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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.ovsdb.providers.device;
import static com.google.common.base.Preconditions.checkNotNull;
import static org.slf4j.LoggerFactory.getLogger;
import java.net.URI;
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.ChassisId;
import org.onlab.packet.IpAddress;
import org.onosproject.net.DefaultAnnotations;
import org.onosproject.net.Device;
import org.onosproject.net.DeviceId;
import org.onosproject.net.MastershipRole;
import org.onosproject.net.SparseAnnotations;
import org.onosproject.net.device.DefaultDeviceDescription;
import org.onosproject.net.device.DeviceDescription;
import org.onosproject.net.device.DeviceProvider;
import org.onosproject.net.device.DeviceProviderRegistry;
import org.onosproject.net.device.DeviceProviderService;
import org.onosproject.net.device.DeviceService;
import org.onosproject.net.provider.AbstractProvider;
import org.onosproject.net.provider.ProviderId;
import org.onosproject.ovsdb.controller.OvsdbClientService;
import org.onosproject.ovsdb.controller.OvsdbController;
import org.onosproject.ovsdb.controller.OvsdbNodeId;
import org.onosproject.ovsdb.controller.OvsdbNodeListener;
import org.slf4j.Logger;
/**
* Provider which uses an ovsdb controller to detect device.
*/
@Component(immediate = true)
@Service
public class OvsdbDeviceProvider extends AbstractProvider
implements DeviceProvider {
private final Logger log = getLogger(getClass());
@Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
protected DeviceProviderRegistry providerRegistry;
@Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
protected DeviceService deviceService;
@Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
protected OvsdbController controller;
private DeviceProviderService providerService;
private OvsdbNodeListener innerNodeListener = new InnerOvsdbNodeListener();
protected static final String ISNOTNULL = "OvsdbNodeId is not null";
private static final String UNKNOWN = "unknown";
@Activate
public void activate() {
providerService = providerRegistry.register(this);
controller.addNodeListener(innerNodeListener);
log.info("Started");
}
@Deactivate
public void deactivate() {
providerRegistry.unregister(this);
providerService = null;
log.info("Stopped");
}
public OvsdbDeviceProvider() {
super(new ProviderId("ovsdb", "org.onosproject.ovsdb.provider.device"));
}
@Override
public void triggerProbe(DeviceId deviceId) {
log.info("Triggering probe on device {}", deviceId);
if (!isReachable(deviceId)) {
log.error("Failed to probe device {}", deviceId);
providerService.deviceDisconnected(deviceId);
return;
} else {
log.trace("Confirmed device {} connection", deviceId);
}
}
@Override
public void roleChanged(DeviceId deviceId, MastershipRole newRole) {
// TODO: This will be implemented later.
}
@Override
public boolean isReachable(DeviceId deviceId) {
OvsdbClientService ovsdbClient = controller.getOvsdbClient(changeDeviceIdToNodeId(deviceId));
return !(ovsdbClient == null || !ovsdbClient.isConnected());
}
private class InnerOvsdbNodeListener implements OvsdbNodeListener {
@Override
public void nodeAdded(OvsdbNodeId nodeId) {
checkNotNull(nodeId, ISNOTNULL);
DeviceId deviceId = DeviceId.deviceId(nodeId.toString());
URI uri = URI.create(nodeId.toString());
ChassisId cid = new ChassisId();
String ipAddress = nodeId.getIpAddress();
SparseAnnotations annotations = DefaultAnnotations.builder()
.set("ipaddress", ipAddress).build();
DeviceDescription deviceDescription = new DefaultDeviceDescription(
uri,
Device.Type.CONTROLLER,
UNKNOWN, UNKNOWN,
UNKNOWN, UNKNOWN,
cid,
annotations);
providerService.deviceConnected(deviceId, deviceDescription);
}
@Override
public void nodeRemoved(OvsdbNodeId nodeId) {
checkNotNull(nodeId, ISNOTNULL);
DeviceId deviceId = DeviceId.deviceId(nodeId.toString());
providerService.deviceDisconnected(deviceId);
}
}
private OvsdbNodeId changeDeviceIdToNodeId(DeviceId deviceId) {
String[] strings = deviceId.toString().split(":");
if (strings.length < 1) {
return null;
}
return new OvsdbNodeId(IpAddress.valueOf(strings[1]), 0);
}
}
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