(secretsmanager): Access secret string stored in secret manager from CDK

I am storing the Codestar connection string for Bitbucket in Secret manager. How can I retrieve it in the CDK app:

I am trying with:

// Get Bitbucket Connection String
const bitbucketConnectionString = Secret.fromSecretCompleteArn(this, "bitbucketConnectionString", "arn:aws:secretsmanager:us-west-2:1000000000:secret:BitbucketCloudConnection-abcdef0");


// SourceAction
const sourceAction = new BitBucketSourceAction({
    actionName: 'BitbucketSource',
    owner: 'abc',
    repo: repoName,
    output: sourceOutputArtifact,
    connectionArn: bitbucketConnectionString,
})

bitbucketConnectionString is not a string though.

1. How do I access the secret value which is actually a connectionString stored in Secret Manager.

2. What is the right way to replace region and accountId with Pseudo variables in the connection string;

   arn:aws:secretsmanager:us-west-2:1000000000㊙️BitbucketCloudConnection-abcdef0

[jogold]

// SourceAction
const sourceAction = new BitBucketSourceAction({
    actionName: 'BitbucketSource',
    owner: 'abc',
    repo: repoName,
    output: sourceOutputArtifact,
     // use it with secret name, no need for the -abcdef0 part
    connectionArn: SecretValue.fromSecretsManager('BitbucketCloudConnection').toString()
})

Just like the example in the README in core.

SecretValue is a class from @aws-cdk/core.

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