| /* |
| * Copyright 2015-present 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.provider.bgp.cfg.impl; |
| |
| 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.onosproject.bgp.controller.BgpCfg; |
| import org.onosproject.bgp.controller.BgpPeerCfg; |
| import org.onosproject.core.ApplicationId; |
| import org.onosproject.core.CoreService; |
| import org.onosproject.net.config.ConfigFactory; |
| import org.onosproject.net.config.NetworkConfigEvent; |
| import org.onosproject.net.config.NetworkConfigListener; |
| import org.onosproject.net.config.NetworkConfigRegistry; |
| import org.onosproject.net.config.NetworkConfigService; |
| import org.onosproject.net.config.basics.SubjectFactories; |
| import org.onosproject.net.provider.AbstractProvider; |
| import org.onosproject.net.provider.ProviderId; |
| import org.onosproject.bgp.controller.BgpController; |
| import org.slf4j.Logger; |
| import org.osgi.service.component.ComponentContext; |
| |
| import java.util.ArrayList; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.TreeMap; |
| |
| import static org.slf4j.LoggerFactory.getLogger; |
| |
| /** |
| * BGP config provider to validate and populate the configuration. |
| */ |
| @Component(immediate = true) |
| public class BgpCfgProvider extends AbstractProvider { |
| |
| private static final Logger log = getLogger(BgpCfgProvider.class); |
| |
| static final String PROVIDER_ID = "org.onosproject.provider.bgp.cfg"; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected BgpController bgpController; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected CoreService coreService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected NetworkConfigRegistry configRegistry; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected NetworkConfigService configService; |
| |
| private final ConfigFactory configFactory = |
| new ConfigFactory(SubjectFactories.APP_SUBJECT_FACTORY, BgpAppConfig.class, "bgpapp") { |
| @Override |
| public BgpAppConfig createConfig() { |
| return new BgpAppConfig(); |
| } |
| }; |
| |
| private final NetworkConfigListener configListener = new InternalConfigListener(); |
| |
| private ApplicationId appId; |
| |
| /** |
| * Creates a Bgp config provider. |
| */ |
| public BgpCfgProvider() { |
| super(new ProviderId("bgp", PROVIDER_ID)); |
| } |
| |
| @Activate |
| public void activate(ComponentContext context) { |
| appId = coreService.registerApplication(PROVIDER_ID); |
| configService.addListener(configListener); |
| configRegistry.registerConfigFactory(configFactory); |
| readConfiguration(); |
| log.info("BGP cfg provider started"); |
| } |
| |
| @Deactivate |
| public void deactivate(ComponentContext context) { |
| configRegistry.unregisterConfigFactory(configFactory); |
| configService.removeListener(configListener); |
| } |
| |
| void setBgpController(BgpController bgpController) { |
| this.bgpController = bgpController; |
| } |
| |
| /** |
| * Reads the configuration and set it to the BGP-LS south bound protocol. |
| */ |
| private void readConfiguration() { |
| BgpCfg bgpConfig = null; |
| List<BgpAppConfig.BgpPeerConfig> nodes; |
| bgpConfig = bgpController.getConfig(); |
| BgpAppConfig config = configRegistry.getConfig(appId, BgpAppConfig.class); |
| |
| if (config == null) { |
| log.warn("No configuration found"); |
| return; |
| } |
| |
| /*Set the configuration */ |
| bgpConfig.setRouterId(config.routerId()); |
| bgpConfig.setAsNumber(config.localAs()); |
| bgpConfig.setLsCapability(config.lsCapability()); |
| bgpConfig.setHoldTime(config.holdTime()); |
| bgpConfig.setMaxSession(config.maxSession()); |
| bgpConfig.setLargeASCapability(config.largeAsCapability()); |
| |
| if (config.flowSpecCapability().equals("IPV4")) { |
| bgpConfig.setFlowSpecCapability(BgpCfg.FlowSpec.IPV4); |
| } else if (config.flowSpecCapability().equals("VPNV4")) { |
| bgpConfig.setFlowSpecCapability(BgpCfg.FlowSpec.VPNV4); |
| } else if (config.flowSpecCapability().equals("IPV4_VPNV4")) { |
| bgpConfig.setFlowSpecCapability(BgpCfg.FlowSpec.IPV4_VPNV4); |
| } else { |
| bgpConfig.setFlowSpecCapability(BgpCfg.FlowSpec.NONE); |
| } |
| bgpConfig.setFlowSpecRpdCapability(config.rpdCapability()); |
| |
| nodes = config.bgpPeer(); |
| for (int i = 0; i < nodes.size(); i++) { |
| String connectMode = nodes.get(i).connectMode(); |
| bgpConfig.addPeer(nodes.get(i).hostname(), nodes.get(i).asNumber(), nodes.get(i).holdTime()); |
| if (connectMode.equals(BgpAppConfig.PEER_CONNECT_ACTIVE)) { |
| bgpConfig.connectPeer(nodes.get(i).hostname()); |
| } |
| } |
| } |
| |
| /** |
| * Read the configuration and update it to the BGP-LS south bound protocol. |
| */ |
| private void updateConfiguration() { |
| BgpCfg bgpConfig = null; |
| List<BgpAppConfig.BgpPeerConfig> nodes; |
| TreeMap<String, BgpPeerCfg> bgpPeerTree; |
| bgpConfig = bgpController.getConfig(); |
| BgpPeerCfg peer = null; |
| BgpAppConfig config = configRegistry.getConfig(appId, BgpAppConfig.class); |
| |
| if (config == null) { |
| log.warn("No configuration found"); |
| return; |
| } |
| |
| |
| /* Update the self configuration */ |
| if (bgpController.connectedPeerCount() != 0) { |
| //TODO: If connections already exist, disconnect |
| bgpController.closeConnectedPeers(); |
| } |
| bgpConfig.setRouterId(config.routerId()); |
| bgpConfig.setAsNumber(config.localAs()); |
| bgpConfig.setLsCapability(config.lsCapability()); |
| bgpConfig.setHoldTime(config.holdTime()); |
| bgpConfig.setMaxSession(config.maxSession()); |
| bgpConfig.setLargeASCapability(config.largeAsCapability()); |
| |
| if (config.flowSpecCapability().equals("IPV4")) { |
| bgpConfig.setFlowSpecCapability(BgpCfg.FlowSpec.IPV4); |
| } else if (config.flowSpecCapability().equals("VPNV4")) { |
| bgpConfig.setFlowSpecCapability(BgpCfg.FlowSpec.VPNV4); |
| } else if (config.flowSpecCapability().equals("IPV4_VPNV4")) { |
| bgpConfig.setFlowSpecCapability(BgpCfg.FlowSpec.IPV4_VPNV4); |
| } else { |
| bgpConfig.setFlowSpecCapability(BgpCfg.FlowSpec.NONE); |
| } |
| bgpConfig.setFlowSpecRpdCapability(config.rpdCapability()); |
| |
| /* update the peer configuration */ |
| bgpPeerTree = bgpConfig.getPeerTree(); |
| if (bgpPeerTree.isEmpty()) { |
| log.info("There are no BGP peers to iterate"); |
| } else { |
| Set set = bgpPeerTree.entrySet(); |
| Iterator i = set.iterator(); |
| List<BgpPeerCfg> absPeerList = new ArrayList<BgpPeerCfg>(); |
| |
| boolean exists = false; |
| |
| while (i.hasNext()) { |
| Map.Entry me = (Map.Entry) i.next(); |
| peer = (BgpPeerCfg) me.getValue(); |
| |
| nodes = config.bgpPeer(); |
| for (int j = 0; j < nodes.size(); j++) { |
| String peerIp = nodes.get(j).hostname(); |
| if (peerIp.equals(peer.getPeerRouterId())) { |
| |
| if (bgpConfig.isPeerConnectable(peer.getPeerRouterId())) { |
| peer.setAsNumber(nodes.get(j).asNumber()); |
| peer.setHoldtime(nodes.get(j).holdTime()); |
| log.debug("Peer neighbor IP successfully modified :" + peer.getPeerRouterId()); |
| } else { |
| log.debug("Peer neighbor IP cannot be modified :" + peer.getPeerRouterId()); |
| } |
| |
| nodes.remove(j); |
| exists = true; |
| break; |
| } |
| } |
| |
| if (!exists) { |
| absPeerList.add(peer); |
| exists = false; |
| } |
| |
| if (peer.connectPeer() != null) { |
| peer.connectPeer().disconnectPeer(); |
| peer.setConnectPeer(null); |
| } |
| } |
| |
| /* Remove the absent nodes. */ |
| for (int j = 0; j < absPeerList.size(); j++) { |
| bgpConfig.removePeer(absPeerList.get(j).getPeerRouterId()); |
| } |
| } |
| |
| |
| nodes = config.bgpPeer(); |
| for (int i = 0; i < nodes.size(); i++) { |
| String connectMode = nodes.get(i).connectMode(); |
| bgpConfig.addPeer(nodes.get(i).hostname(), nodes.get(i).asNumber(), nodes.get(i).holdTime()); |
| if (connectMode.equals(BgpAppConfig.PEER_CONNECT_ACTIVE)) { |
| bgpConfig.connectPeer(nodes.get(i).hostname()); |
| } |
| } |
| |
| } |
| |
| /** |
| * BGP config listener to populate the configuration. |
| */ |
| private class InternalConfigListener implements NetworkConfigListener { |
| |
| @Override |
| public void event(NetworkConfigEvent event) { |
| if (!event.configClass().equals(BgpAppConfig.class)) { |
| return; |
| } |
| |
| switch (event.type()) { |
| case CONFIG_ADDED: |
| readConfiguration(); |
| break; |
| case CONFIG_UPDATED: |
| updateConfiguration(); |
| break; |
| case CONFIG_REMOVED: |
| default: |
| break; |
| } |
| } |
| } |
| } |