AWS: Calculate the size of all ECR repositories

aws_ecr_stats.sh

repos=""
sizes=""
name_lens=""
image_counts=""

# Check if user is logged in
if ! aws sts get-caller-identity &> /dev/null; then
  echo "ERROR: Seems like your SSO session is invalid. Please run"
  printf "\n  $ aws sso login\n\n"
  echo "before you run the script."
  exit 1
fi

data=$(aws ecr describe-repositories --output json | jq .repositories)
repo_count=$(echo $data | jq length)
index=1
for name in $(echo $data | jq -r .[].repositoryName); do
  # Progress
  echo -en "\033[K"
  echo -n "[$index/$repo_count] GET $name" $'\r'

  # Get repo images
  repo_images=$(aws ecr describe-images --repository-name "$name" --output json)
  
  # Get size
  size=$(echo $repo_images | jq .imageDetails[].imageSizeInBytes | awk '{s+=$1}END{OFMT="%.0f";print s}')
  
  # Get image count
  image_count=$(echo $repo_images | jq '.imageDetails | length')

  if [ -n "$size" ]; then
    raw_size="$size"
    size=$(numfmt --to=iec --suffix=B --format "%.2f" $size)
  else
    raw_size="0"
    size="<no-images>"
  fi
  repos="${repos}$name $size $image_count\n"
  sizes="${sizes}$raw_size\n"
  name_lens="${name_lens}${#name}\n"
  image_counts="${image_counts}$image_count\n"
  
  index=$(expr $index + 1)
done

# Sort repos by size
repos=$(printf "$repos" | sort -k2 -h)

# Add separator before total
max_name_len=$(printf $name_lens | sort -n | tail -1)
repos="${repos}\n$(printf -- '-%.0s' $(seq ${max_name_len})) -------- --------\n"

# Add total size and image count
total_size=$(printf $sizes | awk '{s+=$1}END{OFMT="%.0f";print s}')
total_images=$(printf $image_counts | awk '{s+=$1}END{print s}')
repos="${repos}TOTAL $(numfmt --to=iec --suffix=B --format "%.2f" $total_size) $total_images\n"

# Print final table
printf "REPOSITORY SIZE IMAGE_COUNT\n$repos" | awk '
BEGIN {
    FS=" ";
    OFS="\t";
}
{
    if (NR == 1) {
        header1 = $1;
        header2 = $2;
        header3 = $3;
    } else {
        $2 = sprintf("%10s", $2);
        $3 = sprintf("%11s", $3);
    }
    print $0;
}' | column -t

Great script to quickly have a view on ECR status!