2 * ============LICENSE_START=======================================================
3 * org.onap.dcaegen2.collectors.ves
4 * ================================================================================
5 * Copyright (C) 2017-2018 AT&T Intellectual Property. All rights reserved.
6 * Copyright (C) 2018 Nokia. All rights reserved.
7 * ================================================================================
8 * Licensed under the Apache License, Version 2.0 (the "License");
9 * you may not use this file except in compliance with the License.
10 * You may obtain a copy of the License at
12 * http://www.apache.org/licenses/LICENSE-2.0
14 * Unless required by applicable law or agreed to in writing, software
15 * distributed under the License is distributed on an "AS IS" BASIS,
16 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17 * See the License for the specific language governing permissions and
18 * limitations under the License.
19 * ============LICENSE_END=========================================================
21 package org.onap.dcae.controller;
23 import static org.onap.dcae.commonFunction.event.publishing.DMaaPConfigurationParser.parseToDomainMapping;
24 import static org.onap.dcae.controller.ConfigParsing.getDMaaPConfig;
25 import static org.onap.dcae.controller.ConfigParsing.getProperties;
26 import static org.onap.dcae.controller.EnvPropertiesReader.readEnvProps;
28 import io.vavr.Function0;
29 import io.vavr.Function1;
30 import io.vavr.collection.HashMap;
31 import io.vavr.collection.Map;
32 import io.vavr.control.Try;
33 import java.nio.file.Path;
34 import java.util.function.Consumer;
35 import org.json.JSONObject;
36 import org.onap.dcae.commonFunction.event.publishing.EventPublisher;
37 import org.onap.dcae.commonFunction.event.publishing.PublisherConfig;
38 import org.slf4j.Logger;
39 import org.slf4j.LoggerFactory;
41 public class ConfigLoader {
43 private static final String SKIP_MSG = "Skipping dynamic configuration update";
44 private static Logger log = LoggerFactory.getLogger(ConfigLoader.class);
45 private final Consumer<Map<String, PublisherConfig>> eventPublisherReconfigurer;
46 private final ConfigFilesFacade configFilesFacade;
47 private final Function1<EnvProps, Try<JSONObject>> configurationSource;
48 private final Function0<Map<String, String>> envVariablesSupplier;
50 ConfigLoader(Consumer<Map<String, PublisherConfig>> eventPublisherReconfigurer,
51 ConfigFilesFacade configFilesFacade,
52 Function1<EnvProps, Try<JSONObject>> configurationSource,
53 Function0<Map<String, String>> envVariablesSupplier) {
54 this.eventPublisherReconfigurer = eventPublisherReconfigurer;
55 this.configFilesFacade = configFilesFacade;
56 this.configurationSource = configurationSource;
57 this.envVariablesSupplier = envVariablesSupplier;
60 public static ConfigLoader create(Consumer<Map<String, PublisherConfig>> eventPublisherReconfigurer,
61 Path dMaaPConfigFile, Path propertiesConfigFile) {
62 return new ConfigLoader(eventPublisherReconfigurer,
63 new ConfigFilesFacade(dMaaPConfigFile, propertiesConfigFile),
64 ConfigSource::getAppConfig,
65 () -> HashMap.ofAll(System.getenv()));
68 public void updateConfig() {
69 log.info("Trying to dynamically update config from Config Binding Service");
70 readEnvProps(envVariablesSupplier.get())
71 .onEmpty(() -> log.warn(SKIP_MSG))
72 .forEach(props -> updateConfig(props));
75 private void updateConfig(EnvProps props) {
76 configurationSource.apply(props)
78 .onSuccess(newConf -> {
79 updateConfigurationProperties(newConf);
80 updateDMaaPProperties(newConf);
85 private void updateDMaaPProperties(JSONObject newConf) {
86 configFilesFacade.readDMaaPConfiguration()
88 .onSuccess(oldDMaaPConf -> getDMaaPConfig(newConf)
89 .onEmpty(() -> log.warn(SKIP_MSG))
90 .forEach(newDMaaPConf -> compareAndOverwriteDMaaPConfig(oldDMaaPConf, newDMaaPConf)));
94 private void updateConfigurationProperties(JSONObject newConf) {
95 configFilesFacade.readCollectorProperties()
97 .onSuccess(oldProps -> compareAndOverwritePropertiesConfig(newConf, oldProps));
100 private void compareAndOverwritePropertiesConfig(JSONObject newConf, Map<String, String> oldProps) {
101 Map<String, String> newProperties = getProperties(newConf);
102 if (!oldProps.equals(newProperties)) {
103 configFilesFacade.writeProperties(newProperties)
104 .onSuccess(__ -> log.info("New properties configuration written to file"))
105 .onFailure(logSkip());
107 log.info("Collector properties from CBS are the same as currently used ones. " + SKIP_MSG);
111 private void compareAndOverwriteDMaaPConfig(JSONObject oldDMaaPConf, JSONObject newDMaaPConf) {
112 if (!oldDMaaPConf.toString().equals(newDMaaPConf.toString())) {
113 parseToDomainMapping(newDMaaPConf)
114 .onFailure(exc -> log.error(SKIP_MSG, exc))
115 .onSuccess(eventPublisherReconfigurer)
116 .onSuccess(parsedConfig ->
117 configFilesFacade.writeDMaaPConfiguration(newDMaaPConf)
118 .onFailure(logSkip())
119 .onSuccess(__ -> log.info("New dMaaP configuration written to file")));
121 log.info("DMaaP config from CBS is the same as currently used one. " + SKIP_MSG);
125 private Consumer<Throwable> logSkip() {
126 return __ -> log.error(SKIP_MSG);