dmaap-mediator-producer/main.go

   1 // -
   2 //   ========================LICENSE_START=================================
   3 //   O-RAN-SC
   4 //   %%
   5 //   Copyright (C) 2021: Nordix Foundation
   6 //   %%
   7 //   Licensed under the Apache License, Version 2.0 (the "License");
   8 //   you may not use this file except in compliance with the License.
   9 //   You may obtain a copy of the License at
  10 //
  11 //        http://www.apache.org/licenses/LICENSE-2.0
  12 //
  13 //   Unless required by applicable law or agreed to in writing, software
  14 //   distributed under the License is distributed on an "AS IS" BASIS,
  15 //   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16 //   See the License for the specific language governing permissions and
  17 //   limitations under the License.
  18 //   ========================LICENSE_END===================================
  19 //
  20
  21 package main
  22
  23 import (
  24         "crypto/tls"
  25         "fmt"
  26         "net/http"
  27         "time"
  28
  29         log "github.com/sirupsen/logrus"
  30         "oransc.org/nonrtric/dmaapmediatorproducer/internal/config"
  31         "oransc.org/nonrtric/dmaapmediatorproducer/internal/jobs"
  32         "oransc.org/nonrtric/dmaapmediatorproducer/internal/restclient"
  33         "oransc.org/nonrtric/dmaapmediatorproducer/internal/server"
  34 )
  35
  36 var configuration *config.Config
  37
  38 func init() {
  39         configuration = config.New()
  40 }
  41
  42 func main() {
  43         log.SetLevel(configuration.LogLevel)
  44         log.Debug("Initializing DMaaP Mediator Producer")
  45         log.Debug("Using configuration: ", configuration)
  46         if err := validateConfiguration(configuration); err != nil {
  47                 log.Fatalf("Stopping producer due to error: %v", err)
  48         }
  49         callbackAddress := fmt.Sprintf("%v:%v", configuration.InfoProducerHost, configuration.InfoProducerPort)
  50
  51         var cert tls.Certificate
  52         if c, err := restclient.CreateClientCertificate(configuration.ProducerCertPath, configuration.ProducerKeyPath); err == nil {
  53                 cert = c
  54         } else {
  55                 log.Fatalf("Stopping producer due to error: %v", err)
  56         }
  57         retryClient := restclient.CreateRetryClient(cert)
  58
  59         jobsManager := jobs.NewJobsManagerImpl(retryClient, configuration.DMaaPMRAddress, restclient.CreateClientWithoutRetry(cert, 10*time.Second))
  60         if err := registerTypesAndProducer(jobsManager, configuration.InfoCoordinatorAddress, callbackAddress, retryClient); err != nil {
  61                 log.Fatalf("Stopping producer due to: %v", err)
  62         }
  63         jobsManager.StartJobsForAllTypes()
  64
  65         log.Debug("Starting DMaaP Mediator Producer")
  66         go func() {
  67                 log.Debugf("Starting callback server at port %v", configuration.InfoProducerPort)
  68                 r := server.NewRouter(jobsManager)
  69                 if restclient.IsUrlSecure(callbackAddress) {
  70                         log.Fatalf("Server stopped: %v", http.ListenAndServeTLS(fmt.Sprintf(":%v", configuration.InfoProducerPort), configuration.ProducerCertPath, configuration.ProducerKeyPath, r))
  71                 } else {
  72                         log.Fatalf("Server stopped: %v", http.ListenAndServe(fmt.Sprintf(":%v", configuration.InfoProducerPort), r))
  73                 }
  74         }()
  75
  76         keepProducerAlive()
  77 }
  78
  79 func validateConfiguration(configuration *config.Config) error {
  80         if configuration.InfoProducerHost == "" {
  81                 return fmt.Errorf("missing INFO_PRODUCER_HOST")
  82         }
  83         if configuration.ProducerCertPath == "" || configuration.ProducerKeyPath == "" {
  84                 return fmt.Errorf("missing PRODUCER_CERT and/or PRODUCER_KEY")
  85         }
  86         return nil
  87 }
  88 func registerTypesAndProducer(jobTypesHandler jobs.JobTypesManager, infoCoordinatorAddress string, callbackAddress string, client restclient.HTTPClient) error {
  89         registrator := config.NewRegistratorImpl(infoCoordinatorAddress, client)
  90         configTypes, err := config.GetJobTypesFromConfiguration("configs/type_config.json")
  91         if err != nil {
  92                 return fmt.Errorf("unable to register all types due to: %v", err)
  93         }
  94         regErr := registrator.RegisterTypes(jobTypesHandler.LoadTypesFromConfiguration(configTypes))
  95         if regErr != nil {
  96                 return fmt.Errorf("unable to register all types due to: %v", regErr)
  97         }
  98
  99         producer := config.ProducerRegistrationInfo{
 100                 InfoProducerSupervisionCallbackUrl: callbackAddress + server.StatusPath,
 101                 SupportedInfoTypes:                 jobTypesHandler.GetSupportedTypes(),
 102                 InfoJobCallbackUrl:                 callbackAddress + server.AddJobPath,
 103         }
 104         if err := registrator.RegisterProducer("DMaaP_Mediator_Producer", &producer); err != nil {
 105                 return fmt.Errorf("unable to register producer due to: %v", err)
 106         }
 107         return nil
 108 }
 109
 110 func keepProducerAlive() {
 111         forever := make(chan int)
 112         <-forever
 113 }