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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.onap.direct.notification;
import com.nokia.cbam.lcm.v32.model.VnfInfo;
import java.util.ArrayList;
import java.util.NoSuchElementException;
import java.util.Optional;
import org.onap.aai.model.GenericVnf;
import org.onap.aai.model.Relationship;
import org.onap.vfc.nfvo.driver.vnfm.svnfm.nokia.onap.direct.AAIRestApiProvider;
import org.onap.vfc.nfvo.driver.vnfm.svnfm.nokia.vnfm.CbamRestApiProvider;
import org.onap.vfc.nfvo.driver.vnfm.svnfm.nokia.vnfm.CbamRestApiProviderForSo;
import org.slf4j.Logger;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import static org.onap.vfc.nfvo.driver.vnfm.svnfm.nokia.onap.core.SelfRegistrationManager.SERVICE_NAME;
import static org.onap.vfc.nfvo.driver.vnfm.svnfm.nokia.util.CbamUtils.buildFatalFailure;
import static org.onap.vfc.nfvo.driver.vnfm.svnfm.nokia.util.SystemFunctions.systemFunctions;
/**
* Responsible for managing the {@link GenericVnf} in AAI
*/
@Component
public class GenericVnfManager extends AbstractManager {
private static final long MAX_MS_TO_WAIT_FOR_VNF_TO_APPEAR = 30 * 1000L;
private static Logger logger = org.slf4j.LoggerFactory.getLogger(GenericVnfManager.class);
@Autowired
GenericVnfManager(AAIRestApiProvider aaiRestApiProvider, CbamRestApiProviderForSo cbamRestApiProvider) {
super(aaiRestApiProvider, cbamRestApiProvider);
}
static Relationship linkTo(String vnfId) {
Relationship relationship = new Relationship();
relationship.setRelatedTo("generic-vnf");
relationship.setRelationshipData(new ArrayList<>());
relationship.getRelationshipData().add(buildRelationshipData("generic-vnf.vnf-id", vnfId));
return relationship;
}
private static Relationship linkToNs(String nsId) {
Relationship relationship = new Relationship();
relationship.setRelatedTo("service-instance");
relationship.setRelationshipData(new ArrayList<>());
relationship.getRelationshipData().add(buildRelationshipData("service-instance.service-instance-id", nsId));
return relationship;
}
@Override
protected Logger getLogger() {
return logger;
}
public void createOrUpdate(String vnfId, boolean inMaintenance, String vnfmId, Optional<String> nsId) {
try {
GenericVnf vnf = waitForVnfToAppearInAai(vnfId);
updateFields(vnf, vnfId, inMaintenance, vnfmId, nsId);
} catch (NoSuchElementException e) {
try {
logger.warn("The VNF with " + vnfId + " identifier did not appear in time", e);
updateFields(new GenericVnf(), vnfId, inMaintenance, vnfmId, nsId);
} catch (Exception e2) {
logger.warn("The VNF with " + vnfId + " identifier has been created since after the maximal wait for VNF to appear timeout", e2);
//the VNF might have been created since the last poll
updateFields(getExistingVnf(vnfId), vnfId, inMaintenance, vnfmId, nsId);
}
}
}
private void updateFields(GenericVnf vnf, String vnfId, boolean inMaintenance, String vnfmId, Optional<String> nsId) {
try {
VnfInfo vnfInfo = cbamRestApiProvider.getCbamLcmApi(vnfmId).vnfsVnfInstanceIdGet(vnfId, CbamRestApiProvider.NOKIA_LCM_API_VERSION).blockingFirst();
vnf.setVnfName(vnfInfo.getName());
} catch (RuntimeException e) {
throw buildFatalFailure(logger, "Unable to query VNF with " + vnfId + " identifier from CBAM", e);
}
vnf.setVnfId(vnfId);
vnf.setInMaint(inMaintenance);
vnf.setNfType(SERVICE_NAME);
//FIXME whould be good to know if this parameter is relevant or not? (mandatory)
vnf.setVnfType("NokiaVNF");
vnf.setIsClosedLoopDisabled(inMaintenance);
if (vnf.getRelationshipList() == null) {
vnf.setRelationshipList(new ArrayList<>());
}
if (nsId.isPresent()) {
addSingletonRelation(vnf.getRelationshipList(), linkToNs(nsId.get()));
} else {
logger.warn("Not linking VNF with {} identifier to any NS", vnfId);
}
aaiRestApiProvider.getNetworkApi().createOrUpdateNetworkGenericVnfsGenericVnf(vnf.getVnfId(), vnf).blockingFirst();
}
private GenericVnf waitForVnfToAppearInAai(String vnfId) {
long timeoutInMs = systemFunctions().currentTimeMillis() + MAX_MS_TO_WAIT_FOR_VNF_TO_APPEAR;
while (timeoutInMs - systemFunctions().currentTimeMillis() > 0) {
try {
return getExistingVnf(vnfId);
} catch (NoSuchElementException e) {
logger.debug("Unable to get VNF with " + vnfId + " identifier", e);
}
systemFunctions().sleep(3 * 1000L);
}
throw new NoSuchElementException();
}
private GenericVnf getExistingVnf(String vnfId) {
return aaiRestApiProvider.getNetworkApi().getNetworkGenericVnfsGenericVnf(vnfId, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null).blockingFirst();
}
}
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