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/*
* Copyright 2015 Open Networking Laboratory
*
* 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 org.onosproject.incubator.net.intf.impl;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Maps;
import org.apache.felix.scr.annotations.Activate;
import org.apache.felix.scr.annotations.Component;
import org.apache.felix.scr.annotations.Deactivate;
import org.apache.felix.scr.annotations.Reference;
import org.apache.felix.scr.annotations.ReferenceCardinality;
import org.apache.felix.scr.annotations.Service;
import org.onlab.packet.IpAddress;
import org.onlab.packet.VlanId;
import org.onosproject.incubator.net.config.basics.ConfigException;
import org.onosproject.incubator.net.config.basics.InterfaceConfig;
import org.onosproject.incubator.net.intf.Interface;
import org.onosproject.incubator.net.intf.InterfaceAdminService;
import org.onosproject.incubator.net.intf.InterfaceService;
import org.onosproject.net.ConnectPoint;
import org.onosproject.net.config.NetworkConfigEvent;
import org.onosproject.net.config.NetworkConfigListener;
import org.onosproject.net.config.NetworkConfigService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.Collections;
import java.util.Map;
import java.util.Optional;
import java.util.Set;
import static java.util.stream.Collectors.collectingAndThen;
import static java.util.stream.Collectors.toSet;
/**
* Manages the inventory of interfaces in the system.
*/
@Service
@Component(immediate = true)
public class InterfaceManager implements InterfaceService,
InterfaceAdminService {
private final Logger log = LoggerFactory.getLogger(getClass());
private static final Class<ConnectPoint> SUBJECT_CLASS = ConnectPoint.class;
private static final Class<InterfaceConfig> CONFIG_CLASS = InterfaceConfig.class;
@Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
protected NetworkConfigService configService;
private final InternalConfigListener listener = new InternalConfigListener();
private final Map<ConnectPoint, Set<Interface>> interfaces = Maps.newConcurrentMap();
@Activate
public void activate() {
configService.addListener(listener);
// TODO address concurrency issues here
for (ConnectPoint subject : configService.getSubjects(SUBJECT_CLASS, CONFIG_CLASS)) {
InterfaceConfig config = configService.getConfig(subject, CONFIG_CLASS);
if (config != null) {
updateInterfaces(config);
}
}
log.info("Started");
}
@Deactivate
public void deactivate() {
configService.removeListener(listener);
log.info("Stopped");
}
@Override
public Set<Interface> getInterfaces() {
return interfaces.values()
.stream()
.flatMap(set -> set.stream())
.collect(collectingAndThen(toSet(), ImmutableSet::copyOf));
}
@Override
public Set<Interface> getInterfacesByPort(ConnectPoint port) {
Set<Interface> intfs = interfaces.get(port);
if (intfs == null) {
return Collections.emptySet();
}
return ImmutableSet.copyOf(intfs);
}
@Override
public Set<Interface> getInterfacesByIp(IpAddress ip) {
return interfaces.values()
.stream()
.flatMap(set -> set.stream())
.filter(intf -> intf.ipAddresses()
.stream()
.anyMatch(ia -> ia.ipAddress().equals(ip)))
.collect(collectingAndThen(toSet(), ImmutableSet::copyOf));
}
@Override
public Interface getMatchingInterface(IpAddress ip) {
Optional<Interface> match = interfaces.values()
.stream()
.flatMap(set -> set.stream())
.filter(intf -> intf.ipAddresses()
.stream()
.anyMatch(intfIp -> intfIp.subnetAddress().contains(ip)))
.findFirst();
if (match.isPresent()) {
return match.get();
}
return null;
}
@Override
public Set<Interface> getInterfacesByVlan(VlanId vlan) {
return interfaces.values()
.stream()
.flatMap(set -> set.stream())
.filter(intf -> intf.vlan().equals(vlan))
.collect(collectingAndThen(toSet(), ImmutableSet::copyOf));
}
private void updateInterfaces(InterfaceConfig intfConfig) {
try {
interfaces.put(intfConfig.subject(), intfConfig.getInterfaces());
} catch (ConfigException e) {
log.error("Error in interface config", e);
}
}
private void removeInterfaces(ConnectPoint port) {
interfaces.remove(port);
}
@Override
public void add(Interface intf) {
if (interfaces.containsKey(intf.connectPoint())) {
boolean conflict = interfaces.get(intf.connectPoint()).stream()
.filter(i -> i.connectPoint().equals(intf.connectPoint()))
.filter(i -> i.mac().equals(intf.mac()))
.filter(i -> i.vlan().equals(intf.vlan()))
.findAny().isPresent();
if (conflict) {
log.error("Can't add interface because it conflicts with existing config");
return;
}
}
InterfaceConfig config =
configService.addConfig(intf.connectPoint(), CONFIG_CLASS);
config.addInterface(intf);
configService.applyConfig(intf.connectPoint(), CONFIG_CLASS, config.node());
}
@Override
public void remove(ConnectPoint connectPoint, VlanId vlanId) {
Optional<Interface> intf = interfaces.get(connectPoint).stream()
.filter(i -> i.vlan().equals(vlanId))
.findAny();
if (!intf.isPresent()) {
log.error("Can't find interface {}/{} to remove", connectPoint, vlanId);
return;
}
InterfaceConfig config = configService.addConfig(intf.get().connectPoint(), CONFIG_CLASS);
config.removeInterface(intf.get());
try {
if (config.getInterfaces().isEmpty()) {
configService.removeConfig(connectPoint, CONFIG_CLASS);
} else {
configService.applyConfig(intf.get().connectPoint(), CONFIG_CLASS, config.node());
}
} catch (ConfigException e) {
log.error("Error reading interfaces JSON", e);
}
}
/**
* Listener for network config events.
*/
private class InternalConfigListener implements NetworkConfigListener {
@Override
public void event(NetworkConfigEvent event) {
switch (event.type()) {
case CONFIG_ADDED:
case CONFIG_UPDATED:
if (event.configClass() == InterfaceConfig.class) {
InterfaceConfig config =
configService.getConfig((ConnectPoint) event.subject(), InterfaceConfig.class);
updateInterfaces(config);
}
break;
case CONFIG_REMOVED:
if (event.configClass() == InterfaceConfig.class) {
removeInterfaces((ConnectPoint) event.subject());
}
break;
case CONFIG_REGISTERED:
case CONFIG_UNREGISTERED:
default:
break;
}
}
}
}
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