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/*
* Copyright 2014-2015 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.config;
import static org.slf4j.LoggerFactory.getLogger;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.HashSet;
import java.util.Set;
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.IpPrefix;
import org.onlab.packet.MacAddress;
import org.onlab.packet.VlanId;
import org.onosproject.net.ConnectPoint;
import org.onosproject.net.DeviceId;
import org.onosproject.net.PortNumber;
import org.onosproject.net.host.HostAdminService;
import org.onosproject.net.host.InterfaceIpAddress;
import org.onosproject.net.host.PortAddresses;
import org.slf4j.Logger;
import com.fasterxml.jackson.databind.ObjectMapper;
/**
* Simple configuration module to read in supplementary network configuration
* from a file.
*/
@Component(immediate = true)
@Service
public class NetworkConfigReader implements NetworkConfigService {
private final Logger log = getLogger(getClass());
// Current working is /opt/onos/apache-karaf-*
// TODO: Set the path to /opt/onos/config
private static final String CONFIG_DIR = "../config";
private static final String DEFAULT_CONFIG_FILE = "addresses.json";
private String configFileName = DEFAULT_CONFIG_FILE;
@Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
protected HostAdminService hostAdminService;
@Activate
protected void activate() {
AddressConfiguration config = readNetworkConfig();
if (config != null) {
applyNetworkConfig(config);
}
log.info("Started network config reader");
}
@Deactivate
protected void deactivate() {
log.info("Stopped");
}
/**
* Reads the network configuration.
*
* @return the network configuration on success, otherwise null
*/
private AddressConfiguration readNetworkConfig() {
File configFile = new File(CONFIG_DIR, configFileName);
ObjectMapper mapper = new ObjectMapper();
try {
log.info("Loading config: {}", configFile.getAbsolutePath());
AddressConfiguration config =
mapper.readValue(configFile, AddressConfiguration.class);
return config;
} catch (FileNotFoundException e) {
log.warn("Configuration file not found: {}", configFileName);
} catch (IOException e) {
log.error("Error loading configuration", e);
}
return null;
}
/**
* Applies the network configuration.
*
* @param config the network configuration to apply
*/
private void applyNetworkConfig(AddressConfiguration config) {
for (AddressEntry entry : config.getAddresses()) {
ConnectPoint cp = new ConnectPoint(
DeviceId.deviceId(dpidToUri(entry.getDpid())),
PortNumber.portNumber(entry.getPortNumber()));
Set<InterfaceIpAddress> interfaceIpAddresses = new HashSet<>();
for (String strIp : entry.getIpAddresses()) {
// Get the IP address and the subnet mask length
try {
String[] splits = strIp.split("/");
if (splits.length != 2) {
throw new IllegalArgumentException(
"Invalid IP address and prefix length format");
}
// NOTE: IpPrefix will mask-out the bits after the prefix length.
IpPrefix subnet = IpPrefix.valueOf(strIp);
IpAddress addr = IpAddress.valueOf(splits[0]);
InterfaceIpAddress ia =
new InterfaceIpAddress(addr, subnet);
interfaceIpAddresses.add(ia);
} catch (IllegalArgumentException e) {
log.warn("Bad format for IP address in config: {}", strIp);
}
}
MacAddress macAddress = null;
if (entry.getMacAddress() != null) {
try {
macAddress = MacAddress.valueOf(entry.getMacAddress());
} catch (IllegalArgumentException e) {
log.warn("Bad format for MAC address in config: {}",
entry.getMacAddress());
}
}
VlanId vlan = null;
if (entry.getVlan() == null) {
vlan = VlanId.NONE;
} else {
try {
vlan = VlanId.vlanId(entry.getVlan());
} catch (IllegalArgumentException e) {
log.warn("Bad format for VLAN id in config: {}",
entry.getVlan());
vlan = VlanId.NONE;
}
}
PortAddresses addresses = new PortAddresses(cp,
interfaceIpAddresses, macAddress, vlan);
hostAdminService.bindAddressesToPort(addresses);
}
}
private static String dpidToUri(String dpid) {
return "of:" + dpid.replace(":", "");
}
}
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