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/*
* Copyright 2016-2017, Nokia Corporation
*
* 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.
*/
package org.onap.vfc.nfvo.driver.vnfm.svnfm.nokia;
import com.google.common.collect.Sets;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutorService;
import org.onap.vfc.nfvo.driver.vnfm.svnfm.nokia.onap.core.SelfRegistrationManagerForSo;
import org.onap.vfc.nfvo.driver.vnfm.svnfm.nokia.onap.core.SelfRegistrationManagerForVfc;
import org.onap.vfc.nfvo.driver.vnfm.svnfm.nokia.vnfm.JobManagerForSo;
import org.onap.vfc.nfvo.driver.vnfm.svnfm.nokia.vnfm.JobManagerForVfc;
import org.slf4j.Logger;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.context.event.ApplicationReadyEvent;
import org.springframework.context.ApplicationListener;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.context.annotation.Profile;
import org.springframework.context.event.ContextClosedEvent;
import org.springframework.stereotype.Component;
import static java.util.concurrent.Executors.newCachedThreadPool;
import static com.google.common.collect.Sets.newHashSet;
import static org.onap.vfc.nfvo.driver.vnfm.svnfm.nokia.util.SystemFunctions.systemFunctions;
import static org.slf4j.LoggerFactory.getLogger;
/**
* Represents the spring boot application
*/
@SpringBootApplication
public class NokiaSvnfmApplication {
private static Logger logger = getLogger(NokiaSvnfmApplication.class);
/**
* Entry point for the Spring boot application
*
* @param args arguments for the application (not used)
*/
public static void main(String[] args) {
systemFunctions().newSpringApplication(NokiaSvnfmApplication.class).run(args);
}
/**
* Responsible for starting the self registration process after the servlet has been started
* and is ready to answer REST request
* - has been disabled in the test because the application that provides the ONAP simulator
* has already not yet been started (can not answer REST requests)
*/
@Component
@Profile("!test")
public static class SelfRegistrationTrigger implements ApplicationListener<ApplicationReadyEvent> {
private final SelfRegistrationManagerForSo selfRegistrationManagerForSo;
private final SelfRegistrationManagerForVfc selfRegistrationManagerForVfc;
private final JobManagerForSo jobManagerForSo;
private final JobManagerForVfc jobManagerForVfc;
/**
* Runs the registration process
*/
private ExecutorService executorService = newCachedThreadPool();
@Autowired
SelfRegistrationTrigger(SelfRegistrationManagerForVfc selfRegistrationManagerForVfc, SelfRegistrationManagerForSo selfRegistrationManagerForSo, JobManagerForSo jobManagerForSo, JobManagerForVfc jobManagerForVfc) {
this.jobManagerForSo = jobManagerForSo;
this.jobManagerForVfc = jobManagerForVfc;
this.selfRegistrationManagerForVfc = selfRegistrationManagerForVfc;
this.selfRegistrationManagerForSo = selfRegistrationManagerForSo;
}
private static boolean isDirect(ConfigurableApplicationContext applicationContext) {
return newHashSet(applicationContext.getEnvironment().getActiveProfiles()).contains("direct");
}
@Override
public void onApplicationEvent(ApplicationReadyEvent contextRefreshedEvent) {
Callable<Boolean> singleRegistration = () -> {
logger.info("Self registration started");
try {
if (isDirect(contextRefreshedEvent.getApplicationContext())) {
selfRegistrationManagerForSo.register();
} else {
selfRegistrationManagerForVfc.register();
}
logger.info("Self registration finished");
} catch (RuntimeException e) {
logger.error("Self registration failed", e);
throw e;
}
return true;
};
executorService.submit(() -> {
boolean notPrepareForShutDown = !jobManagerForVfc.isPreparingForShutDown() && !jobManagerForSo.isPreparingForShutDown();
while (notPrepareForShutDown) {
try {
executorService.submit(singleRegistration).get();
//registration successful
return;
} catch (Exception e) {
logger.warn("Unable to execute self registration process", e);
}
systemFunctions().sleep(5000);
}
logger.warn("Component is preparing for shutdown giving up component start");
});
}
}
/**
* Responsible for starting the un-registration process after the service has been ramped down
* - has been disabled in test because the same application that provides the ONAP simulator
* has already been ramped down (can not answer REST requests)
*/
@Component
@Profile("!test")
public static class SelfDeRegistrationTrigger implements ApplicationListener<ContextClosedEvent> {
private final JobManagerForSo jobManagerForSo;
private final JobManagerForVfc jobManagerForVfc;
private final SelfRegistrationManagerForVfc selfRegistrationManagerForVfc;
private final SelfRegistrationManagerForSo selfRegistrationManagerForSo;
@Autowired
SelfDeRegistrationTrigger(SelfRegistrationManagerForVfc selfRegistrationManager, SelfRegistrationManagerForSo selfRegistrationManagerForSo, JobManagerForSo jobManager, JobManagerForVfc jobManagerForVfc) {
this.jobManagerForSo = jobManager;
this.jobManagerForVfc = jobManagerForVfc;
this.selfRegistrationManagerForVfc = selfRegistrationManager;
this.selfRegistrationManagerForSo = selfRegistrationManagerForSo;
}
@Override
public void onApplicationEvent(ContextClosedEvent contextClosedEvent) {
logger.info("Self de-registration started");
try {
jobManagerForVfc.prepareForShutdown();
jobManagerForSo.prepareForShutdown();
if (Sets.newHashSet(contextClosedEvent.getApplicationContext().getEnvironment().getActiveProfiles()).contains("direct")) {
selfRegistrationManagerForSo.deRegister();
} else {
selfRegistrationManagerForVfc.deRegister();
}
} catch (RuntimeException e) {
logger.error("Self de-registration failed", e);
throw e;
}
logger.info("Self de-registration finished");
}
}
}
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