#!/usr/bin/env bash

set -euo pipefail

echo never > /sys/kernel/mm/transparent_hugepage/enabled
redis-server /racket/config/redis.conf &

export PLT_INCREMENTAL_GC=1

CORES=$(("$(nproc --all)" * 1))
CONF="/racket/config/upstream.conf"

cat >"$CONF" <<EOF
upstream app {
  least_conn;
EOF

for i in $(seq 0 $CORES); do
    port=$((8081 + i))
    /racket/app "$port" &
    echo "  server unix:///racket/$port.sock;" >> "$CONF"
done

cat >>"$CONF" <<EOF
  keepalive 512;
}
EOF

for i in $(seq 0 $CORES); do
    port=$((8081 + i))
    filename="/racket/$port.ready"
    while [ ! -f "$filename" ]; do
        echo "Waiting for $filename..."
        sleep 0.25;
    done
    chmod 0777 "/racket/$port.sock"
done

export NGINX_WORKER_PROCESES=$(("$CORES" / 4))
envsubst '$NGINX_WORKER_PROCESES' < /racket/config/nginx.conf.tpl > /racket/config/nginx.conf
cat /racket/config/upstream.conf
nginx -c /racket/config/nginx.conf