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[ric-plt/e2mgr.git] / E2Manager / managers / e2t_keep_alive_worker.go

diff --git a/E2Manager/managers/e2t_keep_alive_worker.go b/E2Manager/managers/e2t_keep_alive_worker.go
new file mode 100644 (file)
index 0000000..45c5c08
--- /dev/null
+++ b/E2Manager/managers/e2t_keep_alive_worker.go
@@ -0,0 +1,85 @@
+//
+// 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.
+//
+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() {
+
+       request := models.RmrMessage{MsgType: rmrCgo.E2_TERM_KEEP_ALIVE_REQ}
+       h.rmrSender.SendWithoutLogs(&request)
+}
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