c75140f5bb65b4c23fd0fb772f6a3e1f6cbbbf98
[ric-plt/e2mgr.git] / E2Manager / handlers / rmrmsghandlers / e2_term_init_notification_handler.go
1 //
2 // Copyright 2019 AT&T Intellectual Property
3 // Copyright 2019 Nokia
4 //
5 // Licensed under the Apache License, Version 2.0 (the "License");
6 // you may not use this file except in compliance with the License.
7 // You may obtain a copy of the License at
8 //
9 //      http://www.apache.org/licenses/LICENSE-2.0
10 //
11 // Unless required by applicable law or agreed to in writing, software
12 // distributed under the License is distributed on an "AS IS" BASIS,
13 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 // See the License for the specific language governing permissions and
15 // limitations under the License.
16
17 //  This source code is part of the near-RT RIC (RAN Intelligent Controller)
18 //  platform project (RICP).
19
20
21 package rmrmsghandlers
22
23 import (
24         "e2mgr/clients"
25         "e2mgr/logger"
26         "e2mgr/managers"
27         "e2mgr/models"
28         "encoding/json"
29         "gerrit.o-ran-sc.org/r/ric-plt/nodeb-rnib.git/common"
30         "gerrit.o-ran-sc.org/r/ric-plt/nodeb-rnib.git/entities"
31 )
32
33 type E2TermInitNotificationHandler struct {
34         logger                 *logger.Logger
35         ranReconnectionManager *managers.RanReconnectionManager
36         e2tInstancesManager    managers.IE2TInstancesManager
37         routingManagerClient   clients.IRoutingManagerClient
38 }
39
40 func NewE2TermInitNotificationHandler(logger *logger.Logger, ranReconnectionManager *managers.RanReconnectionManager, e2tInstancesManager managers.IE2TInstancesManager, routingManagerClient clients.IRoutingManagerClient) E2TermInitNotificationHandler {
41         return E2TermInitNotificationHandler{
42                 logger:                 logger,
43                 ranReconnectionManager: ranReconnectionManager,
44                 e2tInstancesManager:    e2tInstancesManager,
45                 routingManagerClient:   routingManagerClient,
46         }
47 }
48
49 func (h E2TermInitNotificationHandler) Handle(request *models.NotificationRequest) {
50         unmarshalledPayload := models.E2TermInitPayload{}
51         err := json.Unmarshal(request.Payload, &unmarshalledPayload)
52
53         if err != nil {
54                 h.logger.Errorf("#E2TermInitNotificationHandler.Handle - Error unmarshaling E2 Term Init payload: %s", err)
55                 return
56         }
57
58         e2tAddress := unmarshalledPayload.Address
59
60         if len(e2tAddress) == 0 {
61                 h.logger.Errorf("#E2TermInitNotificationHandler.Handle - Empty E2T address received")
62                 return
63         }
64
65         h.logger.Infof("#E2TermInitNotificationHandler.Handle - E2T address: %s - handling E2_TERM_INIT", e2tAddress)
66
67         e2tInstance, err := h.e2tInstancesManager.GetE2TInstance(e2tAddress)
68
69         if err != nil {
70                 _, ok := err.(*common.ResourceNotFoundError)
71
72                 if !ok {
73                         h.logger.Errorf("#E2TermInitNotificationHandler.Handle - Failed retrieving E2TInstance. error: %s", err)
74                         return
75                 }
76
77                 h.HandleNewE2TInstance(e2tAddress)
78                 return
79         }
80
81         if len(e2tInstance.AssociatedRanList) == 0 {
82                 h.logger.Infof("#E2TermInitNotificationHandler.Handle - E2T Address: %s - E2T instance has no associated RANs", e2tInstance.Address)
83                 return
84         }
85
86         if e2tInstance.State == entities.ToBeDeleted{
87                 h.logger.Infof("#E2TermInitNotificationHandler.Handle - E2T Address: %s - E2T instance status is: %s, ignore", e2tInstance.Address, e2tInstance.State)
88                 return
89         }
90
91         if e2tInstance.State == entities.RoutingManagerFailure {
92                 err := h.e2tInstancesManager.SetE2tInstanceState(e2tAddress, e2tInstance.State, entities.Active)
93                 if err != nil {
94                         return
95                 }
96         }
97
98         h.HandleExistingE2TInstance(e2tInstance)
99
100         h.logger.Infof("#E2TermInitNotificationHandler.Handle - Completed handling of E2_TERM_INIT")
101 }
102
103 func (h E2TermInitNotificationHandler) HandleExistingE2TInstance(e2tInstance *entities.E2TInstance) {
104
105         for _, ranName := range e2tInstance.AssociatedRanList {
106
107                 if err := h.ranReconnectionManager.ReconnectRan(ranName); err != nil {
108                         h.logger.Errorf("#E2TermInitNotificationHandler.HandleExistingE2TInstance - Ran name: %s - connection attempt failure, error: %s", ranName, err)
109                         _, ok := err.(*common.ResourceNotFoundError)
110                         if !ok {
111                                 break
112                         }
113                 }
114         }
115 }
116
117 func (h E2TermInitNotificationHandler) HandleNewE2TInstance(e2tAddress string) {
118
119         err := h.routingManagerClient.AddE2TInstance(e2tAddress)
120
121         if err != nil{
122                 h.logger.Errorf("#E2TermInitNotificationHandler.HandleNewE2TInstance - e2t address: %s - routing manager failure", e2tAddress)
123                 return
124         }
125
126         _ = h.e2tInstancesManager.AddE2TInstance(e2tAddress)
127 }