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/*-
* ============LICENSE_START=======================================================
* PROJECT
* ================================================================================
* Copyright (C) 2017-2018 AT&T Intellectual Property. All rights reserved.
* Copyright (C) 2020-2021 Nokia. All rights reserved.
* ================================================================================
* 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;
import io.vavr.collection.Map;
import org.onap.dcae.common.EventSender;
import org.onap.dcae.common.validator.StndDefinedValidatorResolver;
import org.onap.dcae.common.publishing.DMaaPConfigurationParser;
import org.onap.dcae.common.publishing.DMaaPEventPublisher;
import org.onap.dcae.common.publishing.PublisherConfig;
import org.onap.dcae.configuration.ConfigurationHandler;
import org.onap.dcae.configuration.ConfigUpdater;
import org.onap.dcae.configuration.ConfigUpdaterFactory;
import org.onap.dcae.configuration.cbs.CbsClientConfigurationProvider;
import org.onap.dcaegen2.services.sdk.services.external.schema.manager.service.StndDefinedValidator;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.gson.GsonAutoConfiguration;
import org.springframework.boot.autoconfigure.security.servlet.SecurityAutoConfiguration;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Lazy;
import java.nio.file.Paths;
import java.time.Duration;
import java.util.concurrent.ScheduledThreadPoolExecutor;
import java.util.concurrent.locks.ReentrantLock;
@SpringBootApplication(exclude = {GsonAutoConfiguration.class, SecurityAutoConfiguration.class})
public class VesApplication {
private static final int DEFAULT_CONFIGURATION_FETCH_PERIOD = 5;
private static final Logger incomingRequestsLogger = LoggerFactory.getLogger("org.onap.dcae.common.input");
private static final Logger errorLog = LoggerFactory.getLogger("org.onap.dcae.common.error");
private static ApplicationSettings applicationSettings;
private static ConfigurableApplicationContext context;
private static ConfigUpdater configUpdater;
private static DMaaPEventPublisher eventPublisher;
private static ApplicationConfigurationListener applicationConfigurationListener;
private static ReentrantLock applicationLock = new ReentrantLock();
public static void main(String[] args) {
applicationLock.lock();
try {
startApplication(args);
startListeningForApplicationConfiguration();
} finally {
applicationLock.unlock();
}
}
private static void startApplication(String[] args) {
SpringApplication app = new SpringApplication(VesApplication.class);
applicationSettings = new ApplicationSettings(args, CLIUtils::processCmdLine);
configUpdater = ConfigUpdaterFactory.create(
applicationSettings.configurationFileLocation(),
Paths.get(applicationSettings.dMaaPConfigurationFileLocation()));
eventPublisher = new DMaaPEventPublisher(getDmaapConfig());
app.setAddCommandLineProperties(true);
context = app.run();
}
public static void restartApplication() {
Thread thread = new Thread(() -> {
try {
applicationLock.lock();
reloadApplicationResources();
reloadSpringContext();
} finally {
applicationLock.unlock();
}
});
thread.setDaemon(false);
thread.start();
}
private static void reloadApplicationResources() {
applicationSettings.reload();
eventPublisher.reload(getDmaapConfig());
configUpdater.setPaths(applicationSettings.configurationFileLocation(),
Paths.get(applicationSettings.dMaaPConfigurationFileLocation()));
applicationConfigurationListener.reload(Duration.ofMinutes(applicationSettings.configurationUpdateFrequency()));
}
private static void reloadSpringContext() {
context.close();
context = SpringApplication.run(VesApplication.class);
}
private static void startListeningForApplicationConfiguration() {
ConfigurationHandler cbsHandler = new ConfigurationHandler(new CbsClientConfigurationProvider(), configUpdater);
ApplicationConfigurationListener applicationConfigProvider = new ApplicationConfigurationListener(Duration.ofMinutes(DEFAULT_CONFIGURATION_FETCH_PERIOD), cbsHandler);
ScheduledThreadPoolExecutor scheduledThreadPoolExecutor = new ScheduledThreadPoolExecutor(1);
scheduledThreadPoolExecutor.execute(applicationConfigProvider);
applicationConfigurationListener = applicationConfigProvider;
}
private static Map<String, PublisherConfig> getDmaapConfig() {
return DMaaPConfigurationParser
.parseToDomainMapping(Paths.get(applicationSettings.dMaaPConfigurationFileLocation())).get();
}
@Bean
@Lazy
public ApplicationSettings applicationSettings() {
return applicationSettings;
}
@Bean
@Qualifier("incomingRequestsLogger")
public Logger incomingRequestsLogger() {
return incomingRequestsLogger;
}
@Bean
@Qualifier("errorLog")
public Logger errorLogger() {
return errorLog;
}
@Bean
@Qualifier("eventSender")
public EventSender eventSender() {
return new EventSender(eventPublisher, applicationSettings.getDmaapStreamIds());
}
@Bean
public StndDefinedValidator getStndDefinedValidator(StndDefinedValidatorResolver resolver) {
return resolver.resolve();
}
}
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