Golang tree_log.Error函数代码示例

func HandleTriggerCustomEvent(e *tree_event.Event, api_cmd Command) {
	var (
		out        = &WriterCallback{BufferMaxSize: 1024}
		event_name = string(api_cmd.Data)
		err        tree_lib.TreeError
		ev_data    []byte
	)
	err.From = tree_lib.FROM_TRIGGER_CUSTOM_EVENT
	out.OutCallback = func(data []byte, ended bool) {
		cb_cmd := api_cmd
		cb_cmd.Ended = ended
		cb_cmd.Data = data
		ev_data, err.Err = ffjson.Marshal(cb_cmd)
		if !err.IsNull() {
			tree_log.Error(err.From, err.Error())
			return
		}
		SendCommandCallback(e, ev_data)
	}
	defer out.End()
	err = custom_event.Trigger(event_name, out)
	if !err.IsNull() {
		tree_log.Error(err.From, err.Error())
	}
}

func HandleContainerCommand(ev *tree_event.Event, cmd Command) {
	var (
		out        = &WriterCallback{BufferMaxSize: 1024}
		docker_cmd = tree_docker.DockerCmd{}
		err        tree_lib.TreeError
		ev_data    []byte
	)
	err.From = tree_lib.FROM_HANDLE_CONTAINER_COMMAND
	err.Err = ffjson.Unmarshal(cmd.Data, &docker_cmd)
	if !err.IsNull() {
		tree_log.Error(err.From, "unable to unmarshal command data as a docker command -> ", err.Error())
		return
	}
	out.OutCallback = func(data []byte, ended bool) {
		cb_cmd := cmd
		cb_cmd.Ended = ended
		cb_cmd.Data = data
		ev_data, err.Err = ffjson.Marshal(cb_cmd)
		if !err.IsNull() {
			tree_log.Error(err.From, err.Error())
			return
		}
		SendCommandCallback(ev, ev_data)
	}

	defer out.End()

	tree_docker.ContainerCommands(&docker_cmd, out)
}

// Executing some commands using exec.Command functionality from Go in OS
func HandleExecCommand(e *tree_event.Event, api_cmd Command) {
	var (
		out         = &WriterCallback{BufferMaxSize: 1024}
		cmd_str     = string(api_cmd.Data)
		cmd_options = strings.Split(cmd_str, " ")
		cmd         = exec.Command(cmd_options[0], cmd_options[1:]...)
		err         tree_lib.TreeError
		ev_data     []byte
	)
	err.From = tree_lib.FROM_HANDLE_EXEC_COMMAND
	out.OutCallback = func(data []byte, ended bool) {
		cb_cmd := api_cmd
		cb_cmd.Ended = ended
		cb_cmd.Data = data
		ev_data, err.Err = ffjson.Marshal(cb_cmd)
		if !err.IsNull() {
			tree_log.Error(err.From, err.Error())
			return
		}
		SendCommandCallback(e, ev_data)
	}

	defer out.End()

	cmd.Stdout = out
	cmd.Stderr = out
	err.Err = cmd.Run()
	if !err.IsNull() {
		tree_log.Error(err.From, err.Error())
	}
}

// Init API node for connection to targets
func API_INIT(targets ...string) bool {
	var err tree_lib.TreeError
	err.From = tree_lib.FROM_API_INIT
	if len(targets) == 0 {
		tree_log.Error(err.From, "For running API client you need to specify target node(s) to connect")
		return false
	}
	for _, n := range targets {
		node_info.ChildsNodeInfo[n], err = tree_db.GetNodeInfo(n)
		if !err.IsNull() {
			tree_log.Error(err.From, fmt.Sprintf("Unable Getting target (%s) node info from Node database, ", n), err.Error())
			return false
		}
	}

	rand.Seed(time.Now().UnixNano())
	node_info.CurrentNodeInfo = node_info.NodeInfo{
		Name:   fmt.Sprintf("%s|%s", API_NAME_PREFIX, tree_lib.RandomString(10)),
		Childs: targets,
		// Getting next prime number based on Unix Timestamp nanoseconds and
		// TODO: Think about making this in a different way
		Value: tree_lib.NextPrimeNumber((1 * rand.Int63n(100)) + int64(100)),
	}

	node_info.CurrentNodeValue = big.NewInt(node_info.CurrentNodeInfo.Value)

	// Setting node values based on child list
	node_info.CalculateChildParentNodeValues()

	// After we have child information lets connect to them
	node_info.ChildsConnectionUpdate()

	return true
}

func BuildCmdHandler(cmd *cobra.Command, args []string) {
	var (
		silent, force, multiple bool
		err                     error
	)

	silent, err = cmd.Flags().GetBool("silent")
	if err != nil {
		tree_log.Error(log_from_tree_build, "Unable to get 'silent' flag", err.Error())
		return
	}

	force, err = cmd.Flags().GetBool("force")
	if err != nil {
		tree_log.Error(log_from_tree_build, "Unable to get 'force' flag", err.Error())
		return
	}

	multiple, err = cmd.Flags().GetBool("multiple")
	if err != nil {
		tree_log.Error(log_from_tree_build, "Unable to get 'force' flag", err.Error())
		return
	}

	generate_tmp_db_dir()
	// Adding fake flag for not duplicating code, and calling 'config' command
	cmd.Flags().String("out", tmp_db_dir, "")
	fmt.Println("Dumping Database file for transfer -> ", tmp_db_dir)
	CompileConfig(cmd, args) // After this step we have config in GLOBAL_CONFIG  variable and db file for sending to nodes

	BuildTree(&GLOBAL_CONFIG, silent, force, multiple)
}

func HandleDelete(cmd *cobra.Command, args []string) {
	var (
		node      string
		target    []string
		tag       []string
		group     []string
		container string
		err       tree_lib.TreeError
	)
	err.From = tree_lib.FROM_HANDLE_DELETE
	node, err.Err = cmd.Flags().GetString("node")
	if !err.IsNull() {
		tree_log.Error(err.From, err.Error())
		return
	}
	target, err.Err = cmd.Flags().GetStringSlice("target")
	if !err.IsNull() {
		tree_log.Error(err.From, err.Error())
		return
	}
	container, err.Err = cmd.Flags().GetString("container")
	if !err.IsNull() {
		tree_log.Error(err.From, err.Error())
		return
	}
	var (
		docker_cmd = tree_docker.DockerCmd{}
	)
	docker_cmd.Content = make(map[string]string)
	docker_cmd.Command = tree_docker.COMMAND_DOCKER_CONTAINER_DELETE
	docker_cmd.Content["container"] = container
	SendDockerCommand(docker_cmd, node, target, tag, group)
}

func ListenParent() (err tree_lib.TreeError) {
	var (
		addr *net.TCPAddr
		conn *net.TCPConn
	)
	err.From = tree_lib.FROM_LISTEN_PARENT
	// If port is not set, setting it to default 8888
	if node_info.CurrentNodeInfo.TreePort == 0 {
		node_info.CurrentNodeInfo.TreePort = 8888
	}

	addr, err.Err = net.ResolveTCPAddr("tcp", fmt.Sprintf("%s:%d", node_info.CurrentNodeInfo.TreeIp, node_info.CurrentNodeInfo.TreePort))
	if !err.IsNull() {
		tree_log.Error(err.From, "Network Listen function", err.Error())
		return
	}

	listener, err.Err = net.ListenTCP("tcp", addr)
	if !err.IsNull() {
		tree_log.Error(err.From, "Network Listen function", err.Error())
		return
	}

	for {
		conn, err.Err = listener.AcceptTCP()
		if !err.IsNull() {
			tree_log.Error(err.From, err.Error())
			return
		}

		// Handle Parent connection
		go handle_api_or_parent_connection(conn)
	}
	return
}

func HandleNodeCommand(cmd *cobra.Command, args []string) {
	var (
		name string
		err  tree_lib.TreeError
	)
	err.From = tree_lib.FROM_HANDLE_NODE_COMMAND
	name, err.Err = cmd.Flags().GetString("set-name")
	if !err.IsNull() {
		tree_log.Error(err.From, err.Error())
	}

	// If we have set-name flag then we just setting current_node in database and exiting
	if len(name) > 0 {
		tree_db.Set(tree_db.DB_RANDOM, []byte("current_node"), []byte(name))
		return
	}
	daemon := false
	daemon, err.Err = cmd.Flags().GetBool("daemon")
	if !err.IsNull() {
		tree_log.Error(err.From, err.Error())
		return
	}

	if daemon {
		cmd := exec.Command("/bin/sh", "-c", fmt.Sprintf("%s node > %s 2>&1 &", os.Args[0], tree_log.LogFile))
		err.Err = cmd.Run()
		if !err.IsNull() {
			log.Fatal(err.Err)
		}
		return
	}

	name, err.Err = cmd.Flags().GetString("name")
	if !err.IsNull() {
		tree_log.Error(err.From, err.Error())
		return
	}

	if len(name) == 0 {
		current_node_byte, err := tree_db.Get(tree_db.DB_RANDOM, []byte("current_node"))
		if !err.IsNull() {
			tree_log.Error(err.From, "Getting current node name from Random database, ", err.Error())
			return
		}
		if len(current_node_byte) == 0 {
			fmt.Println("Name is important for the first time run")
			return
		}
	} else {
		err = tree_node.SetCurrentNode(name)
		if !err.IsNull() {
			tree_log.Error(err.From, err.Error())
			return
		}
	}

	tree_node.Start()
}

func HandleAddCustomEventHandlers(e *tree_event.Event, api_cmd Command) {
	var (
		out          = &WriterCallback{BufferMaxSize: 1024}
		handler_data map[string]interface{}
		err          tree_lib.TreeError
		ev_data      []byte
	)
	err.From = tree_lib.FROM_ADD_CUSTOM_EVENT
	err.Err = ffjson.Unmarshal(api_cmd.Data, &handler_data)
	if !err.IsNull() {
		tree_log.Error(err.From, err.Error())
		return
	}

	out.OutCallback = func(data []byte, ended bool) {
		cb_cmd := api_cmd
		cb_cmd.Ended = ended
		cb_cmd.Data = data
		ev_data, err.Err = ffjson.Marshal(cb_cmd)
		if !err.IsNull() {
			tree_log.Error(err.From, err.Error())
			return
		}
		SendCommandCallback(e, ev_data)
	}
	defer out.End()

	event_name := handler_data["name"].(string)
	handles_interfaces := handler_data["handlers"].([]interface{})
	var (
		handles_interfaces_data []byte
		handlers                []custom_event.Handler
	)
	handles_interfaces_data, err.Err = ffjson.Marshal(handles_interfaces)
	if !err.IsNull() {
		tree_log.Error(err.From, err.Error())
		return
	}

	err.Err = ffjson.Unmarshal(handles_interfaces_data, &handlers)
	if !err.IsNull() {
		tree_log.Error(err.From, err.Error())
		return
	}

	err = custom_event.ON(event_name, handlers...)
	if !err.IsNull() {
		tree_log.Error(err.From, err.Error())
	}
}

func SendToConn(data []byte, conn *net.TCPConn, path *big.Int) {
	// making variable for combining send data
	var (
		err           tree_lib.TreeError
		path_len_data = make([]byte, 4)
		msg_len_data  = make([]byte, 4)
		path_data     = path.Bytes()
		path_len      = uint32(len(path_data))
		buf           = bytes.Buffer{}
	)

	err.From = tree_lib.FROM_SEND_TO_CONN

	binary.LittleEndian.PutUint32(path_len_data, path_len)
	binary.LittleEndian.PutUint32(msg_len_data, path_len+uint32(len(data))+uint32(4))

	buf.Write(msg_len_data)
	buf.Write(path_len_data)
	buf.Write(path_data)
	buf.Write(data)

	if conn != nil {
		_, err.Err = conn.Write(buf.Bytes())
		if !err.IsNull() {
			tree_log.Error(err.From, fmt.Sprintf("Error sending data to path [%s]", path.String()), err.Error())
		}
	}

	buf.Reset()
}

func SendDockerCommand(cmd tree_docker.DockerCmd, node string, target []string, tag []string, group []string) {
	var err tree_lib.TreeError
	if !tree_api.API_INIT(node) {
		fmt.Println("Unable to init api client")
		fmt.Println("Exiting ...")
		return
	}
	err.From = tree_lib.FROM_SEND_DOCKER_COMMAND
	var (
		api_cmd = tree_api.Command{}
		wait    = make(chan bool)
	)

	api_cmd.ID = tree_lib.RandomString(20)
	api_cmd.Data, err.Err = ffjson.Marshal(cmd)
	if !err.IsNull() {
		tree_log.Error(err.From, err.Error())
		return
	}
	api_cmd.CommandType = tree_api.COMMAND_CONTAINER

	tree_event.ON(tree_event.ON_CHILD_CONNECTED, func(ev *tree_event.Event) {
		path := &tree_graph.Path{From: node, Nodes: target, Groups: group, Tags: tag}
		tree_api.SendCommand(&api_cmd, path, func(e *tree_event.Event, c tree_api.Command) bool {
			fmt.Println(string(c.Data))
			fmt.Println(c.Ended)
			if c.Ended {
				return false
			}
			return true
		})
		wait <- true
	})
	<-wait
}

func HandleUpdateCommand(ev *tree_event.Event, cmd Command) {
	var (
		data Command
		info node_info.NodeInfo
		err  tree_lib.TreeError
	)
	err.From = tree_lib.FROM_HANDLE_UPDATE_COMMAND
	err.Err = ffjson.Unmarshal(ev.Data, &data)
	if !err.IsNull() {
		tree_log.Error(err.From, err.Error())
	}
	err.Err = ffjson.Unmarshal(data.Data, &info)
	if !err.IsNull() {
		tree_log.Error(err.From, err.Error())
	}
	UpdateNodeChange(info)
	SendCommandCallback(ev, ev.Data)
}

func RestoreFromConfigDump(cmd *cobra.Command, args []string) {
	var (
		dump_file string
		err       tree_lib.TreeError
	)
	err.From = tree_lib.FROM_RESTORE_FROM_CONFIG_DUMP
	dump_file, err.Err = cmd.Flags().GetString("file")
	if !err.IsNull() {
		tree_log.Error(err.From, err.Error())
		return
	}

	err = tree_db.LoadFromDumpPath(dump_file)
	if !err.IsNull() {
		tree_log.Error(err.From, err.Error())
		return
	}
}

func PathFiles(conf_type string, paths []string) ([]string, tree_lib.TreeError) {
	var (
		err_r     tree_lib.TreeError
		names     []string
		FileNames func(path string) (err tree_lib.TreeError)
	)
	err_r.From = tree_lib.FROM_PATH_FILES
	FileNames = func(path string) (err tree_lib.TreeError) {
		err.From = tree_lib.FROM_PATH_FILES
		files_in_dir, e := ioutil.ReadDir(path)
		err.Err = e
		if !err.IsNull() {
			tree_log.Error(err.From, err.Error())
			return
		}

		for _, a := range files_in_dir {
			if !a.IsDir() {
				if strings.Replace(filepath.Ext(a.Name())[0:], ".", "", 1) == conf_type {
					names = append(names, fmt.Sprintf("%s/%s", path, a.Name()))
				}
			} else {
				err = FileNames(fmt.Sprintf("%s/%s", path, a.Name()))
				if !err.IsNull() {
					tree_log.Error(err.From, err.Error())
					return
				}
			}
		}
		return
	}

	for _, a := range paths {
		if string([]rune(a)[len(a)-1]) == "/" {
			a = a[:len(a)-1]
		}
		err_r = FileNames(a)
		if !err_r.IsNull() {
			tree_log.Error(err_r.From, err_r.Error())
			return nil, err_r
		}
	}
	return names, err_r
}

func SetParent(name string) bool {
	var err tree_lib.TreeError
	err.From = tree_lib.FROM_SET_PARENT
	node_info.ParentNodeInfo, err = tree_db.GetNodeInfo(name)
	if !err.IsNull() {
		tree_log.Error(err.From, "Getting parent node info from Node database, ", err.Error())
		return false
	}
	return true
}