2 ==================================================================================
3 Copyright (c) 2019 AT&T Intellectual Property.
4 Copyright (c) 2019 Nokia
6 Licensed under the Apache License, Version 2.0 (the "License");
7 you may not use this file except in compliance with the License.
8 You may obtain a copy of the License at
10 http://www.apache.org/licenses/LICENSE-2.0
12 Unless required by applicable law or agreed to in writing, software
13 distributed under the License is distributed on an "AS IS" BASIS,
14 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 See the License for the specific language governing permissions and
16 limitations under the License.
17 ==================================================================================
21 Abstract: mangos (NNG) Pipeline SBI implementation
29 "nanomsg.org/go/mangos/v2"
30 "nanomsg.org/go/mangos/v2/protocol/push"
31 _ "nanomsg.org/go/mangos/v2/transport/all"
32 "routing-manager/pkg/rtmgr"
38 NewSocket CreateNewNngSocketHandler
41 func NewNngPush() *NngPush {
42 instance := new(NngPush)
43 instance.NewSocket = createNewPushSocket
47 func createNewPushSocket() (NngSocket, error) {
48 rtmgr.Logger.Debug("Invoked: createNewPushSocket()")
49 socket, err := push.NewSocket()
51 return nil, errors.New("can't create new push socket due to:" + err.Error())
53 socket.SetPipeEventHook(pipeEventHandler)
57 func pipeEventHandler(event mangos.PipeEvent, pipe mangos.Pipe) {
58 rtmgr.Logger.Debug("Invoked: pipeEventHandler()")
59 for _, ep := range rtmgr.Eps {
60 uri := DefaultNngPipelineSocketPrefix + ep.Ip + ":" + strconv.Itoa(DefaultNngPipelineSocketNumber)
61 if uri == pipe.Address() {
65 rtmgr.Logger.Debug("Endpoint " + uri + " successfully attached")
68 rtmgr.Logger.Debug("Endpoint " + uri + " has been detached")
74 func (c *NngPush) Initialize(ip string) error {
78 func (c *NngPush) Terminate() error {
82 func (c *NngPush) AddEndpoint(ep *rtmgr.Endpoint) error {
85 rtmgr.Logger.Debug("Invoked sbi.AddEndpoint")
86 rtmgr.Logger.Debug("args: %v", *ep)
87 socket, err = c.NewSocket()
89 return errors.New("can't add new socket to endpoint:" + ep.Uuid + " due to: " + err.Error())
94 return errors.New("can't dial to endpoint:" + ep.Uuid + " due to: " + err.Error())
99 func (c *NngPush) DeleteEndpoint(ep *rtmgr.Endpoint) error {
100 rtmgr.Logger.Debug("Invoked sbi. DeleteEndpoint")
101 rtmgr.Logger.Debug("args: %v", *ep)
102 if err := ep.Socket.(NngSocket).Close(); err != nil {
103 return errors.New("can't close push socket of endpoint:" + ep.Uuid + " due to: " + err.Error())
108 func (c *NngPush) UpdateEndpoints(rcs *rtmgr.RicComponents) {
109 c.updateEndpoints(rcs, c)
113 NOTE: Asynchronous dial starts a goroutine which keep maintains the connection to the given endpoint
115 func (c *NngPush) dial(ep *rtmgr.Endpoint) error {
116 rtmgr.Logger.Debug("Dialing to endpoint: " + ep.Uuid)
117 uri := DefaultNngPipelineSocketPrefix + ep.Ip + ":" + strconv.Itoa(DefaultNngPipelineSocketNumber)
118 options := make(map[string]interface{})
119 options[mangos.OptionDialAsynch] = true
120 if err := ep.Socket.(NngSocket).DialOptions(uri, options); err != nil {
121 return errors.New("can't dial on push socket to " + uri + " due to: " + err.Error())
126 func (c *NngPush) DistributeAll(policies *[]string) error {
127 rtmgr.Logger.Debug("Invoked: sbi.DistributeAll")
128 rtmgr.Logger.Debug("args: %v", *policies)
129 for _, ep := range rtmgr.Eps {
131 go c.send(ep, policies)
133 rtmgr.Logger.Warn("Endpoint " + ep.Uuid + " is not ready")
139 func (c *NngPush) send(ep *rtmgr.Endpoint, policies *[]string) {
140 rtmgr.Logger.Debug("Push policy to endpoint: " + ep.Uuid)
141 for _, pe := range *policies {
142 if err := ep.Socket.(NngSocket).Send([]byte(pe)); err != nil {
143 rtmgr.Logger.Error("Unable to send policy entry due to: " + err.Error())
146 rtmgr.Logger.Info("NNG PUSH to endpoint " + ep.Uuid + ": OK (# of Entries:" + strconv.Itoa(len(*policies)) + ")")