/*
* Copyright (c) 2016 Cisco Systems, Inc. and others. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0 which accompanies this distribution,
* and is available at http://www.eclipse.org/legal/epl-v10.html
*/
package org.opendaylight.groupbasedpolicy.sxp_ise_adapter.impl;
import com.google.common.util.concurrent.CheckedFuture;
import com.google.common.util.concurrent.FutureCallback;
import com.google.common.util.concurrent.Futures;
import com.google.common.util.concurrent.ListenableFuture;
import com.google.common.util.concurrent.ThreadFactoryBuilder;
import java.text.SimpleDateFormat;
import java.util.Collection;
import java.util.Date;
import java.util.Optional;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
import org.opendaylight.controller.md.sal.binding.api.DataBroker;
import org.opendaylight.controller.md.sal.binding.api.DataTreeModification;
import org.opendaylight.controller.md.sal.binding.api.WriteTransaction;
import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
import org.opendaylight.controller.md.sal.common.api.data.TransactionCommitFailedException;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Uri;
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.params.xml.ns.yang.controller.config.groupbasedpolicy.sxp.integration.sxp.ise.adapter.model.rev160630.GbpSxpIseAdapter;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.config.groupbasedpolicy.sxp.integration.sxp.ise.adapter.model.rev160630.gbp.sxp.ise.adapter.IseHarvestStatus;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.config.groupbasedpolicy.sxp.integration.sxp.ise.adapter.model.rev160630.gbp.sxp.ise.adapter.IseHarvestStatusBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.config.groupbasedpolicy.sxp.integration.sxp.ise.adapter.model.rev160630.gbp.sxp.ise.adapter.IseSourceConfig;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.config.groupbasedpolicy.sxp.integration.sxp.ise.adapter.model.rev160630.gbp.sxp.ise.adapter.ise.source.config.ConnectionConfig;
import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Purpose: listen for harvest configuration and trigger harvesting
*/
public class GbpIseConfigListenerImpl implements GbpIseConfigListener {
private static final Logger LOG = LoggerFactory.getLogger(GbpIseConfigListenerImpl.class);
private static final String DATE_AND_TIME_FORMAT = "yyyy-MM-dd'T'HH:mm:ss.SSSXXX";
private final DataBroker dataBroker;
private final GbpIseSgtHarvester gbpIseSgtHarvester;
@Nonnull private final EPPolicyTemplateProviderFacade templateProviderFacade;
private final ThreadPoolExecutor pool;
public GbpIseConfigListenerImpl(@Nonnull final DataBroker dataBroker, @Nonnull final GbpIseSgtHarvester gbpIseSgtHarvester,
@Nonnull final EPPolicyTemplateProviderFacade templateProviderFacade) {
this.dataBroker = dataBroker;
this.gbpIseSgtHarvester = gbpIseSgtHarvester;
this.templateProviderFacade = templateProviderFacade;
pool = new ThreadPoolExecutor(1, 1, 0, TimeUnit.MILLISECONDS, new LinkedBlockingQueue<>(10),
new ThreadFactoryBuilder().setNameFormat("ise-sgt-harverster-%d").build()) {
@Override
protected void afterExecute(final Runnable r, final Throwable t) {
super.afterExecute(r, t);
if (t != null) {
LOG.warn("ise harvest task failed", t);
}
}
};
}
@Override
public void onDataTreeChanged(@Nonnull final Collection<DataTreeModification<IseSourceConfig>> collection) {
for (DataTreeModification<IseSourceConfig> modification : collection) {
final IseSourceConfig iseSourceConfig = modification.getRootNode().getDataAfter();
final IseContext iseContext = new IseContext(iseSourceConfig);
templateProviderFacade.assignIseContext(iseContext);
if (iseSourceConfig != null) {
final Optional<ConnectionConfig> connectionConfig = Optional.ofNullable(iseSourceConfig.getConnectionConfig());
LOG.debug("Ise-source config assigned: {} -> {}", iseSourceConfig.getTenant(),
connectionConfig.map(ConnectionConfig::getIseRestUrl).orElse(new Uri("n/a")));
pool.submit(() -> {
final ListenableFuture<Collection<SgtInfo>> harvestResult = gbpIseSgtHarvester.harvestAll(iseContext);
Futures.addCallback(harvestResult, new FutureCallback<Collection<SgtInfo>>() {
@Override
public void onSuccess(@Nullable final Collection<SgtInfo> result) {
final Integer counter = Optional.ofNullable(result).map(Collection::size).orElse(0);
LOG.debug("ise harvest finished, outcome: {}", counter);
storeOutcome(true, counter, null);
}
@Override
public void onFailure(final Throwable t) {
LOG.debug("ise harvest failed", t);
storeOutcome(false, 0, t.getMessage());
}
});
try {
harvestResult.get(30, TimeUnit.SECONDS);
} catch (InterruptedException | ExecutionException | TimeoutException e) {
LOG.debug("failed to finish ise-sgt-harvest task properly on time", e);
}
});
} else {
LOG.debug("Ise-source config removed");
}
}
}
private CheckedFuture<Void, TransactionCommitFailedException> storeOutcome(final boolean succeeded, final int counter, final String reason) {
final WriteTransaction wTx = dataBroker.newWriteOnlyTransaction();
final InstanceIdentifier<IseHarvestStatus> harvestStatusPath = InstanceIdentifier.create(GbpSxpIseAdapter.class)
.child(IseHarvestStatus.class);
final IseHarvestStatus harvestStatus = new IseHarvestStatusBuilder()
.setReason(reason)
.setSuccess(succeeded)
.setTemplatesWritten(counter)
.setTimestamp(createDateTime(new Date()))
.build();
wTx.put(LogicalDatastoreType.OPERATIONAL, harvestStatusPath, harvestStatus, true);
return wTx.submit();
}
private static DateAndTime createDateTime(Date when) {
final SimpleDateFormat simpleDateFormat = new SimpleDateFormat(DATE_AND_TIME_FORMAT);
return new DateAndTime(simpleDateFormat.format(when));
}
@Override
public void close() throws Exception {
if (! pool.isTerminated()) {
pool.shutdown();
final boolean terminated = pool.awaitTermination(10, TimeUnit.SECONDS);
if (! terminated) {
pool.shutdownNow();
}
}
}
}