/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 com.cloud.network.resource;
import java.util.Map;
import java.util.UUID;
import javax.naming.ConfigurationException;
import javax.ws.rs.core.MultivaluedMap;
import org.apache.log4j.Logger;
import org.libvirt.LibvirtException;
import org.midonet.client.MidonetApi;
import org.midonet.client.resource.Bridge;
import org.midonet.client.resource.BridgePort;
import org.midonet.client.resource.Host;
import com.sun.jersey.core.util.MultivaluedMapImpl;
import com.cloud.agent.api.to.NicTO;
import com.cloud.exception.InternalErrorException;
import com.cloud.hypervisor.kvm.resource.LibvirtVMDef;
import com.cloud.hypervisor.kvm.resource.VifDriverBase;
import com.cloud.network.Networks;
import com.cloud.utils.NumbersUtil;
import com.cloud.utils.script.OutputInterpreter;
import com.cloud.utils.script.Script;
public class MidoNetVifDriver extends VifDriverBase {
private static final Logger s_logger = Logger.getLogger(MidoNetVifDriver.class);
private int _timeout;
private String _midoApiLocation = "http://localhost:8081/";
private static final String midoPostfix = "mnet";
@Override
public void configure(Map<String, Object> params) throws ConfigurationException {
super.configure(params);
String value = (String)params.get("scripts.timeout");
_timeout = NumbersUtil.parseInt(value, 30 * 60) * 1000;
// Load Midonet API server location
String midoLoc = (String)params.get("midonet.apiserver.address");
if (midoLoc != null) {
_midoApiLocation = midoLoc;
}
}
/*
* Grab our host id in a file written by Midonet, then
* return a Host.
*/
private Host getMyHost(MidonetApi api) {
Script command = new Script("/bin/bash", _timeout);
command.add("-c");
command.add("awk -F'=' '{if ($1~/host/) print $2}' /etc/midolman/host_uuid.properties");
OutputInterpreter.AllLinesParser parser = new OutputInterpreter.AllLinesParser();
command.execute(parser);
String host_uuid = parser.getLines().split("\\n")[0];
for (Host host : api.getHosts()) {
if (host.getId().toString().equals(host_uuid)) {
return host;
}
}
return null;
}
/*
* simple script to add the tap to the host and bring it up.
*/
private String addTap() {
OutputInterpreter.AllLinesParser parser = new OutputInterpreter.AllLinesParser();
Script command = new Script("/bin/bash", _timeout);
command.add("-c");
command.add("ip tuntap add mode tap dev '%d" + midoPostfix + "' && ip link | grep " + midoPostfix + " | sort -n | tail -1 | awk -F': ' '{print $2}'");
command.execute(parser);
String tapName = parser.getLines().split("\\n")[0];
command = new Script("/bin/bash", _timeout);
command.add("-c");
command.add("ip link set " + tapName + " up");
command.execute();
return tapName;
}
@Override
public LibvirtVMDef.InterfaceDef plug(NicTO nic, String guestOsType) throws InternalErrorException, LibvirtException {
if (s_logger.isDebugEnabled()) {
s_logger.debug("nic=" + nic);
}
LibvirtVMDef.InterfaceDef intf = new LibvirtVMDef.InterfaceDef();
String trafficLabel = nic.getName();
if (nic.getBroadcastType() == Networks.BroadcastDomainType.Mido && (nic.getType() == Networks.TrafficType.Guest || nic.getType() == Networks.TrafficType.Public)) {
/*
* create the tap.
*/
String tapName = addTap();
/*
* grab the tenant id and the network id from the Broadcast URI.
* We need to pluck the values out of the String. The string
* should look like "mido://[tenant_id].[bridge_name]"
*/
MultivaluedMap qNet = new MultivaluedMapImpl();
String nicAuthority = nic.getBroadcastUri().getAuthority();
String tenantId = nicAuthority.split("\\.")[0];
qNet.add("tenant_id", tenantId);
String url = nicAuthority.split("\\.")[1];
String netName = url.split(":")[0];
MidonetApi api = new MidonetApi(_midoApiLocation);
api.enableLogging();
for (Bridge b : api.getBridges(qNet)) {
if (b.getName().equals(netName)) {
for (BridgePort p : b.getPorts()) {
UUID pvif = p.getVifId();
if (pvif != null && p.getVifId().toString().equals(nic.getUuid())) {
getMyHost(api).addHostInterfacePort().interfaceName(tapName).portId(p.getId()).create();
break;
}
}
}
}
intf.defEthernet(tapName, nic.getMac(), getGuestNicModel(guestOsType), "");
} else {
throw new InternalErrorException("Only NICs of BroadcastDomain type Mido are supported by the MidoNetVifDriver");
}
return intf;
}
@Override
public void unplug(LibvirtVMDef.InterfaceDef iface) {
String netName = iface.getBrName();
if (netName != null && netName.contains(midoPostfix)) {
Script command = new Script("/bin/bash", _timeout);
command.add("-c");
command.add("ip tuntap del " + iface.getBrName() + " mode tap");
command.execute();
}
}
}