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/*
* ============LICENSE_START===================================================
* Copyright (c) 2018 Amdocs
* ============================================================================
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* ============LICENSE_END=====================================================
*/
package org.onap.pomba.contextaggregator.datatypes;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.google.gson.JsonArray;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.JsonParser;
import com.google.gson.annotations.Expose;
import com.google.gson.annotations.SerializedName;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.UUID;
import org.onap.pomba.common.datatypes.ModelContext;
import org.onap.pomba.contextaggregator.config.EventHeaderConfig;
public class AggregatedModels {
@Expose
@SerializedName("event-header")
Header entityHeader;
@Expose
@SerializedName("entity")
PoaEntity poaEntity;
/**
* Creates an event with an entity header and entity containing the models and
* poa-event from Dmaap.
*
* @param headerConfig The event header config
* @param jsonContextMap The context map
* @param event The POA Event
*/
public AggregatedModels(EventHeaderConfig headerConfig, Map<String, String> jsonContextMap, POAEvent event) {
entityHeader = new Header(headerConfig);
Gson gson = new GsonBuilder().create();
Map<String, ModelContext> contextMap = new HashMap<>();
List<String> errorTexts = new ArrayList<>();
for (Entry<String, String> entry : jsonContextMap.entrySet()) {
ModelContext context = null;
if (entry.getValue().isEmpty()) {
context = new ModelContext();
} else {
context = gson.fromJson(entry.getValue(), ModelContext.class);
JsonParser parser = new JsonParser();
JsonElement jsonElement = parser.parse(entry.getValue());
errorTexts.addAll(extractErrors(entry.getKey(), jsonElement));
}
contextMap.put(entry.getKey(), context);
}
if (errorTexts.isEmpty()) {
event.setDataQualitySummary(DataQualitySummary.ok());
} else {
// Fill the errors:
event.setDataQualitySummary(DataQualitySummary.error(errorTexts));
}
poaEntity = new PoaEntity(contextMap, event);
}
/**
* Recursive method to find all the dataQuality errors in the JsonElement.
* @param errorPath Path to the current element
* @param jsonElement The json element
* @return list of error strings extracted from the json element and it's children.
*/
private static List<String> extractErrors(String errorPath, JsonElement jsonElement) {
List<String> errorTexts = new ArrayList<>();
if (jsonElement.isJsonArray()) {
JsonArray jsonArray = jsonElement.getAsJsonArray();
for (int i = 0; i < jsonArray.size(); i++) {
JsonElement indexElement = jsonArray.get(i);
errorTexts.addAll(extractErrors(errorPath + "[" + i + "]", indexElement));
}
} else if (jsonElement.isJsonObject()) {
JsonObject jsonObject = jsonElement.getAsJsonObject();
extractErrorsFromJsonObject(errorPath, errorTexts, jsonObject);
}
return errorTexts;
}
private static void extractErrorsFromJsonObject(String errorPath, List<String> errorTexts, JsonObject jsonObject) {
for (Entry<String, JsonElement> entrySet : jsonObject.entrySet()) {
if ("dataQuality".equals(entrySet.getKey())) {
JsonElement dqElement = entrySet.getValue();
JsonObject dqObject = dqElement.getAsJsonObject();
JsonElement dqStatusElement = dqObject.get("status");
if (dqStatusElement == null) {
continue;
}
String statusValue = dqStatusElement.getAsString();
if ("error".equals(statusValue)) {
JsonElement dqErrorTextElement = dqObject.get("errorText");
if (dqErrorTextElement != null) {
String errorTextValue = dqErrorTextElement.getAsString();
errorTexts.add(errorPath + ": " + errorTextValue);
}
}
} else {
// recursive call to extract errors from other JsonElements:
errorTexts.addAll(extractErrors(errorPath + "/" + entrySet.getKey(), entrySet.getValue()));
}
}
}
/**
* Returns this instance as a JSON payload.
*
* @return
*/
public String generateJsonPayload() {
Gson gson = new GsonBuilder().create();
return gson.toJson(this);
}
public Header getEntityHeader() {
return entityHeader;
}
/**
* Entity header class for JSON serialization.
*/
private class Header {
@Expose
private String id;
@Expose
private String domain;
@Expose
@SerializedName("source-name")
private String sourceName;
@Expose
@SerializedName("event-type")
private String eventType;
@Expose
@SerializedName("entity-type")
private String entityType;
@Expose
@SerializedName("top-entity-type")
private String topEntityType;
@Expose
@SerializedName("topic-name")
private String topicName;
@Expose
@SerializedName("event-id")
private String eventId;
public Header(EventHeaderConfig config) {
id = UUID.randomUUID().toString();
domain = config.getDomain();
sourceName = config.getSourceName();
eventType = config.getEventType();
entityType = config.getEntityType();
topEntityType = config.getTopicEntityType();
topicName = config.getTopicName();
eventId = UUID.randomUUID().toString();
}
}
private class PoaEntity {
@Expose
@SerializedName("poa-event")
POAEvent event;
@Expose
@SerializedName("context-list")
private Map<String, ModelContext> contextMap;
public PoaEntity(Map<String, ModelContext> contextMap, POAEvent event) {
this.contextMap = contextMap;
this.event = event;
}
}
}
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