Gem Validator

validate_gems.sh

#!/bin/bash

# Validate your project's gems from your gem cache against rightscale's mirror.

gem query --local --details --all | \
sed -e ':a;N;$!ba' -e 's/\n/#/g' | \
sed -e 's/##/\n/g' | \
sed -ne '/^[^[:space:]]\+ ([^)]\+)#/p' | \
while read line; do
  name="${line%% *}"
  platform="$(echo "${line}" | sed -ne '/Platform:/{s/^.*Platform: \([^#[:space:]]\+\).*$/-\1/;p}')"
  versions=( $(echo "${line}" | sed -e 's/#/\n/g' | sed -ne "/^.*\(Installed at\|([^)]\+)\): /{s/Installed at (\([^)]\+\)): /\1:/g;s/Installed at: /$(echo "${line%%#*}" | sed -e 's/^.*(\([^)]\+\)).*$/\1/'):/;s/(\([^)]\+\)): /\1:/g;p}") )
  for version in "${versions[@]}"; do
    path="${version#*:}/cache/${name}-${version%%:*}${platform}.gem"
    if [ -f "${path}" ]; then
      local="$(sha512sum "${path}" | sed -e 's/[[:space:]].*$//')"
      remote="$(curl -s "http://mirror.rightscale.com/rubygems/archive/latest/gems/${path##*/}" | sha512sum | sed -e 's/[[:space:]].*$//')"
      echo -n "${path}: "
      if [ "${local}" = "${remote}" ]; then
        echo "OK"
      else
        echo "BAD"
        exit 1
      fi
    else
      echo "NOT FOUND: ${path}" >&2
      exit 1
    fi
  done
done

exit 0