Randy Lai randy3k

Proposal: Jarl External Rule API (Plug-in Rules)

This document details the design and implementation plan for adding an External Rule API to Jarl.

The goal is to allow developers to implement custom, out-of-crate linting rules in their own wrapper binaries or libraries, depending on jarl_core as a library, without modifying Jarl's internal codebase for every domain-specific rule.

This plan assumes that all external rules only offer safe fixes (or no fixes), which allows us to simplify the integration and reuse Jarl's existing configuration-level filters.

Summary The R processx package is unable to perform non-blocking reads or polling on Windows Named Pipes when they are opened as external files. Functions that are intended to be asynchronous or non-blocking—specifically poll(), conn_read_chars(), and conn_read_lines()—behave as blocking calls that freeze the R session until data is available.

Environment

Operating System: Windows (win32)
Library: processx (R package)
Transport: Windows Named Pipes (\.\pipe\pipe_name)
Scenario: R connecting to a pipe created by an independent external process (e.g., a Node.js server).

Start G-code

G90 ; use absolute coordinates
M83 ; extruder relative mode

M140 S{first_layer_bed_temperature[0]} ; set final bed temp
M104 S{first_layer_temperature[0]} ; set final nozzle temp

G28 ; home all axis

curl -H "X-Forwarded-For: 1.2.3.4" https://example.com

doesn't work for cloudflare proxied domain if it is specifically removed.

We may be still able to "workaround" it by connecting directly to the server.

curl -H "X-Forwarded-For: 1.2.3.4" --resolve example.com:443:$SERVER_IP https://example.com

	# copy from a to b
	sudo sgdisk -R /dev/sdb /dev/sda
	# randomize guid
	sudo sgdisk -G /dev/sdb
	# inform the kernel or reboot
	sudo partprobe /dev/sdb


	sudo proxmox-boot-tool format /dev/sdb --force
	sudo proxmox-boot-tool init /dev/sdb

	import argparse
	import os
	import sys
	import zoneinfo
	from datetime import datetime
	import shutil
	import pandas as pd

	from pyicloud import PyiCloudService
	from pyicloud.exceptions import PyiCloudAPIResponseException

	import CloudFlare
	import requests

	myip = requests.get('https://api.ipify.org').content.decode('utf8')

	cf = CloudFlare.CloudFlare(token='<TOKEN>')

	zones = cf.zones.get(params={'name': '<DOMAIN>'})
	if not zones:
	raise Exception("zone not found")

	# /etc/rsyslog.d/homeassistant.conf on client
	# Enabling logging in HA
	# logger:
	# logs:
	# homeassistant.components.http.ban: warning


	if ($programname == 'homeassistant' and $msg contains 'Login attempt or request with invalid authentication') then {
	$ActionQueueFileName fwdRule1
	$ActionQueueMaxDiskSpace 1g

	# 134 = 16 * 8 + 6, i.e. facility = local0 and severity = info

	echo "<134>1 - $HOSTNAME $PROGRAMNAME - - hello world" \| nc -u -w 0 $DEST 514