SureshBR | 25058b7 | 2015-08-13 13:05:06 +0530 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2015 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 | package org.onosproject.pcep.controller.impl; |
| 17 | |
SureshBR | 25058b7 | 2015-08-13 13:05:06 +0530 | [diff] [blame] | 18 | import java.util.Collection; |
| 19 | import java.util.Collections; |
| 20 | import java.util.HashSet; |
| 21 | import java.util.Set; |
| 22 | import java.util.concurrent.ConcurrentHashMap; |
SureshBR | 25058b7 | 2015-08-13 13:05:06 +0530 | [diff] [blame] | 23 | |
| 24 | import org.apache.felix.scr.annotations.Activate; |
| 25 | import org.apache.felix.scr.annotations.Component; |
| 26 | import org.apache.felix.scr.annotations.Deactivate; |
| 27 | import org.apache.felix.scr.annotations.Service; |
SureshBR | 25058b7 | 2015-08-13 13:05:06 +0530 | [diff] [blame] | 28 | import org.onosproject.pcep.controller.PccId; |
| 29 | import org.onosproject.pcep.controller.PcepClient; |
| 30 | import org.onosproject.pcep.controller.PcepClientController; |
| 31 | import org.onosproject.pcep.controller.PcepClientListener; |
| 32 | import org.onosproject.pcep.controller.PcepEventListener; |
| 33 | import org.onosproject.pcep.controller.driver.PcepAgent; |
| 34 | import org.onosproject.pcepio.protocol.PcepMessage; |
| 35 | import org.slf4j.Logger; |
| 36 | import org.slf4j.LoggerFactory; |
| 37 | |
| 38 | import com.google.common.collect.Sets; |
| 39 | |
Phanendra Manda | 51fb9c2 | 2015-09-01 16:17:41 +0530 | [diff] [blame] | 40 | /** |
| 41 | * Implementation of PCEP client controller. |
| 42 | */ |
SureshBR | 25058b7 | 2015-08-13 13:05:06 +0530 | [diff] [blame] | 43 | @Component(immediate = true) |
| 44 | @Service |
| 45 | public class PcepClientControllerImpl implements PcepClientController { |
| 46 | |
| 47 | private static final Logger log = LoggerFactory.getLogger(PcepClientControllerImpl.class); |
| 48 | |
SureshBR | 25058b7 | 2015-08-13 13:05:06 +0530 | [diff] [blame] | 49 | protected ConcurrentHashMap<PccId, PcepClient> connectedClients = |
Sho SHIMIZU | 9b8274c | 2015-09-04 15:54:24 -0700 | [diff] [blame] | 50 | new ConcurrentHashMap<>(); |
SureshBR | 25058b7 | 2015-08-13 13:05:06 +0530 | [diff] [blame] | 51 | |
| 52 | protected PcepClientAgent agent = new PcepClientAgent(); |
| 53 | protected Set<PcepClientListener> pcepClientListener = new HashSet<>(); |
| 54 | |
| 55 | protected Set<PcepEventListener> pcepEventListener = Sets.newHashSet(); |
| 56 | |
| 57 | private final Controller ctrl = new Controller(); |
| 58 | |
| 59 | @Activate |
| 60 | public void activate() { |
| 61 | ctrl.start(agent); |
| 62 | log.info("Started"); |
| 63 | } |
| 64 | |
| 65 | @Deactivate |
| 66 | public void deactivate() { |
| 67 | // Close all connected clients |
| 68 | closeConnectedClients(); |
| 69 | ctrl.stop(); |
| 70 | log.info("Stopped"); |
| 71 | } |
| 72 | |
| 73 | @Override |
| 74 | public Collection<PcepClient> getClients() { |
| 75 | return connectedClients.values(); |
| 76 | } |
| 77 | |
| 78 | @Override |
| 79 | public PcepClient getClient(PccId pccId) { |
| 80 | return connectedClients.get(pccId); |
| 81 | } |
| 82 | |
| 83 | @Override |
| 84 | public void addListener(PcepClientListener listener) { |
| 85 | if (!pcepClientListener.contains(listener)) { |
| 86 | this.pcepClientListener.add(listener); |
| 87 | } |
| 88 | } |
| 89 | |
| 90 | @Override |
| 91 | public void removeListener(PcepClientListener listener) { |
| 92 | this.pcepClientListener.remove(listener); |
| 93 | } |
| 94 | |
| 95 | @Override |
| 96 | public void addEventListener(PcepEventListener listener) { |
| 97 | pcepEventListener.add(listener); |
| 98 | } |
| 99 | |
| 100 | @Override |
| 101 | public void removeEventListener(PcepEventListener listener) { |
| 102 | pcepEventListener.remove(listener); |
| 103 | } |
| 104 | |
| 105 | @Override |
| 106 | public void writeMessage(PccId pccId, PcepMessage msg) { |
| 107 | this.getClient(pccId).sendMessage(msg); |
| 108 | } |
| 109 | |
| 110 | @Override |
| 111 | public void processClientMessage(PccId pccId, PcepMessage msg) { |
| 112 | PcepClient pc = getClient(pccId); |
| 113 | |
| 114 | switch (msg.getType()) { |
| 115 | case NONE: |
| 116 | break; |
| 117 | case OPEN: |
| 118 | break; |
| 119 | case KEEP_ALIVE: |
| 120 | break; |
| 121 | case PATH_COMPUTATION_REQUEST: |
| 122 | break; |
| 123 | case PATH_COMPUTATION_REPLY: |
| 124 | break; |
| 125 | case NOTIFICATION: |
| 126 | break; |
| 127 | case ERROR: |
| 128 | break; |
| 129 | case CLOSE: |
| 130 | log.info("Sending Close Message to {" + pccId.toString() + "}"); |
| 131 | pc.sendMessage(Collections.singletonList(pc.factory().buildCloseMsg().build())); |
| 132 | //now disconnect client |
| 133 | pc.disconnectClient(); |
| 134 | break; |
| 135 | case REPORT: |
| 136 | for (PcepEventListener l : pcepEventListener) { |
| 137 | l.handleMessage(pccId, msg); |
| 138 | } |
| 139 | break; |
| 140 | case UPDATE: |
| 141 | for (PcepEventListener l : pcepEventListener) { |
| 142 | l.handleMessage(pccId, msg); |
| 143 | } |
| 144 | break; |
| 145 | case INITIATE: |
| 146 | for (PcepEventListener l : pcepEventListener) { |
| 147 | l.handleMessage(pccId, msg); |
| 148 | } |
| 149 | break; |
| 150 | case LABEL_UPDATE: |
| 151 | break; |
| 152 | case MAX: |
| 153 | break; |
| 154 | case END: |
| 155 | break; |
| 156 | default: |
| 157 | break; |
| 158 | } |
| 159 | } |
| 160 | |
| 161 | @Override |
| 162 | public void closeConnectedClients() { |
| 163 | PcepClient pc; |
| 164 | for (PccId id : connectedClients.keySet()) { |
| 165 | pc = getClient(id); |
| 166 | pc.disconnectClient(); |
| 167 | } |
| 168 | } |
| 169 | |
| 170 | /** |
| 171 | * Implementation of an Pcep Agent which is responsible for |
| 172 | * keeping track of connected clients and the state in which |
| 173 | * they are. |
| 174 | */ |
| 175 | public class PcepClientAgent implements PcepAgent { |
| 176 | |
| 177 | private final Logger log = LoggerFactory.getLogger(PcepClientAgent.class); |
SureshBR | 25058b7 | 2015-08-13 13:05:06 +0530 | [diff] [blame] | 178 | |
| 179 | @Override |
| 180 | public boolean addConnectedClient(PccId pccId, PcepClient pc) { |
| 181 | |
| 182 | if (connectedClients.get(pccId) != null) { |
| 183 | log.error("Trying to add connectedClient but found a previous " |
| 184 | + "value for pcc ip: {}", pccId.toString()); |
| 185 | return false; |
| 186 | } else { |
| 187 | log.debug("Added Client {}", pccId.toString()); |
| 188 | connectedClients.put(pccId, pc); |
| 189 | for (PcepClientListener l : pcepClientListener) { |
| 190 | l.clientConnected(pccId); |
| 191 | } |
| 192 | return true; |
| 193 | } |
| 194 | } |
| 195 | |
| 196 | @Override |
| 197 | public boolean validActivation(PccId pccId) { |
| 198 | if (connectedClients.get(pccId) == null) { |
| 199 | log.error("Trying to activate client but is not in " |
| 200 | + "connected client: pccIp {}. Aborting ..", pccId.toString()); |
| 201 | return false; |
| 202 | } |
| 203 | |
| 204 | return true; |
| 205 | } |
| 206 | |
| 207 | @Override |
| 208 | public void removeConnectedClient(PccId pccId) { |
| 209 | |
| 210 | connectedClients.remove(pccId); |
| 211 | for (PcepClientListener l : pcepClientListener) { |
| 212 | log.warn("removal for {}", pccId.toString()); |
| 213 | l.clientDisconnected(pccId); |
| 214 | } |
| 215 | } |
| 216 | |
| 217 | @Override |
| 218 | public void processPcepMessage(PccId pccId, PcepMessage m) { |
| 219 | processClientMessage(pccId, m); |
| 220 | } |
| 221 | } |
| 222 | } |