Healthchecks.io + blink(1)

health-blink.sh

#!/bin/bash
# Queries the given Healthchecks.io project/tags, and sets a blink(1)
# based on the results.
#
# Suggest running once per minute via cron.

URL_F='https://healthchecks.io/badge/%s.json'
all_counts=()

blink() {
  /usr/local/bin/blink1-tool -q "$@"
}

query_healthcheck() {
  local url=$(printf "$URL_F" "${1:?}") counts i=0 arg count
  readarray -t counts < <(curl -fsS --retry 3 "$url" | jq '.down, .grace, .total')
  for arg in "${counts[@]}"; do
    all_counts[i++]=$(( arg + ${all_counts[i]:-0} ))
  done
}

for project; do
  query_healthcheck "$project"
done

if (( ${#all_counts[@]} != 3 )); then
  blink --magenta --blink 15
elif (( ${all_counts[0]} > 0 )); then # down
  blink --red
elif (( ${all_counts[1]} > 0 )); then # grace
  blink --rgb=255,175,0
else
  blink --rgb=0,100,0 --blink "${all_counts[2]}"
fi