E2Manager/managers/e2t_keep_alive_worker.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 package managers
  18
  19 import (
  20         "e2mgr/configuration"
  21         "e2mgr/logger"
  22         "e2mgr/models"
  23         "e2mgr/rmrCgo"
  24         "e2mgr/services/rmrsender"
  25         "time"
  26 )
  27
  28 type E2TKeepAliveWorker struct {
  29         logger              *logger.Logger
  30         e2tShutdownManager  IE2TShutdownManager
  31         e2TInstancesManager IE2TInstancesManager
  32         rmrSender           *rmrsender.RmrSender
  33         config              *configuration.Configuration
  34 }
  35
  36 func NewE2TKeepAliveWorker(logger *logger.Logger, rmrSender *rmrsender.RmrSender, e2TInstancesManager IE2TInstancesManager, e2tShutdownManager IE2TShutdownManager, config *configuration.Configuration) E2TKeepAliveWorker {
  37         return E2TKeepAliveWorker{
  38                 logger:              logger,
  39                 e2tShutdownManager:  e2tShutdownManager,
  40                 e2TInstancesManager: e2TInstancesManager,
  41                 rmrSender:           rmrSender,
  42                 config:              config,
  43         }
  44 }
  45
  46 func (h E2TKeepAliveWorker) Execute() {
  47
  48         h.logger.Infof("#E2TKeepAliveWorker.Execute - keep alive started")
  49
  50         ticker := time.NewTicker(time.Duration(h.config.KeepAliveDelayMs) * time.Millisecond)
  51
  52         for _= range ticker.C {
  53
  54                 h.SendKeepAliveRequest()
  55                 h.E2TKeepAliveExpired()
  56         }
  57 }
  58
  59 func (h E2TKeepAliveWorker) E2TKeepAliveExpired() {
  60
  61         e2tInstances, err := h.e2TInstancesManager.GetE2TInstancesNoLogs()
  62
  63         if err != nil || len(e2tInstances) == 0 {
  64                 return
  65         }
  66
  67         for _, e2tInstance := range e2tInstances {
  68
  69                 delta := int64(time.Now().UnixNano()) - e2tInstance.KeepAliveTimestamp
  70                 timestampNanosec := int64(time.Duration(h.config.KeepAliveResponseTimeoutMs) * time.Millisecond)
  71
  72                 if delta > timestampNanosec {
  73
  74                         h.logger.Warnf("#E2TKeepAliveWorker.E2TKeepAliveExpired - e2t address: %s time expired, shutdown e2 instance", e2tInstance.Address)
  75
  76                         h.e2tShutdownManager.Shutdown(e2tInstance)
  77                 }
  78         }
  79 }
  80
  81 func (h E2TKeepAliveWorker) SendKeepAliveRequest() {
  82
  83         request := models.RmrMessage{MsgType: rmrCgo.E2_TERM_KEEP_ALIVE_REQ}
  84         h.rmrSender.SendWithoutLogs(&request)
  85 }