2 * ============LICENSE_START=======================================================
3 * BBS-RELOCATION-CPE-AUTHENTICATION-HANDLER
4 * ================================================================================
5 * Copyright (C) 2019 NOKIA Intellectual Property. All rights reserved.
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
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.onap.bbs.event.processor.utilities;
23 import static org.onap.bbs.event.processor.utilities.CommonEventFields.COMMON_FORMAT;
24 import static org.onap.bbs.event.processor.utilities.CommonEventFields.CORRELATION_ID;
25 import static org.onap.bbs.event.processor.utilities.ReRegistrationEventFields.ADDITIONAL_FIELDS;
26 import static org.onap.bbs.event.processor.utilities.ReRegistrationEventFields.ATTACHMENT_POINT;
27 import static org.onap.bbs.event.processor.utilities.ReRegistrationEventFields.CVLAN;
28 import static org.onap.bbs.event.processor.utilities.ReRegistrationEventFields.REMOTE_ID;
29 import static org.onap.bbs.event.processor.utilities.ReRegistrationEventFields.SVLAN;
31 import com.google.gson.Gson;
32 import com.google.gson.JsonElement;
33 import com.google.gson.JsonObject;
34 import com.google.gson.JsonParser;
36 import java.util.Optional;
37 import java.util.stream.StreamSupport;
39 import org.onap.bbs.event.processor.exceptions.DmaapException;
40 import org.onap.bbs.event.processor.model.ImmutableReRegistrationConsumerDmaapModel;
41 import org.onap.bbs.event.processor.model.ReRegistrationConsumerDmaapModel;
42 import org.slf4j.Logger;
43 import org.slf4j.LoggerFactory;
44 import org.springframework.util.StringUtils;
46 import reactor.core.publisher.Flux;
47 import reactor.core.publisher.Mono;
49 public class ReRegistrationDmaapConsumerJsonParser {
51 private static final Logger LOGGER = LoggerFactory.getLogger(ReRegistrationDmaapConsumerJsonParser.class);
52 private static final Gson gson = new Gson();
54 private static final String RE_REGISTRATION_DUMPING_TEMPLATE = "%n{"
55 + "\"" + CORRELATION_ID + COMMON_FORMAT + ","
56 + "\"" + ATTACHMENT_POINT + COMMON_FORMAT + ","
57 + "\"" + REMOTE_ID + COMMON_FORMAT + ","
58 + "\"" + CVLAN + COMMON_FORMAT + ","
59 + "\"" + SVLAN + COMMON_FORMAT
62 private String pnfCorrelationId;
64 private String attachmentPoint;
65 private String remoteId;
70 * Translates a response from DMaaP to a reactive {@link ReRegistrationConsumerDmaapModel} model.
71 * @param dmaapResponse Response from DMaaP
72 * @return Re-Registration Consumer DMaaP reactive model
74 public Flux<ReRegistrationConsumerDmaapModel> extractModelFromDmaap(Mono<JsonElement> dmaapResponse) {
76 .flatMapMany(this::createTargetFlux);
79 private Flux<ReRegistrationConsumerDmaapModel> createTargetFlux(JsonElement jsonElement) {
80 if (jsonElement.isJsonObject()) {
81 return doCreateTargetFlux(Flux.defer(() -> Flux.just(jsonElement.getAsJsonObject())));
83 return doCreateTargetFlux(
84 Flux.defer(() -> Flux.fromStream(StreamSupport.stream(jsonElement.getAsJsonArray().spliterator(), false)
85 .map(jsonElementFromArray -> getJsonObjectFromAnArray(jsonElementFromArray)
86 .orElseGet(JsonObject::new)))));
89 private Flux<ReRegistrationConsumerDmaapModel> doCreateTargetFlux(Flux<JsonObject> jsonObject) {
91 .flatMap(this::transform)
92 .onErrorResume(exception -> exception instanceof DmaapException, e -> Mono.empty());
95 private Mono<ReRegistrationConsumerDmaapModel> transform(JsonObject dmaapResponseJsonObject) {
97 LOGGER.trace("Event from DMaaP to be parsed: \n{}", gson.toJson(dmaapResponseJsonObject));
99 if (!containsProperHeaders(dmaapResponseJsonObject)) {
100 LOGGER.warn("Incorrect JsonObject - missing headers");
104 JsonObject pnfReRegistrationFields =
105 dmaapResponseJsonObject.getAsJsonObject(ADDITIONAL_FIELDS);
107 pnfCorrelationId = getValueFromJson(dmaapResponseJsonObject, CORRELATION_ID);
109 attachmentPoint = getValueFromJson(pnfReRegistrationFields, ATTACHMENT_POINT);
110 remoteId = getValueFromJson(pnfReRegistrationFields, REMOTE_ID);
111 cvlan = getValueFromJson(pnfReRegistrationFields, CVLAN);
112 svlan = getValueFromJson(pnfReRegistrationFields, SVLAN);
114 if (StringUtils.isEmpty(pnfCorrelationId) || anyImportantPropertyMissing()) {
115 String incorrectEvent = dumpJsonData();
116 LOGGER.warn("Incorrect Re-Registration JSON event: {}", incorrectEvent);
120 return Mono.just(ImmutableReRegistrationConsumerDmaapModel.builder()
121 .correlationId(pnfCorrelationId)
122 .attachmentPoint(attachmentPoint)
129 private boolean anyImportantPropertyMissing() {
130 return StringUtils.isEmpty(attachmentPoint)
131 || StringUtils.isEmpty(remoteId)
132 || StringUtils.isEmpty(cvlan)
133 || StringUtils.isEmpty(svlan);
136 private boolean containsProperHeaders(JsonObject jsonObject) {
137 return jsonObject.has(ADDITIONAL_FIELDS);
140 private String dumpJsonData() {
141 return String.format(RE_REGISTRATION_DUMPING_TEMPLATE,
150 Optional<JsonObject> getJsonObjectFromAnArray(JsonElement element) {
151 JsonParser jsonParser = new JsonParser();
152 return element.isJsonPrimitive() ? Optional.of(jsonParser.parse(element.getAsString()).getAsJsonObject())
153 : Optional.of(jsonParser.parse(element.toString()).getAsJsonObject());
156 private String getValueFromJson(JsonObject jsonObject, String jsonKey) {
157 return jsonObject.has(jsonKey) ? jsonObject.get(jsonKey).getAsString() : "";