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 java.util.Collection;
25 import org.oransc.policyagent.clients.A1Client;
26 import org.oransc.policyagent.clients.A1ClientFactory;
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.Ric.RicState;
31 import org.oransc.policyagent.repository.Rics;
32 import org.oransc.policyagent.repository.Services;
33 import org.slf4j.Logger;
34 import org.slf4j.LoggerFactory;
35 import org.springframework.beans.factory.annotation.Autowired;
36 import org.springframework.scheduling.annotation.EnableScheduling;
37 import org.springframework.scheduling.annotation.Scheduled;
38 import org.springframework.stereotype.Component;
40 import reactor.core.publisher.Flux;
41 import reactor.core.publisher.Mono;
44 * Regularly checks the exisiting rics towards the local repository to keep it consistent.
48 public class RepositorySupervision {
49 private static final Logger logger = LoggerFactory.getLogger(RepositorySupervision.class);
51 private final Rics rics;
52 private final Policies policies;
53 private final PolicyTypes policyTypes;
54 private final A1ClientFactory a1ClientFactory;
55 private final Services services;
58 public RepositorySupervision(Rics rics, Policies policies, A1ClientFactory a1ClientFactory, PolicyTypes policyTypes,
61 this.policies = policies;
62 this.a1ClientFactory = a1ClientFactory;
63 this.policyTypes = policyTypes;
64 this.services = services;
68 * Regularly contacts all Rics to check if they are alive.
70 @Scheduled(fixedRate = 1000 * 60)
71 public void checkAllRics() {
72 logger.debug("Checking Rics starting");
73 createTask().subscribe(this::onRicChecked, this::onError, this::onComplete);
76 private Flux<RicData> createTask() {
77 synchronized (this.rics) {
78 return Flux.fromIterable(rics.getRics()) //
79 .flatMap(ric -> createRicData(ric)) //
80 .flatMap(ricData -> checkRicState(ricData)) //
81 .flatMap(ricData -> checkRicPolicies(ricData)) //
82 .flatMap(ricData -> checkRicPolicyTypes(ricData));
86 private static class RicData {
87 RicData(Ric ric, A1Client a1Client) {
89 this.a1Client = a1Client;
93 final A1Client a1Client;
96 private Mono<RicData> createRicData(Ric ric) {
97 return Mono.just(ric) //
98 .flatMap(aRic -> this.a1ClientFactory.createA1Client(ric)) //
99 .flatMap(a1Client -> Mono.just(new RicData(ric, a1Client)));
102 private Mono<RicData> checkRicState(RicData ric) {
103 if (ric.ric.getState() == RicState.UNDEFINED) {
104 return startRecovery(ric);
105 } else if (ric.ric.getState() == RicState.RECOVERING) {
108 return Mono.just(ric);
112 private Mono<RicData> checkRicPolicies(RicData ric) {
113 return ric.a1Client.getPolicyIdentities() //
114 .onErrorResume(t -> Mono.empty()) //
115 .flatMap(ricP -> validateInstances(ricP, ric));
118 private Mono<RicData> validateInstances(Collection<String> ricPolicies, RicData ric) {
119 synchronized (this.policies) {
120 if (ricPolicies.size() != policies.getForRic(ric.ric.name()).size()) {
121 return startRecovery(ric);
124 for (String policyId : ricPolicies) {
125 if (!policies.containsPolicy(policyId)) {
126 return startRecovery(ric);
129 return Mono.just(ric);
132 private Mono<RicData> checkRicPolicyTypes(RicData ric) {
133 return ric.a1Client.getPolicyTypeIdentities() //
134 .onErrorResume(t -> {
137 .flatMap(ricTypes -> validateTypes(ricTypes, ric));
140 private Mono<RicData> validateTypes(Collection<String> ricTypes, RicData ric) {
141 if (ricTypes.size() != ric.ric.getSupportedPolicyTypes().size()) {
142 return startRecovery(ric);
144 for (String typeName : ricTypes) {
145 if (!ric.ric.isSupportingType(typeName)) {
146 return startRecovery(ric);
149 return Mono.just(ric);
152 private Mono<RicData> startRecovery(RicData ric) {
153 RicRecoveryTask recovery = new RicRecoveryTask(a1ClientFactory, policyTypes, policies, services);
154 recovery.run(ric.ric);
158 private void onRicChecked(RicData ric) {
159 logger.info("Ric: " + ric.ric.name() + " checked");
162 private void onError(Throwable t) {
163 logger.error("Rics supervision failed", t);
166 private void onComplete() {
167 logger.debug("Checking Rics completed");