policy-agent/src/main/java/org/oransc/policyagent/tasks/StartupService.java

   1 /*-
   2  * ========================LICENSE_START=================================
   3  * O-RAN-SC
   4  * %%
   5  * Copyright (C) 2019 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 org.oransc.policyagent.tasks;
  22
  23 import org.oransc.policyagent.clients.A1ClientFactory;
  24 import org.oransc.policyagent.configuration.ApplicationConfig;
  25 import org.oransc.policyagent.configuration.ApplicationConfig.RicConfigUpdate;
  26 import org.oransc.policyagent.configuration.RicConfig;
  27 import org.oransc.policyagent.repository.Policies;
  28 import org.oransc.policyagent.repository.PolicyTypes;
  29 import org.oransc.policyagent.repository.Ric;
  30 import org.oransc.policyagent.repository.Rics;
  31 import org.oransc.policyagent.repository.Services;
  32 import org.slf4j.Logger;
  33 import org.slf4j.LoggerFactory;
  34 import org.springframework.beans.factory.annotation.Autowired;
  35 import org.springframework.core.Ordered;
  36 import org.springframework.core.annotation.Order;
  37 import org.springframework.stereotype.Service;
  38
  39 /**
  40  * Loads information about RealTime-RICs at startup.
  41  */
  42 @Service("startupService")
  43 @Order(Ordered.HIGHEST_PRECEDENCE)
  44 public class StartupService implements ApplicationConfig.Observer {
  45
  46     private static final Logger logger = LoggerFactory.getLogger(StartupService.class);
  47
  48     @Autowired
  49     ApplicationConfig applicationConfig;
  50
  51     @Autowired
  52     RefreshConfigTask refreshConfigTask;
  53
  54     @Autowired
  55     private Rics rics;
  56
  57     @Autowired
  58     PolicyTypes policyTypes;
  59
  60     @Autowired
  61     private A1ClientFactory a1ClientFactory;
  62
  63     @Autowired
  64     private Policies policies;
  65
  66     @Autowired
  67     private Services services;
  68
  69     // Only for unit testing
  70     StartupService(ApplicationConfig appConfig, RefreshConfigTask refreshTask, Rics rics, PolicyTypes policyTypes,
  71         A1ClientFactory a1ClientFactory, Policies policies, Services services) {
  72         this.applicationConfig = appConfig;
  73         this.refreshConfigTask = refreshTask;
  74         this.rics = rics;
  75         this.policyTypes = policyTypes;
  76         this.a1ClientFactory = a1ClientFactory;
  77         this.policies = policies;
  78         this.services = services;
  79     }
  80
  81     @Override
  82     public void onRicConfigUpdate(RicConfig ricConfig, RicConfigUpdate event) {
  83         synchronized (this.rics) {
  84             switch (event) {
  85                 case ADDED:
  86                 case CHANGED:
  87                     Ric ric = new Ric(ricConfig);
  88                     rics.put(ric);
  89                     RicSynchronizationTask synchronizationTask = createSynchronizationTask();
  90                     synchronizationTask.run(ric);
  91                     break;
  92
  93                 case REMOVED:
  94                     rics.remove(ricConfig.name());
  95                     policies.removePoliciesForRic(ricConfig.name());
  96                     break;
  97
  98                 default:
  99                     logger.error("Unhandled ric event: {}", event);
 100             }
 101         }
 102     }
 103
 104     /**
 105      * Reads the configured Rics and performs the service discovery. The result is put into the repository.
 106      */
 107     public void startup() {
 108         logger.debug("Starting up");
 109         applicationConfig.addObserver(this);
 110         refreshConfigTask.start();
 111     }
 112
 113     RicSynchronizationTask createSynchronizationTask() {
 114         return new RicSynchronizationTask(a1ClientFactory, policyTypes, policies, services);
 115     }
 116 }