iankelling.org Git - distro-setup/blob - system-status

   1 #!/bin/bash
   2 # Copyright (C) 2019 Ian Kelling
   3 # SPDX-License-Identifier: AGPL-3.0-or-later
   4
   5 # usage: runs 4 times every 15 seconds unless any args are passed, or we
   6 # are on battery power, then just runs once.
   7
   8 if [ -z "$BASH_VERSION" ]; then echo "error: shell is not bash" >&2; exit 1; fi
   9
  10 source /a/bin/errhandle/err
  11 status_file=/dev/shm/iank-status
  12
  13 shopt -s nullglob
  14 shopt -s dotglob
  15 shopt -s extglob
  16
  17 for p in ~/.gem/ruby/*/bin; do
  18   PATH="$PATH:$p"
  19 done
  20
  21
  22 verbose=false
  23 if [[ $1 ]]; then
  24   verbose=true
  25 fi
  26 v() {
  27   if $verbose; then
  28     printf "%s\n" "$*"
  29   fi
  30 }
  31 # log-once COUNT NAME [MESSAGE]
  32 lo() {
  33   /usr/local/bin/log-once "$@" | ifne mail -s "$HOSTNAME: system-status $2" root@localhost
  34 }
  35
  36 write-status() {
  37   chars=("${first_chars[@]}")
  38
  39   # clock us out in timetrap if are idle too long
  40   if [[ -e /p/.timetrap.db ]]; then
  41     export DISPLAY=:0
  42     if type -p xprintidle &>/dev/null && xidle=$(xprintidle 2>/dev/null); then
  43       if [[ $xidle == [0-9]* ]]; then
  44         sheet=$(sqlite3 /p/.timetrap.db "select sheet from entries where end is NULL;")
  45         idle=300000
  46         if [[ $sheet == w ]]; then
  47           idle=900000
  48         fi
  49         if [[ $sheet && $xidle -gt $idle ]]; then
  50           timetrap out
  51         fi
  52       fi
  53     fi
  54   fi
  55
  56   if pgrep -G iank -u iank -f 'emacs --daemon' &>/dev/null; then
  57     emacsfiles="$(emacsclient --eval "$(cat /a/bin/ds/unsaved-buffers.el)"| sed '/^"nil"$/d;s/^"(/E: /;s/)"$//')"
  58     if [[ $emacsfiles ]]; then
  59       chars+=("$emacsfiles")
  60     fi
  61   fi
  62
  63   glob=(/nocow/btrfs-stale/*)
  64   if [[ -e ${glob[0]} ]]; then
  65     chars+=("STALE")
  66   fi
  67   if [[ $(find /var/mail -type f \! -empty -print -quit) ]]; then
  68     var_mail_msg="message in /var/mail"
  69   fi
  70   lo -1 var_mail $var_mail_msg
  71   glob=(/m/md/bounces/new/*)
  72   if [[ -e ${glob[0]} ]]; then
  73     chars+=("BOUNCE")
  74     bouncemsg="message in /m/md/bounces/new"
  75   fi
  76   lo -1 bounce $bouncemsg
  77   # emails without the S (seen) flag. this only checks the last flag,
  78   # but its good enough for me.
  79   glob=(/m/md/alerts/{new,cur}/!(*,S))
  80   if [[ -e ${glob[0]} ]]; then
  81     chars+=("A")
  82   fi
  83   tmp=(/var/local/cron-errors/mailtest-check*)
  84   if (( ${#tmp[@]} )); then
  85     chars+=("MAILPING")
  86   fi
  87   tmp=(/var/local/cron-errors/mailtest-slow*)
  88   if (( ${#tmp[@]} )); then
  89     chars+=("SPAMD")
  90   fi
  91
  92   # early in install process, we dont have permission yet for exiqgrep
  93   qlen=$(/usr/sbin/exiqgrep -o 600 -c -b | awk '{print $1}') ||:
  94   if ((qlen)); then
  95     qmsg="queue length $qlen"
  96     chars+=("q $qlen")
  97   fi
  98   case $HOSTNAME in
  99     # No point in emailing about the mailq on a host where we don't
 100     # check email.
 101     $MAIL_HOST|bk)
 102       lo -120 qlen $qmsg
 103       ;;
 104   esac
 105
 106   begin=false
 107   if ! make -C /b/ds -q ~/.local/distro-begin || [[ $(<~/.local/distro-begin) != 0 ]]; then
 108     begin=true
 109   fi
 110
 111   end=false
 112   if ! make -C /b/ds -q ~/.local/distro-end || [[ $(<~/.local/distro-end) != 0 ]]; then
 113     end=true
 114   fi
 115
 116   # these conditions are so we dont have an overly verbose prompt
 117   if $begin && $end; then
 118     chars+=("D")
 119   elif $begin; then
 120     chars+=("DB")
 121   elif $end; then
 122     chars+=("DE")
 123   else
 124     f=~/.local/conflink
 125     # shellcheck disable=SC2043
 126     for _ in 1; do
 127       if [[ -e $f ]]; then
 128         now=$(date +%s)
 129         fsec=$(stat -c%Y $f)
 130         # the / 60 makes it 0-59 seconds less strict, +1 to help make sure we
 131         # dont have any false positives.
 132         fmin=$(( (fsec - now + 1 ) / 60 ))
 133         fminplus=$(( fmin + 60*24 ))
 134         # Filesystem files get copied, so find any newer than the last run.
 135         # The rest are hueristics:
 136         # Given the last time we added a file in git, is that newer than the last conflink run.
 137         # Given new files not added to git, were they modified more recently than the last conflink? but,
 138         # push their modification time back by a day so we can develop them before needing to add them to git.
 139
 140         all_dirs=({/a/bin/ds,/p/c}{/filesystem,/machine_specific/$HOSTNAME/filesystem})
 141         # This part is copied from conflink
 142         for x in /p/c/machine_specific/*.hosts /a/bin/ds/machine_specific/*.hosts; do
 143           if grep -qxF $HOSTNAME $x; then all_dirs+=( ${x%.hosts} ); fi
 144         done
 145
 146         # Just because i forget a lot, -mmin -NUM means files modified <= NUM minutes ago
 147         if (( fmin < 0 )) && [[ $(find ${all_dirs[@]} -mmin $fmin -type f -print -quit 2>/dev/null) ]]; then
 148           v conflink newer filesystem files
 149           chars+=("CONFLINK")
 150           break
 151         fi
 152
 153         for d in /a/bin/distro-setup /p/c; do
 154           cd $d
 155           if [[ ! -e .git ]]; then
 156             # some hosts i dont push all of /p/c
 157             continue
 158           fi
 159           if (( $(date -d "$(git log --diff-filter=ACR --format=%aD -1)" +%s) > fsec )); then
 160             v conflink: newer files checked in to git
 161             chars+=("CONFLINK")
 162             break
 163           fi
 164
 165           untracked=()
 166           while read -r l; do
 167             untracked+=("$l")
 168           done < <(git ls-files -o --exclude-standard)
 169           if [[ ${untracked[0]} && $(find "${untracked[@]}" -mmin $fminplus -type f -print -quit) ]]; then
 170             v conflink: untracked in $d
 171             chars+=("CONFLINK")
 172             break
 173           fi
 174         done
 175         cd /
 176
 177       fi
 178       if [[ ! -e $f || $(<$f) != 0 ]]; then
 179         v conflink: last run not found or failed
 180         chars+=("CONFLINK")
 181         break
 182       fi
 183     done
 184   fi
 185
 186   if [[ -s /var/log/exim4/paniclog ]]; then
 187     chars+=("PANIC!")
 188     # leave it up to epanic-clean to send email notification
 189   fi
 190
 191   source /a/bin/bash_unpublished/source-state
 192   if [[ $MAIL_HOST == "$HOSTNAME" ]]; then
 193     bbkmsg=
 194     if [[ $(systemctl is-active btrbk.timer) != active ]]; then
 195       chars+=("BTRBK.TIMER")
 196       bbkmsg="btrbk.timer not enabled"
 197     fi
 198     lo -960 btrbk.timer $bbkmsg
 199
 200     ## check if last snapshot was within an hour
 201     vol=o
 202     # this section generally copied from btrbk scripts, but
 203     # this part modified to speed things up by about half a second.
 204     # I'm not sure if its quite as reliable, but it looks pretty safe.
 205     # Profiled it using time and also adding to the top of the file:
 206     # set -x
 207     # PS4='+ $(date "+%2N") '
 208     # allow failure in case there are no snapshots yet.
 209     # shellcheck disable=SC2012
 210     shopt -u nullglob
 211     files=(/mnt/root/btrbk/$vol.20*)
 212     shopt -s nullglob
 213     snaps=()
 214     if (( ${#files[@]} )); then
 215       snaps=($(ls -1avdr "${files[@]}" 2>/dev/null |head -n1 || : ))
 216     fi
 217     now=$(date +%s)
 218     maxtime=0
 219     for s in ${snaps[@]}; do
 220       file=${s##*/}
 221       t=$(date -d $(sed -r  's/(.{4})(..)(.{5})(..)(.*)/\1-\2-\3:\4:\5/' <<<${file#$vol.}) +%s)
 222       if (( t > maxtime )); then
 223         maxtime=$t
 224       fi
 225     done
 226     if (( maxtime < now - 4*60*60 )); then
 227       chars+=("OLD-SNAP")
 228       snapshotmsg="/o snapshot older than 4 hours"
 229     fi
 230     lo -1 old-snapshot $snapshotmsg
 231   fi
 232
 233   cat /a/bin/bash_unpublished/source-state >$status_file
 234
 235   if [[ ${chars[*]} ]]; then
 236     echo "ps_char=\"${chars[*]} \$ps_char\"" >>$status_file
 237   fi
 238
 239 }
 240 # use this if we want to do something just once per minute
 241 first_chars=()
 242
 243 power=true
 244 if [[ -e /sys/class/power_supply/AC/online && $(</sys/class/power_supply/AC/online) == 0 ]]; then
 245   power=false
 246 fi
 247
 248 write-status
 249 if [[ $1 ]]; then
 250   cat $status_file
 251   exit 0
 252 fi
 253
 254 if ! $power; then
 255   exit 0
 256 fi
 257
 258 # about 15 minutes
 259 for ((i=1; i<=60; i++)); do
 260   sleep 15
 261   write-status
 262 done