Bitbucket pipelines integrations with AWS CodeArtifact via OIDC

[Oren Shvalb]

Hi guys,

I'm following this article to make Bitbucket pipelines work with AWS Codeartifact but having troubles with it.

I've

1. Created "Identity Provider" with URL & Audience from Bitbucket's OIDC settings.
2. Created a AWS role with AWSCodeArtifactAdminAccess permissions and associated it with the Identity Provider
3. Defined 2 Bitbucket's repository variables: AWS_REGION & AWS_ROLE_ARN.
4. Created bitbucket-pipelines.yml file that looks like this:

image:
  name: XXXXXXXXXX.dkr.ecr.us-east-2.amazonaws.com/bitbucket-docker:1.0.0
  aws:
    oidc-role: arn:aws:iam::XXXXXXXXXX:role/bitbucket-pipelines
options:
  max-time: 30 # per-step timeout in minutes
pipelines:
  branches:
    develop:
      - step:
          oidc: true
          script:
            - export AWS_WEB_IDENTITY_TOKEN_FILE=$(pwd)/web-identity-token
            - echo $BITBUCKET_STEP_OIDC_TOKEN > $(pwd)/web-identity-token
            - aws sts assume-role-with-web-identity --role-arn arn:aws:iam::XXXXXXXXXX:role/bitbucket-pipelines --role-session-name build-session  --web-identity-token "$BITBUCKET_STEP_OIDC_TOKEN" --duration-seconds 1000
            - mvn verify deploy -e -DskipTests

When I run the pipelines I can see that I'm able to access the ECR docker image, but getting 401 authentication error when trying to deploy the maven artifacts (jar file).

I'm under the impression that I don't need to call aws codeartifact get-authorization-token since I authenticate via OIDC.

Here is the logs from CloudTrail:

"eventSource": "codeartifact.amazonaws.com",
"eventName": "PublishPackageVersion",
"awsRegion": "us-east-2",
"sourceIPAddress": "35.160.177.10",
"userAgent": "Apache-Maven/3.6.3 (Java 11.0.9; Linux 5.10.101)",
"errorCode": "AccessDenied",
"errorMessage": "Unauthenticated: request did not include an Authorization header. Please provide your credentials.",

Any idea what am I missing here?

[Saxea _Flowie_]

I'm not familiar AWS CodeArtifact, but I think you need the token for Maven... The OIDC is for the AWS, not the repository, kind of how you still need a credential for DBs too.

Have you tried the using the the aws codeartifact get-authorization-token? Is it not working?

[Oren Shvalb]

Yeah,

You're right - I was missing a call to `codeartifact get-authorization-token` - so I've added a call in the script and exported a `CODEARTIFACT_AUTH_TOKEN` variable for maven to pickup by the `settings.xml` file .

```

<server>

<id>modules</id>

<username>aws</username>

<password>${env.CODEARTIFACT_AUTH_TOKEN}</password>

</server>

```

but still it doesn't work... any idea?

[Oren Shvalb]

Another question, 

In order to get temporarily CODEARTIFACT credentials I call

`aws sts assume-role-with-web-identity` with the ARN of the web-identity provider, but for the `--role-session-name` I input an arbitrary name - is that OK ?