DynmamoDB.sh

#!/bin/sh

set -euo pipefail

function EnableStackDynamoDbBackups {

    local CF_STACK="$1"
    local CF_REGION=${2:-eu-central-1}
    
    echo "Getting tables from the $CF_STACK stack in the $CF_REGION region."
    local CF_TABLES=$(aws cloudformation describe-stack-resources \
      --stack-name ${CF_STACK} \
      --query 'StackResources[?ResourceType == `AWS::DynamoDB::Table`].PhysicalResourceId' \
      --output text \
      --region ${CF_REGION}
    );

    if [ ${#CF_TABLES[@]} -eq 0 ]; then
        echo "Didn't found any table in ${CF_STACK}."
        return
    fi

    for TABLE in ${CF_TABLES};
    do
        echo "Enabling Backups for $TABLE"
        aws dynamodb update-continuous-backups \
            --table-name ${CF} \
            --point-in-time-recovery-specification 'PointInTimeRecoveryEnabled=true' \
            --region ${CF_REGION}
    done

}