67 lines
1.1 KiB
Go
67 lines
1.1 KiB
Go
package main
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import (
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"flag"
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"log"
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"sort"
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"time"
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)
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var (
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cacheCleanDelay = flag.Duration("cache-clean-delay", 10*time.Minute, "Time between cache cleanups")
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)
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func casCleaner() {
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for {
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err := cleanCAS()
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if err != nil {
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log.Print("warn: couldn't clean cache: ", err)
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}
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time.Sleep(*cacheCleanDelay)
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}
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}
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func cleanCAS() error {
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cfg, err := readConfig()
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if err != nil {
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return err
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}
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activeTags := make([]string, len(cfg.Hosts))
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for i, host := range cfg.Hosts {
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ctx := newRenderContext(host, cfg)
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tag, err := ctx.Tag()
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if err != nil {
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return err
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}
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activeTags[i] = tag
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}
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tags, err := casStore.Tags()
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if err != nil {
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return err
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}
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sort.Strings(activeTags)
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for _, tag := range tags {
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idx := sort.SearchStrings(activeTags, tag)
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if idx < len(activeTags) && activeTags[idx] == tag {
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continue
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}
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// tag is not present in active tags
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log.Print("cache cleaner: removing tag ", tag)
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if err := casStore.Remove(tag); err != nil {
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log.Printf("cache cleaner: failed to remove tag %s: %v", tag, err)
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}
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}
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return nil
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}
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