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/*
* ============LICENSE_START=======================================================
* ONAP : ccsdk feature sdnr wt
* ================================================================================
* Copyright (C) 2019 highstreet technologies GmbH Intellectual Property.
* 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.ccsdk.features.sdnr.wt.devicemanager.housekeeping;
import com.google.common.util.concurrent.FluentFuture;
import com.google.common.util.concurrent.Futures;
import com.google.common.util.concurrent.ListenableFuture;
import java.util.List;
import java.util.NoSuchElementException;
import java.util.Optional;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;
import org.eclipse.jdt.annotation.NonNull;
import org.onap.ccsdk.features.sdnr.wt.common.configuration.ConfigurationFileRepresentation;
import org.onap.ccsdk.features.sdnr.wt.common.configuration.filechange.IConfigChangedListener;
import org.onap.ccsdk.features.sdnr.wt.dataprovider.model.DataProvider;
import org.onap.ccsdk.features.sdnr.wt.dataprovider.model.NetconfTimeStamp;
import org.onap.ccsdk.features.sdnr.wt.dataprovider.model.types.NetconfTimeStampImpl;
import org.onap.ccsdk.features.sdnr.wt.devicemanager.types.InternalConnectionStatus;
import org.opendaylight.mdsal.binding.api.DataBroker;
import org.opendaylight.mdsal.binding.api.ReadTransaction;
import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
import org.opendaylight.mdsal.singleton.common.api.ClusterSingletonService;
import org.opendaylight.mdsal.singleton.common.api.ClusterSingletonServiceProvider;
import org.opendaylight.mdsal.singleton.common.api.ClusterSingletonServiceRegistration;
import org.opendaylight.mdsal.singleton.common.api.ServiceGroupIdentifier;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.DateAndTime;
import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev221225.NetconfNode;
import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev221225.network.topology.topology.topology.types.TopologyNetconf;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.data.provider.rev201110.ConnectionLogStatus;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.data.provider.rev201110.EventlogBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.data.provider.rev201110.NetworkElementConnectionBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.data.provider.rev201110.NetworkElementConnectionEntity;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.data.provider.rev201110.SourceType;
import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NetworkTopology;
import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NodeId;
import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.TopologyId;
import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.Topology;
import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.TopologyKey;
import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.NodeKey;
import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class ConnectionStatusHousekeepingService
implements ClusterSingletonService, AutoCloseable, IConfigChangedListener {
private static final Logger LOG = LoggerFactory.getLogger(ConnectionStatusHousekeepingService.class);
private static final long INTERVAL_SECONDS = 30;
private static final InstanceIdentifier<Topology> NETCONF_TOPO_IID =
InstanceIdentifier.create(NetworkTopology.class).child(Topology.class,
new TopologyKey(new TopologyId(TopologyNetconf.QNAME.getLocalName())));
private static final ServiceGroupIdentifier IDENT =
ServiceGroupIdentifier.create("ConnectionStatusHousekeepingService");
private final ScheduledExecutorService scheduler = Executors.newScheduledThreadPool(3);
private final DataBroker dataBroker;
private final DataProvider dataProvider;
private final Runnable runner = () -> doClean();
private final HouseKeepingConfig config;
private final ConfigurationFileRepresentation cfg;
private final ClusterSingletonServiceRegistration cssRegistration2;
private boolean isMaster;
private Future<?> taskReference;
private int eventNumber;
private volatile boolean enabled;
public ConnectionStatusHousekeepingService(ConfigurationFileRepresentation cfg,
ClusterSingletonServiceProvider clusterSingletonServiceProvider, DataBroker dataBroker,
DataProvider dataProvider) {
this.config = new HouseKeepingConfig(cfg);
this.cfg = cfg;
cfg.registerConfigChangedListener(this);
this.dataBroker = dataBroker;
this.dataProvider = dataProvider;
this.eventNumber = 0;
setEnabled(this.config.isEnabled());
this.start();
this.cssRegistration2 = clusterSingletonServiceProvider.registerClusterSingletonService(this);
}
private void setEnabled(boolean pEnabled) {
LOG.info("ConnectionStatusHousekeepingService status change from {} to {}", enabled, pEnabled);
this.enabled = pEnabled;
}
private boolean isEnabled() {
return this.enabled;
}
private void start() {
if (taskReference != null) {
taskReference.cancel(false);
}
if (!isMaster) {
LOG.info("Do not start. not the master node");
} else {
LOG.info("Starting scheduler with interval {}", INTERVAL_SECONDS);
this.taskReference =
this.scheduler.scheduleAtFixedRate(runner, INTERVAL_SECONDS, INTERVAL_SECONDS, TimeUnit.SECONDS);
}
}
private void doClean() {
if (!isEnabled()) {
LOG.debug("service is disabled by config");
return;
}
LOG.debug("start housekeeping");
// get all devices from networkelement-connection index
try {
List<NetworkElementConnectionEntity> list = this.dataProvider.getNetworkElementConnections();
ConnectionLogStatus dbStatus;
ConnectionLogStatus mdsalStatus;
String nodeId;
if (list == null || list.size() <= 0) {
LOG.trace("no items in list.");
} else {
NetconfTimeStamp ts = NetconfTimeStampImpl.getConverter();
//check all db entries and sync connection status
for (NetworkElementConnectionEntity item : list) {
// compare with MD-SAL
nodeId = item.getNodeId();
LOG.trace("check status of {}", nodeId);
dbStatus = item.getStatus();
mdsalStatus = this.getMDSalConnectionStatus(nodeId);
if (mdsalStatus == null) {
LOG.trace("unable to get connection status. jump over");
continue;
}
// if different then update db
if (dbStatus != mdsalStatus) {
LOG.trace("status is inconsistent db={}, mdsal={}. updating db", dbStatus, mdsalStatus);
this.dataProvider.writeEventLog(new EventlogBuilder().setNodeId("SDN-Controller")
.setTimestamp(new DateAndTime(ts.getTimeStamp())).setObjectId(item.getNodeId())
.setAttributeName("status").setNewValue(String.valueOf(mdsalStatus))
.setCounter(popEvntNumber()).setSourceType(SourceType.Controller).build());
if ((item.requireIsRequired() == null || item.requireIsRequired() == false)
&& mdsalStatus == ConnectionLogStatus.Disconnected) {
LOG.info("removing entry for node {} ({}) from database due missing MD-SAL entry",
item.getNodeId(), mdsalStatus);
this.dataProvider.removeNetworkConnection(nodeId);
} else {
NetworkElementConnectionBuilder ne =
new NetworkElementConnectionBuilder().setStatus(mdsalStatus);
this.dataProvider.updateNetworkConnection22(ne.build(), nodeId);
}
} else {
LOG.trace("no difference");
}
}
}
} catch (Exception e) {
LOG.warn("problem executing housekeeping task: {}", e);
}
LOG.debug("finish housekeeping");
}
private Integer popEvntNumber() {
return eventNumber++;
}
private ConnectionLogStatus getMDSalConnectionStatus(String nodeId) {
@NonNull
InstanceIdentifier<Node> instanceIdentifier =
NETCONF_TOPO_IID.child(Node.class, new NodeKey(new NodeId(nodeId)));
//Implicit close of try with resource is not handled correctly by underlying opendaylight NETCONF service
ReadTransaction trans = this.dataBroker.newReadOnlyTransaction();
try {
FluentFuture<Optional<Node>> optionalNode =
trans.read(LogicalDatastoreType.OPERATIONAL, instanceIdentifier);
Optional<Node> nodeOpt = optionalNode.get();
if (nodeOpt.isEmpty()) {
LOG.warn("unable to get node info");
return null;
}
Node node = nodeOpt.get();
LOG.debug("node is {}", node);
NetconfNode nNode = node.augmentation(NetconfNode.class);
LOG.debug("nnode is {}", nNode);
if (nNode != null) {
return InternalConnectionStatus.statusFromNodeStatus(nNode.getConnectionStatus());
}
} catch (NoSuchElementException e) {
return ConnectionLogStatus.Disconnected;
} catch (InterruptedException e) {
LOG.warn("InterruptedException unable to get node info: ", e);
Thread.currentThread().interrupt();
} catch (ExecutionException e) {// | TimeoutException e) {
LOG.warn("ExecutionException unable to get node info: ", e);
} finally {
trans.close();
}
return null;
}
@Override
public void close() throws Exception {
if (taskReference != null) {
taskReference.cancel(false);
}
if (this.cfg != null) {
this.cfg.unregisterConfigChangedListener(this);
}
this.scheduler.shutdown();
if (this.cssRegistration2 != null)
this.cssRegistration2.close();
}
@Override
public @NonNull ServiceGroupIdentifier getIdentifier() {
return IDENT;
}
@Override
public void instantiateServiceInstance() {
LOG.info("We take Leadership");
this.isMaster = true;
this.start();
}
@Override
public ListenableFuture<? extends Object> closeServiceInstance() {
LOG.info("We lost Leadership");
this.isMaster = false;
this.start();
return Futures.immediateFuture(null);
}
@Override
public void onConfigChanged() {
setEnabled(this.config.isEnabled());
}
}
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