func (self *FrontServer) Lock(lockName string, client trib.Storage, succ *bool) error {
if e := client.Set(&trib.KeyValue{lockName, self.id}, succ); e != nil {
return e
} else {
return nil
}
}
// unlock return true means no other server modified data
func (self *FrontServer) Unlock(lockName string, client trib.Storage) (bool, error) {
value := ""
if e := client.Get(lockName, &value); e != nil {
return false, e
}
if value == self.id {
return true, nil
} else {
return false, nil
}
}
func CheckStorage(t *testing.T, s trib.Storage) {
var v string
var b bool
var l = new(trib.List)
var n int
ne := func(e error) {
if e != nil {
debug.PrintStack()
t.Fatal(e)
}
}
as := func(cond bool) {
if !cond {
debug.PrintStack()
t.Fatal("assertion failed")
}
}
kv := func(k, v string) *trib.KeyValue {
return &trib.KeyValue{k, v}
}
pat := func(pre, suf string) *trib.Pattern {
return &trib.Pattern{pre, suf}
}
v = "_"
ne(s.Get("", &v))
as(v == "")
v = "_"
ne(s.Get("hello", &v))
as(v == "")
ne(s.Set(kv("h8liu", "run"), &b))
as(b)
v = ""
ne(s.Get("h8liu", &v))
as(v == "run")
ne(s.Set(kv("h8liu", "Run"), &b))
as(b)
v = ""
ne(s.Get("h8liu", &v))
as(v == "Run")
ne(s.Set(kv("h8liu", ""), &b))
as(b)
v = "_"
ne(s.Get("h8liu", &v))
as(v == "")
ne(s.Set(kv("h8liu", "k"), &b))
as(b)
v = "_"
ne(s.Get("h8liu", &v))
as(v == "k")
ne(s.Set(kv("h8he", "something"), &b))
as(b)
v = "_"
ne(s.Get("h8he", &v))
as(v == "something")
ne(s.Keys(pat("h8", ""), l))
sort.Strings(l.L)
as(len(l.L) == 2)
as(l.L[0] == "h8he")
as(l.L[1] == "h8liu")
ne(s.ListGet("lst", l))
fmt.Println("DEBUG in test: ", l.L)
as(l.L != nil && len(l.L) == 0)
ne(s.ListAppend(kv("lst", "a"), &b))
as(b)
ne(s.ListGet("lst", l))
as(len(l.L) == 1)
as(l.L[0] == "a")
ne(s.ListAppend(kv("lst", "a"), &b))
as(b)
ne(s.ListGet("lst", l))
as(len(l.L) == 2)
as(l.L[0] == "a")
as(l.L[1] == "a")
ne(s.ListRemove(kv("lst", "a"), &n))
as(n == 2)
ne(s.ListGet("lst", l))
as(l.L != nil && len(l.L) == 0)
ne(s.ListAppend(kv("lst", "h8liu"), &b))
as(b)
ne(s.ListAppend(kv("lst", "h7liu"), &b))
as(b)
ne(s.ListGet("lst", l))
as(len(l.L) == 2)
as(l.L[0] == "h8liu")
as(l.L[1] == "h7liu")
ne(s.ListKeys(pat("ls", "st"), l))
as(len(l.L) == 1)
as(l.L[0] == "lst")
ne(s.ListKeys(pat("z", ""), l))
as(l.L != nil && len(l.L) == 0)
ne(s.ListKeys(pat("", ""), l))
as(len(l.L) == 1)
as(l.L[0] == "lst")
}
func runCmd(s trib.Storage, args []string) bool {
var v string
var b bool
var lst trib.List
var n int
var cret uint64
cmd := args[0]
switch cmd {
case "get":
logError(s.Get(single(args), &v))
fmt.Println(v)
case "set":
logError(s.Set(kva(args), &b))
fmt.Println(b)
case "keys":
logError(s.Keys(pata(args), &lst))
printList(lst)
case "list-get":
logError(s.ListGet(single(args), &lst))
printList(lst)
case "list-append":
logError(s.ListAppend(kva(args), &b))
fmt.Println(b)
case "list-remove":
logError(s.ListRemove(kva(args), &n))
fmt.Println(n)
case "list-keys":
logError(s.ListKeys(pata(args), &lst))
printList(lst)
case "clock":
var c uint64
var e error
if len(args) >= 2 {
c, e = strconv.ParseUint(args[1], 10, 64)
logError(e)
}
logError(s.Clock(c, &cret))
fmt.Println(cret)
case "help":
fmt.Println(cmdHelp)
case "exit":
return true
default:
logError(fmt.Errorf("bad command, try \"help\"."))
}
return false
}