delete replications, untested yet

weed-fs/src/cmd/weed/volume.go

@@ -135,27 +135,11 @@ func PostHandler(w http.ResponseWriter, r *http.Request) {
 			ret := store.Write(volumeId, needle)
 			if ret > 0 || !store.HasVolume(volumeId) { //send to other replica locations
 				if r.FormValue("type") != "standard" {
-					if lookupResult, lookupErr := operation.Lookup(*masterNode, volumeId); lookupErr == nil {
-						sendFunc := func(background bool) {
-							postContentFunc := func(location operation.Location) bool {
-								operation.Upload("http://"+location.Url+r.URL.Path+"?type=standard", filename, bytes.NewReader(needle.Data))
-								return true
-							}
-							for _, location := range lookupResult.Locations {
-								if location.Url != (*ip+":"+strconv.Itoa(*vport)) {
-									if background {
-										go postContentFunc(location)
-									} else {
-										postContentFunc(location)
-									}
-								}
-							}
-						}
-						waitTime, err := strconv.Atoi(r.FormValue("wait"))
-						sendFunc(err == nil && waitTime > 0)
-					} else {
-						log.Println("Failed to lookup for", volumeId, lookupErr.Error())
-					}
+					waitTime, err := strconv.Atoi(r.FormValue("wait"))
+					distributedOperation(volumeId, func(location operation.Location) bool {
+						operation.Upload("http://"+location.Url+r.URL.Path+"?type=standard", filename, bytes.NewReader(needle.Data))
+						return true
+					}, err == nil && waitTime > 0)
 				}
 				w.WriteHeader(http.StatusCreated)
 			}
@@ -191,7 +175,19 @@ func DeleteHandler(w http.ResponseWriter, r *http.Request) {
 	}
 
 	n.Size = 0
-	store.Delete(volumeId, n)
+	ret := store.Delete(volumeId, n)
+
+	if ret > 0 || !store.HasVolume(volumeId) { //send to other replica locations
+		if r.FormValue("type") != "standard" {
+			waitTime, err := strconv.Atoi(r.FormValue("wait"))
+			distributedOperation(volumeId, func(location operation.Location) bool {
+				operation.Delete("http://"+location.Url+r.URL.Path+"?type=standard")
+				return true
+			}, err == nil && waitTime > 0)
+		}
+		w.WriteHeader(http.StatusCreated)
+	}
+
 	m := make(map[string]uint32)
 	m["size"] = uint32(count)
 	writeJson(w, r, m)
@@ -217,6 +213,27 @@ func parseURLPath(path string) (vid, fid, ext string) {
 	return
 }
 
+type distributedFunction func(location operation.Location) bool
+
+func distributedOperation(volumeId storage.VolumeId, op distributedFunction, wait bool) {
+	if lookupResult, lookupErr := operation.Lookup(*masterNode, volumeId); lookupErr == nil {
+		sendFunc := func(background bool) {
+			for _, location := range lookupResult.Locations {
+				if location.Url != (*ip + ":" + strconv.Itoa(*vport)) {
+					if background {
+						go op(location)
+					} else {
+						op(location)
+					}
+				}
+			}
+		}
+		sendFunc(wait)
+	} else {
+		log.Println("Failed to lookup for", volumeId, lookupErr.Error())
+	}
+}
+
 func runVolume(cmd *Command, args []string) bool {
 	fileInfo, err := os.Stat(*volumeFolder)
 	//TODO: now default to 1G, this value should come from server?
@@ -228,9 +245,9 @@ func runVolume(cmd *Command, args []string) bool {
 	}
 	perm := fileInfo.Mode().Perm()
 	log.Println("Volume Folder permission:", perm)
-	
+
 	if *publicUrl == "" {
-	  *publicUrl = *ip + ":" + strconv.Itoa(*vport)
+		*publicUrl = *ip + ":" + strconv.Itoa(*vport)
 	}
 
 	store = storage.NewStore(*vport, *ip, *publicUrl, *volumeFolder, *maxVolumeCount)
@@ -247,7 +264,7 @@ func runVolume(cmd *Command, args []string) bool {
 	}()
 	log.Println("store joined at", *masterNode)
 
-	log.Println("Start storage service at http://"+*ip+":"+strconv.Itoa(*vport))
+	log.Println("Start storage service at http://" + *ip + ":" + strconv.Itoa(*vport))
 	e := http.ListenAndServe(":"+strconv.Itoa(*vport), nil)
 	if e != nil {
 		log.Fatalf("Fail to start:%s", e.Error())

weed-fs/src/pkg/operation/delete_content.go

@@ -0,0 +1,14 @@
+package operation
+
+import (
+	"net/http"
+)
+
+func Delete(url string) error {
+	req, err := http.NewRequest("DELETE", url, nil)
+	if err != nil {
+		return err
+	}
+	_, err = http.DefaultClient.Do(req)
+	return err
+}

weed-fs/src/pkg/operation/upload_content.go

@@ -1,42 +1,42 @@
 package operation
 
 import (
-  "bytes"
-  "encoding/json"
-  "mime/multipart"
-  "net/http"
-  _ "fmt"
-  "io"
-  "io/ioutil"
+	"bytes"
+	"encoding/json"
+	_ "fmt"
+	"io"
+	"io/ioutil"
+	"mime/multipart"
+	"net/http"
 )
 
 type UploadResult struct {
-  Size int
+	Size int
 }
 
 func Upload(uploadUrl string, filename string, reader io.Reader) (*UploadResult, error) {
-  println("uploading to", uploadUrl)
-  body_buf := bytes.NewBufferString("")
-  body_writer := multipart.NewWriter(body_buf)
-  file_writer, err := body_writer.CreateFormFile("file", filename)
-  io.Copy(file_writer, reader)
-  content_type := body_writer.FormDataContentType()
-  body_writer.Close()
-  resp, err := http.Post(uploadUrl, content_type, body_buf)
-  if err != nil {
-    return nil, err
-  }
-  defer resp.Body.Close()
-  resp_body, err := ioutil.ReadAll(resp.Body)
-  if err != nil {
-    return nil, err
-  }
-  var ret UploadResult
-  println("upload response to", uploadUrl, resp_body)
-  err = json.Unmarshal(resp_body, &ret)
-  if err != nil {
-    panic(err.Error())
-  }
-  //fmt.Println("Uploaded " + strconv.Itoa(ret.Size) + " Bytes to " + uploadUrl)
-  return &ret, nil
+	body_buf := bytes.NewBufferString("")
+	body_writer := multipart.NewWriter(body_buf)
+	file_writer, err := body_writer.CreateFormFile("file", filename)
+	io.Copy(file_writer, reader)
+	content_type := body_writer.FormDataContentType()
+	body_writer.Close()
+	resp, err := http.Post(uploadUrl, content_type, body_buf)
+	if err != nil {
+		println("uploading to", uploadUrl)
+		return nil, err
+	}
+	defer resp.Body.Close()
+	resp_body, err := ioutil.ReadAll(resp.Body)
+	if err != nil {
+		return nil, err
+	}
+	var ret UploadResult
+	err = json.Unmarshal(resp_body, &ret)
+	if err != nil {
+		println("upload response to", uploadUrl, resp_body)
+		panic(err.Error())
+	}
+	//fmt.Println("Uploaded " + strconv.Itoa(ret.Size) + " Bytes to " + uploadUrl)
+	return &ret, nil
 }