samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 1 | /* |
Brian O'Connor | 5ab426f | 2016-04-09 01:19:45 -0700 | [diff] [blame^] | 2 | * Copyright 2015-present Open Networking Laboratory |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 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.dhcp.impl; |
| 17 | |
| 18 | import com.google.common.collect.ImmutableSet; |
| 19 | import org.apache.felix.scr.annotations.Activate; |
| 20 | import org.apache.felix.scr.annotations.Component; |
| 21 | import org.apache.felix.scr.annotations.Deactivate; |
| 22 | import org.apache.felix.scr.annotations.Reference; |
| 23 | import org.apache.felix.scr.annotations.ReferenceCardinality; |
| 24 | import org.apache.felix.scr.annotations.Service; |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 25 | import org.onlab.packet.Ip4Address; |
| 26 | import org.onlab.packet.MacAddress; |
| 27 | import org.onlab.util.KryoNamespace; |
Thomas Vachuska | a1da42e | 2015-09-09 00:45:22 -0700 | [diff] [blame] | 28 | import org.onosproject.dhcp.DhcpStore; |
| 29 | import org.onosproject.dhcp.IpAssignment; |
samanwita pal | 2a31340 | 2015-09-14 16:03:22 -0700 | [diff] [blame] | 30 | import org.onosproject.net.HostId; |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 31 | import org.onosproject.store.serializers.KryoNamespaces; |
| 32 | import org.onosproject.store.service.ConsistentMap; |
| 33 | import org.onosproject.store.service.DistributedSet; |
| 34 | import org.onosproject.store.service.Serializer; |
| 35 | import org.onosproject.store.service.StorageService; |
| 36 | import org.onosproject.store.service.Versioned; |
| 37 | import org.slf4j.Logger; |
| 38 | import org.slf4j.LoggerFactory; |
| 39 | |
| 40 | import java.util.Date; |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 41 | import java.util.Map; |
daniel | cd9deed | 2015-10-30 17:16:16 +0900 | [diff] [blame] | 42 | import java.util.List; |
| 43 | import java.util.HashMap; |
samanwita pal | 0bff430 | 2015-09-15 13:37:00 -0700 | [diff] [blame] | 44 | import java.util.Objects; |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 45 | |
| 46 | /** |
| 47 | * Manages the pool of available IP Addresses in the network and |
| 48 | * Remembers the mapping between MAC ID and IP Addresses assigned. |
| 49 | */ |
| 50 | |
| 51 | @Component(immediate = true) |
| 52 | @Service |
Thomas Vachuska | a1da42e | 2015-09-09 00:45:22 -0700 | [diff] [blame] | 53 | public class DistributedDhcpStore implements DhcpStore { |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 54 | |
| 55 | private final Logger log = LoggerFactory.getLogger(getClass()); |
| 56 | |
| 57 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 58 | protected StorageService storageService; |
| 59 | |
samanwita pal | 2a31340 | 2015-09-14 16:03:22 -0700 | [diff] [blame] | 60 | private ConsistentMap<HostId, IpAssignment> allocationMap; |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 61 | |
| 62 | private DistributedSet<Ip4Address> freeIPPool; |
| 63 | |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 64 | private static Ip4Address startIPRange; |
| 65 | |
| 66 | private static Ip4Address endIPRange; |
| 67 | |
| 68 | // Hardcoded values are default values. |
| 69 | |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 70 | private static int timeoutForPendingAssignments = 60; |
Hyunsun Moon | 0824208 | 2015-12-08 01:29:22 -0800 | [diff] [blame] | 71 | private static final int MAX_RETRIES = 3; |
| 72 | private static final int MAX_BACKOFF = 10; |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 73 | |
| 74 | @Activate |
| 75 | protected void activate() { |
samanwita pal | 2a31340 | 2015-09-14 16:03:22 -0700 | [diff] [blame] | 76 | allocationMap = storageService.<HostId, IpAssignment>consistentMapBuilder() |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 77 | .withName("onos-dhcp-assignedIP") |
| 78 | .withSerializer(Serializer.using( |
| 79 | new KryoNamespace.Builder() |
| 80 | .register(KryoNamespaces.API) |
Thomas Vachuska | a1da42e | 2015-09-09 00:45:22 -0700 | [diff] [blame] | 81 | .register(IpAssignment.class, |
| 82 | IpAssignment.AssignmentStatus.class, |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 83 | Date.class, |
| 84 | long.class, |
| 85 | Ip4Address.class) |
| 86 | .build())) |
| 87 | .build(); |
| 88 | |
| 89 | freeIPPool = storageService.<Ip4Address>setBuilder() |
| 90 | .withName("onos-dhcp-freeIP") |
| 91 | .withSerializer(Serializer.using(KryoNamespaces.API)) |
Madan Jampani | 538be74 | 2016-02-10 14:55:38 -0800 | [diff] [blame] | 92 | .build() |
| 93 | .asDistributedSet(); |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 94 | |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 95 | log.info("Started"); |
| 96 | } |
| 97 | |
| 98 | @Deactivate |
| 99 | protected void deactivate() { |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 100 | log.info("Stopped"); |
| 101 | } |
| 102 | |
| 103 | @Override |
samanwita pal | 2a31340 | 2015-09-14 16:03:22 -0700 | [diff] [blame] | 104 | public Ip4Address suggestIP(HostId hostId, Ip4Address requestedIP) { |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 105 | |
Thomas Vachuska | a1da42e | 2015-09-09 00:45:22 -0700 | [diff] [blame] | 106 | IpAssignment assignmentInfo; |
samanwita pal | 2a31340 | 2015-09-14 16:03:22 -0700 | [diff] [blame] | 107 | if (allocationMap.containsKey(hostId)) { |
| 108 | assignmentInfo = allocationMap.get(hostId).value(); |
Thomas Vachuska | a1da42e | 2015-09-09 00:45:22 -0700 | [diff] [blame] | 109 | IpAssignment.AssignmentStatus status = assignmentInfo.assignmentStatus(); |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 110 | Ip4Address ipAddr = assignmentInfo.ipAddress(); |
| 111 | |
daniel | 877bb2f | 2015-11-12 21:33:05 +0900 | [diff] [blame] | 112 | if (assignmentInfo.rangeNotEnforced()) { |
daniel | cd9deed | 2015-10-30 17:16:16 +0900 | [diff] [blame] | 113 | return assignmentInfo.ipAddress(); |
| 114 | } else if (status == IpAssignment.AssignmentStatus.Option_Assigned || |
Thomas Vachuska | a1da42e | 2015-09-09 00:45:22 -0700 | [diff] [blame] | 115 | status == IpAssignment.AssignmentStatus.Option_Requested) { |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 116 | // Client has a currently Active Binding. |
samanwita pal | 0bff430 | 2015-09-15 13:37:00 -0700 | [diff] [blame] | 117 | if (ipWithinRange(ipAddr)) { |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 118 | return ipAddr; |
| 119 | } |
| 120 | |
Thomas Vachuska | a1da42e | 2015-09-09 00:45:22 -0700 | [diff] [blame] | 121 | } else if (status == IpAssignment.AssignmentStatus.Option_Expired) { |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 122 | // Client has a Released or Expired Binding. |
| 123 | if (freeIPPool.contains(ipAddr)) { |
Thomas Vachuska | a1da42e | 2015-09-09 00:45:22 -0700 | [diff] [blame] | 124 | assignmentInfo = IpAssignment.builder() |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 125 | .ipAddress(ipAddr) |
| 126 | .timestamp(new Date()) |
| 127 | .leasePeriod(timeoutForPendingAssignments) |
Thomas Vachuska | a1da42e | 2015-09-09 00:45:22 -0700 | [diff] [blame] | 128 | .assignmentStatus(IpAssignment.AssignmentStatus.Option_Requested) |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 129 | .build(); |
| 130 | if (freeIPPool.remove(ipAddr)) { |
samanwita pal | 2a31340 | 2015-09-14 16:03:22 -0700 | [diff] [blame] | 131 | allocationMap.put(hostId, assignmentInfo); |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 132 | return ipAddr; |
| 133 | } |
| 134 | } |
| 135 | } |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 136 | } else if (requestedIP.toInt() != 0) { |
| 137 | // Client has requested an IP. |
| 138 | if (freeIPPool.contains(requestedIP)) { |
Thomas Vachuska | a1da42e | 2015-09-09 00:45:22 -0700 | [diff] [blame] | 139 | assignmentInfo = IpAssignment.builder() |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 140 | .ipAddress(requestedIP) |
| 141 | .timestamp(new Date()) |
| 142 | .leasePeriod(timeoutForPendingAssignments) |
Thomas Vachuska | a1da42e | 2015-09-09 00:45:22 -0700 | [diff] [blame] | 143 | .assignmentStatus(IpAssignment.AssignmentStatus.Option_Requested) |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 144 | .build(); |
| 145 | if (freeIPPool.remove(requestedIP)) { |
samanwita pal | 2a31340 | 2015-09-14 16:03:22 -0700 | [diff] [blame] | 146 | allocationMap.put(hostId, assignmentInfo); |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 147 | return requestedIP; |
| 148 | } |
| 149 | } |
| 150 | } |
| 151 | |
| 152 | // Allocate a new IP from the server's pool of available IP. |
| 153 | Ip4Address nextIPAddr = fetchNextIP(); |
samanwita pal | 2a31340 | 2015-09-14 16:03:22 -0700 | [diff] [blame] | 154 | if (nextIPAddr != null) { |
| 155 | assignmentInfo = IpAssignment.builder() |
| 156 | .ipAddress(nextIPAddr) |
| 157 | .timestamp(new Date()) |
| 158 | .leasePeriod(timeoutForPendingAssignments) |
| 159 | .assignmentStatus(IpAssignment.AssignmentStatus.Option_Requested) |
| 160 | .build(); |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 161 | |
samanwita pal | 2a31340 | 2015-09-14 16:03:22 -0700 | [diff] [blame] | 162 | allocationMap.put(hostId, assignmentInfo); |
| 163 | } |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 164 | return nextIPAddr; |
| 165 | |
| 166 | } |
| 167 | |
| 168 | @Override |
daniel | 877bb2f | 2015-11-12 21:33:05 +0900 | [diff] [blame] | 169 | public boolean assignIP(HostId hostId, Ip4Address ipAddr, int leaseTime, boolean rangeNotEnforced, |
daniel | cd9deed | 2015-10-30 17:16:16 +0900 | [diff] [blame] | 170 | List<Ip4Address> addressList) { |
daniel | 877bb2f | 2015-11-12 21:33:05 +0900 | [diff] [blame] | 171 | log.debug("Assign IP Called w/ Ip4Address: {}, HostId: {}", ipAddr.toString(), hostId.mac().toString()); |
| 172 | |
Madan Jampani | 56dcdce | 2016-02-03 13:58:52 -0800 | [diff] [blame] | 173 | Versioned<IpAssignment> currentAssignment = allocationMap.get(hostId); |
| 174 | IpAssignment newAssignment = null; |
| 175 | if (currentAssignment == null) { |
| 176 | if (rangeNotEnforced) { |
| 177 | newAssignment = IpAssignment.builder() |
| 178 | .ipAddress(ipAddr) |
| 179 | .timestamp(new Date()) |
| 180 | .leasePeriod(leaseTime) |
| 181 | .rangeNotEnforced(true) |
| 182 | .assignmentStatus(IpAssignment.AssignmentStatus.Option_RangeNotEnforced) |
| 183 | .subnetMask((Ip4Address) addressList.toArray()[0]) |
| 184 | .dhcpServer((Ip4Address) addressList.toArray()[1]) |
| 185 | .routerAddress((Ip4Address) addressList.toArray()[2]) |
| 186 | .domainServer((Ip4Address) addressList.toArray()[3]) |
| 187 | .build(); |
Hyunsun Moon | 0824208 | 2015-12-08 01:29:22 -0800 | [diff] [blame] | 188 | |
Madan Jampani | 56dcdce | 2016-02-03 13:58:52 -0800 | [diff] [blame] | 189 | } else if (freeIPPool.remove(ipAddr)) { |
| 190 | newAssignment = IpAssignment.builder() |
| 191 | .ipAddress(ipAddr) |
| 192 | .timestamp(new Date()) |
| 193 | .leasePeriod(leaseTime) |
| 194 | .assignmentStatus(IpAssignment.AssignmentStatus.Option_Assigned) |
| 195 | .build(); |
| 196 | } else { |
| 197 | return false; |
| 198 | } |
| 199 | return allocationMap.putIfAbsent(hostId, newAssignment) == null; |
| 200 | // TODO: handle the case where map changed. |
| 201 | } else { |
| 202 | IpAssignment existingAssignment = currentAssignment.value(); |
| 203 | if (Objects.equals(existingAssignment.ipAddress(), ipAddr) && |
| 204 | (existingAssignment.rangeNotEnforced() || ipWithinRange(ipAddr))) { |
| 205 | switch (existingAssignment.assignmentStatus()) { |
| 206 | case Option_RangeNotEnforced: |
| 207 | newAssignment = IpAssignment.builder() |
| 208 | .ipAddress(ipAddr) |
| 209 | .timestamp(new Date()) |
| 210 | .leasePeriod(existingAssignment.leasePeriod()) |
| 211 | .rangeNotEnforced(true) |
| 212 | .assignmentStatus(IpAssignment.AssignmentStatus.Option_RangeNotEnforced) |
| 213 | .subnetMask(existingAssignment.subnetMask()) |
| 214 | .dhcpServer(existingAssignment.dhcpServer()) |
| 215 | .routerAddress(existingAssignment.routerAddress()) |
| 216 | .domainServer(existingAssignment.domainServer()) |
| 217 | .build(); |
| 218 | break; |
| 219 | case Option_Assigned: |
| 220 | case Option_Requested: |
| 221 | newAssignment = IpAssignment.builder() |
| 222 | .ipAddress(ipAddr) |
| 223 | .timestamp(new Date()) |
| 224 | .leasePeriod(leaseTime) |
| 225 | .assignmentStatus(IpAssignment.AssignmentStatus.Option_Assigned) |
| 226 | .build(); |
| 227 | break; |
| 228 | case Option_Expired: |
| 229 | if (freeIPPool.remove(ipAddr)) { |
| 230 | newAssignment = IpAssignment.builder() |
| 231 | .ipAddress(ipAddr) |
| 232 | .timestamp(new Date()) |
| 233 | .leasePeriod(leaseTime) |
| 234 | .assignmentStatus(IpAssignment.AssignmentStatus.Option_Assigned) |
| 235 | .build(); |
| 236 | } |
| 237 | break; |
| 238 | default: |
| 239 | break; |
| 240 | } |
| 241 | return allocationMap.replace(hostId, currentAssignment.version(), newAssignment); |
| 242 | } else { |
| 243 | return false; |
| 244 | } |
| 245 | } |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 246 | } |
| 247 | |
| 248 | @Override |
samanwita pal | c40e5ed | 2015-09-24 11:01:51 -0700 | [diff] [blame] | 249 | public Ip4Address releaseIP(HostId hostId) { |
samanwita pal | 2a31340 | 2015-09-14 16:03:22 -0700 | [diff] [blame] | 250 | if (allocationMap.containsKey(hostId)) { |
| 251 | IpAssignment newAssignment = IpAssignment.builder(allocationMap.get(hostId).value()) |
Thomas Vachuska | a1da42e | 2015-09-09 00:45:22 -0700 | [diff] [blame] | 252 | .assignmentStatus(IpAssignment.AssignmentStatus.Option_Expired) |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 253 | .build(); |
| 254 | Ip4Address freeIP = newAssignment.ipAddress(); |
samanwita pal | 2a31340 | 2015-09-14 16:03:22 -0700 | [diff] [blame] | 255 | allocationMap.put(hostId, newAssignment); |
samanwita pal | 0bff430 | 2015-09-15 13:37:00 -0700 | [diff] [blame] | 256 | if (ipWithinRange(freeIP)) { |
samanwita pal | 2a31340 | 2015-09-14 16:03:22 -0700 | [diff] [blame] | 257 | freeIPPool.add(freeIP); |
| 258 | } |
samanwita pal | c40e5ed | 2015-09-24 11:01:51 -0700 | [diff] [blame] | 259 | return freeIP; |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 260 | } |
samanwita pal | c40e5ed | 2015-09-24 11:01:51 -0700 | [diff] [blame] | 261 | return null; |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 262 | } |
| 263 | |
| 264 | @Override |
| 265 | public void setDefaultTimeoutForPurge(int timeInSeconds) { |
| 266 | timeoutForPendingAssignments = timeInSeconds; |
| 267 | } |
| 268 | |
| 269 | @Override |
samanwita pal | 0bff430 | 2015-09-15 13:37:00 -0700 | [diff] [blame] | 270 | public Map<HostId, IpAssignment> listAssignedMapping() { |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 271 | |
samanwita pal | 0bff430 | 2015-09-15 13:37:00 -0700 | [diff] [blame] | 272 | Map<HostId, IpAssignment> validMapping = new HashMap<>(); |
| 273 | IpAssignment assignment; |
samanwita pal | 2a31340 | 2015-09-14 16:03:22 -0700 | [diff] [blame] | 274 | for (Map.Entry<HostId, Versioned<IpAssignment>> entry: allocationMap.entrySet()) { |
samanwita pal | 0bff430 | 2015-09-15 13:37:00 -0700 | [diff] [blame] | 275 | assignment = entry.getValue().value(); |
daniel | cd9deed | 2015-10-30 17:16:16 +0900 | [diff] [blame] | 276 | if (assignment.assignmentStatus() == IpAssignment.AssignmentStatus.Option_Assigned |
daniel | 877bb2f | 2015-11-12 21:33:05 +0900 | [diff] [blame] | 277 | || assignment.assignmentStatus() == IpAssignment.AssignmentStatus.Option_RangeNotEnforced) { |
samanwita pal | 0bff430 | 2015-09-15 13:37:00 -0700 | [diff] [blame] | 278 | validMapping.put(entry.getKey(), assignment); |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 279 | } |
| 280 | } |
samanwita pal | 0bff430 | 2015-09-15 13:37:00 -0700 | [diff] [blame] | 281 | return validMapping; |
| 282 | } |
Thomas Vachuska | 54dc352 | 2015-09-09 00:11:45 -0700 | [diff] [blame] | 283 | |
samanwita pal | 0bff430 | 2015-09-15 13:37:00 -0700 | [diff] [blame] | 284 | @Override |
| 285 | public Map<HostId, IpAssignment> listAllMapping() { |
| 286 | Map<HostId, IpAssignment> validMapping = new HashMap<>(); |
| 287 | for (Map.Entry<HostId, Versioned<IpAssignment>> entry: allocationMap.entrySet()) { |
| 288 | validMapping.put(entry.getKey(), entry.getValue().value()); |
| 289 | } |
| 290 | return validMapping; |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 291 | } |
| 292 | |
| 293 | @Override |
daniel | 877bb2f | 2015-11-12 21:33:05 +0900 | [diff] [blame] | 294 | public boolean assignStaticIP(MacAddress macID, Ip4Address ipAddr, boolean rangeNotEnforced, |
daniel | cd9deed | 2015-10-30 17:16:16 +0900 | [diff] [blame] | 295 | List<Ip4Address> addressList) { |
samanwita pal | 2a31340 | 2015-09-14 16:03:22 -0700 | [diff] [blame] | 296 | HostId host = HostId.hostId(macID); |
daniel | 877bb2f | 2015-11-12 21:33:05 +0900 | [diff] [blame] | 297 | return assignIP(host, ipAddr, -1, rangeNotEnforced, addressList); |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 298 | } |
| 299 | |
| 300 | @Override |
| 301 | public boolean removeStaticIP(MacAddress macID) { |
samanwita pal | 2a31340 | 2015-09-14 16:03:22 -0700 | [diff] [blame] | 302 | HostId host = HostId.hostId(macID); |
| 303 | if (allocationMap.containsKey(host)) { |
| 304 | IpAssignment assignment = allocationMap.get(host).value(); |
daniel | 877bb2f | 2015-11-12 21:33:05 +0900 | [diff] [blame] | 305 | |
| 306 | if (assignment.rangeNotEnforced()) { |
| 307 | allocationMap.remove(host); |
| 308 | return true; |
| 309 | } |
| 310 | |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 311 | Ip4Address freeIP = assignment.ipAddress(); |
| 312 | if (assignment.leasePeriod() < 0) { |
samanwita pal | 2a31340 | 2015-09-14 16:03:22 -0700 | [diff] [blame] | 313 | allocationMap.remove(host); |
samanwita pal | 0bff430 | 2015-09-15 13:37:00 -0700 | [diff] [blame] | 314 | if (ipWithinRange(freeIP)) { |
samanwita pal | 2a31340 | 2015-09-14 16:03:22 -0700 | [diff] [blame] | 315 | freeIPPool.add(freeIP); |
| 316 | } |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 317 | return true; |
| 318 | } |
| 319 | } |
| 320 | return false; |
| 321 | } |
| 322 | |
| 323 | @Override |
| 324 | public Iterable<Ip4Address> getAvailableIPs() { |
Sho SHIMIZU | fd0933b | 2015-09-11 15:17:48 -0700 | [diff] [blame] | 325 | return ImmutableSet.copyOf(freeIPPool); |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 326 | } |
| 327 | |
| 328 | @Override |
| 329 | public void populateIPPoolfromRange(Ip4Address startIP, Ip4Address endIP) { |
| 330 | // Clear all entries from previous range. |
samanwita pal | 0bff430 | 2015-09-15 13:37:00 -0700 | [diff] [blame] | 331 | allocationMap.clear(); |
| 332 | freeIPPool.clear(); |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 333 | startIPRange = startIP; |
| 334 | endIPRange = endIP; |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 335 | |
| 336 | int lastIP = endIP.toInt(); |
| 337 | Ip4Address nextIP; |
| 338 | for (int loopCounter = startIP.toInt(); loopCounter <= lastIP; loopCounter++) { |
| 339 | nextIP = Ip4Address.valueOf(loopCounter); |
| 340 | freeIPPool.add(nextIP); |
| 341 | } |
| 342 | } |
| 343 | |
daniel | cd9deed | 2015-10-30 17:16:16 +0900 | [diff] [blame] | 344 | @Override |
| 345 | public IpAssignment getIpAssignmentFromAllocationMap(HostId hostId) { |
| 346 | return allocationMap.get(hostId).value(); |
| 347 | } |
| 348 | |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 349 | /** |
| 350 | * Fetches the next available IP from the free pool pf IPs. |
| 351 | * |
| 352 | * @return the next available IP address |
| 353 | */ |
| 354 | private Ip4Address fetchNextIP() { |
| 355 | for (Ip4Address freeIP : freeIPPool) { |
| 356 | if (freeIPPool.remove(freeIP)) { |
| 357 | return freeIP; |
| 358 | } |
| 359 | } |
| 360 | return null; |
| 361 | } |
samanwita pal | 0bff430 | 2015-09-15 13:37:00 -0700 | [diff] [blame] | 362 | |
| 363 | /** |
| 364 | * Returns true if the given ip is within the range of available IPs. |
| 365 | * |
| 366 | * @param ip given ip address |
| 367 | * @return true if within range, false otherwise |
| 368 | */ |
| 369 | private boolean ipWithinRange(Ip4Address ip) { |
| 370 | if ((ip.toInt() >= startIPRange.toInt()) && (ip.toInt() <= endIPRange.toInt())) { |
| 371 | return true; |
| 372 | } |
| 373 | return false; |
| 374 | } |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 375 | } |
daniel | cd9deed | 2015-10-30 17:16:16 +0900 | [diff] [blame] | 376 | |