adding VolumeId type
This commit is contained in:
Chris Lu
@@ -1,177 +1,176 @@
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package main
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import (
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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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"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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func init() {
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cmdVolume.Run = runVolume // break init cycle
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IsDebug = cmdVolume.Flag.Bool("debug", false, "enable debug mode")
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port = cmdVolume.Flag.Int("port", 8080, "http listen port")
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cmdVolume.Run = runVolume // break init cycle
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IsDebug = cmdVolume.Flag.Bool("debug", false, "enable debug mode")
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port = cmdVolume.Flag.Int("port", 8080, "http listen port")
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}
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var cmdVolume = &Command{
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UsageLine: "volume -port=8080 -dir=/tmp -volumes=0-99 -publicUrl=server_name:8080 -mserver=localhost:9333",
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Short: "start a volume server",
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Long: `start a volume server to provide storage spaces
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UsageLine: "volume -port=8080 -dir=/tmp -volumes=0-99 -publicUrl=server_name:8080 -mserver=localhost:9333",
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Short: "start a volume server",
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Long: `start a volume server to provide storage spaces
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`,
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}
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var (
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chunkFolder = cmdVolume.Flag.String("dir", "/tmp", "data directory to store files")
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volumes = cmdVolume.Flag.String("volumes", "0,1-3,4", "comma-separated list of volume ids or range of ids")
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publicUrl = cmdVolume.Flag.String("publicUrl", "localhost:8080", "public url to serve data read")
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metaServer = cmdVolume.Flag.String("mserver", "localhost:9333", "master directory server to store mappings")
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pulse = cmdVolume.Flag.Int("pulseSeconds", 5, "number of seconds between heartbeats")
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store *storage.Store
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chunkFolder = cmdVolume.Flag.String("dir", "/tmp", "data directory to store files")
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volumes = cmdVolume.Flag.String("volumes", "0,1-3,4", "comma-separated list of volume ids or range of ids")
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publicUrl = cmdVolume.Flag.String("publicUrl", "localhost:8080", "public url to serve data read")
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metaServer = cmdVolume.Flag.String("mserver", "localhost:9333", "master directory server to store mappings")
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pulse = cmdVolume.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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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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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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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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n := new(storage.Needle)
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vid, fid, ext := parseURLPath(r.URL.Path)
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volumeId, _ := storage.NewVolumeId(vid)
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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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mtype := mime.TypeByExtension(ext)
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w.Header().Set("Content-Type", mtype)
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if storage.IsCompressable(ext, mtype){
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if strings.Contains(r.Header.Get("Accept-Encoding"), "gzip"){
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w.Header().Set("Content-Encoding", "gzip")
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}else{
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n.Data = storage.UnGzipData(n.Data)
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}
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}
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}
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w.Write(n.Data)
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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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mtype := mime.TypeByExtension(ext)
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w.Header().Set("Content-Type", mtype)
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if storage.IsCompressable(ext, mtype) {
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if strings.Contains(r.Header.Get("Accept-Encoding"), "gzip") {
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w.Header().Set("Content-Encoding", "gzip")
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} else {
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n.Data = storage.UnGzipData(n.Data)
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}
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}
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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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needle, ne := storage.NewNeedle(r)
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if ne != nil {
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writeJson(w, r, ne)
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} else {
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ret := store.Write(volumeId, needle)
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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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vid, _, _ := parseURLPath(r.URL.Path)
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volumeId, e := storage.NewVolumeId(vid)
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if e != nil {
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writeJson(w, r, e)
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} else {
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needle, ne := storage.NewNeedle(r)
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if ne != nil {
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writeJson(w, r, ne)
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} else {
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ret := store.Write(volumeId, needle)
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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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}
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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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n := new(storage.Needle)
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vid, fid, _ := parseURLPath(r.URL.Path)
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volumeId, _ := storage.NewVolumeId(vid)
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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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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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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 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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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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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 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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if "favicon.ico" != path[sepIndex+1:] {
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log.Println("unknown file id", path[sepIndex+1:])
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}
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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:]
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}
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return
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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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if "favicon.ico" != path[sepIndex+1:] {
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log.Println("unknown file id", path[sepIndex+1:])
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}
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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:]
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}
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return
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}
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func runVolume(cmd *Command, args []string) bool {
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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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//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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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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return true
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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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return true
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}
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