func apiInitSlots(r *http.Request) (int, string) {
r.ParseForm()
isForce := false
val := r.FormValue("is_force")
if len(val) > 0 && (val == "1" || val == "true") {
isForce = true
}
conn := CreateCoordConn()
defer conn.Close()
if !isForce {
s, _ := models.Slots(conn, globalEnv.ProductName())
if len(s) > 0 {
return 500, "slots already initialized, you may use 'is_force' flag and try again."
}
}
if err := models.InitSlotSet(conn, globalEnv.ProductName(), models.DEFAULT_SLOT_NUM); err != nil {
log.Warning(err)
return 500, err.Error()
}
return jsonRetSucc()
}
func apiGetSlots() (int, string) {
conn := CreateCoordConn()
defer conn.Close()
slots, err := models.Slots(conn, globalEnv.ProductName())
if err != nil {
log.Warning("Error getting slot info, try init slots first? err: ", err)
return 500, err.Error()
}
b, err := json.MarshalIndent(slots, " ", " ")
return 200, string(b)
}
func getLivingNodeInfos(coordConn zkhelper.Conn) ([]*NodeInfo, error) {
groups, err := models.ServerGroups(coordConn, globalEnv.ProductName())
if err != nil {
return nil, errors.Trace(err)
}
slots, err := models.Slots(coordConn, globalEnv.ProductName())
slotMap := make(map[int][]int)
for _, slot := range slots {
if slot.State.Status == models.SLOT_STATUS_ONLINE {
slotMap[slot.GroupId] = append(slotMap[slot.GroupId], slot.Id)
}
}
var ret []*NodeInfo
for _, g := range groups {
master, err := g.Master(coordConn)
if err != nil {
return nil, errors.Trace(err)
}
if master == nil {
return nil, errors.Errorf("group %d has no master", g.Id)
}
out, err := utils.GetRedisConfig(master.Addr, "MAXMEMORY", globalEnv.StoreAuth())
if err != nil {
return nil, errors.Trace(err)
}
maxMem, err := strconv.ParseInt(out, 10, 64)
if err != nil {
return nil, errors.Trace(err)
}
if maxMem <= 0 {
return nil, errors.Errorf("redis %s should set maxmemory", master.Addr)
}
node := &NodeInfo{
GroupId: g.Id,
CurSlots: slotMap[g.Id],
MaxMemory: maxMem,
}
ret = append(ret, node)
}
cnt := 0
for _, info := range ret {
cnt += len(info.CurSlots)
}
if cnt != models.DEFAULT_SLOT_NUM {
return nil, errors.New("not all slots are online")
}
return ret, nil
}