func init() {
var err tree_lib.TreeError
err.From = tree_lib.FROM_INIT
tree_db, err.Err = bolt.Open(DB_DIR, 0600, nil)
if !err.IsNull() {
tree_log.Error(log_from_db, " unable to open database", err.Error())
tree_db = nil
os.Exit(1) // Without database we can't keep and share configurations, so program should be exited
}
// creating Buckets in database
tree_db.Update(func(tx *bolt.Tx) (err error) {
// Setting databases
for _, d := range [][]byte{DB_NODE, DB_BALANCER, DB_RANDOM, DB_GROUP, DB_TAG, DB_RELATIONS, DB_REGISTRY, DB_EVENT} {
_, err = tx.CreateBucketIfNotExists(d)
if err != nil {
return err
}
}
return nil
})
// Handling node change event
tree_event.ON(tree_event.ON_UPDATE_NODE_INFO, func(e *tree_event.Event) {
var (
info node_info.NodeInfo
ev_info node_info.NodeInfo
names []string
data []byte
mark bool
)
err.Err = ffjson.Unmarshal(e.Data, &ev_info)
if !err.IsNull() {
tree_log.Error(err.From, err.Error())
return
}
info, err = GetNodeInfo(ev_info.Name)
if !err.IsNull() {
tree_log.Error(err.From, err.Error())
return
}
if len(info.Name) > 0 {
err = DeleteNodeFromHisGroups(info.Name)
if !err.IsNull() {
tree_log.Error(err.From, err.Error())
return
}
err = DeleteNodeFromHisTags(info.Name)
if !err.IsNull() {
tree_log.Error(err.From, err.Error())
return
}
if len(ev_info.TreeIp) > 0 {
info.TreeIp = ev_info.TreeIp
mark = true
}
if ev_info.TreePort != -1 {
info.TreePort = ev_info.TreePort
mark = true
}
if len(ev_info.Childs[0]) > 0 {
info.Childs = append(info.Childs, ev_info.Childs[0])
}
if len(ev_info.Childs[1]) > 0 {
if g, ok := tree_lib.ArrayContains(info.Childs, ev_info.Childs[1]); ok {
info.Childs = info.Childs[:g+copy(info.Childs[g:], info.Childs[g+1:])]
}
}
if len(ev_info.Groups[0]) > 0 {
info.Groups = append(info.Groups, ev_info.Groups[0])
}
if len(ev_info.Groups[1]) > 0 {
if g, ok := tree_lib.ArrayContains(info.Groups, ev_info.Groups[1]); ok {
info.Groups = info.Groups[:g+copy(info.Groups[g:], info.Groups[g+1:])]
}
}
if len(ev_info.Tags[0]) > 0 {
info.Tags = append(info.Tags, ev_info.Tags[0])
}
if len(ev_info.Tags[1]) > 0 {
if g, ok := tree_lib.ArrayContains(info.Tags, ev_info.Tags[1]); ok {
info.Tags = info.Tags[:g+copy(info.Tags[g:], info.Tags[g+1:])]
}
}
data, err.Err = ffjson.Marshal(info)
if !err.IsNull() {
tree_log.Error(err.From, err.Error())
return
}
err = Set(DB_NODE, []byte(ev_info.Name), data)
if !err.IsNull() {
tree_log.Error(err.From, err.Error())
return
}
names, err = ListNodeNames()
if !err.IsNull() {
tree_log.Error(err.From, err.Error())
return
}
err = AddNodeToHisGroups(info.Name)
if !err.IsNull() {
tree_log.Error(err.From, err.Error())
return
}
err = AddNodeToHisTags(info.Name)
if !err.IsNull() {
tree_log.Error(err.From, err.Error())
return
}
for _, n := range names {
err = SetRelations(n)
if !err.IsNull() {
tree_log.Error(err.From, err.Error())
return
}
}
if node_info.CurrentNodeInfo.Name == ev_info.Name && mark {
var e1 tree_event.Event
e1.Name = tree_event.ON_RESTART_NODE
tree_event.Trigger(&e1)
}
} else {
err = Set(DB_NODE, []byte(ev_info.Name), e.Data)
if !err.IsNull() {
tree_log.Error(err.From, err.Error())
return
}
names, err = ListNodeNames()
if !err.IsNull() {
tree_log.Error(err.From, err.Error())
return
}
err = AddNodeToHisGroups(ev_info.Name)
if !err.IsNull() {
tree_log.Error(err.From, err.Error())
return
}
err = AddNodeToHisTags(ev_info.Name)
if !err.IsNull() {
tree_log.Error(err.From, err.Error())
return
}
for _, n := range names {
err = SetRelations(n)
if !err.IsNull() {
tree_log.Error(err.From, err.Error())
return
}
}
if node_info.CurrentNodeInfo.Name == ev_info.Name {
var e1 *tree_event.Event
e1.Name = tree_event.ON_RESTART_NODE
tree_event.Trigger(e1)
}
}
})
// Closing database before program will be exited
// Just in case if program exiting force or we don't want to make dead lock
tree_event.ON(tree_event.ON_PROGRAM_EXIT, func(e *tree_event.Event) {
CloseDB()
})
}
func UpdateInfo(cmd *cobra.Command, args []string) {
var (
node string
err tree_lib.TreeError
target string
ip string
port int
add_to_group string
delete_from_group string
add_to_tag string
delete_from_tag string
delete_child string
add_child string
info node_info.NodeInfo
)
err.From = tree_lib.FROM_UPDATE_INFO
node, err.Err = cmd.Flags().GetString("node")
if !err.IsNull() {
tree_log.Error(err.From, err.Error())
return
}
target, err.Err = cmd.Flags().GetString("target")
if !err.IsNull() {
tree_log.Error(err.From, err.Error())
return
}
ip, err.Err = cmd.Flags().GetString("ip")
if !err.IsNull() {
tree_log.Error(err.From, err.Error())
return
}
port, err.Err = cmd.Flags().GetInt("port")
if !err.IsNull() {
tree_log.Error(err.From, err.Error())
return
}
add_to_group, err.Err = cmd.Flags().GetString("add_group")
if !err.IsNull() {
tree_log.Error(err.From, err.Error())
return
}
delete_from_group, err.Err = cmd.Flags().GetString("delete_group")
if !err.IsNull() {
tree_log.Error(err.From, err.Error())
return
}
add_to_tag, err.Err = cmd.Flags().GetString("add_tag")
if !err.IsNull() {
tree_log.Error(err.From, err.Error())
return
}
delete_from_tag, err.Err = cmd.Flags().GetString("delete_tag")
if !err.IsNull() {
tree_log.Error(err.From, err.Error())
return
}
add_child, err.Err = cmd.Flags().GetString("add_child")
if !err.IsNull() {
tree_log.Error(err.From, err.Error())
return
}
delete_child, err.Err = cmd.Flags().GetString("delete_child")
if !err.IsNull() {
tree_log.Error(err.From, err.Error())
return
}
if !tree_api.API_INIT(node) {
fmt.Println("Unable to init api client")
fmt.Println("Exiting ...")
return
}
info.Name = target
info.TreeIp = ip
info.TreePort = port
info.Childs = append(info.Childs, add_child, delete_child)
info.Groups = append(info.Groups, add_to_group, delete_from_group)
info.Tags = append(info.Tags, add_to_tag, delete_from_tag)
var (
api_cmd = tree_api.Command{}
wait = make(chan bool)
)
api_cmd.ID = tree_lib.RandomString(20)
api_cmd.Data, err.Err = ffjson.Marshal(info)
if !err.IsNull() {
tree_log.Error(err.From, err.Error())
return
}
api_cmd.CommandType = tree_api.COMMAND_UPDATE
tree_event.ON(tree_event.ON_CHILD_CONNECTED, func(ev *tree_event.Event) {
path := &tree_graph.Path{From: node, Nodes: []string{node}}
tree_api.SendCommand(&api_cmd, path, func(e *tree_event.Event, c tree_api.Command) bool {
return false
})
wait <- true
})
<-wait
}