// GET: /node/{id}
func (cr *NodeController) Read(id string, cx *goweb.Context) {
// Log Request and check for Auth
LogRequest(cx.Request)
u, err := AuthenticateRequest(cx.Request)
if err != nil {
// No Auth is not damning. Other errors are probably a dead db connection
if err.Error() != e.NoAuth {
if err.Error() == e.MongoDocNotFound {
cx.RespondWithErrorMessage("Invalid username or password", http.StatusBadRequest)
return
} else {
fmt.Println("Error at Auth:", err.Error())
cx.RespondWithError(http.StatusInternalServerError)
return
}
}
}
// Fake public user
if u == nil {
u = &user.User{Uuid: ""}
}
// Gather query params and setup flags
query := cx.Request.URL.Query()
_, download := query["download"]
_, pipe := query["pipe"]
_, list := query["list"]
// Load node and handle user unauthorized
node, err := ds.LoadNode(id, u.Uuid)
if err != nil {
if err.Error() == e.UnAuth {
fmt.Println("Unauthorized")
cx.RespondWithError(http.StatusUnauthorized)
return
} else if err.Error() == e.MongoDocNotFound {
cx.RespondWithNotFound()
return
} else {
// In theory the db connection could be lost between
// checking user and load but seems unlikely.
fmt.Println("Err@node_Read:LoadNode:", err.Error())
cx.RespondWithError(http.StatusInternalServerError)
return
}
}
// Switch though param flags
if download {
if node.File.Empty() {
cx.RespondWithErrorMessage("node file not found", http.StatusBadRequest)
return
}
_, index := query["index"]
_, part := query["part"]
_, chunksize := query["chunksize"]
if index {
if query["index"][0] == "size" {
if part {
var csize int64 = 1048576
if chunksize {
csize, err = strconv.ParseInt(query["chunksize"][0], 10, 64)
if err != nil {
cx.RespondWithErrorMessage("Invalid chunksize", http.StatusBadRequest)
return
}
}
var size int64 = 0
s := &partStreamer{rs: []*io.SectionReader{}, ws: cx.ResponseWriter, contentType: "application/octet-stream", filename: node.Id}
r, err := os.Open(node.DataPath())
if err != nil {
fmt.Println("Err@node_Read:Open:", err.Error())
cx.RespondWithError(http.StatusInternalServerError)
return
}
defer r.Close()
for _, p := range query["part"] {
pInt, err := strconv.ParseInt(p, 10, 64)
if err != nil {
cx.RespondWithErrorMessage("Invalid index part", http.StatusBadRequest)
return
}
pos, length, err := node.File.SizeOffset(pInt, csize)
if err != nil {
cx.RespondWithErrorMessage("Invalid index part", http.StatusBadRequest)
return
}
size += length
s.rs = append(s.rs, io.NewSectionReader(r, pos, length))
}
s.size = size
err = s.stream()
if err != nil {
fmt.Println("err", err.Error())
}
} else {
cx.RespondWithErrorMessage("Index parameter requires part parameter", http.StatusBadRequest)
return
}
} else {
if node.HasIndex(query["index"][0]) {
idx := ds.NewIndex()
err = idx.Load(fmt.Sprintf("%s/%s", node.IndexPath(), query["index"][0]))
if err != nil {
fmt.Println(err.Error())
cx.RespondWithErrorMessage("Error loading index", http.StatusBadRequest)
return
}
var size int64 = 0
s := &partStreamer{rs: []*io.SectionReader{}, ws: cx.ResponseWriter, contentType: "application/octet-stream", filename: node.Id}
r, err := os.Open(node.DataPath())
if err != nil {
fmt.Println("Err@node_Read:Open:", err.Error())
cx.RespondWithError(http.StatusInternalServerError)
return
}
defer r.Close()
for _, p := range query["part"] {
pInt, err := strconv.ParseInt(p, 10, 64)
if err != nil {
cx.RespondWithErrorMessage("Invalid index part", http.StatusBadRequest)
return
}
p, ok1 := idx.Idx[(pInt - 1)][0].(float64)
l, ok2 := idx.Idx[(pInt - 1)][1].(float64)
if !ok1 || !ok2 {
cx.RespondWithErrorMessage("Malformed index", http.StatusBadRequest)
return
}
pos := int64(p)
length := int64(l)
size += length
s.rs = append(s.rs, io.NewSectionReader(r, pos, length))
}
s.size = size
err = s.stream()
if err != nil {
fmt.Println("err", err.Error())
}
} else {
cx.RespondWithErrorMessage("Index not found", http.StatusBadRequest)
return
}
}
} else {
nf, err := os.Open(node.DataPath())
if err != nil {
// File not found or some sort of file read error.
// Probably deserves more checking
fmt.Println("err", err.Error())
cx.RespondWithError(http.StatusBadRequest)
return
}
s := &streamer{rs: nf, ws: cx.ResponseWriter, contentType: "application/octet-stream", filename: node.Id, size: node.File.Size}
err = s.stream()
if err != nil {
fmt.Println("err", err.Error())
}
}
return
} else if pipe {
cx.RespondWithError(http.StatusNotImplemented)
} else if list {
cx.RespondWithError(http.StatusNotImplemented)
} else {
// Base case respond with node in json
cx.RespondWithData(node)
}
}
// PUT: /node/{id} -> multipart-form
func (cr *NodeController) Update(id string, cx *goweb.Context) {
// Log Request and check for Auth
LogRequest(cx.Request)
u, err := AuthenticateRequest(cx.Request)
if err != nil {
// No Auth is not damning. Other errors are probably a dead db connection
if err.Error() != e.NoAuth {
if err.Error() == e.MongoDocNotFound {
cx.RespondWithErrorMessage("Invalid username or password", http.StatusBadRequest)
return
} else {
fmt.Println("Error at Auth:", err.Error())
cx.RespondWithError(http.StatusInternalServerError)
return
}
}
}
// Fake public user
if u == nil {
u = &user.User{Uuid: ""}
}
node, err := ds.LoadNode(id, u.Uuid)
if err != nil {
if err.Error() == e.UnAuth {
fmt.Println("Unauthorized")
cx.RespondWithError(http.StatusUnauthorized)
return
} else if err.Error() == e.MongoDocNotFound {
cx.RespondWithNotFound()
return
} else {
// In theory the db connection could be lost between
// checking user and load but seems unlikely.
fmt.Println("Err@node_Update:LoadNode:", err.Error())
cx.RespondWithError(http.StatusInternalServerError)
return
}
}
params, files, err := ParseMultipartForm(cx.Request)
if err != nil {
fmt.Println("err", err.Error())
cx.RespondWithError(http.StatusBadRequest)
return
}
err = node.Update(params, files)
if err != nil {
errors := []string{"node file already set and is immutable", "node file immutable", "node attributes immutable", "node part already exists and is immutable"}
for e := range errors {
if err.Error() == errors[e] {
cx.RespondWithErrorMessage(err.Error(), http.StatusBadRequest)
return
}
}
fmt.Println("err", err.Error())
cx.RespondWithError(http.StatusBadRequest)
return
}
cx.RespondWithData(node)
return
}