Bash script to clear all resources / files / path of a (sub-) domain in a varnish cache.

varnishclear.sh

#/!bin/bash


cmd="sudo varnishadm -T 127.0.0.1:6082 -S /etc/varnish/secret"
site=$(echo $1 | sed -r 's|https?://||;s|/(.*)||;')
page=$(echo $1 | awk -F'/' -v OFS='/' '{sub(/https?:\/\//, ""); $1=""; print $0}')
 
if [ -z "$1" ]; then
  echo "ERROR: please provide a URL to purge.."
  echo "USAGE: "
  echo "  - clear all urls of a domain: $0 http://domain.foo "
  echo "  - clear single url: $0 http://domain.foo/path/file.suffix "
  exit 1
fi
 
if [ -z "$site" ]; then
  echo "ERROR: No valid URL"
  exit 1
fi
 
if [ -z "$page" ]; then

  echo "Purging SITE [$site] from cache"
  $cmd "ban req.http.host == $site"

else

  echo "Purging SITE [$site] PATH [$page] from cache"
  $cmd "ban req.http.host == $site && req.url ~ ^$page\$"
fi