#!/usr/bin/env bash
# Reproduces the one trap that costs the most time: a load-balanced RestClient.Builder that Eureka's own client picks up.
# Needs the system running (scripts/start.sh). Starts a second order-service on :8092 WITHOUT the @Primary plain builder,
# captures what it logs and whether it registered, then stops it. Writes output/06-eureka-lb-trap.txt.
set -uo pipefail
cd "$(dirname "$0")/.."
unset JAVA_TOOL_OPTIONS
F=output/06-eureka-lb-trap.txt
LOG=run/logs/order-service-broken.log
nohup java -Xmx200m -XX:+UseSerialGC -jar order-service/target/order-service-1.0.0.jar \
  --server.port=8092 --shop.demo.primary-builder=false > $LOG 2>&1 &
echo $! > run/order-service-broken.pid
sleep 30
{
  echo "# order-service started with --shop.demo.primary-builder=false (the only RestClient.Builder is the @LoadBalanced one)"
  echo
  echo "--- the log lines that give it away ---"
  grep -m1 "BeanCurrentlyInCreationException" $LOG | sed -E 's/^[^ ]+ +[A-Z]+ [0-9]+ --- \[[^]]*\] \[[^]]*\] \[[^]]*\] //' | cut -c1-220
  grep -m1 "No instances available for localhost" $LOG | sed -E 's/^[^ ]+ +[A-Z]+ [0-9]+ --- \[[^]]*\] \[[^]]*\] \[[^]]*\] //' | cut -c1-220
  grep -m1 "registration failed" $LOG | sed -E 's/^[^ ]+ +[A-Z]+ [0-9]+ --- \[[^]]*\] \[[^]]*\] \[[^]]*\] //' | cut -c1-220
  echo
  echo "--- is instance order-service:8092 in Eureka? ---"
  curl -s -H 'Accept: application/json' localhost:8761/eureka/apps | python3 -c '
import sys, json
ids = [i["instanceId"] for a in json.load(sys.stdin)["applications"]["application"] for i in a["instance"]]
print("order-service:8092 registered:", "order-service:8092" in ids)'
} > $F
kill "$(cat run/order-service-broken.pid)" 2>/dev/null; rm -f run/order-service-broken.pid
cat $F