mirror of
https://github.com/limosek/zaf.git
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69 lines
1.4 KiB
Bash
69 lines
1.4 KiB
Bash
# Zaf cache related functions
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zaf_cache_clean(){
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if [ -n "$ZAF_CACHE_DIR" ]; then
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zaf_wrn "Removing cache entries"
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rm -rf "$ZAF_CACHE_DIR"
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else
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zaf_err "Cache dir not set."
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fi
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mkdir -p "$ZAF_CACHE_DIR"
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}
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# Get cache key from requested param
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zaf_cachekey(){
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echo $1 | md5sum - | cut -d ' ' -f 1
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}
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# Put object into cache
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# $1 key
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# $2 value
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# $3 lifetime in seconds
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zaf_tocache(){
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local key
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local value
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local lifetime
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key=$(zaf_cachekey $1)
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echo "$2" >$ZAF_CACHE_DIR/$key
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echo "$1" >$ZAF_CACHE_DIR/$key.key
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touch -m -d "$3 seconds" $ZAF_CACHE_DIR/$key.tme
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zaf_trc "Cache: Saving entry $1($key)"
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}
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# Put object into cache from stdin and copy to stdout
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# $1 key
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# $2 lifetime in seconds
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zaf_tocache_stdin(){
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local key
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local lifetime
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key=$(zaf_cachekey $1)
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cat >$ZAF_CACHE_DIR/$key
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echo "$1" >$ZAF_CACHE_DIR/$key.key
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touch -m -d "$3 seconds" $ZAF_CACHE_DIR/$key.tme
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zaf_trc "Cache: Saving entry $1($key)"
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cat $ZAF_CACHE_DIR/$key
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}
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# Get object from cache
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# $1 key
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zaf_fromcache(){
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local key
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local value
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key=$(zaf_cachekey $1)
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if [ -f $ZAF_CACHE_DIR/$key ]; then
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if [ "$ZAF_CACHE_DIR/$key.tme" -nt "$ZAF_CACHE_DIR/$key" ]; then
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zaf_trc "Cache: serving $1($key) from cache"
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cat $ZAF_CACHE_DIR/$key
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else
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zaf_trc "Cache: removing old entry $1"
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rm -f "$ZAF_CACHE_DIR/$key*"
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return 2
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fi
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else
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zaf_trc "Cache: missing entry $1($key)"
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return 1
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fi
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}
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