2 // ========================LICENSE_START=================================
5 // Copyright (C) 2021: Nordix Foundation
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
11 // http://www.apache.org/licenses/LICENSE-2.0
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===================================
29 "github.com/hashicorp/go-retryablehttp"
30 log "github.com/sirupsen/logrus"
31 "oransc.org/nonrtric/dmaapmediatorproducer/internal/config"
32 "oransc.org/nonrtric/dmaapmediatorproducer/internal/jobs"
33 "oransc.org/nonrtric/dmaapmediatorproducer/internal/restclient"
34 "oransc.org/nonrtric/dmaapmediatorproducer/internal/server"
37 var configuration *config.Config
40 configuration = config.New()
44 log.SetLevel(configuration.LogLevel)
45 log.Debug("Initializing DMaaP Mediator Producer")
46 if err := validateConfiguration(configuration); err != nil {
47 log.Fatalf("Stopping producer due to error: %v", err)
49 callbackAddress := fmt.Sprintf("%v:%v", configuration.InfoProducerHost, configuration.InfoProducerPort)
51 var retryClient restclient.HTTPClient
52 if cert, err := createClientCertificate(); err == nil {
53 retryClient = createRetryClient(cert)
55 log.Fatalf("Stopping producer due to error: %v", err)
58 jobHandler := jobs.NewJobHandlerImpl("configs/type_config.json", retryClient, &http.Client{
59 Timeout: time.Second * 5,
61 if err := registerTypesAndProducer(jobHandler, configuration.InfoCoordinatorAddress, callbackAddress, retryClient); err != nil {
62 log.Fatalf("Stopping producer due to: %v", err)
65 log.Debug("Starting DMaaP Mediator Producer")
67 log.Debugf("Starting callback server at port %v", configuration.InfoProducerPort)
68 r := server.NewRouter(jobHandler)
69 log.Fatalf("Server stopped: %v", http.ListenAndServeTLS(fmt.Sprintf(":%v", configuration.InfoProducerPort), configuration.ProducerCertPath, configuration.ProducerKeyPath, r))
72 go jobHandler.RunJobs(configuration.DMaaPMRAddress)
77 func validateConfiguration(configuration *config.Config) error {
78 if configuration.InfoProducerHost == "" {
79 return fmt.Errorf("missing INFO_PRODUCER_HOST")
81 if configuration.ProducerCertPath == "" || configuration.ProducerKeyPath == "" {
82 return fmt.Errorf("missing PRODUCER_CERT and/or PRODUCER_KEY")
87 func createClientCertificate() (*tls.Certificate, error) {
88 if cert, err := tls.LoadX509KeyPair(configuration.ProducerCertPath, configuration.ProducerKeyPath); err == nil {
91 return nil, fmt.Errorf("cannot create x509 keypair from cert file %s and key file %s due to: %v", configuration.ProducerCertPath, configuration.ProducerKeyPath, err)
95 func createRetryClient(cert *tls.Certificate) *http.Client {
96 rawRetryClient := retryablehttp.NewClient()
97 rawRetryClient.RetryWaitMax = time.Minute
98 rawRetryClient.RetryMax = int(^uint(0) >> 1)
99 rawRetryClient.HTTPClient.Transport = &http.Transport{
100 TLSClientConfig: &tls.Config{
101 Certificates: []tls.Certificate{
104 InsecureSkipVerify: true,
108 return rawRetryClient.StandardClient()
111 func registerTypesAndProducer(jobHandler jobs.JobTypeHandler, infoCoordinatorAddress string, callbackAddress string, client restclient.HTTPClient) error {
112 registrator := config.NewRegistratorImpl(infoCoordinatorAddress, client)
113 if types, err := jobHandler.GetTypes(); err == nil {
114 if regErr := registrator.RegisterTypes(types); regErr != nil {
115 return fmt.Errorf("unable to register all types due to: %v", regErr)
118 return fmt.Errorf("unable to get types to register due to: %v", err)
120 producer := config.ProducerRegistrationInfo{
121 InfoProducerSupervisionCallbackUrl: callbackAddress + server.StatusPath,
122 SupportedInfoTypes: jobHandler.GetSupportedTypes(),
123 InfoJobCallbackUrl: callbackAddress + server.AddJobPath,
125 if err := registrator.RegisterProducer("DMaaP_Mediator_Producer", &producer); err != nil {
126 return fmt.Errorf("unable to register producer due to: %v", err)
131 func keepProducerAlive() {
132 forever := make(chan int)