pm-file-converter/main.go

   1 // -
   2 //
   3 //      ========================LICENSE_START=================================
   4 //      O-RAN-SC
   5 //      %%
   6 //      Copyright (C) 2023: Nordix Foundation
   7 //      %%
   8 //      Licensed under the Apache License, Version 2.0 (the "License");
   9 //      you may not use this file except in compliance with the License.
  10 //      You may obtain a copy of the License at
  11 //
  12 //           http://www.apache.org/licenses/LICENSE-2.0
  13 //
  14 //      Unless required by applicable law or agreed to in writing, software
  15 //      distributed under the License is distributed on an "AS IS" BASIS,
  16 //      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  17 //      See the License for the specific language governing permissions and
  18 //      limitations under the License.
  19 //      ========================LICENSE_END===================================
  20 package main
  21
  22 import (
  23         "fmt"
  24         jsoniter "github.com/json-iterator/go"
  25         log "github.com/sirupsen/logrus"
  26         "main/common/dataTypes"
  27         "main/common/utils"
  28         "main/components/kafkacollector"
  29         "net/http"
  30         "os"
  31         "os/signal"
  32         "runtime"
  33         "sync"
  34         "syscall"
  35         "time"
  36 )
  37
  38 var ics_server = os.Getenv("ICS")
  39 var self = os.Getenv("SELF")
  40
  41 // This are optional - set if using SASL protocol is used towards kafka
  42 var creds_grant_type = os.Getenv("CREDS_GRANT_TYPE")
  43
  44 var bootstrapserver = os.Getenv("KAFKA_SERVER")
  45
  46 const config_file = "application_configuration.json"
  47 const producer_name = "kafka-producer"
  48
  49 var producer_instance_name string = producer_name
  50
  51 const reader_queue_length = 100 //Per type job
  52 const writer_queue_length = 100 //Per info job
  53
  54 var files_volume = os.Getenv("FILES_VOLUME")
  55
  56 var data_out_channel = make(chan *dataTypes.KafkaPayload, writer_queue_length)
  57 var writer_control = make(chan dataTypes.WriterControl, 1)
  58
  59 const registration_delay_short = 2
  60 const registration_delay_long = 120
  61
  62 //== Variables ==//
  63
  64 var AppState = Init
  65
  66 // Lock for all internal data
  67 var datalock sync.Mutex
  68
  69 const (
  70         Init dataTypes.AppStates = iota
  71         Running
  72         Terminating
  73 )
  74
  75 const registeringProducer = "Registering producer: "
  76
  77 // == Main ==//
  78 func main() {
  79
  80         //log.SetLevel(log.InfoLevel)
  81         log.SetLevel(log.TraceLevel)
  82
  83         log.Info("Server starting...")
  84
  85         if self == "" {
  86                 log.Panic("Env SELF not configured")
  87         }
  88         if bootstrapserver == "" {
  89                 log.Panic("Env KAFKA_SERVER not set")
  90         }
  91         if ics_server == "" {
  92                 log.Panic("Env ICS not set")
  93         }
  94         if os.Getenv("KP") != "" {
  95                 producer_instance_name = producer_instance_name + "-" + os.Getenv("KP")
  96         }
  97
  98         go kafkacollector.StartTopicWriter(writer_control, data_out_channel)
  99
 100         //Setup proc for periodic type registration
 101         var eventChan = make(chan int) //Channel for stopping the proc
 102         go periodicRegistration(eventChan)
 103
 104         //Wait for term/int signal do try to shut down gracefully
 105         sigs := make(chan os.Signal, 1)
 106         signal.Notify(sigs, syscall.SIGINT, syscall.SIGTERM)
 107         go func() {
 108                 sig := <-sigs
 109                 fmt.Printf("Received signal %s - application will terminate\n", sig)
 110                 eventChan <- 0 // Stop periodic registration
 111                 datalock.Lock()
 112                 defer datalock.Unlock()
 113                 AppState = Terminating
 114         }()
 115
 116         AppState = Running
 117
 118         //Wait until all go routines has exited
 119         runtime.Goexit()
 120
 121         fmt.Println("main routine exit")
 122         fmt.Println("server stopped")
 123 }
 124
 125 // == Core functions ==//
 126 // Run periodic registration of producers
 127 func periodicRegistration(evtch chan int) {
 128         var delay int = 1
 129         for {
 130                 select {
 131                 case msg := <-evtch:
 132                         if msg == 0 { // Stop thread
 133                                 return
 134                         }
 135                 case <-time.After(time.Duration(delay) * time.Second):
 136                         ok := registerProducer()
 137                         if ok {
 138                                 delay = registration_delay_long
 139                         } else {
 140                                 if delay < registration_delay_long {
 141                                         delay += registration_delay_short
 142                                 } else {
 143                                         delay = registration_delay_short
 144                                 }
 145                         }
 146                 }
 147         }
 148 }
 149
 150 func registerProducer() bool {
 151
 152         log.Info(registeringProducer, producer_instance_name)
 153
 154         file, err := os.ReadFile(config_file)
 155         if err != nil {
 156                 log.Error("Cannot read config file: ", config_file)
 157                 // NOSONAR
 158                 log.Error(registeringProducer, producer_instance_name, " - failed")
 159                 return false
 160         }
 161         data := dataTypes.DataTypes{}
 162         err = jsoniter.Unmarshal([]byte(file), &data)
 163         if err != nil {
 164                 log.Error("Cannot parse config file: ", config_file)
 165                 // NOSONAR
 166                 log.Error(registeringProducer, producer_instance_name, " - failed")
 167                 return false
 168         }
 169         var newTypeNames []string
 170
 171         for i := 0; i < len(data.ProdDataTypes); i++ {
 172                 t1 := make(map[string]interface{})
 173                 t2 := make(map[string]interface{})
 174
 175                 t2["schema"] = "http://json-schema.org/draft-07/schema#"
 176                 t2["title"] = data.ProdDataTypes[i].ID
 177                 t2["description"] = data.ProdDataTypes[i].ID
 178                 t2["type"] = "object"
 179
 180                 t1["info_job_data_schema"] = t2
 181
 182                 json, err := jsoniter.Marshal(t1)
 183                 if err != nil {
 184                         log.Error("Cannot create json for type: ", data.ProdDataTypes[i].ID)
 185                         // NOSONAR
 186                         log.Error(registeringProducer, producer_instance_name, " - failed")
 187                         return false
 188                 } else {
 189                         ok := utils.SendHttpRequest(json, http.MethodPut, "http://"+ics_server+"/data-producer/v1/info-types/"+data.ProdDataTypes[i].ID, true, creds_grant_type != "")
 190                         if !ok {
 191                                 log.Error("Cannot register type: ", data.ProdDataTypes[i].ID)
 192                                 // NOSONAR
 193                                 log.Error(registeringProducer, producer_instance_name, " - failed")
 194                                 return false
 195                         }
 196                         newTypeNames = append(newTypeNames, data.ProdDataTypes[i].ID)
 197                 }
 198
 199         }
 200
 201         log.Debug("Registering types: ", newTypeNames)
 202         datalock.Lock()
 203         defer datalock.Unlock()
 204
 205         for _, v := range data.ProdDataTypes {
 206                 log.Info("Adding type job for type: ", v.ID, " Type added to configuration")
 207                 startTypeJob(v)
 208         }
 209
 210         dataTypes.InfoTypes = data
 211         log.Debug("Datatypes: ", dataTypes.InfoTypes)
 212         log.Info(registeringProducer, producer_instance_name, " - OK")
 213         return true
 214 }
 215
 216 func startTypeJob(dp dataTypes.DataType) {
 217         log.Info("Starting type job: ", dp.ID)
 218         jobRecord := dataTypes.TypeJobRecord{}
 219
 220         jobRecord.Job_control = make(chan dataTypes.JobControl, 1)
 221         jobRecord.Reader_control = make(chan dataTypes.ReaderControl, 1)
 222         jobRecord.Data_in_channel = make(chan *dataTypes.KafkaPayload, reader_queue_length)
 223         jobRecord.InfoType = dp.ID
 224         jobRecord.InputTopic = dp.KafkaInputTopic
 225         jobRecord.GroupId = "kafka-procon-" + dp.ID
 226         jobRecord.ClientId = dp.ID + "-" + os.Getenv("KP")
 227
 228         switch dp.ID {
 229         case "xml-file-data-to-filestore":
 230                 go kafkacollector.StartJobXmlFileData(dp.ID, jobRecord.Job_control, jobRecord.Data_in_channel, data_out_channel, "", "pm-files-json")
 231         case "xml-file-data":
 232                 go kafkacollector.StartJobXmlFileData(dp.ID, jobRecord.Job_control, jobRecord.Data_in_channel, data_out_channel, files_volume, "")
 233         default:
 234         }
 235
 236         go kafkacollector.StartTopicReader(dp.KafkaInputTopic, dp.ID, jobRecord.Reader_control, jobRecord.Data_in_channel, jobRecord.GroupId, jobRecord.ClientId)
 237
 238         dataTypes.TypeJobs[dp.ID] = jobRecord
 239         log.Debug("Type job input type: ", dp.InputJobType)
 240 }