mirror of
https://github.com/TeaOSLab/EdgeNode.git
synced 2025-11-04 16:00:25 +08:00
96 lines
2.6 KiB
Go
96 lines
2.6 KiB
Go
// Copyright 2024 GoEdge CDN goedge.cdn@gmail.com. All rights reserved. Official site: https://goedge.cn .
|
||
|
||
package bfs
|
||
|
||
import (
|
||
"sort"
|
||
)
|
||
|
||
type FileHeader struct {
|
||
Version int `json:"1,omitempty"`
|
||
ModifiedAt int64 `json:"2,omitempty"`
|
||
ExpiresAt int64 `json:"3,omitempty"`
|
||
Status int `json:"4,omitempty"`
|
||
HeaderSize int64 `json:"5,omitempty"`
|
||
BodySize int64 `json:"6,omitempty"`
|
||
ExpiredBodySize int64 `json:"7,omitempty"`
|
||
HeaderBlocks []BlockInfo `json:"8,omitempty"`
|
||
BodyBlocks []BlockInfo `json:"9,omitempty"`
|
||
IsCompleted bool `json:"10,omitempty"`
|
||
IsWriting bool `json:"11,omitempty"`
|
||
}
|
||
|
||
func (this *FileHeader) Compact() {
|
||
// TODO 合并相邻的headerBlocks和bodyBlocks（必须是对应的BFile offset也要相邻）
|
||
|
||
if len(this.BodyBlocks) > 0 {
|
||
sort.Slice(this.BodyBlocks, func(i, j int) bool {
|
||
var block1 = this.BodyBlocks[i]
|
||
var block2 = this.BodyBlocks[j]
|
||
if block1.OriginOffsetFrom == block1.OriginOffsetFrom {
|
||
return block1.OriginOffsetTo < block2.OriginOffsetTo
|
||
}
|
||
return block1.OriginOffsetFrom < block2.OriginOffsetFrom
|
||
})
|
||
|
||
var isCompleted = true
|
||
if this.BodyBlocks[0].OriginOffsetFrom != 0 || this.BodyBlocks[len(this.BodyBlocks)-1].OriginOffsetTo != this.BodySize {
|
||
isCompleted = false
|
||
} else {
|
||
for index, block := range this.BodyBlocks {
|
||
// 是否有不连续的
|
||
if index > 0 && block.OriginOffsetFrom > this.BodyBlocks[index-1].OriginOffsetTo {
|
||
isCompleted = false
|
||
break
|
||
}
|
||
}
|
||
}
|
||
this.IsCompleted = isCompleted
|
||
}
|
||
}
|
||
|
||
func (this *FileHeader) Clone() *FileHeader {
|
||
return &FileHeader{
|
||
Version: this.Version,
|
||
ModifiedAt: this.ModifiedAt,
|
||
ExpiresAt: this.ExpiresAt,
|
||
Status: this.Status,
|
||
HeaderSize: this.HeaderSize,
|
||
BodySize: this.BodySize,
|
||
ExpiredBodySize: this.ExpiredBodySize,
|
||
HeaderBlocks: this.HeaderBlocks,
|
||
BodyBlocks: this.BodyBlocks,
|
||
IsCompleted: this.IsCompleted,
|
||
IsWriting: this.IsWriting,
|
||
}
|
||
}
|
||
|
||
func (this *FileHeader) BlockAt(offset int64) (blockInfo BlockInfo, ok bool) {
|
||
var l = len(this.BodyBlocks)
|
||
if l == 1 {
|
||
if this.BodyBlocks[0].Contains(offset) {
|
||
return this.BodyBlocks[0], true
|
||
}
|
||
return
|
||
}
|
||
|
||
sort.Search(l, func(i int) bool {
|
||
if this.BodyBlocks[i].Contains(offset) {
|
||
blockInfo = this.BodyBlocks[i]
|
||
ok = true
|
||
return true
|
||
}
|
||
return this.BodyBlocks[i].OriginOffsetFrom > offset
|
||
})
|
||
|
||
return
|
||
}
|
||
|
||
func (this *FileHeader) MaxOffset() int64 {
|
||
var l = len(this.BodyBlocks)
|
||
if l > 0 {
|
||
return this.BodyBlocks[l-1].OriginOffsetTo
|
||
}
|
||
return 0
|
||
}
|