/
asset_path.go
212 lines (174 loc) · 4.68 KB
/
asset_path.go
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package storage
import (
"context"
"fmt"
"math/rand"
"os"
"path/filepath"
"strings"
"time"
"github.com/Filecoin-Titan/titan/node/ipld"
"github.com/ipfs/go-cid"
"github.com/ipfs/go-libipfs/blocks"
"github.com/shirou/gopsutil/v3/disk"
)
type assetsPaths struct {
baseDirs []string
assetPaths map[string]string
rand *rand.Rand
}
func newAssetsPaths(diskPaths []string, assetsDir string) (*assetsPaths, error) {
baseDirs := make([]string, 0, len(diskPaths))
for _, path := range diskPaths {
baseDir := filepath.Join(path, assetsDir)
err := os.MkdirAll(baseDir, 0o755)
if err != nil {
return nil, err
}
baseDirs = append(baseDirs, baseDir)
}
asPaths := &assetsPaths{baseDirs: baseDirs, assetPaths: make(map[string]string), rand: rand.New(rand.NewSource(time.Now().Unix()))}
if len(baseDirs) > 1 {
if err := asPaths.loadAssets(); err != nil {
return nil, err
}
}
log.Debugf("assetPaths:%#v", asPaths.assetPaths)
return asPaths, nil
}
func (ap *assetsPaths) findPath(root cid.Cid) (string, error) {
if len(ap.baseDirs) == 1 {
return ap.baseDirs[0], nil
}
baseDir, ok := ap.assetPaths[root.Hash().String()]
if ok {
return baseDir, nil
}
return "", fmt.Errorf("asset %s not exist", root.String())
}
func (ap *assetsPaths) exists(root cid.Cid) bool {
if len(ap.baseDirs) == 1 {
return true
}
if _, ok := ap.assetPaths[root.Hash().String()]; ok {
return true
}
return false
}
func (ap *assetsPaths) allocatePathWithBlocks(root cid.Cid, blks []blocks.Block) (string, error) {
if len(ap.baseDirs) == 1 {
return ap.baseDirs[0], nil
}
baseDir, ok := ap.assetPaths[root.Hash().String()]
if ok {
return baseDir, nil
}
isRoot := false
var rootBlk blocks.Block
for _, blk := range blks {
if blk.Cid().Hash().String() == root.Hash().String() {
isRoot = true
rootBlk = blk
break
}
}
if !isRoot {
return "", fmt.Errorf("can not allocate disk for none root asset ")
}
node, err := ipld.DecodeNode(context.Background(), rootBlk)
if err != nil {
return "", err
}
linksSize := uint64(len(rootBlk.RawData()))
for _, link := range node.Links() {
linksSize += link.Size
}
validPaths, err := ap.filterValidPaths(linksSize * 2)
if err != nil {
return "", err
}
if len(validPaths) == 0 {
return "", fmt.Errorf("no free space enough for asset %s", root.String())
}
n := ap.rand.Intn(len(validPaths))
path := validPaths[n]
ap.assetPaths[root.Hash().String()] = path
return path, nil
}
func (ap *assetsPaths) allocatePathWithAssetAndSize(root cid.Cid, size int64) (string, error) {
if len(ap.baseDirs) == 1 {
return ap.baseDirs[0], nil
}
baseDir, ok := ap.assetPaths[root.Hash().String()]
if ok {
return baseDir, nil
}
validPaths, err := ap.filterValidPaths(uint64(size) * 2)
if err != nil {
return "", err
}
if len(validPaths) == 0 {
return "", fmt.Errorf("no free space enough for asset %s", root.String())
}
n := ap.rand.Intn(len(validPaths))
path := validPaths[n]
ap.assetPaths[root.Hash().String()] = path
return path, nil
}
func (ap *assetsPaths) allocatePathWithSize(size int64) (string, error) {
if len(ap.baseDirs) == 1 {
path := ap.baseDirs[0]
usageStat, err := disk.Usage(path)
if err != nil {
log.Errorf("get disk usage stat error: %s", err)
return "", err
}
if usageStat.Free > uint64(size) {
return path, nil
}
return "", fmt.Errorf("no free space enough for size %d", size)
}
validPaths, err := ap.filterValidPaths(uint64(size) * 2)
if err != nil {
return "", err
}
if len(validPaths) == 0 {
return "", fmt.Errorf("no free space enough for size %d", size)
}
n := ap.rand.Intn(len(validPaths))
path := validPaths[n]
return path, nil
}
func (ap *assetsPaths) filterValidPaths(freeSize uint64) ([]string, error) {
validPaths := make([]string, 0)
for _, baseDir := range ap.baseDirs {
usageStat, err := disk.Usage(baseDir)
if err != nil {
log.Errorf("get disk usage stat error: %s", err)
return nil, err
}
if usageStat.Free > freeSize {
validPaths = append(validPaths, baseDir)
}
}
return validPaths, nil
}
func (ap *assetsPaths) releasePath(root cid.Cid) {
delete(ap.assetPaths, root.String())
}
func (ap *assetsPaths) loadAssets() error {
for _, baseDir := range ap.baseDirs {
entries, err := os.ReadDir(baseDir)
if err != nil {
return err
}
for _, entry := range entries {
assetName := entry.Name()
if !entry.IsDir() {
assetName = strings.Replace(entry.Name(), ".car", "", 1)
}
ap.assetPaths[assetName] = baseDir
}
}
return nil
}