Add the service-to-service module

service-to-service/scripts/stop.sh

@@ -0,0 +1,23 @@
+#!/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