| package net.onrc.onos.core.datastore.topology; |
| |
| import java.nio.ByteBuffer; |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.Iterator; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.TreeSet; |
| |
| import net.onrc.onos.core.datastore.DataStoreClient; |
| import net.onrc.onos.core.datastore.IKVTable.IKVEntry; |
| import net.onrc.onos.core.datastore.serializers.Device.DeviceProperty; |
| import net.onrc.onos.core.datastore.topology.KVLink.STATUS; |
| import net.onrc.onos.core.datastore.utils.ByteArrayComparator; |
| import net.onrc.onos.core.datastore.utils.ByteArrayUtil; |
| import net.onrc.onos.core.datastore.utils.KVObject; |
| import net.onrc.onos.core.topology.HostEvent; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import com.esotericsoftware.kryo.Kryo; |
| import com.google.protobuf.ByteString; |
| import com.google.protobuf.InvalidProtocolBufferException; |
| |
| /** |
| * Host object. |
| * <p/> |
| */ |
| public class KVDevice extends KVObject { |
| private static final Logger log = LoggerFactory.getLogger(KVDevice.class); |
| |
| private static final ThreadLocal<Kryo> DEVICE_KRYO = new ThreadLocal<Kryo>() { |
| @Override |
| protected Kryo initialValue() { |
| Kryo kryo = new Kryo(); |
| kryo.setRegistrationRequired(true); |
| kryo.setReferences(false); |
| kryo.register(byte[].class); |
| kryo.register(byte[][].class); |
| kryo.register(HashMap.class); |
| // TODO check if we should explicitly specify EnumSerializer |
| kryo.register(STATUS.class); |
| return kryo; |
| } |
| }; |
| |
| static final String DEVICE_TABLE_SUFFIX = ":Host"; |
| |
| private final byte[] mac; |
| private TreeSet<byte[]> portIds; |
| |
| /** |
| * Generate a HostID from MAC address. |
| * <p/> |
| * We're assuming MAC address can be an unique identifier for Host. |
| * |
| * @param mac MAC address |
| * @return HostID |
| */ |
| public static byte[] getHostID(final byte[] mac) { |
| return HostEvent.getHostID(mac).array(); |
| } |
| |
| /** |
| * Gets the MAC address from HostID. |
| * |
| * @param key HostID |
| * @return MAC address |
| */ |
| public static byte[] getMacFromKey(final byte[] key) { |
| ByteBuffer keyBuf = ByteBuffer.wrap(key); |
| if (keyBuf.getChar() != 'H') { |
| throw new IllegalArgumentException("Invalid Host key"); |
| } |
| byte[] mac = new byte[keyBuf.remaining()]; |
| keyBuf.get(mac); |
| return mac; |
| } |
| |
| /** |
| * KVDevice constructor for default namespace. |
| * |
| * @param mac MAC address |
| */ |
| public KVDevice(final byte[] mac) { |
| this(mac, DEFAULT_NAMESPACE); |
| } |
| |
| /** |
| * KVDevice constructor for specified namespace. |
| * |
| * @param mac MAC address |
| * @param namespace namespace to create this object |
| */ |
| public KVDevice(final byte[] mac, final String namespace) { |
| super(DataStoreClient.getClient() |
| .getTable(namespace + DEVICE_TABLE_SUFFIX), |
| getHostID(mac), namespace); |
| |
| this.mac = mac.clone(); |
| this.portIds = new TreeSet<>(ByteArrayComparator.BYTEARRAY_COMPARATOR); |
| } |
| |
| /** |
| * Gets an instance from HostID in default namespace. |
| * <p/> |
| * Note: You need to call `read()` to get the DB content. |
| * |
| * @param key HostID |
| * @return KVDevice instance |
| */ |
| public static KVDevice createFromKey(final byte[] key) { |
| return createFromKey(key, DEFAULT_NAMESPACE); |
| } |
| |
| /** |
| * Gets an instance from HostID in specified namespace. |
| * <p/> |
| * Note: You need to call `read()` to get the DB content. |
| * |
| * @param key HostID |
| * @param namespace namespace to create this object in |
| * @return KVDevice instance |
| */ |
| public static KVDevice createFromKey(final byte[] key, final String namespace) { |
| return new KVDevice(getMacFromKey(key), namespace); |
| } |
| |
| /** |
| * Gets all the Devices in default namespace. |
| * |
| * @return Devices |
| */ |
| public static Iterable<KVDevice> getAllDevices() { |
| return new DeviceEnumerator(DEFAULT_NAMESPACE); |
| } |
| |
| /** |
| * Gets all the Devices in specified namespace. |
| * |
| * @param namespace namespace to iterate over |
| * @return Devices |
| */ |
| public static Iterable<KVDevice> getAllDevices(final String namespace) { |
| return new DeviceEnumerator(namespace); |
| } |
| |
| /** |
| * Utility class to provide Iterable interface. |
| */ |
| public static class DeviceEnumerator implements Iterable<KVDevice> { |
| |
| private final String namespace; |
| |
| /** |
| * Constructor to iterate Links in specified namespace. |
| * |
| * @param namespace namespace to iterate through |
| */ |
| public DeviceEnumerator(final String namespace) { |
| this.namespace = namespace; |
| } |
| |
| @Override |
| public Iterator<KVDevice> iterator() { |
| return new DeviceIterator(namespace); |
| } |
| } |
| |
| /** |
| * Utility class to provide Iterator over all the Host objects. |
| */ |
| public static class DeviceIterator extends AbstractObjectIterator<KVDevice> { |
| |
| /** |
| * Constructor to create an iterator to iterate all the Devices |
| * in specified namespace. |
| * |
| * @param namespace namespace to iterate through |
| */ |
| public DeviceIterator(final String namespace) { |
| super(DataStoreClient.getClient() |
| .getTable(namespace + DEVICE_TABLE_SUFFIX), namespace); |
| } |
| |
| @Override |
| public KVDevice next() { |
| IKVEntry o = enumerator.next(); |
| KVDevice e = KVDevice.createFromKey(o.getKey(), namespace); |
| e.deserialize(o.getValue(), o.getVersion()); |
| return e; |
| } |
| } |
| |
| /** |
| * Gets the MAC address. |
| * |
| * @return MAC address |
| */ |
| public byte[] getMac() { |
| return mac.clone(); |
| } |
| |
| /** |
| * Gets the HostID. |
| * |
| * @return HostID |
| */ |
| public byte[] getId() { |
| return getKey(); |
| } |
| |
| /** |
| * Add a port to this Host's attachment points. |
| * |
| * @param portId PortID of the port which this Host is attached |
| */ |
| public void addPortId(final byte[] portId) { |
| portIds.add(portId.clone()); |
| } |
| |
| /** |
| * Remove a port from this Host's attachment points. |
| * |
| * @param portId PortID to remove |
| */ |
| public void removePortId(final byte[] portId) { |
| portIds.remove(portId); |
| } |
| |
| /** |
| * Empty this Host's attachment points. |
| */ |
| public void emptyPortIds() { |
| portIds.clear(); |
| } |
| |
| /** |
| * Add ports to this Host's attachment points. |
| * |
| * @param newPortIds PortIDs which this Host is attached |
| */ |
| public void addAllToPortIds(final Collection<byte[]> newPortIds) { |
| // TODO: Should we copy each portId, or reference is OK. |
| portIds.addAll(newPortIds); |
| } |
| |
| /** |
| * Gets all the PortIDs which this Host is attached. |
| * |
| * @return Unmodifiable Set view of all the PortIds; |
| */ |
| public Set<byte[]> getAllPortIds() { |
| return Collections.unmodifiableSet(portIds); |
| } |
| |
| @Override |
| public byte[] serialize() { |
| Map<Object, Object> map = getPropertyMap(); |
| |
| DeviceProperty.Builder dev = DeviceProperty.newBuilder(); |
| |
| dev.setMac(ByteString.copyFrom(mac)); |
| for (byte[] port : portIds) { |
| dev.addPortIds(ByteString.copyFrom(port)); |
| } |
| |
| if (!map.isEmpty()) { |
| byte[] propMaps = serializePropertyMap(DEVICE_KRYO.get(), map); |
| dev.setValue(ByteString.copyFrom(propMaps)); |
| } |
| |
| return dev.build().toByteArray(); |
| } |
| |
| @Override |
| protected boolean deserialize(final byte[] bytes) { |
| |
| try { |
| boolean success = true; |
| |
| DeviceProperty dev = DeviceProperty.parseFrom(bytes); |
| for (ByteString portId : dev.getPortIdsList()) { |
| this.addPortId(portId.toByteArray()); |
| } |
| byte[] props = dev.getValue().toByteArray(); |
| success &= deserializePropertyMap(DEVICE_KRYO.get(), props); |
| return success; |
| } catch (InvalidProtocolBufferException e) { |
| log.error("Deserializing Host: " + this + " failed.", e); |
| return false; |
| } |
| } |
| |
| @Override |
| public String toString() { |
| // TODO output all properties? |
| return "[" + this.getClass().getSimpleName() |
| + " " + ByteArrayUtil.toHexStringBuilder(mac, ":") + "]"; |
| } |
| } |