projects / osmrrze.git / blame
| Commit | Line | Data |
|---|---|---|
| cc9b12f0 UO |
1 | #!/bin/bash |
| 2 | ||
| 3 | # Script to delete tiles that only contain water (usually in the | |
| 4 | # middle of an ocean) in the higher numbered zoomlevels. These | |
| 5 | # are trivial to regenerate (far less than one second) at any | |
| 6 | # time. | |
| 7 | ||
| 8 | # Some settings | |
| 9 | # Minimum Zoom in which we delete | |
| 10 | MINZ=11 | |
| 11 | ||
| 12 | # Maximum Zoom in which we delete | |
| 13 | MAXZ=20 | |
| 14 | ||
| 15 | # Age in days after which we delete | |
| 16 | AGE=3 | |
| 17 | ||
| 18 | # the md5sum of a metatile containing only water? | |
| 19 | MD5OSMDE="c6501cefd852a2c5b16f297948ca309c" | |
| 20 | MD5OSMORG="9d7ceeb7ab3a0905abf200f1a7608f92" | |
| 21 | ||
| 22 | # the size of a metatile containing only water? | |
| 23 | SIZEOSMDE=7124 | |
| 24 | SIZEOSMORG=7124 | |
| 25 | ||
| 26 | # Directory that contains the tiles? (with trailing slash!) | |
| 27 | OSMDEDIR="/mnt/tiles/tiles/osmde/" | |
| 28 | OSMORGDIR="/mnt/tiles/tiles/osm/" | |
| 29 | ||
| 30 | NDELETED=0 | |
| 31 | for z in `seq $MINZ $MAXZ` | |
| 32 | do | |
| 33 | if [ ! -d "${OSMDEDIR}${z}" ] ; then | |
| 34 | continue | |
| 35 | fi | |
| 36 | for tiles in `find ${OSMDEDIR}${z} -xdev -type f -name '*.meta' -size ${SIZEOSMDE}c -mtime +${AGE} -print` | |
| 37 | do | |
| 38 | # We need to skip the first 20 bytes of the file as they contain the metafile | |
| 39 | # header that contains the x/y location of the tile. | |
| 40 | TILEMD5=`tail -c +20 $tiles | md5sum -b | sed -e 's/ .*//g'` | |
| 41 | if [ "$TILEMD5" == "$MD5OSMDE" ] ; then | |
| 42 | echo "Deleting $tiles" | |
| 43 | rm $tiles | |
| 44 | if [ $? -ne 0 ] ; then | |
| 45 | echo "There was an error deleting $tiles." | |
| 46 | echo "Aborting after deleting $NDELETED files." | |
| 47 | exit 1 | |
| 48 | fi | |
| 49 | let "NDELETED=NDELETED+1" | |
| 50 | #else | |
| 51 | # echo "$tiles is not a water tile." | |
| 52 | fi | |
| 53 | done | |
| 54 | done | |
| 55 | ||
| 56 | for z in `seq $MINZ $MAXZ` | |
| 57 | do | |
| 58 | if [ ! -d "${OSMORGDIR}${z}" ] ; then | |
| 59 | continue | |
| 60 | fi | |
| 61 | for tiles in `find ${OSMORGDIR}${z} -xdev -type f -name '*.meta' -size ${SIZEOSMORG}c -mtime +${AGE} -print` | |
| 62 | do | |
| 63 | # We need to skip the first 20 bytes of the file as they contain the metafile | |
| 64 | # header that contains the x/y location of the tile. | |
| 65 | TILEMD5=`tail -c +20 $tiles | md5sum -b | sed -e 's/ .*//g'` | |
| 66 | if [ "$TILEMD5" == "$MD5OSMORG" ] ; then | |
| 67 | echo "Deleting $tiles" | |
| 68 | #rm $tiles | |
| 69 | if [ $? -ne 0 ] ; then | |
| 70 | echo "There was an error deleting $tiles." | |
| 71 | echo "Aborting after deleting $NDELETED files." | |
| 72 | exit 1 | |
| 73 | fi | |
| 74 | let "NDELETED=NDELETED+1" | |
| 75 | #else | |
| 76 | # echo "$tiles is not a water tile." | |
| 77 | fi | |
| 78 | done | |
| 79 | done | |
| 80 | ||
| 81 | echo "$NDELETED files deleted." | |
| 82 |