Charles Chan | 41f5ec0 | 2016-06-13 18:54:31 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2016-present Open Networking Laboratory |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package org.onosproject.segmentrouting; |
| 18 | |
| 19 | import com.google.common.collect.ImmutableSet; |
| 20 | import org.onlab.packet.Ip4Prefix; |
| 21 | import org.onlab.packet.MacAddress; |
| 22 | import org.onlab.packet.VlanId; |
| 23 | import org.onosproject.net.ConnectPoint; |
| 24 | import org.onosproject.net.DefaultHost; |
| 25 | import org.onosproject.net.DeviceId; |
| 26 | import org.onosproject.net.Host; |
| 27 | import org.onosproject.net.HostId; |
| 28 | import org.onosproject.net.HostLocation; |
| 29 | import org.onosproject.net.provider.ProviderId; |
| 30 | import org.opencord.cordconfig.CordConfigEvent; |
| 31 | import org.opencord.cordconfig.access.AccessAgentData; |
| 32 | import org.slf4j.Logger; |
| 33 | import org.slf4j.LoggerFactory; |
| 34 | |
| 35 | import java.util.Optional; |
| 36 | |
| 37 | /** |
| 38 | * Handles access agent config event which is required for CORD integration. |
| 39 | */ |
| 40 | public class CordConfigHandler { |
| 41 | private static Logger log = LoggerFactory.getLogger(CordConfigHandler.class); |
| 42 | private final SegmentRoutingManager srManager; |
| 43 | |
| 44 | /** |
| 45 | * Constructs the CordConfigHandler. |
| 46 | * |
| 47 | * @param srManager Segment Routing manager |
| 48 | */ |
| 49 | public CordConfigHandler(SegmentRoutingManager srManager) { |
| 50 | this.srManager = srManager; |
| 51 | } |
| 52 | |
| 53 | /** |
| 54 | * Read initial access agent config for given device. |
| 55 | * |
| 56 | * @param deviceId ID of the device to be initialized |
| 57 | */ |
| 58 | public void init(DeviceId deviceId) { |
| 59 | // Try to read access agent config |
| 60 | Optional<AccessAgentData> accessAgent = |
| 61 | srManager.cordConfigService.getAccessAgent(deviceId); |
| 62 | |
| 63 | if (!accessAgent.isPresent()) { |
| 64 | log.debug("No access agent config on {}. Skip.", deviceId); |
| 65 | return; |
| 66 | } |
| 67 | |
| 68 | processAccessAgentAdded(accessAgent.get()); |
| 69 | } |
| 70 | |
| 71 | // TODO javadoc |
| 72 | protected void processAccessAgentAddedEvent(CordConfigEvent event) { |
| 73 | log.debug("processAccessAgentAdded: {}, {}", event.subject(), event.prevSubject()); |
| 74 | processAccessAgentAdded((AccessAgentData) event.subject()); |
| 75 | } |
| 76 | |
| 77 | protected void processAccessAgentUpdatedEvent(CordConfigEvent event) { |
| 78 | log.debug("processAccessAgentUpdated: {}, {}", event.subject(), event.prevSubject()); |
| 79 | processAccessAgentRemoved((AccessAgentData) event.prevSubject()); |
| 80 | processAccessAgentAdded((AccessAgentData) event.subject()); |
| 81 | } |
| 82 | |
| 83 | protected void processAccessAgentRemovedEvent(CordConfigEvent event) { |
| 84 | log.debug("processAccessAgentRemoved: {}, {}", event.subject(), event.prevSubject()); |
| 85 | processAccessAgentRemoved((AccessAgentData) event.prevSubject()); |
| 86 | } |
| 87 | |
| 88 | protected void processAccessAgentAdded(AccessAgentData accessAgentData) { |
| 89 | if (!srManager.mastershipService.isLocalMaster(accessAgentData.deviceId())) { |
| 90 | log.debug("Not the master of {}. Abort.", accessAgentData.deviceId()); |
| 91 | return; |
| 92 | } |
| 93 | |
| 94 | // Do not proceed if vtn location is missing |
| 95 | if (!accessAgentData.getVtnLocation().isPresent()) { |
| 96 | log.warn("accessAgentData does not contain vtn location. Abort."); |
| 97 | return; |
| 98 | } |
| 99 | |
| 100 | MacAddress agentMac = accessAgentData.getAgentMac(); |
| 101 | ConnectPoint agentLocation = accessAgentData.getVtnLocation().get(); |
| 102 | |
| 103 | // Do not proceed if agent port doesn't have subnet configured |
| 104 | Ip4Prefix agentSubnet = srManager.deviceConfiguration |
| 105 | .getPortSubnet(agentLocation.deviceId(), agentLocation.port()); |
| 106 | if (agentSubnet == null) { |
| 107 | log.warn("Agent port does not have subnet configuration. Abort."); |
| 108 | return; |
| 109 | } |
| 110 | |
| 111 | // Add host information for agent |
| 112 | log.info("push host info for agent {}", agentMac); |
| 113 | srManager.hostHandler.processHostAdded(createHost(agentMac, agentLocation)); |
| 114 | |
| 115 | accessAgentData.getOltMacInfo().forEach((connectPoint, macAddress) -> { |
| 116 | // Do not proceed if olt port has subnet configured |
| 117 | Ip4Prefix oltSubnet = srManager.deviceConfiguration |
| 118 | .getPortSubnet(connectPoint.deviceId(), connectPoint.port()); |
| 119 | if (oltSubnet != null) { |
| 120 | log.warn("OLT port has subnet configuration. Abort."); |
| 121 | return; |
| 122 | } |
| 123 | |
| 124 | // Add olt to the subnet of agent |
| 125 | log.info("push subnet for olt {}", agentSubnet); |
| 126 | srManager.deviceConfiguration.addSubnet(connectPoint, agentSubnet); |
| 127 | srManager.routingRulePopulator.populateRouterMacVlanFilters(connectPoint.deviceId()); |
| 128 | |
| 129 | // Add host information for olt |
| 130 | log.info("push host info for olt {}", macAddress); |
| 131 | srManager.hostHandler.processHostAdded(createHost(macAddress, connectPoint)); |
| 132 | }); |
| 133 | } |
| 134 | |
| 135 | protected void processAccessAgentRemoved(AccessAgentData accessAgentData) { |
| 136 | if (!srManager.mastershipService.isLocalMaster(accessAgentData.deviceId())) { |
| 137 | log.debug("Not the master of {}. Abort.", accessAgentData.deviceId()); |
| 138 | return; |
| 139 | } |
| 140 | |
| 141 | // Do not proceed if vtn location is missing |
| 142 | if (!accessAgentData.getVtnLocation().isPresent()) { |
| 143 | log.warn("accessAgentData does not contain vtn location. Abort."); |
| 144 | return; |
| 145 | } |
| 146 | |
| 147 | MacAddress agentMac = accessAgentData.getAgentMac(); |
| 148 | ConnectPoint agentLocation = accessAgentData.getVtnLocation().get(); |
| 149 | |
| 150 | // Do not proceed if olt port doesn't have subnet configured |
| 151 | Ip4Prefix agentSubnet = srManager.deviceConfiguration |
| 152 | .getPortSubnet(agentLocation.deviceId(), agentLocation.port()); |
| 153 | if (agentSubnet == null) { |
| 154 | log.warn("Agent port does not have subnet configuration. Abort."); |
| 155 | return; |
| 156 | } |
| 157 | |
| 158 | // Remove host information for agent |
| 159 | log.info("delete host info for agent {}", agentMac); |
| 160 | srManager.hostHandler.processHostRemoved(createHost(agentMac, agentLocation)); |
| 161 | |
| 162 | accessAgentData.getOltMacInfo().forEach((connectPoint, macAddress) -> { |
| 163 | // Do not proceed if agent port doesn't have subnet configured |
| 164 | Ip4Prefix oltSubnet = srManager.deviceConfiguration |
| 165 | .getPortSubnet(connectPoint.deviceId(), connectPoint.port()); |
| 166 | if (oltSubnet == null) { |
| 167 | log.warn("OLT port does not have subnet configuration. Abort."); |
| 168 | return; |
| 169 | } |
| 170 | |
| 171 | // Remove host information for olt |
| 172 | log.info("delete host info for olt {}", macAddress); |
| 173 | srManager.hostHandler.processHostRemoved(createHost(macAddress, connectPoint)); |
| 174 | |
| 175 | // Remove olt to the subnet of agent |
| 176 | log.info("delete subnet for olt {}", agentSubnet); |
| 177 | srManager.deviceConfiguration.removeSubnet(connectPoint, agentSubnet); |
| 178 | srManager.routingRulePopulator.populateRouterMacVlanFilters(connectPoint.deviceId()); |
| 179 | }); |
| 180 | } |
| 181 | |
| 182 | private Host createHost(MacAddress macAddress, ConnectPoint location) { |
| 183 | return new DefaultHost( |
| 184 | new ProviderId("host", "org.onosproject.segmentrouting"), |
| 185 | HostId.hostId(macAddress), |
| 186 | macAddress, |
| 187 | VlanId.NONE, |
| 188 | new HostLocation(location, System.currentTimeMillis()), |
| 189 | ImmutableSet.of()); |
| 190 | } |
| 191 | } |