caching script for drone.io Volume Cache

cache

#!/bin/bash
# drone.io cache simplifier by cab404, for using with Volume Cache plugin
# allows you to cache practically anything from anywhere, specifying only '.drone-cache' in mounts
# to pack something do "cache in (smthn)"
# to unpack all do "cache out"
#
# e.g you want to cache /root/.gradle/cache and /root/.gradle/wrapper (typical for android), you do
# get-cache:
#     image: drillster/drone-volume-cache
#     restore: true
#     mount:
#       - .drone-cache
#     volumes:
#       - /tmp/${DRONE_REPO}/cache:/cache
#
# build:
#   commands:
#     - ./cache out
#     - somebuildcommand
#     - ./cache in .gradle/cache
#     - ./cache in .gradle/wrapper
#
# save-cache:
#     image: drillster/drone-volume-cache
#     rebuild: true
#     mount:
#       - .drone-cache
#     volumes:
#       - /tmp/${DRONE_REPO}/cache:/cache

CACHEDIR=.drone-cache

mkdir -p $CACHEDIR

if [ $1 == "in" ]; then
    TARGET=$(readlink -f $2)
    TARGETDIR=$(dirname $TARGET)
    echo caching $TARGET

    mkdir -p "$CACHEDIR$TARGETDIR"
    cp -Tr "$TARGET" "$CACHEDIR$TARGET"
fi

if [ $1 == "out" ]; then
    cp -Tr $CACHEDIR/ /
fi