2 * ========================LICENSE_START=================================
5 * Copyright (C) 2019 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===================================
21 package org.oransc.policyagent.tasks;
23 import org.oransc.policyagent.clients.A1Client;
24 import org.oransc.policyagent.configuration.ApplicationConfig;
25 import org.oransc.policyagent.exceptions.ServiceException;
26 import org.oransc.policyagent.repository.ImmutablePolicyType;
27 import org.oransc.policyagent.repository.PolicyType;
28 import org.oransc.policyagent.repository.PolicyTypes;
29 import org.oransc.policyagent.repository.Ric;
30 import org.oransc.policyagent.repository.Ric.RicState;
31 import org.oransc.policyagent.repository.Rics;
32 import org.slf4j.Logger;
33 import org.slf4j.LoggerFactory;
34 import org.springframework.beans.factory.annotation.Autowired;
35 import org.springframework.stereotype.Service;
37 import reactor.core.publisher.Flux;
38 import reactor.core.publisher.Mono;
41 * Loads information about RealTime-RICs at startup.
43 @Service("startupService")
44 public class StartupService {
46 private static final Logger logger = LoggerFactory.getLogger(StartupService.class);
49 ApplicationConfig applicationConfig;
55 PolicyTypes policyTypes;
58 private A1Client a1Client;
60 StartupService(ApplicationConfig appConfig, Rics rics, PolicyTypes policyTypes, A1Client a1Client) {
61 this.applicationConfig = appConfig;
63 this.policyTypes = policyTypes;
64 this.a1Client = a1Client;
68 * Reads the configured Rics and performs the service discovery. The result is put into the repository.
70 public void startup() {
71 applicationConfig.initialize();
72 Flux.fromIterable(applicationConfig.getRicConfigs()) //
73 .map(ricConfig -> new Ric(ricConfig)) //
74 .doOnNext(ric -> logger.debug("Handling ric: {}", ric.getConfig().name())) //
75 .flatMap(this::addPolicyTypesForRic) //
76 .flatMap(this::deletePoliciesForRic) //
77 .doOnNext(rics::put) //
81 private Mono<Ric> addPolicyTypesForRic(Ric ric) {
82 a1Client.getPolicyTypeIdentities(ric.getConfig().baseUrl()) //
83 .doOnNext(typeId -> logger.debug("For ric: {}, handling type: {}", ric.getConfig().name(), typeId))
84 .flatMap((policyTypeId) -> addTypeToRepo(ric, policyTypeId)) //
85 .flatMap(type -> addTypeToRic(ric, type)) //
86 .subscribe(null, cause -> setRicToNotReachable(ric, cause), () -> setRicToActive(ric));
87 return Mono.just(ric);
90 private Mono<PolicyType> addTypeToRepo(Ric ric, String policyTypeId) {
91 if (policyTypes.contains(policyTypeId)) {
93 return Mono.just(policyTypes.getType(policyTypeId));
94 } catch (ServiceException e) {
98 return a1Client.getPolicyType(ric.getConfig().baseUrl(), policyTypeId) //
99 .flatMap(schema -> createPolicyType(policyTypeId, schema));
102 private Mono<PolicyType> createPolicyType(String policyTypeId, String schema) {
103 PolicyType pt = ImmutablePolicyType.builder().name(policyTypeId).schema(schema).build();
105 return Mono.just(pt);
108 private Mono<PolicyType> addTypeToRic(Ric ric, PolicyType policyType) {
109 ric.addSupportedPolicyType(policyType);
110 return Mono.just(policyType);
113 private Mono<Ric> deletePoliciesForRic(Ric ric) {
114 if (!Ric.RicState.NOT_REACHABLE.equals(ric.state())) {
115 a1Client.getPolicyIdentities(ric.getConfig().baseUrl()) //
117 policyId -> logger.debug("Deleting policy: {}, for ric: {}", policyId, ric.getConfig().name()))
118 .flatMap(policyId -> a1Client.deletePolicy(ric.getConfig().baseUrl(), policyId)) //
119 .subscribe(null, cause -> setRicToNotReachable(ric, cause), null);
122 return Mono.just(ric);
125 private void setRicToNotReachable(Ric ric, Throwable t) {
126 ric.setState(Ric.RicState.NOT_REACHABLE);
127 logger.info("Unable to connect to ric {}. Cause: {}", ric.name(), t.getMessage());
130 private void setRicToActive(Ric ric) {
131 ric.setState(RicState.ACTIVE);