have to specify which stack to deploy when running cdk deploy.

NewTable - DynamoDB

Provides a DynamoDB table. Creating a new DynamoDSB table to hold the animals. Here is specified the Partition key that is mandatory, and also added a sort key for the name. Also, the TableName and the BillingType

LambdaFunctions - Lambda

createLambdaFunction:

The createLambdaFunction is a helper function that's return an interface of a Lambda Function, called Function. It takes the stack, name, hanler, id and a key-value map of environment variables needed for the lambda functions. Then it takes the premade binary lambda file corresponding to the name prompt in the header. Deploys a file from inside the construct library as a function. The supplied file is subject to the 4096 bytes limit of being embedded in a CloudFormation template. The construct includes an associated role with the lambda. This construct does not yet reproduce all features from the underlying resource library.

##NewGraphQL - AppSync An AppSync GraphQL API. Here we specify the name, and the GraphQL Schema located in a separate folder.

Lambdas

Adding the Lambda data sources for the GraphQL API.

Resolvers

Here we are adding a resolver to the data source. This is connecting the API to the database. And the FieldNames here need to match the names in the GraphQL schema.

Makefile

This helper file is to create and binary of the go lambda function and place in a separate bin folder.