| package org.onlab.onos.net.trivial.impl; |
| |
| import org.onlab.onos.net.DefaultDevice; |
| import org.onlab.onos.net.Device; |
| import org.onlab.onos.net.DeviceId; |
| import org.onlab.onos.net.MastershipRole; |
| import org.onlab.onos.net.Port; |
| import org.onlab.onos.net.PortNumber; |
| import org.onlab.onos.net.device.DeviceDescription; |
| import org.onlab.onos.net.device.DeviceEvent; |
| import org.onlab.onos.net.device.PortDescription; |
| import org.onlab.onos.net.provider.ProviderId; |
| |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Objects; |
| import java.util.Set; |
| import java.util.concurrent.ConcurrentHashMap; |
| |
| import static com.google.common.base.Preconditions.checkArgument; |
| import static org.onlab.onos.net.device.DeviceEvent.Type.DEVICE_AVAILABILITY_CHANGED; |
| import static org.onlab.onos.net.device.DeviceEvent.Type.DEVICE_MASTERSHIP_CHANGED; |
| import static org.onlab.onos.net.device.DeviceEvent.Type.DEVICE_REMOVED; |
| |
| /** |
| * Manages inventory of infrastructure devices. |
| */ |
| class SimpleDeviceStore { |
| |
| private final Map<DeviceId, DefaultDevice> devices = new ConcurrentHashMap<>(); |
| private final Map<DeviceId, MastershipRole> roles = new ConcurrentHashMap<>(); |
| private final Set<DeviceId> availableDevices = new HashSet<>(); |
| |
| /** |
| * Returns an iterable collection of all devices known to the system. |
| * |
| * @return device collection |
| */ |
| Iterable<Device> getDevices() { |
| return Collections.unmodifiableSet(new HashSet<Device>(devices.values())); |
| } |
| |
| /** |
| * Returns the device with the specified identifier. |
| * |
| * @param deviceId device identifier |
| * @return device |
| */ |
| Device getDevice(DeviceId deviceId) { |
| return devices.get(deviceId); |
| } |
| |
| /** |
| * Creates a new infrastructure device, or updates an existing one using |
| * the supplied device description. |
| * |
| * @param providerId provider identifier |
| * @param deviceId device identifier |
| * @param deviceDescription device description |
| * @return ready to send event describing what occurred; null if no change |
| */ |
| DeviceEvent createOrUpdateDevice(ProviderId providerId, DeviceId deviceId, |
| DeviceDescription deviceDescription) { |
| DefaultDevice device = devices.get(deviceId); |
| if (device == null) { |
| return createDevice(providerId, deviceId, deviceDescription); |
| } |
| return updateDevice(providerId, device, deviceDescription); |
| } |
| |
| // Creates the device and returns the appropriate event if necessary. |
| private DeviceEvent createDevice(ProviderId providerId, DeviceId deviceId, |
| DeviceDescription desc) { |
| DefaultDevice device = new DefaultDevice(providerId, deviceId, desc.type(), |
| desc.manufacturer(), |
| desc.hwVersion(), desc.swVersion(), |
| desc.serialNumber()); |
| synchronized (this) { |
| devices.put(deviceId, device); |
| availableDevices.add(deviceId); |
| } |
| return new DeviceEvent(DeviceEvent.Type.DEVICE_ADDED, device); |
| } |
| |
| // Updates the device and returns the appropriate event if necessary. |
| private DeviceEvent updateDevice(ProviderId providerId, DefaultDevice device, |
| DeviceDescription desc) { |
| // We allow only certain attributes to trigger update |
| if (!Objects.equals(device.hwVersion(), desc.hwVersion()) || |
| !Objects.equals(device.swVersion(), desc.swVersion())) { |
| DefaultDevice updated = new DefaultDevice(providerId, device.id(), |
| desc.type(), |
| desc.manufacturer(), |
| desc.hwVersion(), |
| desc.swVersion(), |
| desc.serialNumber()); |
| synchronized (this) { |
| devices.put(device.id(), updated); |
| availableDevices.add(device.id()); |
| } |
| return new DeviceEvent(DeviceEvent.Type.DEVICE_UPDATED, device); |
| } |
| |
| // Otherwise merely attempt to change availability |
| synchronized (this) { |
| boolean added = availableDevices.add(device.id()); |
| return added ? new DeviceEvent(DEVICE_AVAILABILITY_CHANGED, device) : null; |
| } |
| } |
| |
| /** |
| * Removes the specified infrastructure device. |
| * |
| * @param deviceId device identifier |
| * @return ready to send event describing what occurred; null if no change |
| */ |
| DeviceEvent markOffline(DeviceId deviceId) { |
| synchronized (this) { |
| Device device = devices.get(deviceId); |
| checkArgument(device != null, "Device with ID %s is not found", deviceId); |
| boolean removed = availableDevices.remove(deviceId); |
| return removed ? new DeviceEvent(DEVICE_AVAILABILITY_CHANGED, device) : null; |
| } |
| } |
| |
| /** |
| * Updates the ports of the specified infrastructure device using the given |
| * list of port descriptions. The list is assumed to be comprehensive. |
| * |
| * @param deviceId device identifier |
| * @param portDescriptions list of port descriptions |
| * @return ready to send events describing what occurred; empty list if no change |
| */ |
| List<DeviceEvent> updatePorts(DeviceId deviceId, |
| List<PortDescription> portDescriptions) { |
| return new ArrayList<>(); |
| } |
| |
| /** |
| * Updates the port status of the specified infrastructure device using the |
| * given port description. |
| * |
| * @param deviceId device identifier |
| * @param portDescription port description |
| * @return ready to send event describing what occurred; null if no change |
| */ |
| DeviceEvent updatePortStatus(DeviceId deviceId, |
| PortDescription portDescription) { |
| return null; |
| } |
| |
| /** |
| * Returns the list of ports that belong to the specified device. |
| * |
| * @param deviceId device identifier |
| * @return list of device ports |
| */ |
| List<Port> getPorts(DeviceId deviceId) { |
| return null; |
| } |
| |
| /** |
| * Returns the specified device port. |
| * |
| * @param deviceId device identifier |
| * @param portNumber port number |
| * @return device port |
| */ |
| Port getPort(DeviceId deviceId, PortNumber portNumber) { |
| return null; |
| } |
| |
| /** |
| * Returns the mastership role determined for this device. |
| * |
| * @param deviceId device identifier |
| * @return mastership role |
| */ |
| MastershipRole getRole(DeviceId deviceId) { |
| MastershipRole role = roles.get(deviceId); |
| return role != null ? role : MastershipRole.NONE; |
| } |
| |
| /** |
| * Administratively sets the role of the specified device. |
| * |
| * @param deviceId device identifier |
| * @param role mastership role to apply |
| * @return mastership role change event or null if no change |
| */ |
| DeviceEvent setRole(DeviceId deviceId, MastershipRole role) { |
| synchronized (this) { |
| Device device = getDevice(deviceId); |
| checkArgument(device != null, "Device with ID %s not found"); |
| MastershipRole oldRole = roles.put(deviceId, role); |
| return oldRole == role ? null : new DeviceEvent(DEVICE_MASTERSHIP_CHANGED, device); |
| } |
| } |
| |
| /** |
| * Administratively removes the specified device from the store. |
| * |
| * @param deviceId device to be removed |
| */ |
| DeviceEvent removeDevice(DeviceId deviceId) { |
| synchronized (this) { |
| roles.remove(deviceId); |
| Device device = devices.remove(deviceId); |
| return device != null ? new DeviceEvent(DEVICE_REMOVED, device) : null; |
| } |
| } |
| } |