Matt Keranen kmatt

Spike

I looked into the state of GraalVM and Clojure and wrote some small work-related scripts.

Downloaded GraalVM and set $GRAALVM_HOME
Found two main libraries for building GraalVM CLIs - https://github.com/luchiniatwork/cambada#packaging-as-a-native-image and https://github.com/taylorwood/clj.native-image (or https://github.com/taylorwood/lein-native-image for the lein equivalent). I chose clj.native-image as it seemed more focused on doing one thing well.
First tried its template example which was easy to follow.
Then added a graalvm build to one of our small cli tools
Found it to be pretty straightforward except for a stdout flushing issue that was trivial to fix

	#!/bin/sh

	colors=($(xrdb -query \| sed -n 's/.*color\([0-9]\)/\1/p' \| sort -nu \| cut -f2))

	echo -e "\e[1;37m
	Black Red Green Yellow Blue Magenta Cyan White
	───────────────────────────────────────────────────────────────────────────────────────\e[0m"
	for i in {0..7}; do echo -en "\e[$((30+$i))m █ ${colors[i]} \e[0m"; done
	echo
	for i in {8..15}; do echo -en "\e[1;$((22+$i))m █ ${colors[i]} \e[0m"; done

	Xft.dpi: 192
	URxvt.font: xft:FiraMono-Regular:size=10
	Xft.autohint: 0
	Xft.lcdfilter: lcddefault
	Xft.hintstyle: hintfull
	Xft.hinting: 1
	Xft.antialias: 1
	Xft.rgba: rgb

	"""
	Compare two Excel sheets
	Inspired by https://pbpython.com/excel-diff-pandas-update.html
	For the documentation, download this file and type:
	python compare.py --help
	"""

	import argparse

	import pandas as pd

	# http://dwm.suckless.org/
	# s/dnf/rpm-ostree/ for Silverblue

	# Xorg requirements
	sudo dnf install xorg-x11-server-Xorg xorg-x11-drv-evdev xorg-x11-xinit xorg-x11-xinit-session xterm lightdm

	# Build deps
	sudo dnf install git make automake gcc gcc-c++
	sudo dnf install libX11-devel libXft-devel libXinerama-devel libXrandr-devel

	obj = json.loads(json.dumps(js), object_hook=lambda x: Namespace(**x))

	js = vars(obj) # obj.__dict__

	# https://github.com/docker/for-linux/issues/123#issuecomment-346546953

	ip link add name docker0 type bridge
	ip addr add dev docker0 172.17.0.1/16

	# Configure node_exporter to start with --collector.processes --collector.textfile.directory=/var/lib/node_exporter

	# Allow system information to be queried without a Tableau user
	$ tsm configuration set -k wgserver.systeminfo.allow_referrer_ips -v {node_exporter host IP}

	# Script to populate a text file with service status and count
	$ cat << EOM >> /usr/local/bin/node_tableau_services
	curl -s http://{Tableau Server Host}:/admin/systeminfo.xml \| awk '/worker=/ { gsub(/[<\/>]/, "", $0); sub(/:[0-9]+/, "", $2); p["tableau_server_process_status {"$2 ",process=\"" $1 "\"," $3 "}"]++ } END { for (i in p) print i, p[i] }' > /tmp/tableau_services
	mv -f /tmp/tableau_services /var/lib/node_exporter/tableau_services.prom
	EOM