2 * ============LICENSE_START======================================================================
3 * Copyright (C) 2018 NOKIA Intellectual Property, 2018-2019 Nordix Foundation. All rights reserved.
4 * ===============================================================================================
5 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
6 * in compliance with the License. You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software distributed under the License
11 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
12 * or implied. See the License for the specific language governing permissions and limitations under
14 * ============LICENSE_END========================================================================
17 package org.onap.dcaegen2.collectors.datafile.configuration;
19 import com.google.gson.GsonBuilder;
20 import com.google.gson.JsonElement;
21 import com.google.gson.JsonObject;
22 import com.google.gson.JsonParser;
23 import com.google.gson.JsonSyntaxException;
24 import com.google.gson.TypeAdapterFactory;
26 import java.io.BufferedInputStream;
27 import java.io.FileInputStream;
28 import java.io.IOException;
29 import java.io.InputStream;
30 import java.io.InputStreamReader;
31 import java.time.Duration;
33 import java.util.Properties;
34 import java.util.ServiceLoader;
36 import javax.validation.constraints.NotEmpty;
37 import javax.validation.constraints.NotNull;
39 import org.onap.dcaegen2.collectors.datafile.exceptions.DatafileTaskException;
40 import org.onap.dcaegen2.collectors.datafile.model.logging.MappedDiagnosticContext;
41 import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.api.CbsClient;
42 import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.api.CbsClientFactory;
43 import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.api.CbsRequests;
44 import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.CbsRequest;
45 import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.EnvProperties;
46 import org.onap.dcaegen2.services.sdk.rest.services.model.logging.RequestDiagnosticContext;
47 import org.slf4j.Logger;
48 import org.slf4j.LoggerFactory;
49 import org.springframework.beans.factory.annotation.Value;
50 import org.springframework.boot.context.properties.ConfigurationProperties;
51 import org.springframework.boot.context.properties.EnableConfigurationProperties;
52 import org.springframework.context.annotation.ComponentScan;
53 import org.springframework.stereotype.Component;
55 import reactor.core.Disposable;
56 import reactor.core.publisher.Flux;
57 import reactor.core.publisher.Mono;
60 * Holds all configuration for the DFC.
62 * @author <a href="mailto:przemyslaw.wasala@nokia.com">Przemysław Wąsala</a> on 3/23/18
63 * @author <a href="mailto:henrik.b.andersson@est.tech">Henrik Andersson</a>
67 @ComponentScan("org.onap.dcaegen2.services.sdk.rest.services.cbs.client.providers")
68 @EnableConfigurationProperties
69 @ConfigurationProperties("app")
70 public class AppConfig {
71 private static final Logger logger = LoggerFactory.getLogger(AppConfig.class);
73 private ConsumerConfiguration dmaapConsumerConfiguration;
74 private Map<String, PublisherConfiguration> publishingConfigurations;
75 private FtpesConfig ftpesConfiguration;
76 @Value("#{systemEnvironment}")
77 Properties systemEnvironment;
78 private Disposable refreshConfigTask = null;
81 private String filepath;
83 public synchronized void setFilepath(String filepath) {
84 this.filepath = filepath;
88 * Reads the cloud configuration.
90 public void initialize() {
92 Map<String, String> context = MappedDiagnosticContext.initializeTraceContext();
93 loadConfigurationFromFile();
95 refreshConfigTask = createRefreshTask(context) //
96 .subscribe(e -> logger.info("Refreshed configuration data"),
97 throwable -> logger.error("Configuration refresh terminated due to exception", throwable),
98 () -> logger.error("Configuration refresh terminated"));
101 Flux<AppConfig> createRefreshTask(Map<String, String> context) {
102 return getEnvironment(systemEnvironment, context).flatMap(this::createCbsClient)
103 .flatMapMany(this::periodicConfigurationUpdates).map(this::parseCloudConfig)
104 .onErrorResume(this::onErrorResume);
107 private Flux<JsonObject> periodicConfigurationUpdates(CbsClient cbsClient) {
108 final Duration initialDelay = Duration.ZERO;
109 final Duration refreshPeriod = Duration.ofMinutes(1);
110 final CbsRequest getConfigRequest = CbsRequests.getAll(RequestDiagnosticContext.create());
111 return cbsClient.updates(getConfigRequest, initialDelay, refreshPeriod);
115 * Stops the refreshing of the configuration.
118 if (refreshConfigTask != null) {
119 refreshConfigTask.dispose();
120 refreshConfigTask = null;
124 public synchronized ConsumerConfiguration getDmaapConsumerConfiguration() {
125 return dmaapConsumerConfiguration;
129 * Checks if there is a configuration for the given feed.
131 * @param changeIdentifier the change identifier the feed is configured to belong to.
133 * @return true if a feed is configured for the given change identifier, false if not.
135 public synchronized boolean isFeedConfigured(String changeIdentifier) {
136 return publishingConfigurations.containsKey(changeIdentifier);
140 * Gets the feed configuration for the given change identifier.
142 * @param changeIdentifier the change identifier the feed is configured to belong to.
143 * @return the <code>PublisherConfiguration</code> for the feed belonging to the given change identifier.
145 * @throws DatafileTaskException if no configuration has been loaded or the configuration is missing for the given
148 public synchronized PublisherConfiguration getPublisherConfiguration(String changeIdentifier)
149 throws DatafileTaskException {
151 if (publishingConfigurations == null) {
152 throw new DatafileTaskException("No PublishingConfiguration loaded, changeIdentifier: " + changeIdentifier);
154 PublisherConfiguration cfg = publishingConfigurations.get(changeIdentifier);
156 throw new DatafileTaskException(
157 "Cannot find getPublishingConfiguration for changeIdentifier: " + changeIdentifier);
162 public synchronized FtpesConfig getFtpesConfiguration() {
163 return ftpesConfiguration;
166 private <R> Mono<R> onErrorResume(Throwable trowable) {
167 logger.error("Could not refresh application configuration {}", trowable.toString());
171 Mono<EnvProperties> getEnvironment(Properties systemEnvironment, Map<String, String> context) {
172 return EnvironmentProcessor.readEnvironmentVariables(systemEnvironment, context);
175 Mono<CbsClient> createCbsClient(EnvProperties env) {
176 return CbsClientFactory.createCbsClient(env);
180 * Parse configuration.
182 * @param jsonObject the DFC service's configuration
183 * @return this which is updated if successful
185 private AppConfig parseCloudConfig(JsonObject jsonObject) {
187 CloudConfigParser parser = new CloudConfigParser(jsonObject);
188 setConfiguration(parser.getDmaapConsumerConfig(), parser.getDmaapPublisherConfigurations(),
189 parser.getFtpesConfig());
191 } catch (DatafileTaskException e) {
192 logger.error("Could not parse configuration {}", e.toString(), e);
198 * Reads the configuration from file.
200 void loadConfigurationFromFile() {
201 GsonBuilder gsonBuilder = new GsonBuilder();
202 ServiceLoader.load(TypeAdapterFactory.class).forEach(gsonBuilder::registerTypeAdapterFactory);
204 try (InputStream inputStream = createInputStream(filepath)) {
205 JsonParser parser = new JsonParser();
206 JsonObject rootObject = getJsonElement(parser, inputStream).getAsJsonObject();
207 if (rootObject == null) {
208 throw new JsonSyntaxException("Root is not a json object");
210 parseCloudConfig(rootObject);
211 } catch (JsonSyntaxException | IOException e) {
212 logger.warn("Local configuration file not loaded: {}", filepath, e);
216 private synchronized void setConfiguration(ConsumerConfiguration consumerConfiguration,
217 Map<String, PublisherConfiguration> publisherConfiguration, FtpesConfig ftpesConfig) {
218 if (consumerConfiguration == null || publisherConfiguration == null || ftpesConfig == null) {
220 "Problem with configuration consumerConfiguration: {}, publisherConfiguration: {}, ftpesConfig: {}",
221 consumerConfiguration, publisherConfiguration, ftpesConfig);
223 this.dmaapConsumerConfiguration = consumerConfiguration;
224 this.publishingConfigurations = publisherConfiguration;
225 this.ftpesConfiguration = ftpesConfig;
229 JsonElement getJsonElement(JsonParser parser, InputStream inputStream) {
230 return parser.parse(new InputStreamReader(inputStream));
233 InputStream createInputStream(@NotNull String filepath) throws IOException {
234 return new BufferedInputStream(new FileInputStream(filepath));