Initial commit (code only without large binaries)

EdgeNode/internal/caches/manager_unix.go

@@ -0,0 +1,48 @@
+// Copyright 2023 GoEdge CDN goedge.cdn@gmail.com. All rights reserved. Official site: https://goedge.cn .
+//go:build !windows
+
+package caches
+
+import (
+	"fmt"
+	"golang.org/x/sys/unix"
+)
+
+// TotalDiskSize 消耗的磁盘尺寸
+func (this *Manager) TotalDiskSize() int64 {
+	this.locker.RLock()
+	defer this.locker.RUnlock()
+
+	var total = int64(0)
+	var sidMap = map[string]bool{} // partition sid => bool
+	for _, storage := range this.storageMap {
+		// 这里不能直接用 storage.TotalDiskSize() 相加，因为多个缓存策略缓存目录可能处在同一个分区目录下
+		fileStorage, ok := storage.(*FileStorage)
+		if ok {
+			var options = fileStorage.options // copy
+			if options != nil {
+				var dir = options.Dir // copy
+				if len(dir) == 0 {
+					continue
+				}
+				var stat = &unix.Statfs_t{}
+				err := unix.Statfs(dir, stat)
+				if err != nil {
+					continue
+				}
+				var sid = fmt.Sprintf("%d_%d", stat.Fsid.Val[0], stat.Fsid.Val[1])
+				if sidMap[sid] {
+					continue
+				}
+				sidMap[sid] = true
+				total += int64(stat.Blocks-stat.Bfree) * int64(stat.Bsize) // we add extra int64() for darwin
+			}
+		}
+	}
+
+	if total < 0 {
+		total = 0
+	}
+
+	return total
+}