/**
* Copyright (c) 2015 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.openflowplugin.impl.connection;
import com.google.common.base.Preconditions;
import java.math.BigInteger;
import java.net.InetSocketAddress;
import java.util.Objects;
import org.opendaylight.mdsal.singleton.common.api.ServiceGroupIdentifier;
import org.opendaylight.openflowjava.protocol.api.connection.ConnectionAdapter;
import org.opendaylight.openflowjava.protocol.api.connection.OutboundQueue;
import org.opendaylight.openflowjava.protocol.api.connection.OutboundQueueHandlerRegistration;
import org.opendaylight.openflowplugin.api.openflow.connection.ConnectionContext;
import org.opendaylight.openflowplugin.api.openflow.connection.HandshakeContext;
import org.opendaylight.openflowplugin.api.openflow.connection.OutboundQueueProvider;
import org.opendaylight.openflowplugin.api.openflow.device.DeviceInfo;
import org.opendaylight.openflowplugin.api.openflow.device.handlers.DeviceDisconnectedHandler;
import org.opendaylight.openflowplugin.impl.statistics.ofpspecific.SessionStatistics;
import org.opendaylight.openflowplugin.impl.util.DeviceStateUtil;
import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeId;
import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node;
import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.NodeKey;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.FeaturesReply;
import org.opendaylight.yangtools.yang.binding.KeyedInstanceIdentifier;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
*
*/
public class ConnectionContextImpl implements ConnectionContext {
private final ConnectionAdapter connectionAdapter;
private volatile CONNECTION_STATE connectionState;
private FeaturesReply featuresReply;
private NodeId nodeId;
private DeviceDisconnectedHandler deviceDisconnectedHandler;
private static final Logger LOG = LoggerFactory.getLogger(ConnectionContextImpl.class);
private OutboundQueueProvider outboundQueueProvider;
private OutboundQueueHandlerRegistration<OutboundQueueProvider> outboundQueueHandlerRegistration;
private HandshakeContext handshakeContext;
private DeviceInfo deviceInfo;
/**
* @param connectionAdapter
*/
public ConnectionContextImpl(final ConnectionAdapter connectionAdapter) {
this.connectionAdapter = connectionAdapter;
}
@Override
public ConnectionAdapter getConnectionAdapter() {
return connectionAdapter;
}
@Override
public OutboundQueue getOutboundQueueProvider() {
return this.outboundQueueProvider;
}
@Override
public void setOutboundQueueProvider(final OutboundQueueProvider outboundQueueProvider) {
this.outboundQueueProvider = outboundQueueProvider;
((DeviceInfoImpl)this.deviceInfo).setOutboundQueueProvider(this.outboundQueueProvider);
}
@Override
public CONNECTION_STATE getConnectionState() {
return connectionState;
}
@Override
public NodeId getNodeId() {
return nodeId;
}
@Override
public void setNodeId(final NodeId nodeId) {
this.nodeId = nodeId;
}
@Override
public FeaturesReply getFeatures() {
return featuresReply;
}
@Override
public void setDeviceDisconnectedHandler(final DeviceDisconnectedHandler deviceDisconnectedHandler) {
this.deviceDisconnectedHandler = deviceDisconnectedHandler;
}
@Override
public void setFeatures(final FeaturesReply featuresReply) {
this.featuresReply = featuresReply;
}
@Override
public void closeConnection(final boolean propagate) {
if (Objects.isNull(nodeId)){
SessionStatistics.countEvent(connectionAdapter.getRemoteAddress().toString(), SessionStatistics.ConnectionStatus.CONNECTION_DISCONNECTED_BY_OFP);
} else {
SessionStatistics.countEvent(nodeId.toString(), SessionStatistics.ConnectionStatus.CONNECTION_DISCONNECTED_BY_OFP);
}
final BigInteger datapathId = Objects.nonNull(featuresReply) ? featuresReply.getDatapathId() : BigInteger.ZERO;
if (LOG.isDebugEnabled()) {
LOG.debug("Actively closing connection: {}, datapathId: {}",
connectionAdapter.getRemoteAddress(), datapathId);
}
connectionState = ConnectionContext.CONNECTION_STATE.RIP;
unregisterOutboundQueue();
closeHandshakeContext();
if (getConnectionAdapter().isAlive()) {
getConnectionAdapter().disconnect();
}
if (propagate) {
propagateDeviceDisconnectedEvent();
}
}
private void closeHandshakeContext() {
LOG.debug("Trying closing handshake context for node {}", getSafeNodeIdForLOG());
if (handshakeContext != null) {
try {
handshakeContext.close();
} catch (Exception e) {
LOG.error("handshake context closing failed:{} ", e);
} finally {
handshakeContext = null;
}
}
}
@Override
public void onConnectionClosed() {
connectionState = ConnectionContext.CONNECTION_STATE.RIP;
if (null == nodeId){
SessionStatistics.countEvent(connectionAdapter.getRemoteAddress().toString(), SessionStatistics.ConnectionStatus.CONNECTION_DISCONNECTED_BY_DEVICE);
} else {
SessionStatistics.countEvent(nodeId.toString(), SessionStatistics.ConnectionStatus.CONNECTION_DISCONNECTED_BY_DEVICE);
}
final InetSocketAddress remoteAddress = connectionAdapter.getRemoteAddress();
final Short auxiliaryId;
if (null != getFeatures() && null != getFeatures().getAuxiliaryId()) {
auxiliaryId = getFeatures().getAuxiliaryId();
} else {
auxiliaryId = 0;
}
LOG.debug("disconnecting: node={}|auxId={}|connection state = {}",
remoteAddress,
auxiliaryId,
getConnectionState());
unregisterOutboundQueue();
closeHandshakeContext();
propagateDeviceDisconnectedEvent();
}
private void propagateDeviceDisconnectedEvent() {
if (Objects.nonNull(deviceDisconnectedHandler)) {
final BigInteger datapathId = featuresReply != null ? featuresReply.getDatapathId() : BigInteger.ZERO;
if (LOG.isDebugEnabled()) {
LOG.debug("Propagating connection closed event: {}, datapathId:{}.",
connectionAdapter.getRemoteAddress(), datapathId);
}
deviceDisconnectedHandler.onDeviceDisconnected(this);
}
}
/**
* This method returns safe nodeId for logging
* @return string value od nodeId or string "null"
*/
@Override
public String getSafeNodeIdForLOG() {
return Objects.nonNull(nodeId) ? nodeId.getValue() : "null";
}
@Override
public void setOutboundQueueHandleRegistration(OutboundQueueHandlerRegistration<OutboundQueueProvider> outboundQueueHandlerRegistration) {
this.outboundQueueHandlerRegistration = outboundQueueHandlerRegistration;
}
private void unregisterOutboundQueue() {
if (LOG.isDebugEnabled()) {
LOG.debug("Trying unregister outbound queue handler registration for node {}", nodeId);
}
if (outboundQueueHandlerRegistration != null) {
outboundQueueHandlerRegistration.close();
outboundQueueHandlerRegistration = null;
}
}
@Override
public synchronized void changeStateToHandshaking() {
connectionState = CONNECTION_STATE.HANDSHAKING;
}
@Override
public synchronized void changeStateToTimeouting() {
connectionState = CONNECTION_STATE.TIMEOUTING;
}
@Override
public synchronized void changeStateToWorking() {
connectionState = CONNECTION_STATE.WORKING;
}
@Override
public DeviceInfo getDeviceInfo() {
return this.deviceInfo;
}
@Override
public void handshakeSuccessful() {
Preconditions.checkNotNull(nodeId, "Cannot create DeviceInfo if 'NodeId' is not set!");
Preconditions.checkNotNull(featuresReply, "Cannot create DeviceInfo if 'features' is not set!");
this.deviceInfo = new DeviceInfoImpl(
nodeId,
DeviceStateUtil.createNodeInstanceIdentifier(nodeId),
featuresReply.getVersion(),
featuresReply.getDatapathId(),
outboundQueueProvider);
}
@Override
public void setHandshakeContext(HandshakeContext handshakeContext) {
this.handshakeContext = handshakeContext;
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
ConnectionContextImpl that = (ConnectionContextImpl) o;
if (!connectionAdapter.equals(that.connectionAdapter)) {
return false;
}
if (featuresReply != null ? !featuresReply.equals(that.featuresReply) : that.featuresReply != null) {
return false;
}
return nodeId != null ? nodeId.equals(that.nodeId) : that.nodeId == null;
}
@Override
public int hashCode() {
int result = connectionAdapter.hashCode();
result = 31 * result + (featuresReply != null ? featuresReply.hashCode() : 0);
result = 31 * result + (nodeId != null ? nodeId.hashCode() : 0);
return result;
}
private class DeviceInfoImpl implements DeviceInfo {
private final NodeId nodeId;
private final KeyedInstanceIdentifier<Node, NodeKey> nodeII;
private final Short version;
private final BigInteger datapathId;
private final ServiceGroupIdentifier serviceGroupIdentifier;
private OutboundQueue outboundQueueProvider;
DeviceInfoImpl(
final NodeId nodeId,
final KeyedInstanceIdentifier<Node, NodeKey> nodeII,
final Short version,
final BigInteger datapathId,
final OutboundQueue outboundQueueProvider) {
this.nodeId = nodeId;
this.nodeII = nodeII;
this.version = version;
this.datapathId = datapathId;
this.outboundQueueProvider = outboundQueueProvider;
this.serviceGroupIdentifier = ServiceGroupIdentifier.create(this.nodeId.getValue());
}
@Override
public NodeId getNodeId() {
return nodeId;
}
@Override
public KeyedInstanceIdentifier<Node, NodeKey> getNodeInstanceIdentifier() {
return nodeII;
}
@Override
public short getVersion() {
return version;
}
@Override
public BigInteger getDatapathId() {
return datapathId;
}
@Override
public ServiceGroupIdentifier getServiceIdentifier() {
return this.serviceGroupIdentifier;
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
DeviceInfoImpl that = (DeviceInfoImpl) o;
return (nodeId.equals(that.nodeId) &&
nodeII.equals(that.nodeII) &&
version.equals(that.version) &&
datapathId.equals(that.datapathId));
}
@Override
public int hashCode() {
int result = nodeId.hashCode();
result = 31 * result + nodeII.hashCode();
result = 31 * result + version.hashCode();
result = 31 * result + datapathId.hashCode();
return result;
}
public void setOutboundQueueProvider(final OutboundQueue outboundQueueProvider) {
this.outboundQueueProvider = outboundQueueProvider;
}
@Override
public Long reserveXidForDeviceMessage() {
return outboundQueueProvider.reserveEntry();
}
}
}