make it bzr-buildpackage able

[apt.git] / debian / apt.cron.daily

diff --git a/debian/apt.cron.daily b/debian/apt.cron.daily
index cdb970521ec978cd4f041a0038561525ebaa26bd..cdec7eea00315e0d5c3896448498c740a37396a3 100644 (file)
--- a/debian/apt.cron.daily
+++ b/debian/apt.cron.daily
@@ -102,6 +102,96 @@ update_stamp()
     touch $stamp
 }
 
+# we check here if autoclean was enough sizewise
+check_size_constraints()
+{
+    # min-age in days
+    MaxAge=0
+    MinAge=2
+    MaxSize=0
+    CacheDir="var/cache/apt"
+    CacheArchive="archives/"
+    eval $(apt-config shell MaxAge APT::Archives::MaxAge)
+    eval $(apt-config shell MinAge APT::Archives::MinAge)
+    eval $(apt-config shell MaxSize APT::Archives::MaxSize)
+    eval $(apt-config shell Dir Dir)
+    eval $(apt-config shell CacheDir Dir::Cache)
+    eval $(apt-config shell CacheArchive Dir::Cache::archives)
+
+    # sanity check
+    if [ -z "$CacheDir" -o -z "$CacheArchive" ]; then
+       echo "empty Dir::Cache or Dir::Cache::archives, exiting"
+       exit
+    fi
+    
+    Cache="${Dir%/}/${CacheDir%/}/${CacheArchive%/}/"
+
+    # check age
+    if [ ! $MaxAge -eq 0 ] && [ ! $MinAge -eq 0 ]; then
+       find $Cache -name "*.deb"  \( -mtime +$MaxAge -and -ctime +$MaxAge \) -and -not \( -mtime -$MinAge -or -ctime -$MinAge \) -print0 | xargs -r -0 rm -f
+    elif [ ! $MaxAge -eq 0 ]; then
+       find $Cache -name "*.deb"  -ctime +$MaxAge -and -mtime +$MaxAge -print0 | xargs -r -0 rm -f
+    fi
+    
+    # check size
+    if [ ! $MaxSize -eq 0 ]; then
+       # maxSize is in MB
+       MaxSize=$(($MaxSize*1024))
+
+       #get current time
+       now=$(date --date=$(date --iso-8601) +%s)
+       MinAge=$(($MinAge*24*60*60))
+
+       # reverse-sort by mtime
+       for file in $(ls -rt $Cache/*.deb 2>/dev/null); do 
+           du=$(du -s $Cache)
+           size=${du%%/*}
+           # check if the cache is small enough
+           if [ $size -lt $MaxSize ]; then
+               break
+           fi
+
+           # check for MinAge of the file
+           if [ ! $MinAge -eq 0 ]; then 
+               # check both ctime and mtime 
+               mtime=$(stat -c %Y $file)
+               ctime=$(stat -c %Z $file)
+               if [ $mtime -gt $ctime ]; then
+                   delta=$(($now-$mtime))
+               else
+                   delta=$(($now-$ctime))
+               fi
+               #echo "$file ($delta), $MinAge"
+               if [ $delta -le $MinAge ]; then
+                   #echo "Skiping $file (delta=$delta)"
+                   break
+               fi
+           fi
+
+           # delete oldest file
+           rm -f $file
+       done
+    fi
+}
+
+# sleep for a random interval of time (default 30min)
+# (some code taken from cron-apt, thanks)
+random_sleep()
+{
+    RandomSleep=1800
+    eval $(apt-config shell RandomSleep APT::Periodic::RandomSleep)
+    if [ $RandomSleep -eq 0 ]; then
+       return
+    fi
+    if [ -z "$RANDOM" ] ; then
+        # A fix for shells that do not have this bash feature.
+       RANDOM=$(dd if=/dev/urandom count=1 2> /dev/null | cksum | cut -c"1-5")
+    fi
+    TIME=$(($RANDOM % $RandomSleep))
+    sleep $TIME
+}
+
+
 debug_echo()
 {
     # Display message if $VERBOSE >= 1
@@ -110,6 +200,8 @@ debug_echo()
     fi
 }
 
+# main
+
 # check apt-config exstance
 if ! which apt-config >/dev/null ; then
        exit 0
@@ -136,6 +228,7 @@ if [ "$VERBOSE" -ge 3 ]; then
     # trace output
     set -x
 fi
+
 # laptop check, on_ac_power returns:
 #       0 (true)    System is on main power
 #       1 (false)   System is not on main power
@@ -233,6 +326,16 @@ for x in $(seq 0 1 $((${BackupLevel}-1))); do
     eval "Back${x}=${Back}${x}/"
 done
 
+# check if we actually have to do anything
+if [ $UpdateInterval -eq 0 ] &&
+   [ $DownloadUpgradeableInterval -eq 0 ] &&
+   [ $UnattendedUpgradeInterval -eq 0 ] &&
+   [ $BackupArchiveInterval -eq 0 ] &&
+   [ $AutocleanInterval -eq 0 ]; then
+    exit 0
+fi
+
+
 # backup after n-days if archive contents changed.
 # (This uses hardlink to save disk space)
 BACKUP_ARCHIVE_STAMP=/var/lib/apt/periodic/backup-archive-stamp