mirror of
https://github.com/seaweedfs/seaweedfs.git
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git-svn-id: https://weed-fs.googlecode.com/svn/trunk@47 282b0af5-e82d-9cf1-ede4-77906d7719d0
This commit is contained in:
chris.lu@gmail.com
parent
bb01324482
commit
8aba24a3f8
90
weed-fs/src/cmd/weedmaster/weedmaster.go
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90
weed-fs/src/cmd/weedmaster/weedmaster.go
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@ -0,0 +1,90 @@
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package main
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import (
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"pkg/directory"
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"encoding/json"
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"flag"
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"fmt"
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"log"
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"net/http"
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"pkg/storage"
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"strconv"
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"strings"
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)
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var (
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port = flag.Int("port", 9333, "http listen port")
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metaFolder = flag.String("mdir", "/tmp", "data directory to store mappings")
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capacity = flag.Int("capacity", 100, "maximum number of volumes to hold")
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mapper *directory.Mapper
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IsDebug = flag.Bool("debug", false, "verbose debug information")
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volumeSizeLimitMB = flag.Uint("volumeSizeLimitMB", 32*1024, "Default Volume Size in MegaBytes")
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)
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func dirLookupHandler(w http.ResponseWriter, r *http.Request) {
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vid := r.FormValue("volumeId")
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commaSep := strings.Index(vid, ",")
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if commaSep > 0 {
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vid = vid[0:commaSep]
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}
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volumeId, _ := strconv.ParseUint(vid, 10, 64)
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machine, e := mapper.Get(uint32(volumeId))
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if e == nil {
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writeJson(w, r, machine.Server)
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} else {
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log.Println("Invalid volume id", volumeId)
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writeJson(w, r, map[string]string{"error": "volume id " + strconv.FormatUint(volumeId, 10) + " not found"})
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}
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}
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func dirAssignHandler(w http.ResponseWriter, r *http.Request) {
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fid, machine, err := mapper.PickForWrite()
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if err == nil {
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writeJson(w, r, map[string]string{"fid": fid, "url": machine.Url})
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} else {
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log.Println(err)
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writeJson(w, r, map[string]string{"error": err.Error()})
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}
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}
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func dirJoinHandler(w http.ResponseWriter, r *http.Request) {
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s := r.RemoteAddr[0:strings.Index(r.RemoteAddr, ":")+1] + r.FormValue("port")
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publicUrl := r.FormValue("publicUrl")
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volumes := new([]storage.VolumeInfo)
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json.Unmarshal([]byte(r.FormValue("volumes")), volumes)
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if *IsDebug {
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log.Println(s, "volumes", r.FormValue("volumes"))
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}
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mapper.Add(*directory.NewMachine(s, publicUrl, *volumes))
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}
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func dirStatusHandler(w http.ResponseWriter, r *http.Request) {
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writeJson(w, r, mapper)
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}
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func writeJson(w http.ResponseWriter, r *http.Request, obj interface{}) {
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w.Header().Set("Content-Type", "application/javascript")
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bytes, _ := json.Marshal(obj)
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callback := r.FormValue("callback")
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if callback == "" {
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w.Write(bytes)
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} else {
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w.Write([]uint8(callback))
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w.Write([]uint8("("))
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fmt.Fprint(w, string(bytes))
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w.Write([]uint8(")"))
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}
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}
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func main() {
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flag.Parse()
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log.Println("Volume Size Limit is", *volumeSizeLimitMB, "MB")
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mapper = directory.NewMapper(*metaFolder, "directory", uint64(*volumeSizeLimitMB)*1024*1024)
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http.HandleFunc("/dir/assign", dirAssignHandler)
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http.HandleFunc("/dir/lookup", dirLookupHandler)
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http.HandleFunc("/dir/join", dirJoinHandler)
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http.HandleFunc("/dir/status", dirStatusHandler)
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log.Println("Start directory service at http://127.0.0.1:" + strconv.Itoa(*port))
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e := http.ListenAndServe(":"+strconv.Itoa(*port), nil)
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if e != nil {
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log.Fatal("Fail to start:", e)
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}
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}
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@ -0,0 +1,59 @@
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package main
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import (
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"pkg/storage"
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"flag"
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"log"
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"os"
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"path"
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"strconv"
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)
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var (
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dir = flag.String("dir", "/tmp", "data directory to store files")
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volumeId = flag.Int("volumeId", -1, "a non-negative volume id. The volume should already exist in the dir. The volume index file should not exist.")
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IsDebug = flag.Bool("debug", false, "enable debug mode")
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store *storage.Store
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)
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func main() {
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flag.Parse()
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if *volumeId == -1 {
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flag.Usage()
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return
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}
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fileName := strconv.Itoa(*volumeId)
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dataFile, e := os.OpenFile(path.Join(*dir, fileName+".dat"), os.O_RDONLY, 0644)
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if e != nil {
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log.Fatalf("Read Volume [ERROR] %s\n", e)
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}
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defer dataFile.Close()
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indexFile, ie := os.OpenFile(path.Join(*dir, fileName+".idx"), os.O_WRONLY|os.O_CREATE, 0644)
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if ie != nil {
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log.Fatalf("Create Volume Index [ERROR] %s\n", ie)
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}
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defer indexFile.Close()
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//skip the volume super block
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dataFile.Seek(storage.SuperBlockSize, 0)
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n, length := storage.ReadNeedle(dataFile)
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nm := storage.NewNeedleMap(indexFile)
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offset := uint32(storage.SuperBlockSize)
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for n != nil {
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if *IsDebug {
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log.Println("key", n.Key, "volume offset", offset, "data_size", n.Size, "length", length)
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}
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if n.Size > 0 {
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count, pe := nm.Put(n.Key, offset/8, n.Size)
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if *IsDebug {
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log.Println("saved", count, "with error", pe)
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}
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}
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offset += length
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n, length = storage.ReadNeedle(dataFile)
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}
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}
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167
weed-fs/src/cmd/weedvolume/weedvolume.go
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167
weed-fs/src/cmd/weedvolume/weedvolume.go
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package main
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import (
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"encoding/json"
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"flag"
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"fmt"
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"log"
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"math/rand"
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"mime"
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"net/http"
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"pkg/storage"
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"strconv"
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"strings"
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"time"
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)
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var (
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port = flag.Int("port", 8080, "http listen port")
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chunkFolder = flag.String("dir", "/tmp", "data directory to store files")
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volumes = flag.String("volumes", "0,1-3,4", "comma-separated list of volume ids or range of ids")
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publicUrl = flag.String("publicUrl", "localhost:8080", "public url to serve data read")
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metaServer = flag.String("mserver", "localhost:9333", "master directory server to store mappings")
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IsDebug = flag.Bool("debug", false, "enable debug mode")
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pulse = flag.Int("pulseSeconds", 5, "number of seconds between heartbeats")
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store *storage.Store
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)
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func statusHandler(w http.ResponseWriter, r *http.Request) {
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writeJson(w, r, store.Status())
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}
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func addVolumeHandler(w http.ResponseWriter, r *http.Request) {
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store.AddVolume(r.FormValue("volume"))
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writeJson(w, r, store.Status())
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}
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func storeHandler(w http.ResponseWriter, r *http.Request) {
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switch r.Method {
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case "GET":
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GetHandler(w, r)
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case "DELETE":
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DeleteHandler(w, r)
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case "POST":
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PostHandler(w, r)
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}
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}
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func GetHandler(w http.ResponseWriter, r *http.Request) {
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n := new(storage.Needle)
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vid, fid, ext := parseURLPath(r.URL.Path)
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volumeId, _ := strconv.ParseUint(vid, 10, 64)
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n.ParsePath(fid)
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if *IsDebug {
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log.Println("volume", volumeId, "reading", n)
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}
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cookie := n.Cookie
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count, e := store.Read(volumeId, n)
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if *IsDebug {
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log.Println("read bytes", count, "error", e)
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}
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if n.Cookie != cookie {
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log.Println("request with unmaching cookie from ", r.RemoteAddr, "agent", r.UserAgent())
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return
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}
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if ext != "" {
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w.Header().Set("Content-Type", mime.TypeByExtension(ext))
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}
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w.Write(n.Data)
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}
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func PostHandler(w http.ResponseWriter, r *http.Request) {
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vid, _, _ := parseURLPath(r.URL.Path)
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volumeId, e := strconv.ParseUint(vid, 10, 64)
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if e != nil {
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writeJson(w, r, e)
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} else {
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ret := store.Write(volumeId, storage.NewNeedle(r))
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m := make(map[string]uint32)
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m["size"] = ret
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writeJson(w, r, m)
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}
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}
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func DeleteHandler(w http.ResponseWriter, r *http.Request) {
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n := new(storage.Needle)
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vid, fid, _ := parseURLPath(r.URL.Path)
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volumeId, _ := strconv.ParseUint(vid, 10, 64)
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n.ParsePath(fid)
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if *IsDebug {
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log.Println("deleting", n)
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}
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cookie := n.Cookie
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count, ok := store.Read(volumeId, n)
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if ok != nil {
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m := make(map[string]uint32)
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m["size"] = 0
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writeJson(w, r, m)
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return
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}
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if n.Cookie != cookie {
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log.Println("delete with unmaching cookie from ", r.RemoteAddr, "agent", r.UserAgent())
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return
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}
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n.Size = 0
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store.Delete(volumeId, n)
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m := make(map[string]uint32)
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m["size"] = uint32(count)
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writeJson(w, r, m)
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}
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func writeJson(w http.ResponseWriter, r *http.Request, obj interface{}) {
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w.Header().Set("Content-Type", "application/javascript")
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bytes, _ := json.Marshal(obj)
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callback := r.FormValue("callback")
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if callback == "" {
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w.Write(bytes)
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} else {
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w.Write([]uint8(callback))
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w.Write([]uint8("("))
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fmt.Fprint(w, string(bytes))
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w.Write([]uint8(")"))
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}
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//log.Println("JSON Response", string(bytes))
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}
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func parseURLPath(path string) (vid, fid, ext string) {
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sepIndex := strings.LastIndex(path, "/")
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commaIndex := strings.LastIndex(path[sepIndex:], ",")
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if commaIndex <= 0 {
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log.Println("unknown file id", path[sepIndex+1:])
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return
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}
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dotIndex := strings.LastIndex(path[sepIndex:], ".")
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vid = path[sepIndex+1 : commaIndex]
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fid = path[commaIndex+1:]
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ext = ""
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if dotIndex > 0 {
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fid = path[commaIndex+1 : dotIndex]
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ext = path[dotIndex+1:]
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}
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return
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}
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func main() {
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flag.Parse()
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//TODO: now default to 1G, this value should come from server?
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store = storage.NewStore(*port, *publicUrl, *chunkFolder, *volumes)
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defer store.Close()
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http.HandleFunc("/", storeHandler)
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http.HandleFunc("/status", statusHandler)
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http.HandleFunc("/add_volume", addVolumeHandler)
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go func() {
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for {
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store.Join(*metaServer)
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time.Sleep(time.Duration(float32(*pulse * 1e3) *(1 + rand.Float32()))*time.Millisecond)
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}
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}()
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log.Println("store joined at", *metaServer)
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log.Println("Start storage service at http://127.0.0.1:"+strconv.Itoa(*port), "public url", *publicUrl)
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e := http.ListenAndServe(":"+strconv.Itoa(*port), nil)
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if e != nil {
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log.Fatalf("Fail to start:", e)
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}
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}
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