diff options
Diffstat (limited to 'src/main/java/org/onap/dcae/common/EventUpdater.java')
| -rw-r--r-- | src/main/java/org/onap/dcae/common/EventUpdater.java | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/src/main/java/org/onap/dcae/common/EventUpdater.java b/src/main/java/org/onap/dcae/common/EventUpdater.java new file mode 100644 index 00000000..1caa4f18 --- /dev/null +++ b/src/main/java/org/onap/dcae/common/EventUpdater.java @@ -0,0 +1,137 @@ +/* + * ============LICENSE_START======================================================= + * PROJECT + * ================================================================================ + * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved. + * Copyright (C) 2019 Nokia. All rights reserved.s + * ================================================================================ + * 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.dcae.common; + +import com.google.common.reflect.TypeToken; +import com.google.gson.Gson; +import java.io.FileReader; +import java.io.IOException; +import java.lang.reflect.Type; +import java.text.SimpleDateFormat; +import java.util.Date; +import java.util.List; +import java.util.UUID; +import org.json.JSONArray; +import org.json.JSONObject; +import org.onap.dcae.ApplicationException; +import org.onap.dcae.ApplicationSettings; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +public class EventUpdater { + + private static final String EVENT_LIST = "eventList"; + private static final String EVENT = "event"; + private static final String VES_UNIQUE_ID = "VESuniqueId"; + private static final String VES_VERSION = "VESversion"; + private static final String COULD_NOT_FIND_FILE = "Couldn't find file ./etc/eventTransform.json"; + private static final Type EVENT_LIST_TYPE = new TypeToken<List<Event>>() {}.getType(); + private static final Logger log = LoggerFactory.getLogger(EventSender.class); + private static final String EVENT_LITERAL = "event"; + private static final String COMMON_EVENT_HEADER = "commonEventHeader"; + private static final String EVENT_TRANSFORM = "./etc/eventTransform.json"; + private ApplicationSettings settings; + private final SimpleDateFormat dateFormat = new SimpleDateFormat("EEE, MM dd yyyy hh:mm:ss z"); + + public EventUpdater(ApplicationSettings settings) { + this.settings = settings; + } + + public JSONArray convert(JSONObject jsonObject, String version, UUID uuid, String type){ + if(type.equalsIgnoreCase(EVENT_LIST)){ + return convertEvents(jsonObject, uuid.toString(), version); + } + else { + return convertEvent(jsonObject, uuid.toString(), version); + } + } + + private JSONArray convertEvents(JSONObject jsonObject, + String uuid, String version) { + JSONArray asArrayEvents = new JSONArray(); + + JSONArray events = jsonObject.getJSONArray(EVENT_LIST); + for (int i = 0; i < events.length(); i++) { + JSONObject event = new JSONObject().put(EVENT, events.getJSONObject(i)); + event.put(VES_UNIQUE_ID, uuid + "-" + i); + event.put(VES_VERSION, version); + asArrayEvents.put(overrideEvent(event)); + } + return asArrayEvents; + } + + private JSONArray convertEvent(JSONObject jsonObject, String uuid, String version) { + jsonObject.put(VES_UNIQUE_ID, uuid); + jsonObject.put(VES_VERSION, version); + return new JSONArray().put(overrideEvent(jsonObject)); + } + + private JSONObject overrideEvent(JSONObject event) { + JSONObject jsonObject = addCurrentTimeToEvent(event); + if (settings.eventTransformingEnabled()) { + try (FileReader fr = new FileReader(EVENT_TRANSFORM)) { + log.info("parse " + EVENT_TRANSFORM + " file"); + List<Event> events = new Gson().fromJson(fr, EVENT_LIST_TYPE); + parseEventsJson(events, new ConfigProcessorAdapter(new ConfigProcessors(jsonObject))); + } catch (IOException e) { + log.error(COULD_NOT_FIND_FILE, e); + throw new ApplicationException(COULD_NOT_FIND_FILE, e); + } + } + if (jsonObject.has(VES_VERSION)) + jsonObject.remove(VES_VERSION); + log.debug("Modified event:" + jsonObject); + return jsonObject; + } + + private JSONObject addCurrentTimeToEvent(JSONObject event) { + final Date currentTime = new Date(); + JSONObject collectorTimeStamp = new JSONObject().put("collectorTimeStamp", dateFormat.format(currentTime)); + JSONObject commonEventHeaderkey = event.getJSONObject(EVENT_LITERAL).getJSONObject(COMMON_EVENT_HEADER); + commonEventHeaderkey.put("internalHeaderFields", collectorTimeStamp); + event.getJSONObject(EVENT_LITERAL).put(COMMON_EVENT_HEADER, commonEventHeaderkey); + return event; + } + + private void parseEventsJson(List<Event> eventsTransform, ConfigProcessorAdapter configProcessorAdapter) { + for (Event eventTransform : eventsTransform) { + JSONObject filterObj = new JSONObject(eventTransform.filter.toString()); + if (configProcessorAdapter.isFilterMet(filterObj)) { + callProcessorsMethod(configProcessorAdapter, eventTransform.processors); + } + } + } + + private void callProcessorsMethod(ConfigProcessorAdapter configProcessorAdapter, List<Processor> processors) { + for (Processor processor : processors) { + //TODO try to remove refection + final String functionName = processor.functionName; + final JSONObject args = new JSONObject(processor.args.toString()); + log.info(String.format("functionName==%s | args==%s", functionName, args)); + try { + configProcessorAdapter.runConfigProcessorFunctionByName(functionName, args); + } catch (ReflectiveOperationException e) { + log.error("EventProcessor Exception" + e.getMessage() + e + e.getCause()); + } + } + } +} |