#!/usr/bin/env bash
# Stop every process in the module.
#
# Two rules, both learned the hard way while building this repository:
#
#  1. Match the MAIN CLASS, never 'spring-boot' or 'java'. `pkill -f spring-boot` also matches
#     the shell command line that launched the application, so it kills your own shell.
#
#  2. Restrict the match to processes that are actually a JVM, and exclude this script and its
#     parent. A bracketed pattern like '[A]uthServerApplication' stops the pattern matching the
#     grep itself - but it does NOT stop it matching an ancestor shell whose command line
#     happens to contain that string, which is exactly what happens when you paste a here-doc
#     containing the class name into a terminal and then run this script from it. The victim
#     process dies with exit 137 and no output, which is a memorable afternoon.
set -eu
SELF=$$
PARENT=$PPID
ps -eo pid,ppid,comm,args | awk -v self="$SELF" -v parent="$PARENT" '
  $1 != self && $1 != parent && $3 ~ /^java/ && $0 ~ /com\.ankurm\.s2s\./ { print $1 }
' | while read -r pid; do
  kill -9 "$pid" 2>/dev/null || true
done
sleep 1