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