Migrate the environment variables from one elastic beanstalk environment to another

migrate-eb-env

#!/usr/bin/env ruby

# Usage: migrate-eb-env FROM_ENV TO_ENV

from, to = ARGV
if !from || !to
  $stderr.puts "FROM_ENV and TO_ENV are required"
  exit(1)
end

raw_env = `eb printenv #{from}`.strip.gsub(' ', '').split("\n")
raw_env.shift # remove the "Environment Variables:" line
env = raw_env

# filter out secret values
env = env.select do |e|
  found = e.match(/[*]{3}/)
  if found
    puts "Secret value found=#{e}"
  end
  !found
end
# puts env

setenv = env.join(' ')
# puts "setenv=#{setenv}"
`eb setenv #{setenv} -e #{to}`