rclone/cmd/bisync/delete_budget.go

package bisync

import (
	"fmt"

	"github.com/rclone/rclone/fs"
)

// deleteBudgetExceeded reports whether a proposed delete set trips percent,
// absolute file-count, or byte caps. Percent is opt.MaxDelete (0–100).
// File/byte caps are inactive when <= 0. Force bypasses all caps.
func deleteBudgetExceeded(opt *Options, oldCount, deleted int, deletedBytes int64) (bool, string) {
	if opt == nil || opt.Force || deleted <= 0 {
		return false, ""
	}
	if opt.MaxDeleteFiles > 0 && deleted > opt.MaxDeleteFiles {
		return true, fmt.Sprintf("too many deletes (>%d files, %d of %d)", opt.MaxDeleteFiles, deleted, oldCount)
	}
	if int64(opt.MaxDeleteSize) > 0 && deletedBytes > int64(opt.MaxDeleteSize) {
		return true, fmt.Sprintf("too many deletes by size (>%v, %v of listing)", opt.MaxDeleteSize, fs.SizeSuffix(deletedBytes))
	}
	if opt.MaxDelete >= 0 && oldCount > 0 {
		maxRatio := float64(opt.MaxDelete) / 100.0
		curRatio := float64(deleted) / float64(oldCount)
		if curRatio > maxRatio {
			return true, fmt.Sprintf("too many deletes (>%d%%, %d of %d)", opt.MaxDelete, deleted, oldCount)
		}
	}
	return false, ""
}