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/*
* Copyright (c) 2015 Cisco and/or its affiliates.
*
* 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 io.fd.honeycomb.v3po.impl;
import java.util.Collection;
import org.opendaylight.controller.md.sal.binding.api.DataBroker;
import org.opendaylight.controller.md.sal.binding.api.DataObjectModification;
import org.opendaylight.controller.md.sal.binding.api.DataTreeChangeListener;
import org.opendaylight.controller.md.sal.binding.api.DataTreeIdentifier;
import org.opendaylight.controller.md.sal.binding.api.DataTreeModification;
import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.Vpp;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.vpp.BridgeDomains;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.vpp.bridge.domains.BridgeDomain;
import org.opendaylight.yangtools.concepts.ListenerRegistration;
import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
import org.openvpp.vppjapi.vppApi;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class VppBridgeDomainListener implements DataTreeChangeListener<BridgeDomain>,
AutoCloseable {
private static final Logger LOG =
LoggerFactory.getLogger(VppBridgeDomainListener.class);
private ListenerRegistration<VppBridgeDomainListener> registration;
private DataBroker db;
private vppApi api;
private enum DataChangeType {
CREATE, UPDATE, DELETE
}
/**
* TODO-ADD-JAVADOC.
*/
public VppBridgeDomainListener(DataBroker db, vppApi api) {
this.db = db;
this.api = api;
InstanceIdentifier<BridgeDomain> iid = InstanceIdentifier
.create(Vpp.class)
.child(BridgeDomains.class)
.child(BridgeDomain.class);
LOG.info("VPPCFG-INFO: Register listener for VPP Bridge Domain data changes");
DataTreeIdentifier<BridgeDomain> path =
new DataTreeIdentifier<BridgeDomain>(LogicalDatastoreType.CONFIGURATION, iid);
registration = this.db.registerDataTreeChangeListener(path, this);
}
@Override
public void onDataTreeChanged(Collection<DataTreeModification<BridgeDomain>> changes) {
for (DataTreeModification<BridgeDomain> change: changes) {
InstanceIdentifier<BridgeDomain> iid = change.getRootPath().getRootIdentifier();
DataObjectModification<BridgeDomain> changeDiff = change.getRootNode();
switch (changeDiff.getModificationType()) {
case SUBTREE_MODIFIED:
case WRITE:
// create, modify or replace
createOrUpdateBridgeDomain(changeDiff);
break;
case DELETE:
deleteBridgeDomain(changeDiff);
break;
default:
LOG.info("Unsupported change type {} for {}",
changeDiff.getModificationType(), iid);
}
}
}
// handles only CREATE and UPDATE calls
private void vppSetBridgeDomain(BridgeDomain bridgeDomain, DataChangeType type,
BridgeDomain originalBridgeDomain) {
int rv = -77;
int cnt = 0;
String bdName = bridgeDomain.getName();
int bdId = api.findOrAddBridgeDomainId(bdName);
LOG.info("VPPCFG-INFO: {} <bridgeDomain>", type);
LOG.info("VPPCFG-INFO: Name: " + bdName);
LOG.info("VPPCFG-INFO: Flood: {} ", bridgeDomain.isFlood());
LOG.info("VPPCFG-INFO: Forward: {} ", bridgeDomain.isForward());
LOG.info("VPPCFG-INFO: Learn: {} ", bridgeDomain.isLearn());
LOG.info("VPPCFG-INFO: UnknownUnicastFlood: {} ",
bridgeDomain.isUnknownUnicastFlood());
LOG.info("VPPCFG-INFO: ArpTermination: {} ",
bridgeDomain.isArpTermination());
LOG.info("VPPCFG-INFO: {} </bridgeDomain>", type);
switch (type) {
case CREATE:
case UPDATE:
byte flood = bridgeDomain.isFlood() ? (byte) 1 : (byte) 0;
byte forward = bridgeDomain.isForward() ? (byte) 1 : (byte) 0;
byte learn = bridgeDomain.isLearn() ? (byte) 1 : (byte) 0;
byte uuf = bridgeDomain.isUnknownUnicastFlood() ? (byte) 1 : (byte) 0;
byte arpTerm = bridgeDomain.isArpTermination() ? (byte) 1 : (byte) 0;
if ((bdId == -1) || (bdId == 0)) {
LOG.warn("VPPCFG-WARNING: Bridge Domain create/lookup failed"
+ " (bdId = {})! Ignoring vppSetBridgeDomain request {}",
bdId, type);
return;
} else {
int ctxId = api.bridgeDomainAddDel(bdId, flood, forward,
learn, uuf, arpTerm,
(byte) 1 /* isAdd */);
LOG.info("VPPCFG-INFO: {} api.bridgeDomainAddDel({} ({})) "
+ "ctxId = {}", type, bdName, bdId, ctxId);
while (rv == -77) {
rv = api.getRetval(ctxId, 1 /* release */);
cnt++;
}
LOG.info("VPPCFG-INFO: {} api.bridgeDomainAddDel({} ({})) "
+ "retval {} after {} tries.",
type, bdName, bdId, rv, cnt);
if (rv < 0) {
LOG.warn("VPPCFG-WARNING: {} api.bridgeDomainAddDel({}"
+ " ({})) failed: retval {}!",
type, bdName, bdId, rv);
/* DAW-FIXME: throw exception on failure? */
}
}
break;
default:
LOG.warn("VPPCFG-WARNING: Unknown DataChangeType {}! "
+ "Ignoring vppSetBridgeDomain request", type);
return;
}
bdId = api.bridgeDomainIdFromName(bdName);
LOG.info("VPPCFG-INFO: {} api.bridgeDomainIdFromName({}) = {}",
type, bdName, bdId);
}
private void createOrUpdateBridgeDomain(DataObjectModification<BridgeDomain> changeDiff) {
if (changeDiff.getDataBefore() == null) {
vppSetBridgeDomain(changeDiff.getDataAfter(),
DataChangeType.CREATE, null);
} else {
vppSetBridgeDomain(changeDiff.getDataAfter(),
DataChangeType.UPDATE,
changeDiff.getDataBefore());
}
}
// handles DELETE calls
private void deleteBridgeDomain(DataObjectModification<BridgeDomain> changeDiff) {
DataChangeType type = DataChangeType.DELETE;
BridgeDomain bridgeDomain = changeDiff.getDataBefore();
String bdName = bridgeDomain.getName();
int rv = -77;
int cnt = 0;
LOG.info("VPPCFG-INFO: {} <bridgeDomain>", type);
LOG.info("VPPCFG-INFO: Name: " + bdName);
LOG.info("VPPCFG-INFO: Flood: {} ", bridgeDomain.isFlood());
LOG.info("VPPCFG-INFO: Forward: {} ", bridgeDomain.isForward());
LOG.info("VPPCFG-INFO: Learn: {} ", bridgeDomain.isLearn());
LOG.info("VPPCFG-INFO: UnknownUnicastFlood: {} ",
bridgeDomain.isUnknownUnicastFlood());
LOG.info("VPPCFG-INFO: ArpTermination: {} ",
bridgeDomain.isArpTermination());
LOG.info("VPPCFG-INFO: {} </bridgeDomain>", type);
int bdId = api.findOrAddBridgeDomainId(bdName);
if ((bdId == -1) || (bdId == 0)) {
LOG.warn("VPPCFG-WARNING: Unknown Bridge Domain {} "
+ " (bdId = {})! Ignoring vppSetBridgeDomain request {}",
bdName, bdId, type);
return;
} else {
int ctxId = api.bridgeDomainAddDel(bdId, (byte) 0 /* flood */,
(byte) 0 /* forward */,
(byte) 0 /* learn */,
(byte) 0 /* uuf */,
(byte) 0 /* arpTerm */,
(byte) 0 /* isAdd */);
LOG.info("VPPCFG-INFO: {} api.bridgeDomainAddDel({} ({})) "
+ "ctxId = {}", type, bdName, bdId, ctxId);
while (rv == -77) {
rv = api.getRetval(ctxId, 1 /* release */);
cnt++;
}
LOG.info("VPPCFG-INFO: {} api.bridgeDomainAddDel({} ({})) "
+ "retval {} after {} tries.",
type, bdName, bdId, rv, cnt);
if (rv < 0) {
LOG.warn("VPPCFG-WARNING: {} api.bridgeDomainAddDel({} ({}))"
+ " failed: retval {}!", type, bdName, bdId, rv);
/* DAW-FIXME: throw exception on failure? */
}
}
}
@Override
public void close() throws Exception {
registration.close();
}
}
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