cache.sh

cache.sh

#! /bin/bash -e
function usage () {
  echo "usage $0 <action> [--cache-dir <cache-dir] [--remote <remote cache url>]"
  echo ""
  echo "<action>:"
  echo "    build"
  echo "    update-cache"
  echo ""
  echo "<cache-dir>:"
  echo "    The location of local cache"
  echo "    default value is '${HOME}/shared/cached'"
  echo ""
  echo "<remote cache url>:"
  echo "    The remote cache url"
  echo "    default value is empty"
  echo ""
  echo "$0 build"
  echo "$0 build --cache-dir $HOME/shared-cache"
  echo "$0 build --remote http://cache-server"
  echo "$0 update-cache"
  echo "$0 update-cache --cache-dir $HOME/shared-cache"
  echo "$0 update-cache --remote http://cache-server"
  echo "$0 update-cache --remote http://cache-server --cache-dir $HOME/shared-cache"
}

function abspath (){
    dirname="$(cd -- "$(dirname -- "$1")" && pwd)" || exit $?
    abspath="${dirname%/}/$(basename -- "$1")"
    echo $abspath
}

case $1 in
  build)
      ACTION=build
      ;;
  update-cache)
      ACTION=update-cache
      ;;
  help)
      usage
      exit 0
      ;;
  *)
      usage
      exit 1
      ;;
esac
shift

OPTIONS=`getopt-n $(basename $0) -o d:r: -l cache-dir:,remote: -- "$@"`
eval set -- "$OPTIONS"

UPDATE_CACHE=
DEFAULT_LOCAL_CACHE=${HOME}/shared/cached
CACHE_DIR=$DEFAULT_LOCAL_CACHE
REMOTE_URL=

while [ $# -gt 0 ]
do
  case $1 in
    -d | --cache-dir)
        # seek to the next parameter
        shift

        # parameter
        CACHE_DIR=$1
        ;;
    -r | --remote)
        # seek to the next parameter
        shift

        # parameter
        REMOTE_URL=$1
        ;;
    --)
        shift;
        break
        ;;
  esac
  shift
done

# while [ $# -gt 0 ]
# do
#   echo "引数=$1"
#   shift
# done
echo "ACTION=$ACTION"
echo "UPDATE_CACHE=$UPDATE_CACHE"
echo "CACHE_DIR=$(abspath $CACHE_DIR)"
echo "REMOTE_URL=$REMOTE_URL"

# UPDATE_CACHE	Remote				Local
# ------------------------------------------------------
# 1         	SOURCE_MIRROR_URL	DL_DIR
# 1             -					DL_DIR
# ""         	SOURCE_MIRROR_URL	-
# ""    		-					SOURCE_MIRROR_URL
#
if [ "$ACTION" == "update-cache" ];then
    DL_DIR=$CACHE_DIR
    if [ -n "$REMOTE_URL" ];then
        SOURCE_MIRROR_URL=$REMOTE_URL
    fi
else
    if [ -n "$REMOTE_URL" ];then
        SOURCE_MIRROR_URL=$REMOTE_URL
    else
        SOURCE_MIRROR_URL="file://$CACHE_DIR"
    fi
fi


echo "ACTION=$ACTION"
echo "SOURCE_MIRROR_URL=$SOURCE_MIRROR_URL"
echo "DL_DIR=$DL_DIR"