A script for pulling an elasticbeanstalk solution name for a given runtime version

get_solution_stack_name.sh

#!/usr/bin/env bash

set -euo pipefail

MINOR_VERSION=$(awk -F. '{print $1 "." $2}' $(dirname $0)/../.ruby-version)
NAME_FILTER="{\"Type\":\"PlatformName\",\"Operator\":\"begins_with\",\"Values\":[\"Puma with Ruby ${MINOR_VERSION}\"]}"
VERSION_FILTER='{"Type":"PlatformVersion","Operator":"=","Values":["latest"]}'

PLATFORM_ARN=$(
  aws elasticbeanstalk list-platform-versions \
    --filters "[${NAME_FILTER},${VERSION_FILTER}]" \
    --query 'PlatformSummaryList[].PlatformArn' \
    --output text
)

aws elasticbeanstalk describe-platform-version \
  --platform-arn "${PLATFORM_ARN}" \
  --query PlatformDescription.SolutionStackName \
  --output text