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 {
72 private static final Logger logger = LoggerFactory.getLogger(AppConfig.class);
74 private ConsumerConfiguration dmaapConsumerConfiguration;
75 private Map<String, PublisherConfiguration> publishingConfigurations;
76 private FtpesConfig ftpesConfiguration;
77 private SftpConfig sftpConfiguration;
78 @Value("#{systemEnvironment}")
79 Properties systemEnvironment;
80 private Disposable refreshConfigTask = null;
83 private String filepath;
85 public synchronized void setFilepath(String filepath) {
86 this.filepath = filepath;
90 * Reads the cloud configuration.
92 public void initialize() {
94 Map<String, String> context = MappedDiagnosticContext.initializeTraceContext();
96 loadConfigurationFromFile();
98 refreshConfigTask = createRefreshTask(context) //
99 .subscribe(e -> logger.info("Refreshed configuration data"),
100 throwable -> logger.error("Configuration refresh terminated due to exception", throwable),
101 () -> logger.error("Configuration refresh terminated"));
104 Flux<AppConfig> createRefreshTask(Map<String, String> context) {
105 return getEnvironment(systemEnvironment, context) //
106 .flatMap(this::createCbsClient) //
107 .flatMapMany(this::periodicConfigurationUpdates) //
108 .map(this::parseCloudConfig) //
109 .onErrorResume(this::onErrorResume);
112 private Flux<JsonObject> periodicConfigurationUpdates(CbsClient cbsClient) {
113 final Duration initialDelay = Duration.ZERO;
114 final Duration refreshPeriod = Duration.ofMinutes(1);
115 final CbsRequest getConfigRequest = CbsRequests.getAll(RequestDiagnosticContext.create());
116 return cbsClient.updates(getConfigRequest, initialDelay, refreshPeriod);
120 * Stops the refreshing of the configuration.
123 if (refreshConfigTask != null) {
124 refreshConfigTask.dispose();
125 refreshConfigTask = null;
129 public synchronized ConsumerConfiguration getDmaapConsumerConfiguration() {
130 return dmaapConsumerConfiguration;
134 * Checks if there is a configuration for the given feed.
136 * @param changeIdentifier the change identifier the feed is configured to belong to.
137 * @return true if a feed is configured for the given change identifier, false if not.
139 public synchronized boolean isFeedConfigured(String changeIdentifier) {
140 return publishingConfigurations.containsKey(changeIdentifier);
144 * Gets the feed configuration for the given change identifier.
146 * @param changeIdentifier the change identifier the feed is configured to belong to.
147 * @return the <code>PublisherConfiguration</code> for the feed belonging to the given change identifier.
148 * @throws DatafileTaskException if no configuration has been loaded or the configuration is missing for the given
151 public synchronized PublisherConfiguration getPublisherConfiguration(String changeIdentifier)
152 throws DatafileTaskException {
154 if (publishingConfigurations == null) {
155 throw new DatafileTaskException("No PublishingConfiguration loaded, changeIdentifier: " + changeIdentifier);
157 PublisherConfiguration cfg = publishingConfigurations.get(changeIdentifier);
159 throw new DatafileTaskException(
160 "Cannot find getPublishingConfiguration for changeIdentifier: " + changeIdentifier);
165 public synchronized FtpesConfig getFtpesConfiguration() {
166 return ftpesConfiguration;
169 public synchronized SftpConfig getSftpConfiguration() {
170 return sftpConfiguration;
173 private <R> Mono<R> onErrorResume(Throwable trowable) {
174 logger.error("Could not refresh application configuration {}", trowable.toString());
178 Mono<EnvProperties> getEnvironment(Properties systemEnvironment, Map<String, String> context) {
179 return EnvironmentProcessor.readEnvironmentVariables(systemEnvironment, context);
182 Mono<CbsClient> createCbsClient(EnvProperties env) {
183 return CbsClientFactory.createCbsClient(env);
186 private AppConfig parseCloudConfig(JsonObject configurationObject) {
188 CloudConfigParser parser = new CloudConfigParser(configurationObject, systemEnvironment);
189 setConfiguration(parser.getDmaapConsumerConfig(), parser.getDmaapPublisherConfigurations(),
190 parser.getFtpesConfig(), parser.getSftpConfig());
192 } catch (DatafileTaskException e) {
193 logger.error("Could not parse configuration {}", e.toString(), e);
198 private void logConfig() {
199 logger.debug("Read and parsed sFTP configuration: [{}]", sftpConfiguration);
200 logger.debug("Read and parsed FTPes configuration: [{}]", ftpesConfiguration);
201 logger.debug("Read and parsed DMaaP configuration: [{}]", dmaapConsumerConfiguration);
202 logger.debug("Read and parsed Publish configuration: [{}]", publishingConfigurations);
205 void loadConfigurationFromFile() {
206 GsonBuilder gsonBuilder = new GsonBuilder();
207 ServiceLoader.load(TypeAdapterFactory.class).forEach(gsonBuilder::registerTypeAdapterFactory);
209 try (InputStream inputStream = createInputStream(filepath)) {
210 JsonParser parser = new JsonParser();
211 JsonObject rootObject = getJsonElement(parser, inputStream).getAsJsonObject();
212 if (rootObject == null) {
213 throw new JsonSyntaxException("Root is not a json object");
215 parseCloudConfig(rootObject);
216 logger.info("Local configuration file loaded: {}", filepath);
217 } catch (JsonSyntaxException | IOException e) {
218 logger.trace("Local configuration file not loaded: {}", filepath, e);
222 private synchronized void setConfiguration(@NotNull ConsumerConfiguration consumerConfiguration,
223 @NotNull Map<String, PublisherConfiguration> publisherConfiguration, @NotNull FtpesConfig ftpesConfig,
224 @NotNull SftpConfig sftpConfig) {
225 this.dmaapConsumerConfiguration = consumerConfiguration;
226 this.publishingConfigurations = publisherConfiguration;
227 this.ftpesConfiguration = ftpesConfig;
228 this.sftpConfiguration = sftpConfig;
231 JsonElement getJsonElement(JsonParser parser, InputStream inputStream) {
232 return parser.parse(new InputStreamReader(inputStream));
235 InputStream createInputStream(@NotNull String filepath) throws IOException {
236 return new BufferedInputStream(new FileInputStream(filepath));