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#!/bin/sh
# A simple shell script to delete a media from the Nginx cache.
SCRIPTNAME=${0##*/}
# NGINX cache directory
CACHE_DIRECTORY="/tmp/pleroma-media-cache"
## Return the files where the items are cached.
## $1 - the filename, can be a pattern .
## $2 - the cache directory.
## $3 - (optional) the number of parallel processes to run for grep.
get_cache_files() {
local max_parallel=${3-16}
find $2 -maxdepth 2 -type d | xargs -P $max_parallel -n 1 grep -E -Rl "^KEY:.*$1" | sort -u
}
## Removes an item from the given cache zone.
## $1 - the filename, can be a pattern .
## $2 - the cache directory.
purge_item() {
for f in $(get_cache_files $1 $2); do
echo "found file: $f"
[ -f $f ] || continue
echo "Deleting $f from $2."
rm $f
done
} # purge_item
purge() {
for url in "$@"
do
echo "$SCRIPTNAME delete \`$url\` from cache ($CACHE_DIRECTORY)"
purge_item $url $CACHE_DIRECTORY
done
}
purge $@
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