tools/git-update-mirror

   1 #!/bin/sh
   2 #
   3 # Copyright (c) 2009 Nagios Plugins Development Team
   4 #
   5 # This program is free software: you can redistribute it and/or modify
   6 # it under the terms of the GNU General Public License as published by
   7 # the Free Software Foundation, either version 3 of the License, or
   8 # (at your option) any later version.
   9 #
  10 # This program is distributed in the hope that it will be useful,
  11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 # GNU General Public License for more details.
  14 #
  15 # You should have received a copy of the GNU General Public License
  16 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17
  18 set -e
  19 set -u
  20
  21 prefix='/home/git'
  22
  23 PATH="$prefix/opt/git/bin:/bin:/usr/bin"
  24 export PATH
  25
  26 gitnotify="$prefix/libexec/git-notify"
  27 recipient='Nagios Plugins Commit List <nagiosplug-checkins@lists.sourceforge.net>'
  28 maxcommits=100
  29 maxdiffsize=$((300 * 1024))
  30 gitweburl='http://repo.or.cz/w'
  31 tempprefix='/dev/shm'
  32 fourtyzeros=$(printf '%.40u' 0)
  33 myself=${0##*/}
  34
  35 checkrefs()
  36 {
  37         turn=$1
  38
  39         git show-ref | while read object ref
  40         do
  41                 refdir="$tempdir/${ref%/*}"
  42                 reffile="$tempdir/$ref"
  43
  44                 if [ $turn -eq 2 -a -f "$reffile" ] \
  45                     && grep "^1 $object$" "$reffile" >'/dev/null'
  46                 then    # The ref has not been modified.
  47                         rm -f "$reffile"
  48                 else
  49                         mkdir -p "$refdir"
  50                         echo "$turn $object" >>"$reffile"
  51                 fi
  52         done
  53 }
  54
  55 if [ $# -lt 1 ]
  56 then
  57         echo >&2 "Usage: $myself <repository> ..."
  58         exit 1
  59 fi
  60
  61 tempdir=$(mktemp -d "$tempprefix/$myself.XXXXXX")
  62 tempfile=$(mktemp "$tempprefix/$myself.XXXXXX")
  63 trap 'rm -rf "$tempdir" "$tempfile"' EXIT
  64
  65 for repository in "$@"
  66 do
  67         cd "$repository"
  68
  69         checkrefs 1
  70         if ! git remote update --prune >"$tempfile" 2>&1
  71         then
  72                 cat >&2 "$tempfile"
  73                 exit 1
  74         fi
  75         git fetch --quiet --tags
  76         checkrefs 2
  77
  78         find "$tempdir" -type 'f' -print | while read reffile
  79         do
  80                 ref=${reffile#$tempdir/}
  81                 old=$(awk '$1 == "1" { print $2; exit }' "$reffile")
  82                 new=$(awk '$1 == "2" { print $2; exit }' "$reffile")
  83                 old=${old:-$fourtyzeros}
  84                 new=${new:-$fourtyzeros}
  85
  86                 echo "$old" "$new" "$ref"
  87         done | $gitnotify \
  88             -m "$recipient" \
  89             -n "$maxcommits" \
  90             -s "$maxdiffsize" \
  91             -u "$gitweburl"
  92
  93         cd "$OLDPWD"
  94 done