check-deploy

#!/usr/local/bin/fish

if test (count $argv) -lt 1
  echo "Usage: check_deploy <url> [seconds]"
  exit
end

function get_deployed_version --argument-names 'url'
  curl -I -s $url | grep "X-Deployed-Version"
end

# Get the URL to check
set url $argv[1]

# Default the check interval value if missing
if set -q argv[2]; or test -z argv[2]
  set check_interval $argv[2]
else
  set check_interval 5
end

set last_version (get_deployed_version $url)

while true
  set current_deployed_version (get_deployed_version $url)

  echo "Checking $url for new version"

  if [ "$current_deployed_version" != "$last_version" ]
    say "New version deployed"
    break
  end

  sleep $check_interval
end