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Bitrise Step to fetch secrets from AWS Secrets Manager

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Bitrise Step for AWS Secrets Manager

Bitrise Step to fetch secrets from AWS Secrets Manager.

View changelog.

Usage

Include this Step in your workflow, for example:

workflows:
  foo:
    steps:
    - [email protected]:
        inputs:
        - aws_access_key_id: $AWS_ACCESS_KEY_ID
        - aws_secret_access_key: $AWS_SECRET_ACCESS_KEY
        - aws_default_region: a-region-1
        - secret_list: |
            arn:aws:secret-1 # username # USERNAME
            arn:aws:secret-2 # password # PASSWORD
    - script@1:
        inputs:
        - content: |
            #!/bin/bash
            #
            # Access your secrets via $USERNAME and $PASSWORD

This fetches the secrets, and places the referenced values into the environment variables USERNAME and PASSWORD, which can then be used in the subsequent steps within the workflow.

Step input

Specify the list of secrets to be fetched, under the secret_list input, with each secret value's key-value pair on its own line. The format to specify each pair is:

<Secret ARN> # <JSON object key> # <Environment variable>

If your SecretString is not JSON, the <JSON object key> can be omitted with _. See the PlainText SecretString example below for more details.

JSON SecretString Example

For example, if the given the secret is JSON with an ARN arn:aws:secret-1, and a secret value:

{
  "username": "admin",
  "password": "str0ngpassword"
}

Specifying this line in the secret list:

arn:aws:secret-1 # username # USERNAME

Fetches the secret, retrieves the JSON value under the key username, and stores that value in the USERNAME environment variable. $USERNAME will now contain the value admin.

PlainText SecretString Example

If the given secret is plain text (not JSON) with an ARN arn:aws:secret-1, and the secret value:

SOME_SECRET_VALUE

Specifying this line in the secret list:

arn:aws:secret-1 # username # USERNAME

The key username is ignored and can be omitted with _. Fetches the secret, retrieves the value, and stores that value in the USERNAME environment variable. $USERNAME will now contain the value SOME_SECRET_VALUE.

Authenticating with AWS

Supply AWS credentials and region configuration via the Step's input:

workflows:
  foo:
    steps:
    - [email protected]:
        inputs:
        - aws_access_key_id: $AWS_ACCESS_KEY_ID
        - aws_secret_access_key: $AWS_SECRET_ACCESS_KEY
        - aws_default_region: a-region-1
        - secret_list: |
            ...

The credentials have to be stored in workflow secret.

You may also use an AWS named profile from shared configuration file, via aws_profile Step input:

workflows:
  foo:
    steps:
    - [email protected]:
        inputs:
        - aws_profile: some-profile   # Like this
        - secret_list: |
            ...

To assume an IAM role before fetching secrets, you may specify the role's ARN via aws_iam_role_arn input:

workflows:
  foo:
    steps:
    - [email protected]:
        inputs:
        - aws_access_key_id: $AWS_ACCESS_KEY_ID
        - aws_secret_access_key: $AWS_SECRET_ACCESS_KEY
        - aws_default_region: a-region-1
        - aws_iam_role_arn: 'arn:aws:role/some-role'  # Like this
        - secret_list: |
            secret-line-1
            secret-line-2

Development note

Ensure the following is installed:

  • Go Programming Language
  • Bitrise CLI

Setting up

  1. Clone this repository.

  2. Run go mod vendor.

  3. Create .bitrise.secrets.yml from the sample. Populate the necessary values.

  4. In bitrise.yml, under the step titled "Step Test", specify the list of secrets that you want to fetch. Update as well the subsequent script step that echoes the secrets, referencing the environment variables that you use.

  5. Run bitrise run test to test the Bitrise step.

Publishing

  1. Bump the BITRISE_STEP_VERSION in bitrise.yml.

  2. Create a new release in changelog.

  3. Make a commit.

  4. Create an annotated Git tag.

  5. Push the commits and tags.

  6. Set MY_STEPLIB_REPO_FORK_GIT_URL in local file bitrise.secrets.yml to point to your forked StepLib repository.

  7. Run bitrise run share-this-step.

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Bitrise Step to fetch secrets from AWS Secrets Manager

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