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gc.go
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gc.go
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package main
import (
"container/heap"
"fmt"
"os"
"path/filepath"
"strings"
"time"
)
// cleanFolder checks if the folder needs to be cleaned and removes older file if necessary.
func cleanFolder() {
for {
time.Sleep(gcCooldown * time.Second)
// Calculate total file size and gather list of files.
var size int64
deleteQueue := make(queue, 0)
filepath.Walk("./hosted", func(_ string, f os.FileInfo, err error) error {
if err != nil {
fmt.Println(err)
return nil
}
if f.IsDir() {
return nil
}
deleteQueue = append(deleteQueue, f)
size += f.Size()
return nil
})
// Do nothing if file limit is not reached yet.
if size < maxStorage {
continue
}
// Keep finding the largest file and deleting it until space is under configuration.
heap.Init(&deleteQueue)
for size > maxStorage {
toDelete := heap.Pop(&deleteQueue).(os.FileInfo)
if skipRedirects && strings.HasSuffix(toDelete.Name(), ".redir") {
continue
}
if err := os.Remove("./hosted/" + toDelete.Name()); err != nil {
fmt.Println(err)
} else {
size -= toDelete.Size()
}
}
}
}