func downloadChunk(n lib.Node, opts lib.Opts, filename string, offset int64, c chan int) {
oh, err := os.OpenFile(filename, os.O_RDWR, 0644)
if err != nil {
fmt.Printf("Error open output file %s: %s\n", filename, err.Error())
}
defer oh.Close()
_, err = oh.Seek(offset, os.SEEK_SET)
if err != nil {
fmt.Printf("Error seek output file %s: %s\n", filename, err.Error())
}
if ih, err := n.Download(opts); err != nil {
fmt.Printf("Error downloading %s: %s\n", n.Id, err.Error())
} else {
if s, err := io.Copy(oh, ih); err != nil {
fmt.Printf("Error writing output: %s\n", err.Error())
} else {
fmt.Printf("Success. Wrote %d bytes\n", s)
}
}
c <- 1
}
func main() {
if len(os.Args) == 1 || os.Args[1] == "help" {
helpf("")
}
cmd := os.Args[1]
args := conf.Initialize(os.Args[2:])
setToken(false)
switch cmd {
case "create", "update":
n := lib.Node{}
if cmd == "update" {
if len(args) != 1 {
helpf("update requires <id>")
} else {
n.Id = args[0]
}
}
opts := lib.Opts{}
if ne(conf.Flags["attributes"]) {
opts["attributes"] = (*conf.Flags["attributes"])
}
if t, err := fileOptions(conf.Flags); err != nil {
helpf(err.Error())
} else {
if t == "part" {
if cmd == "create" {
helpf("part option only usable with update")
}
if !ne(conf.Flags["file"]) {
helpf("part option requires file")
}
opts["upload_type"] = t
opts["part"] = (*conf.Flags["part"])
opts["file"] = (*conf.Flags["file"])
if err := n.Update(opts); err != nil {
handleString(fmt.Sprintf("Error updating %s: %s\n", n.Id, err.Error()))
} else {
n.PP()
}
} else {
if t != "" {
opts["upload_type"] = t
opts[t] = (*conf.Flags[t])
if cmd == "create" {
if err := n.Create(opts); err != nil {
handleString(fmt.Sprintf("Error creating node: %s\n", err.Error()))
} else {
n.PP()
}
} else {
if err := n.Update(opts); err != nil {
handleString(fmt.Sprintf("Error updating %s: %s\n", n.Id, err.Error()))
} else {
n.PP()
}
}
} else {
if err := n.Create(opts); err != nil {
handleString(fmt.Sprintf("Error creating node: %s\n", err.Error()))
} else {
n.PP()
}
}
}
}
case "pcreate":
pcreate(args)
case "get":
if len(args) != 1 {
helpf("get requires <id>")
}
n := lib.Node{Id: args[0]}
if err := n.Get(); err != nil {
fmt.Printf("Error retrieving %s: %s\n", n.Id, err.Error())
} else {
n.PP()
}
case "download":
if len(args) < 1 {
helpf("download requires <id>")
}
index := conf.Flags["index"]
parts := conf.Flags["parts"]
indexOptions := conf.Flags["index_options"]
opts := lib.Opts{}
if ne(index) || ne(parts) || ne(indexOptions) {
if ne(index) && ne(parts) {
opts["index"] = (*index)
opts["parts"] = (*parts)
if ne(indexOptions) {
opts["index_options"] = (*indexOptions)
}
} else {
helpf("index and parts options must be used together")
}
}
n := lib.Node{Id: args[0]}
if ih, err := n.Download(opts); err != nil {
fmt.Printf("Error downloading %s: %s\n", n.Id, err.Error())
} else {
if len(args) == 3 {
if oh, err := os.Create(args[1]); err == nil {
if s, err := io.Copy(oh, ih); err != nil {
handleString(fmt.Sprintf("Error writing output: %s\n", err.Error()))
} else {
fmt.Printf("Success. Wrote %d bytes\n", s)
}
} else {
handleString(fmt.Sprintf("Error writing output: %s\n", err.Error()))
}
} else {
io.Copy(os.Stdout, ih)
}
}
case "pdownload":
if len(args) < 1 {
helpf("pdownload requires <id>")
}
n := lib.Node{Id: args[0]}
if err := n.Get(); err != nil {
handleString(fmt.Sprintf("Error retrieving %s: %s\n", n.Id, err.Error()))
}
totalChunk := int(n.File.Size / conf.CHUNK_SIZE)
m := n.File.Size % conf.CHUNK_SIZE
if m != 0 {
totalChunk += 1
}
if totalChunk < 1 {
totalChunk = 1
}
splits := conf.DOWNLOAD_THREADS
if ne(conf.Flags["threads"]) {
if th, err := strconv.Atoi(*conf.Flags["threads"]); err == nil {
splits = th
}
}
if totalChunk < splits {
splits = totalChunk
}
fmt.Printf("downloading using %d threads\n", splits)
var filename string
if len(args) == 2 {
filename = args[1]
} else {
filename = n.Id
}
oh, err := os.Create(filename)
if err != nil {
handleString(fmt.Sprintf("Error creating output file %s: %s\n", filename, err.Error()))
return
}
oh.Close()
ch := make(chan int, 1)
split_size := totalChunk / splits
remainder := totalChunk % splits
//splitting, if total chunk is 10, each split will have 3,3,2,2 chunks respectively
for i := 0; i < splits; i++ {
var start, end int
if i < remainder {
start = (split_size+1)*i + 1
end = start + split_size
} else {
start = (split_size+1)*remainder + split_size*(i-remainder) + 1
end = start + split_size - 1
}
part_string := fmt.Sprintf("%d-%d", start, end)
opts := lib.Opts{}
opts["index"] = "size"
opts["parts"] = part_string
opts["index_options"] = fmt.Sprintf("chunk_size=%d", conf.CHUNK_SIZE)
start_offset := (int64(start) - 1) * conf.CHUNK_SIZE
go downloadChunk(n, opts, filename, start_offset, ch)
}
for i := 0; i < splits; i++ {
<-ch
}
case "auth":
if len(args) < 1 {
helpf("auth requires show/set/set-token/unset")
}
switch args[0] {
case "set":
var username, password string
fmt.Printf("Please authenticate to store your credentials.\nusername: "******"password: "******"Authenticated but failed to store token: %s\n", err.Error()))
}
fmt.Printf("Authenticated credentials stored for user %s. Expires in %d days.\n", t.UserName, t.ExpiresInDays())
} else {
fmt.Printf("%s\n", err.Error())
}
case "set-token":
if len(args) != 2 {
helpf("auth set-token requires token.")
}
t := &lib.Token{}
if err := json.Unmarshal([]byte(args[1]), &t); err != nil {
handleString("Invalid auth token.\n")
}
if err := t.Store(); err != nil {
handleString(fmt.Sprintf("Failed to store token: %s\n", err.Error()))
}
fmt.Printf("Authenticated credentials stored for user %s. Expires in %d days.\n", t.UserName, t.ExpiresInDays())
case "unset":
t := &lib.Token{}
if err := t.Delete(); err != nil {
fmt.Printf("%s\n", err.Error())
} else {
fmt.Printf("Stored authentication credentials have been deleted.\n")
}
case "show":
t := &lib.Token{}
if err := t.Load(); err != nil {
handleToken(err)
} else {
fmt.Printf("Authenticated credentials stored for user %s. Expires in %d days.\n", t.UserName, t.ExpiresInDays())
}
}
case "acl":
if len(args) != 4 {
helpf("acl requires 4 arguments")
}
if err := acl(args[0], args[1], args[2], args[3]); err != nil {
handle(err)
}
case "chown":
if len(args) != 2 {
helpf("chown requires <user> and <id>")
}
if err := acl("chown", "", args[0], args[1]); err != nil {
handle(err)
}
default:
helpf("invalid command")
}
}
func main() {
args := flag.Args()
if *conf.Examples {
helpf("Coming soon.")
}
if len(args) == 0 {
helpf("")
}
switch args[0] {
case "create", "update":
n := lib.Node{}
if args[0] == "update" {
if len(args) != 2 {
helpf("update requires <id>")
} else {
n.Id = args[1]
}
}
opts := lib.Opts{}
if ne(conf.Flags["attributes"]) {
opts["attributes"] = (*conf.Flags["attributes"])
}
if t, err := fileOptions(conf.Flags); err != nil {
helpf(err.Error())
} else {
if t == "part" {
if args[0] == "create" {
helpf("part option only usable with update")
}
if !ne(conf.Flags["file"]) {
helpf("part option requires file")
}
opts["upload_type"] = t
opts["part"] = (*conf.Flags["part"])
opts["file"] = (*conf.Flags["file"])
if err := n.Update(opts); err != nil {
fmt.Printf("Error updating %s: %s\n", n.Id, err.Error())
} else {
n.PP()
}
} else {
if t != "" {
opts["upload_type"] = t
opts[t] = (*conf.Flags[t])
if args[0] == "create" {
if err := n.Create(opts); err != nil {
fmt.Printf("Error creating node: %s\n", err.Error())
} else {
n.PP()
}
} else {
if err := n.Update(opts); err != nil {
fmt.Printf("Error updating %s: %s\n", n.Id, err.Error())
} else {
n.PP()
}
}
} else {
if err := n.Create(opts); err != nil {
fmt.Printf("Error creating node: %s\n", err.Error())
} else {
n.PP()
}
}
}
}
case "get":
if len(args) != 2 {
helpf("get requires <id>")
}
n := lib.Node{Id: args[1]}
if err := n.Get(); err != nil {
fmt.Printf("Error retrieving %s: %s\n", n.Id, err.Error())
} else {
n.PP()
}
case "download":
if len(args) < 2 {
helpf("download requires <id>")
}
index := conf.Flags["index"]
parts := conf.Flags["parts"]
indexOptions := conf.Flags["index_options"]
opts := lib.Opts{}
if ne(index) || ne(parts) || ne(indexOptions) {
if ne(index) && ne(parts) {
opts["index"] = (*index)
opts["parts"] = (*parts)
if ne(indexOptions) {
opts["index_options"] = (*indexOptions)
}
} else {
helpf("index and parts options must be used together")
}
}
n := lib.Node{Id: args[1]}
if ih, err := n.Download(opts); err != nil {
fmt.Printf("Error downloading %s: %s\n", n.Id, err.Error())
} else {
if len(args) == 3 {
if oh, err := os.Create(args[2]); err == nil {
if s, err := io.Copy(oh, ih); err != nil {
fmt.Printf("Error writing output: %s\n", err.Error())
} else {
fmt.Printf("Success. Wrote %d bytes\n", s)
}
} else {
fmt.Printf("Error writing output: %s\n", err.Error())
}
} else {
io.Copy(os.Stdout, ih)
}
}
case "auth":
if len(args) != 2 {
helpf("auth requires show/set/unset")
}
switch args[1] {
case "set":
var username, password string
fmt.Printf("Please authenticate to store your credentials.\nusername: "******"password: "******"Authenticated but failed to store token: %s\n", err.Error())
}
fmt.Printf("Authenticated credentials stored for user %s. Expires in %d days.\n", t.UserName, t.ExpiresInDays())
} else {
fmt.Printf("%s\n", err.Error())
}
case "unset":
t := &lib.Token{}
if err := t.Delete(); err != nil {
fmt.Printf("%s\n", err.Error())
} else {
fmt.Printf("Stored authentication credentials have been deleted.\n")
}
case "show":
t := &lib.Token{}
if err := t.Load(); err != nil {
handleToken(err)
} else {
fmt.Printf("Authenticated credentials stored for user %s. Expires in %d days.\n", t.UserName, t.ExpiresInDays())
}
}
case "acl":
if len(args) != 5 {
helpf("acl requires 4 arguments")
}
setToken(true)
if err := acl(args[1], args[2], args[3], args[4]); err != nil {
handle(err)
}
case "chown":
if len(args) != 3 {
helpf("chown requires <user> and <id>")
}
setToken(true)
if err := acl("chown", "", args[1], args[2]); err != nil {
handle(err)
}
default:
helpf("invalid command")
}
}