Using aws kms with codecommit

Question

Pulumi · Accepted Answer

AWS Key Management Service (KMS) is a managed service that makes it easy for you to create and control the encryption keys used to encrypt your data. The AWS CodeCommit service is a source control service hosted by AWS that you can use to privately store and manage assets (such as documents, source code, and binary files) in the cloud.

When using AWS KMS with AWS CodeCommit, you generally want to ensure that your repositories are encrypted at rest using encryption keys that you control. AWS KMS allows you to do this by creating a Customer Master Key (CMK) which can then be used with AWS CodeCommit.

Below is a Pulumi TypeScript program that sets up an AWS CodeCommit repository with encryption using an AWS KMS key. The program will perform the following tasks:

1. Create a new AWS KMS key that will be used to encrypt the data at rest.
2. Create a policy for the key that ensures only authorized users and services can use it.
3. Create an AWS CodeCommit repository using the KMS key that was just created for encryption.

```typescript
import * as aws from "@pulumi/aws";

// Create a new KMS Customer Master Key (CMK)
const codeCommitKmsKey = new aws.kms.Key("codeCommitKmsKey", {
    description: "KMS key for CodeCommit repository encryption",
    policy: JSON.stringify({
        Version: "2012-10-17",
        Statement: [{
            Sid: "Enable IAM User Permissions",
            Effect: "Allow",
            Principal: {
                AWS: "arn:aws:iam::ACCOUNT-ID-WITHOUT-HYPHENS:user/User-Name"
            },
            Action: "kms:*",
            Resource: "*",
        }],
    }),
});

// Create a CodeCommit repository that is encrypted with the KMS key
const codeCommitRepo = new aws.codecommit.Repository("codeCommitRepo", {
    repositoryName: "my-codecommit-repo",
    encryptionConfiguration: {
        encryptionType: "KMS",
        kmsKey: codeCommitKmsKey.id,
    },
});

export const repositoryName = codeCommitRepo.name;
export const repositoryCloneUrlHttp = codeCommitRepo.cloneUrlHttp;
```

In the above program:

- We import the AWS module for Pulumi to interact with AWS services.
- We create an AWS KMS Key resource for the encryption of our CodeCommit repository data. We attach a policy to this key to define permissions, making sure to replace `ACCOUNT-ID-WITHOUT-HYPHENS` with your actual AWS account ID and `User-Name` with your IAM user name. This policy is crafted to give full control over the key to the specified user.
- We then create a CodeCommit repository with the `encryptionConfiguration` block, referring to the KMS key we created earlier.

Make sure to replace the placeholder strings with actual values for your AWS account ID and IAM user name in the policy JSON. These are necessary to define who gets access rights over the KMS key.

After you run this program with Pulumi, it will output the repository name and the HTTP clone URL of your CodeCommit repository, which you can then use to clone and interact with using Git.

To deploy this program, you would need Pulumi CLI and AWS CLI set up, and appropriate AWS credentials configured. Once everything is set up, you can run `pulumi up` to create the resources.