/**
* Copyright (c) 2014 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.controller.frm.flow;
import java.math.BigInteger;
import org.opendaylight.controller.frm.AbstractChangeListener;
import org.opendaylight.controller.frm.FlowCookieProducer;
import org.opendaylight.controller.md.sal.binding.api.ReadOnlyTransaction;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.Uri;
import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.Table;
import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.table.Flow;
import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.service.rev130819.AddFlowInputBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.service.rev130819.FlowTableRef;
import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.service.rev130819.RemoveFlowInputBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.service.rev130819.UpdateFlowInputBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.service.rev130819.flow.update.OriginalFlowBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.service.rev130819.flow.update.UpdatedFlowBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.FlowCookie;
import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.FlowRef;
import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeRef;
import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node;
import org.opendaylight.yangtools.yang.binding.DataObject;
import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.google.common.base.Preconditions;
/**
* Flow Change Listener
* add, update and remove {@link Flow} processing from {@link org.opendaylight.controller.md.sal.common.api.data.AsyncDataChangeEvent}.
*
* @author Vaclav Demcak
*
*/
public class FlowChangeListener extends AbstractChangeListener {
private static final Logger LOG = LoggerFactory.getLogger(FlowChangeListener.class);
private final FlowProvider provider;
public FlowChangeListener (final FlowProvider provider) {
this.provider = Preconditions.checkNotNull(provider, "FlowProvider can not be null !");
}
@Override
protected void remove(final InstanceIdentifier extends DataObject> identifier,
final DataObject removeDataObj) {
final Flow flow = ((Flow) removeDataObj);
final InstanceIdentifier
tableIdent = identifier.firstIdentifierOf(Table.class);
final InstanceIdentifier nodeIdent = identifier.firstIdentifierOf(Node.class);
final RemoveFlowInputBuilder builder = new RemoveFlowInputBuilder(flow);
// use empty cookie mask in order to delete flow even with generated cookie
builder.setCookieMask(new FlowCookie(BigInteger.ZERO));
builder.setFlowRef(new FlowRef(identifier));
builder.setNode(new NodeRef(nodeIdent));
builder.setFlowTable(new FlowTableRef(tableIdent));
Uri uri = new Uri(this.getTransactionId());
builder.setTransactionUri(uri);
this.provider.getSalFlowService().removeFlow(builder.build());
LOG.debug("Transaction {} - Removed Flow has removed flow: {}", new Object[]{uri, removeDataObj});
}
@Override
protected void update(final InstanceIdentifier extends DataObject> identifier,
final DataObject original, final DataObject update) {
final Flow originalFlow = ((Flow) original);
final Flow updatedFlow = ((Flow) update);
final InstanceIdentifier nodeIdent = identifier.firstIdentifierOf(Node.class);
final UpdateFlowInputBuilder builder = new UpdateFlowInputBuilder();
builder.setNode(new NodeRef(nodeIdent));
builder.setFlowRef(new FlowRef(identifier));
Uri uri = new Uri(this.getTransactionId());
builder.setTransactionUri(uri);
builder.setUpdatedFlow((new UpdatedFlowBuilder(updatedFlow)).build());
builder.setOriginalFlow((new OriginalFlowBuilder(originalFlow)).build());
this.provider.getSalFlowService().updateFlow(builder.build());
LOG.debug("Transaction {} - Update Flow has updated flow {} with {}", new Object[]{uri, original, update});
}
@Override
protected void add(final InstanceIdentifier extends DataObject> identifier,
final DataObject addDataObj) {
final Flow flow = ((Flow) addDataObj);
final InstanceIdentifier tableIdent = identifier.firstIdentifierOf(Table.class);
final NodeRef nodeRef = new NodeRef(identifier.firstIdentifierOf(Node.class));
final FlowCookie flowCookie = new FlowCookie(FlowCookieProducer.INSTANCE.getNewCookie(tableIdent));
final AddFlowInputBuilder builder = new AddFlowInputBuilder(flow);
builder.setNode(nodeRef);
builder.setFlowRef(new FlowRef(identifier));
builder.setFlowTable(new FlowTableRef(tableIdent));
builder.setCookie( flowCookie );
Uri uri = new Uri(this.getTransactionId());
builder.setTransactionUri(uri);
this.provider.getSalFlowService().addFlow(builder.build());
LOG.debug("Transaction {} - Add Flow has added flow: {}", new Object[]{uri, addDataObj});
}
@Override
protected boolean preconditionForChange(final InstanceIdentifier extends DataObject> identifier,
final DataObject dataObj, final DataObject update) {
final ReadOnlyTransaction trans = this.provider.getDataService().newReadOnlyTransaction();
return update != null
? (dataObj instanceof Flow && update instanceof Flow && isNodeAvailable(identifier, trans))
: (dataObj instanceof Flow && isNodeAvailable(identifier, trans));
}
}