ROLE_NAME=role/deployment-role
SESSION_NAME=${STAGE}-Deploy
echo Assuming role ${ROLE_NAME} in account ${CROSS_ACCOUNT_ID} with session name ${SESSION_NAME}

if [[ "${CROSS_ACCOUNT_ID}" == "" ]]; then
  >&2 echo Error: CROSS_ACCOUNT_ID must be set. Assuming cross account role has failed!
  exit 1
else
  IMPERSONATION=$(aws sts assume-role --role-arn "arn:aws:iam::${CROSS_ACCOUNT_ID}:${ROLE_NAME}" --role-session-name ${SESSION_NAME} --output text | tail -1)
  export AWS_ACCESS_KEY_ID=$(echo $IMPERSONATION | awk '{print $2}')
  export AWS_SECRET_ACCESS_KEY=$(echo $IMPERSONATION | awk '{print $4}')
  export AWS_SESSION_TOKEN=$(echo $IMPERSONATION | awk '{print $5}')
fi