FileManager

go/cmd/paddlecloud/paddlecloud.go

@@ -16,6 +16,10 @@ func main() {
 	subcommands.Register(&paddlecloud.LogsCommand{}, "")
 	subcommands.Register(&paddlecloud.GetCommand{}, "")
 	subcommands.Register(&paddlecloud.KillCommand{}, "")
+	subcommands.Register(&paddlecloud.LsCommand{}, "")
+	subcommands.Register(&paddlecloud.CpCommand{}, "")
+	subcommands.Register(&paddlecloud.RmCommand{}, "")
+	subcommands.Register(&paddlecloud.MkdirCommand{}, "")
 
 	flag.Parse()
 	ctx := context.Background()

go/cmd/pfsserver/main.go

@@ -0,0 +1,22 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"net/http"
+
+	"github.com/PaddlePaddle/cloud/go/filemanager/pfsserver"
+	log "github.com/golang/glog"
+)
+
+func main() {
+	port := flag.Int("port", 8080, "port of server")
+	ip := flag.String("ip", "0.0.0.0", "ip of server")
+	flag.Parse()
+
+	router := pfsserver.NewRouter()
+	addr := fmt.Sprintf("%s:%d", *ip, *port)
+
+	log.Infof("server on:%s\n", addr)
+	log.Fatal(http.ListenAndServe(addr, router))
+}

go/filemanager/pfsmodules/chunk.go

@@ -0,0 +1,98 @@
+package pfsmodules
+
+import (
+	"errors"
+	"fmt"
+	"io"
+	"net/url"
+	"os"
+	"strconv"
+
+	log "github.com/golang/glog"
+)
+
+// Chunk respresents a chunk info.
+type Chunk struct {
+	Path   string
+	Offset int64
+	Size   int64
+}
+
+// ToURLParam encodes variables to url encoding parameters.
+func (p *Chunk) ToURLParam() string {
+	parameters := url.Values{}
+	parameters.Add("path", p.Path)
+
+	str := fmt.Sprint(p.Offset)
+	parameters.Add("offset", str)
+
+	str = fmt.Sprint(p.Size)
+	parameters.Add("chunksize", str)
+
+	return parameters.Encode()
+}
+
+// ParseChunk get a Chunk struct from path.
+// path example:
+// 	  path=/pfs/datacenter1/1.txt&offset=4096&chunksize=4096
+func ParseChunk(path string) (*Chunk, error) {
+	cmd := Chunk{}
+
+	m, err := url.ParseQuery(path)
+	if err != nil ||
+		len(m["path"]) == 0 ||
+		len(m["offset"]) == 0 ||
+		len(m["chunksize"]) == 0 {
+		return nil, errors.New(StatusJSONErr)
+	}
+
+	cmd.Path = m["path"][0]
+	cmd.Offset, err = strconv.ParseInt(m["offset"][0], 10, 64)
+	if err != nil {
+		return nil, errors.New(StatusJSONErr)
+	}
+
+	chunkSize, err := strconv.ParseInt(m["chunksize"][0], 10, 64)
+	if err != nil {
+		return nil, errors.New(StatusBadChunkSize)
+	}
+	cmd.Size = chunkSize
+
+	return &cmd, nil
+}
+
+// LoadChunkData loads a specified chunk to io.Writer.
+func (p *Chunk) LoadChunkData(w io.Writer) error {
+	f, err := os.Open(p.Path)
+	if err != nil {
+		return err
+	}
+	defer Close(f)
+
+	_, err = f.Seek(p.Offset, 0)
+	if err != nil {
+		return err
+	}
+
+	loaded, err := io.CopyN(w, f, p.Size)
+	log.V(2).Infof("loaded:%d\n", loaded)
+	return err
+}
+
+// SaveChunkData save data from io.Reader.
+func (p *Chunk) SaveChunkData(r io.Reader) error {
+	f, err := os.OpenFile(p.Path, os.O_WRONLY, 0600)
+	if err != nil {
+		return err
+	}
+	defer Close(f)
+
+	_, err = f.Seek(p.Offset, 0)
+	if err != nil {
+		return err
+	}
+
+	writen, err := io.CopyN(f, r, p.Size)
+	log.V(2).Infof("chunksize:%d writen:%d\n", p.Size, writen)
+	return err
+}

go/filemanager/pfsmodules/chunkmeta.go

@@ -0,0 +1,209 @@
+package pfsmodules
+
+import (
+	"crypto/md5"
+	"encoding/hex"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"net/http"
+	"net/url"
+	"os"
+	"sort"
+	"strconv"
+)
+
+const (
+	defaultMaxChunkSize = 4 * 1024 * 1024
+	defaultMinChunkSize = 4 * 1024
+)
+const (
+	ChunkMetaCmdName = "GetChunkMeta"
+)
+
+// ChunkMeta holds the chunk meta's info.
+type ChunkMeta struct {
+	Offset   int64  `json:"offset"`
+	Checksum string `json:"checksum"`
+	Len      int64  `json:"len"`
+}
+
+// ChunkMetaCmd is a command.
+type ChunkMetaCmd struct {
+	Method    string `json:"method"`
+	FilePath  string `json:"path"`
+	ChunkSize int64  `json:"chunksize"`
+}
+
+// ToURLParam encodes ChunkMetaCmd to URL encoding string.
+func (p *ChunkMetaCmd) ToURLParam() string {
+	parameters := url.Values{}
+	parameters.Add("method", p.Method)
+	parameters.Add("path", p.FilePath)
+
+	str := fmt.Sprint(p.ChunkSize)
+	parameters.Add("chunksize", str)
+
+	return parameters.Encode()
+}
+
+// ToJSON encodes ChunkMetaCmd to JSON string.
+func (p *ChunkMetaCmd) ToJSON() ([]byte, error) {
+	return json.Marshal(p)
+}
+
+// Run is a functions which run ChunkMetaCmd.
+func (p *ChunkMetaCmd) Run() (interface{}, error) {
+	return GetChunkMeta(p.FilePath, p.ChunkSize)
+}
+
+func (p *ChunkMetaCmd) checkChunkSize() error {
+	if p.ChunkSize < defaultMinChunkSize ||
+		p.ChunkSize > defaultMaxChunkSize {
+		return errors.New(StatusBadChunkSize)
+	}
+
+	return nil
+}
+
+// CloudCheck checks the conditions when running on cloud.
+func (p *ChunkMetaCmd) CloudCheck() error {
+	if !IsCloudPath(p.FilePath) {
+		return errors.New(StatusShouldBePfsPath + ": p.FilePath")
+	}
+	if !CheckUser(p.FilePath) {
+		return errors.New(StatusUnAuthorized + ":" + p.FilePath)
+	}
+	return p.checkChunkSize()
+}
+
+// LocalCheck checks the conditions when running locally.
+func (p *ChunkMetaCmd) LocalCheck() error {
+	return p.checkChunkSize()
+}
+
+// NewChunkMetaCmdFromURLParams get a new ChunkMetaCmd.
+func NewChunkMetaCmdFromURLParam(r *http.Request) (*ChunkMetaCmd, error) {
+	method := r.URL.Query().Get("method")
+	path := r.URL.Query().Get("path")
+	chunkStr := r.URL.Query().Get("chunksize")
+
+	if len(method) == 0 ||
+		method != ChunkMetaCmdName ||
+		len(path) == 0 ||
+		len(chunkStr) == 0 {
+		return nil, errors.New(http.StatusText(http.StatusBadRequest))
+	}
+
+	chunkSize, err := strconv.ParseInt(chunkStr, 10, 64)
+	if err != nil {
+		return nil, errors.New(StatusBadChunkSize)
+	}
+
+	return &ChunkMetaCmd{
+		Method:    method,
+		FilePath:  path,
+		ChunkSize: chunkSize,
+	}, nil
+}
+
+type metaSlice []ChunkMeta
+
+func (a metaSlice) Len() int           { return len(a) }
+func (a metaSlice) Swap(i, j int)      { a[i], a[j] = a[j], a[i] }
+func (a metaSlice) Less(i, j int) bool { return a[i].Offset < a[j].Offset }
+
+// GetDiffChunkMeta gets difference between srcMeta and dstMeta.
+func GetDiffChunkMeta(srcMeta []ChunkMeta, dstMeta []ChunkMeta) ([]ChunkMeta, error) {
+	if len(dstMeta) == 0 || len(srcMeta) == 0 {
+		return srcMeta, nil
+	}
+
+	if !sort.IsSorted(metaSlice(srcMeta)) {
+		sort.Sort(metaSlice(srcMeta))
+	}
+
+	if !sort.IsSorted(metaSlice(dstMeta)) {
+		sort.Sort(metaSlice(dstMeta))
+	}
+
+	dstIdx := 0
+	srcIdx := 0
+	diff := make([]ChunkMeta, 0, len(srcMeta))
+
+	for {
+		if srcMeta[srcIdx].Offset < dstMeta[dstIdx].Offset {
+			diff = append(diff, srcMeta[srcIdx])
+			srcIdx++
+		} else if srcMeta[srcIdx].Offset > dstMeta[dstIdx].Offset {
+			dstIdx++
+		} else {
+			if srcMeta[srcIdx].Checksum != dstMeta[dstIdx].Checksum {
+				diff = append(diff, srcMeta[srcIdx])
+			}
+
+			dstIdx++
+			srcIdx++
+		}
+
+		if dstIdx >= len(dstMeta) {
+			break
+		}
+
+		if srcIdx >= len(srcMeta) {
+			break
+		}
+	}
+
+	if srcIdx < len(srcMeta) {
+		diff = append(diff, srcMeta[srcIdx:]...)
+	}
+
+	return diff, nil
+}
+
+// GetChunkMeta gets chunk metas from path of file.
+func GetChunkMeta(path string, len int64) ([]ChunkMeta, error) {
+	f, err := os.Open(path)
+	if err != nil {
+		return nil, err
+	}
+	defer Close(f)
+
+	if len > defaultMaxChunkSize || len < defaultMinChunkSize {
+		return nil, errors.New(StatusBadChunkSize)
+	}
+
+	fi, err := f.Stat()
+	if err != nil {
+		return nil, err
+	}
+
+	metas := make([]ChunkMeta, 0, fi.Size()/len+1)
+	data := make([]byte, len)
+	offset := int64(0)
+
+	for {
+		n, err := f.Read(data)
+		if err != nil && err != io.EOF {
+			return nil, err
+		}
+
+		if err == io.EOF {
+			break
+		}
+
+		m := ChunkMeta{}
+		m.Offset = offset
+		sum := md5.Sum(data[:n])
+		m.Checksum = hex.EncodeToString(sum[:])
+		m.Len = int64(n)
+
+		metas = append(metas, m)
+
+		offset += int64(n)
+	}
+
+	return metas, nil
+}

go/filemanager/pfsmodules/command.go

@@ -0,0 +1,44 @@
+package pfsmodules
+
+import (
+	"io"
+	"strings"
+
+	log "github.com/golang/glog"
+)
+
+const (
+	// DefaultMultiPartBoundary is the default multipart form boudary.
+	DefaultMultiPartBoundary = "8d7b0e5709d756e21e971ff4d9ac3b20"
+
+	// MaxJSONRequestSize is the max body size when server receives a request.
+	MaxJSONRequestSize = 2048
+)
+
+// Command is a interface of all commands.
+type Command interface {
+	ToURLParam() string
+	ToJSON() ([]byte, error)
+	Run() (interface{}, error)
+	LocalCheck() error
+	CloudCheck() error
+}
+
+// IsCloudPath returns whether a path is a pfspath.
+func IsCloudPath(path string) bool {
+	return strings.HasPrefix(path, "/pfs/")
+}
+
+// CheckUser checks if a user has authority to access a path.
+func CheckUser(path string) bool {
+	// TODO
+	return true
+}
+
+// Close closes c and log it.
+func Close(c io.Closer) {
+	err := c.Close()
+	if err != nil {
+		log.Error(err)
+	}
+}