Avantika-Huawei | d1e36bd | 2016-05-26 12:47:16 +0530 | [diff] [blame^] | 1 | package org.onosproject.provider.pcep.packet.impl; |
| 2 | |
| 3 | import static org.slf4j.LoggerFactory.getLogger; |
| 4 | |
| 5 | import org.apache.felix.scr.annotations.Activate; |
| 6 | import org.apache.felix.scr.annotations.Component; |
| 7 | import org.apache.felix.scr.annotations.Deactivate; |
| 8 | import org.apache.felix.scr.annotations.Reference; |
| 9 | import org.apache.felix.scr.annotations.ReferenceCardinality; |
| 10 | import org.apache.felix.scr.annotations.Service; |
| 11 | import org.onlab.packet.Ethernet; |
| 12 | import org.onlab.packet.IPv4; |
| 13 | import org.onlab.packet.TCP; |
| 14 | import org.onosproject.net.AnnotationKeys; |
| 15 | import org.onosproject.net.ConnectPoint; |
| 16 | import org.onosproject.net.Device; |
| 17 | import org.onosproject.net.DeviceId; |
| 18 | import org.onosproject.net.PortNumber; |
| 19 | import org.onosproject.net.device.DeviceService; |
| 20 | import org.onosproject.net.packet.DefaultInboundPacket; |
| 21 | import org.onosproject.net.packet.DefaultPacketContext; |
| 22 | import org.onosproject.net.packet.InboundPacket; |
| 23 | import org.onosproject.net.packet.OutboundPacket; |
| 24 | import org.onosproject.net.packet.PacketProvider; |
| 25 | import org.onosproject.net.packet.PacketProviderRegistry; |
| 26 | import org.onosproject.net.packet.PacketProviderService; |
| 27 | import org.onosproject.net.provider.AbstractProvider; |
| 28 | import org.onosproject.net.provider.ProviderId; |
| 29 | import org.onosproject.pcep.controller.PccId; |
| 30 | import org.onosproject.pcep.controller.PcepClientController; |
| 31 | import org.onosproject.pcep.controller.PcepPacketListener; |
| 32 | import org.slf4j.Logger; |
| 33 | |
| 34 | /** |
| 35 | * Provider which uses an PCEP controller to process packets. |
| 36 | */ |
| 37 | @Component(immediate = true) |
| 38 | @Service |
| 39 | public class PcepPacketProvider extends AbstractProvider implements PacketProvider { |
| 40 | |
| 41 | private static final Logger log = getLogger(PcepPacketProvider.class); |
| 42 | static final String PROVIDER_ID = "org.onosproject.provider.packet.pcep"; |
| 43 | |
| 44 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 45 | protected PacketProviderRegistry packetProviderRegistry; |
| 46 | |
| 47 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 48 | protected PcepClientController pcepClientController; |
| 49 | |
| 50 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 51 | protected DeviceService deviceService; |
| 52 | |
| 53 | PacketProviderService packetProviderService; |
| 54 | |
| 55 | private InnerPacketProvider listener = new InnerPacketProvider(); |
| 56 | public static final String LSRID = "lsrId"; |
| 57 | public static final int PCEP_PORT = 4189; |
| 58 | |
| 59 | /** |
| 60 | * Creates a Packet provider. |
| 61 | */ |
| 62 | public PcepPacketProvider() { |
| 63 | super(new ProviderId("pcep", PROVIDER_ID)); |
| 64 | } |
| 65 | |
| 66 | @Activate |
| 67 | public void activate() { |
| 68 | packetProviderService = packetProviderRegistry.register(this); |
| 69 | pcepClientController.addPacketListener(listener); |
| 70 | log.info("Started"); |
| 71 | } |
| 72 | |
| 73 | @Deactivate |
| 74 | public void deactivate() { |
| 75 | packetProviderRegistry.unregister(this); |
| 76 | pcepClientController.removePacketListener(listener); |
| 77 | log.info("Stopped"); |
| 78 | } |
| 79 | |
| 80 | private class InnerPacketProvider implements PcepPacketListener { |
| 81 | @Override |
| 82 | public void sendPacketIn(PccId pccId) { |
| 83 | TCP tcp = new TCP(); |
| 84 | // Set the well known PCEP port. To be used to decide to process/discard the packet while processing. |
| 85 | tcp.setDestinationPort(PCEP_PORT); |
| 86 | |
| 87 | IPv4 ipv4 = new IPv4(); |
| 88 | ipv4.setProtocol(IPv4.PROTOCOL_TCP); |
| 89 | ipv4.setPayload(tcp); |
| 90 | |
| 91 | Ethernet eth = new Ethernet(); |
| 92 | eth.setEtherType(Ethernet.TYPE_IPV4); |
| 93 | eth.setPayload(ipv4); |
| 94 | |
| 95 | // Get lsrId of the PCEP client from the PCC ID. Session info is based on lsrID. |
| 96 | String lsrId = String.valueOf(pccId.ipAddress()); |
| 97 | DeviceId pccDeviceId = null; |
| 98 | |
| 99 | // Find PCC deviceID from lsrId stored as annotations |
| 100 | Iterable<Device> devices = deviceService.getAvailableDevices(); |
| 101 | for (Device dev : devices) { |
| 102 | if ("L3".equals(dev.annotations().value(AnnotationKeys.TYPE)) |
| 103 | && lsrId.equals(dev.annotations().value(LSRID))) { |
| 104 | pccDeviceId = dev.id(); |
| 105 | break; |
| 106 | } |
| 107 | } |
| 108 | |
| 109 | if (pccDeviceId == null) { |
| 110 | return; |
| 111 | } |
| 112 | |
| 113 | InboundPacket inPkt = new DefaultInboundPacket(new ConnectPoint(pccDeviceId, |
| 114 | PortNumber.portNumber(PCEP_PORT)), |
| 115 | eth, null); |
| 116 | |
| 117 | packetProviderService.processPacket(new PcepPacketContext(inPkt, null)); |
| 118 | } |
| 119 | } |
| 120 | |
| 121 | // Minimal PacketContext to make core and applications happy. |
| 122 | private final class PcepPacketContext extends DefaultPacketContext { |
| 123 | private PcepPacketContext(InboundPacket inPkt, OutboundPacket outPkt) { |
| 124 | super(System.currentTimeMillis(), inPkt, outPkt, false); |
| 125 | } |
| 126 | |
| 127 | @Override |
| 128 | public void send() { |
| 129 | // We don't send anything out. |
| 130 | return; |
| 131 | } |
| 132 | } |
| 133 | |
| 134 | @Override |
| 135 | public void emit(OutboundPacket packet) { |
| 136 | // Nothing to emit |
| 137 | return; |
| 138 | |
| 139 | } |
| 140 | } |