80 lines
2.4 KiB
Bash
Executable File
80 lines
2.4 KiB
Bash
Executable File
#!/bin/bash
|
|
# Parse Epson ET-2720 metrics from web interface
|
|
#
|
|
# Copyright (C) 2021 Mike Gerwitz
|
|
#
|
|
# This program is free software: you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation, either version 3 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
#
|
|
# This will produce `printer_ink_level` and `printer_pages_count` metrics.
|
|
#
|
|
# Note that this script is hardly robust and relies on many different
|
|
# assumptions about the strucutre of the sloppy HTML on the page, beacuse
|
|
# I do not permit the printer to access the Internet, and therefore the
|
|
# firmware can never upgrade and make changes to the layout of this page.
|
|
# Consequently, you may find that this script does not work for your
|
|
# printer, even if it is the same model.
|
|
|
|
cd "$(dirname "$0")"
|
|
|
|
et-product-status()
|
|
{
|
|
wget -qO- "$1/PRESENTATION/ADVANCED/INFO_PRTINFO/TOP"
|
|
}
|
|
|
|
et-usage-status()
|
|
{
|
|
wget -qO- "$1/PRESENTATION/ADVANCED/INFO_MENTINFO/TOP"
|
|
}
|
|
|
|
|
|
# Add host and URL to metric.
|
|
#
|
|
# WARNING: This does _not_ sanitize the URL; do not include double quotes.
|
|
add-host()
|
|
{
|
|
local -r url="${1?Missing URL}"
|
|
|
|
sed 's|}|, url="'"$url"'", model="ET-2720"}|; s/{, /{/'
|
|
}
|
|
|
|
|
|
main()
|
|
{
|
|
local url="${1?Missing Epson ET-2720 URL}"
|
|
url="${url%%/}"
|
|
|
|
local -ri start=$( date +%s%3N )
|
|
|
|
# printer_ink_level
|
|
et-product-status "$url" | awk -f ink.awk | add-host "$url"
|
|
|
|
# printer_pages_count
|
|
et-usage-status "$url" | awk -f usage.awk | add-host "$url"
|
|
|
|
local -ri end=$( date +%s%3N )
|
|
local -ri duration_s=$(( ( end - start ) / 1000 ))
|
|
local -ri duration_ms=$(( ( end - start ) % 1000 ))
|
|
|
|
echo '# HELP printer_scrape_time_seconds Timestamp of last scrape.'
|
|
echo '# TYPE printer_scrape_time_seconds counter'
|
|
echo "printer_scrape_time_seconds $(date +%s)"
|
|
|
|
echo '# HELP printer_scrape_duration_seconds Number of seconds spent scraping data from web interface.'
|
|
echo '# TYPE printer_scrape_duration_seconds gauge'
|
|
printf 'printer_scrape_duration_seconds %0.3f\n' "$duration_s.$duration_ms"
|
|
}
|
|
|
|
main "$@"
|
|
|