colosseum-near-rt-ric/setup/e2mgr/E2Manager/managers/e2t_keep_alive_worker.go

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2021-12-08 21:17:46 +01:00
//
// Copyright 2019 AT&T Intellectual Property
// Copyright 2019 Nokia
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// This source code is part of the near-RT RIC (RAN Intelligent Controller)
// platform project (RICP).
package managers
import (
"e2mgr/configuration"
"e2mgr/logger"
"e2mgr/models"
"e2mgr/rmrCgo"
"e2mgr/services/rmrsender"
"time"
)
type E2TKeepAliveWorker struct {
logger *logger.Logger
e2tShutdownManager IE2TShutdownManager
e2TInstancesManager IE2TInstancesManager
rmrSender *rmrsender.RmrSender
config *configuration.Configuration
}
func NewE2TKeepAliveWorker(logger *logger.Logger, rmrSender *rmrsender.RmrSender, e2TInstancesManager IE2TInstancesManager, e2tShutdownManager IE2TShutdownManager, config *configuration.Configuration) E2TKeepAliveWorker {
return E2TKeepAliveWorker{
logger: logger,
e2tShutdownManager: e2tShutdownManager,
e2TInstancesManager: e2TInstancesManager,
rmrSender: rmrSender,
config: config,
}
}
func (h E2TKeepAliveWorker) Execute() {
h.logger.Infof("#E2TKeepAliveWorker.Execute - keep alive started")
ticker := time.NewTicker(time.Duration(h.config.KeepAliveDelayMs) * time.Millisecond)
for _ = range ticker.C {
h.SendKeepAliveRequest()
h.E2TKeepAliveExpired()
}
}
func (h E2TKeepAliveWorker) E2TKeepAliveExpired() {
e2tInstances, err := h.e2TInstancesManager.GetE2TInstancesNoLogs()
if err != nil || len(e2tInstances) == 0 {
return
}
for _, e2tInstance := range e2tInstances {
delta := int64(time.Now().UnixNano()) - e2tInstance.KeepAliveTimestamp
timestampNanosec := int64(time.Duration(h.config.KeepAliveResponseTimeoutMs) * time.Millisecond)
if delta > timestampNanosec {
h.logger.Warnf("#E2TKeepAliveWorker.E2TKeepAliveExpired - e2t address: %s time expired, shutdown e2 instance", e2tInstance.Address)
h.e2tShutdownManager.Shutdown(e2tInstance)
}
}
}
func (h E2TKeepAliveWorker) SendKeepAliveRequest() {
rmrMessage := models.RmrMessage{MsgType: rmrCgo.E2_TERM_KEEP_ALIVE_REQ}
h.rmrSender.SendWithoutLogs(&rmrMessage)
}