Function makeTempCredentials

src/cmap/auth/mongodb_aws.ts:147–170

(
  credentials: MongoCredentials,
  awsCredentialFetcher: AWSSDKCredentialProvider
)

}

async function makeTempCredentials(
  credentials: MongoCredentials,
  awsCredentialFetcher: AWSSDKCredentialProvider
): Promise<MongoCredentials> {
  function makeMongoCredentialsFromAWSTemp(creds: AWSTempCredentials) {
    // The AWS session token (creds.Token) may or may not be set.
    if (!creds.AccessKeyId || !creds.SecretAccessKey) {
      throw new MongoMissingCredentialsError('Could not obtain temporary MONGODB-AWS credentials');
    }

    return new MongoCredentials({
      username: creds.AccessKeyId,
      password: creds.SecretAccessKey,
      source: credentials.source,
      mechanism: AuthMechanism.MONGODB_AWS,
      mechanismProperties: {
        AWS_SESSION_TOKEN: creds.Token
      }
    });
  }
  const temporaryCredentials = await awsCredentialFetcher.getCredentials();

  return makeMongoCredentialsFromAWSTemp(temporaryCredentials);
}

function deriveRegion(host: string) {
  const parts = host.split('.');