/*
* 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.ovsdb.southbound;
import com.google.common.base.Optional;
import com.google.common.base.Preconditions;
import com.google.common.util.concurrent.CheckedFuture;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.util.Enumeration;
import java.util.concurrent.ExecutionException;
import org.opendaylight.controller.md.sal.binding.api.DataBroker;
import org.opendaylight.controller.md.sal.binding.api.ReadOnlyTransaction;
import org.opendaylight.controller.md.sal.binding.api.ReadWriteTransaction;
import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
import org.opendaylight.controller.md.sal.common.api.data.ReadFailedException;
import org.opendaylight.ovsdb.lib.error.SchemaVersionMismatchException;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.OvsdbBridgeAttributes;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.OvsdbNodeAugmentation;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.OvsdbNodeRef;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.ovsdb.node.attributes.ConnectionInfo;
import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class SouthboundUtil {
private static final Logger LOG = LoggerFactory.getLogger(SouthboundUtil.class);
private static final String SCHEMA_VERSION_MISMATCH =
"{} column for {} table is not supported by this version of the {} schema: {}";
private SouthboundUtil() {
// Prevent instantiating a utility class
}
public static Optional<OvsdbNodeAugmentation> getManagingNode(DataBroker db, OvsdbBridgeAttributes mn) {
Preconditions.checkNotNull(mn);
try {
OvsdbNodeRef ref = mn.getManagedBy();
if (ref != null && ref.getValue() != null) {
ReadOnlyTransaction transaction = db.newReadOnlyTransaction();
@SuppressWarnings("unchecked")
// Note: erasure makes this safe in combination with the typecheck below
InstanceIdentifier<Node> path = (InstanceIdentifier<Node>) ref.getValue();
CheckedFuture<Optional<Node>, ReadFailedException> nf = transaction.read(
LogicalDatastoreType.OPERATIONAL, path);
transaction.close();
Optional<Node> optional = nf.get();
if (optional != null && optional.isPresent()) {
OvsdbNodeAugmentation ovsdbNode = null;
Node node = optional.get();
if (node instanceof OvsdbNodeAugmentation) {
ovsdbNode = (OvsdbNodeAugmentation) node;
} else if (node != null) {
ovsdbNode = node.getAugmentation(OvsdbNodeAugmentation.class);
}
if (ovsdbNode != null) {
return Optional.of(ovsdbNode);
} else {
LOG.warn("OvsdbManagedNode {} claims to be managed by {} but "
+ "that OvsdbNode does not exist", mn, ref.getValue());
return Optional.absent();
}
} else {
LOG.warn("Mysteriously got back a thing which is *not* a topology Node: {}", optional);
return Optional.absent();
}
} else {
LOG.warn("Cannot find client for OvsdbManagedNode without a specified ManagedBy {}", mn);
return Optional.absent();
}
} catch (InterruptedException | ExecutionException e) {
LOG.warn("Failed to get OvsdbNode that manages OvsdbManagedNode {}", mn, e);
return Optional.absent();
}
}
public static <D extends org.opendaylight.yangtools.yang.binding.DataObject> Optional<D> readNode(
ReadWriteTransaction transaction, final InstanceIdentifier<D> connectionIid) {
Optional<D> node = Optional.absent();
try {
node = transaction.read(LogicalDatastoreType.OPERATIONAL, connectionIid).checkedGet();
} catch (final ReadFailedException e) {
LOG.warn("Read Operational/DS for Node failed! {}", connectionIid, e);
}
return node;
}
private static String getLocalControllerHostIpAddress() {
String ipaddress = null;
try {
Enumeration<NetworkInterface> ifaces = NetworkInterface.getNetworkInterfaces();
if (ifaces != null) {
while (ifaces.hasMoreElements()) {
NetworkInterface iface = ifaces.nextElement();
for (Enumeration<InetAddress> inetAddrs = iface.getInetAddresses(); inetAddrs.hasMoreElements();) {
InetAddress inetAddr = inetAddrs.nextElement();
if (!inetAddr.isLoopbackAddress() && inetAddr.isSiteLocalAddress()) {
ipaddress = inetAddr.getHostAddress();
break;
}
}
}
} else {
LOG.warn("Local Host don't have any associated IP address");
}
} catch (SocketException e) {
LOG.warn("Exception while fetching local host ip address ",e);
}
return ipaddress;
}
public static String getControllerTarget(Node ovsdbNode) {
String target = null;
String ipAddr = null;
OvsdbNodeAugmentation ovsdbNodeAugmentation = ovsdbNode.getAugmentation(OvsdbNodeAugmentation.class);
ConnectionInfo connectionInfo = ovsdbNodeAugmentation.getConnectionInfo();
LOG.info("connectionInfo: {}", connectionInfo);
if (connectionInfo != null && connectionInfo.getLocalIp() != null) {
ipAddr = String.valueOf(connectionInfo.getLocalIp().getValue());
}
if (ipAddr == null) {
ipAddr = getLocalControllerHostIpAddress();
}
if (ipAddr != null) {
target = SouthboundConstants.OPENFLOW_CONNECTION_PROTOCOL + ":"
+ ipAddr + ":" + SouthboundConstants.DEFAULT_OPENFLOW_PORT;
}
return target;
}
public static String connectionInfoToString(final ConnectionInfo connectionInfo) {
return String.valueOf(
connectionInfo.getRemoteIp().getValue()) + ":" + connectionInfo.getRemotePort().getValue();
}
public static void schemaMismatchLog(String column, String table, SchemaVersionMismatchException ex) {
LOG.debug(SCHEMA_VERSION_MISMATCH, column, table, SouthboundConstants.OPEN_V_SWITCH, ex.getMessage());
}
}