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.HashMap; |
Hyunsun Moon | 04b1fe9 | 2016-05-18 21:28:06 -0700 | [diff] [blame^] | 43 | |
| 44 | import static org.onosproject.dhcp.IpAssignment.AssignmentStatus.Option_Assigned; |
| 45 | import static org.onosproject.dhcp.IpAssignment.AssignmentStatus.Option_RangeNotEnforced; |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 46 | |
| 47 | /** |
| 48 | * Manages the pool of available IP Addresses in the network and |
| 49 | * Remembers the mapping between MAC ID and IP Addresses assigned. |
| 50 | */ |
| 51 | |
| 52 | @Component(immediate = true) |
| 53 | @Service |
Thomas Vachuska | a1da42e | 2015-09-09 00:45:22 -0700 | [diff] [blame] | 54 | public class DistributedDhcpStore implements DhcpStore { |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 55 | |
| 56 | private final Logger log = LoggerFactory.getLogger(getClass()); |
| 57 | |
| 58 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 59 | protected StorageService storageService; |
| 60 | |
samanwita pal | 2a31340 | 2015-09-14 16:03:22 -0700 | [diff] [blame] | 61 | private ConsistentMap<HostId, IpAssignment> allocationMap; |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 62 | private DistributedSet<Ip4Address> freeIPPool; |
| 63 | |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 64 | private static Ip4Address startIPRange; |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 65 | private static Ip4Address endIPRange; |
| 66 | |
| 67 | // Hardcoded values are default values. |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 68 | private static int timeoutForPendingAssignments = 60; |
| 69 | |
| 70 | @Activate |
| 71 | protected void activate() { |
samanwita pal | 2a31340 | 2015-09-14 16:03:22 -0700 | [diff] [blame] | 72 | allocationMap = storageService.<HostId, IpAssignment>consistentMapBuilder() |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 73 | .withName("onos-dhcp-assignedIP") |
| 74 | .withSerializer(Serializer.using( |
| 75 | new KryoNamespace.Builder() |
| 76 | .register(KryoNamespaces.API) |
Thomas Vachuska | a1da42e | 2015-09-09 00:45:22 -0700 | [diff] [blame] | 77 | .register(IpAssignment.class, |
| 78 | IpAssignment.AssignmentStatus.class, |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 79 | Date.class, |
| 80 | long.class, |
| 81 | Ip4Address.class) |
| 82 | .build())) |
| 83 | .build(); |
| 84 | |
| 85 | freeIPPool = storageService.<Ip4Address>setBuilder() |
| 86 | .withName("onos-dhcp-freeIP") |
| 87 | .withSerializer(Serializer.using(KryoNamespaces.API)) |
Madan Jampani | 538be74 | 2016-02-10 14:55:38 -0800 | [diff] [blame] | 88 | .build() |
| 89 | .asDistributedSet(); |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 90 | |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 91 | log.info("Started"); |
| 92 | } |
| 93 | |
| 94 | @Deactivate |
| 95 | protected void deactivate() { |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 96 | log.info("Stopped"); |
| 97 | } |
| 98 | |
| 99 | @Override |
samanwita pal | 2a31340 | 2015-09-14 16:03:22 -0700 | [diff] [blame] | 100 | public Ip4Address suggestIP(HostId hostId, Ip4Address requestedIP) { |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 101 | |
Thomas Vachuska | a1da42e | 2015-09-09 00:45:22 -0700 | [diff] [blame] | 102 | IpAssignment assignmentInfo; |
samanwita pal | 2a31340 | 2015-09-14 16:03:22 -0700 | [diff] [blame] | 103 | if (allocationMap.containsKey(hostId)) { |
| 104 | assignmentInfo = allocationMap.get(hostId).value(); |
Thomas Vachuska | a1da42e | 2015-09-09 00:45:22 -0700 | [diff] [blame] | 105 | IpAssignment.AssignmentStatus status = assignmentInfo.assignmentStatus(); |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 106 | Ip4Address ipAddr = assignmentInfo.ipAddress(); |
| 107 | |
Hyunsun Moon | 04b1fe9 | 2016-05-18 21:28:06 -0700 | [diff] [blame^] | 108 | if (assignmentInfo.assignmentStatus().equals(Option_RangeNotEnforced)) { |
daniel | cd9deed | 2015-10-30 17:16:16 +0900 | [diff] [blame] | 109 | return assignmentInfo.ipAddress(); |
Hyunsun Moon | 04b1fe9 | 2016-05-18 21:28:06 -0700 | [diff] [blame^] | 110 | } else if (status == Option_Assigned || |
Thomas Vachuska | a1da42e | 2015-09-09 00:45:22 -0700 | [diff] [blame] | 111 | status == IpAssignment.AssignmentStatus.Option_Requested) { |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 112 | // Client has a currently Active Binding. |
samanwita pal | 0bff430 | 2015-09-15 13:37:00 -0700 | [diff] [blame] | 113 | if (ipWithinRange(ipAddr)) { |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 114 | return ipAddr; |
| 115 | } |
| 116 | |
Thomas Vachuska | a1da42e | 2015-09-09 00:45:22 -0700 | [diff] [blame] | 117 | } else if (status == IpAssignment.AssignmentStatus.Option_Expired) { |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 118 | // Client has a Released or Expired Binding. |
| 119 | if (freeIPPool.contains(ipAddr)) { |
Thomas Vachuska | a1da42e | 2015-09-09 00:45:22 -0700 | [diff] [blame] | 120 | assignmentInfo = IpAssignment.builder() |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 121 | .ipAddress(ipAddr) |
| 122 | .timestamp(new Date()) |
| 123 | .leasePeriod(timeoutForPendingAssignments) |
Thomas Vachuska | a1da42e | 2015-09-09 00:45:22 -0700 | [diff] [blame] | 124 | .assignmentStatus(IpAssignment.AssignmentStatus.Option_Requested) |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 125 | .build(); |
| 126 | if (freeIPPool.remove(ipAddr)) { |
samanwita pal | 2a31340 | 2015-09-14 16:03:22 -0700 | [diff] [blame] | 127 | allocationMap.put(hostId, assignmentInfo); |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 128 | return ipAddr; |
| 129 | } |
| 130 | } |
| 131 | } |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 132 | } else if (requestedIP.toInt() != 0) { |
| 133 | // Client has requested an IP. |
| 134 | if (freeIPPool.contains(requestedIP)) { |
Thomas Vachuska | a1da42e | 2015-09-09 00:45:22 -0700 | [diff] [blame] | 135 | assignmentInfo = IpAssignment.builder() |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 136 | .ipAddress(requestedIP) |
| 137 | .timestamp(new Date()) |
| 138 | .leasePeriod(timeoutForPendingAssignments) |
Thomas Vachuska | a1da42e | 2015-09-09 00:45:22 -0700 | [diff] [blame] | 139 | .assignmentStatus(IpAssignment.AssignmentStatus.Option_Requested) |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 140 | .build(); |
| 141 | if (freeIPPool.remove(requestedIP)) { |
samanwita pal | 2a31340 | 2015-09-14 16:03:22 -0700 | [diff] [blame] | 142 | allocationMap.put(hostId, assignmentInfo); |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 143 | return requestedIP; |
| 144 | } |
| 145 | } |
| 146 | } |
| 147 | |
| 148 | // Allocate a new IP from the server's pool of available IP. |
| 149 | Ip4Address nextIPAddr = fetchNextIP(); |
samanwita pal | 2a31340 | 2015-09-14 16:03:22 -0700 | [diff] [blame] | 150 | if (nextIPAddr != null) { |
| 151 | assignmentInfo = IpAssignment.builder() |
| 152 | .ipAddress(nextIPAddr) |
| 153 | .timestamp(new Date()) |
| 154 | .leasePeriod(timeoutForPendingAssignments) |
| 155 | .assignmentStatus(IpAssignment.AssignmentStatus.Option_Requested) |
| 156 | .build(); |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 157 | |
samanwita pal | 2a31340 | 2015-09-14 16:03:22 -0700 | [diff] [blame] | 158 | allocationMap.put(hostId, assignmentInfo); |
| 159 | } |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 160 | return nextIPAddr; |
| 161 | |
| 162 | } |
| 163 | |
| 164 | @Override |
Hyunsun Moon | 04b1fe9 | 2016-05-18 21:28:06 -0700 | [diff] [blame^] | 165 | public boolean assignIP(HostId hostId, IpAssignment ipAssignment) { |
| 166 | log.trace("Assign IP Called HostId: {}, ipAssignment: {}", |
| 167 | hostId, ipAssignment); |
daniel | 877bb2f | 2015-11-12 21:33:05 +0900 | [diff] [blame] | 168 | |
Madan Jampani | 56dcdce | 2016-02-03 13:58:52 -0800 | [diff] [blame] | 169 | IpAssignment newAssignment = null; |
Hyunsun Moon | 04b1fe9 | 2016-05-18 21:28:06 -0700 | [diff] [blame^] | 170 | Versioned<IpAssignment> versionedAssignment = allocationMap.get(hostId); |
| 171 | Ip4Address requestedIp = ipAssignment.ipAddress(); |
Hyunsun Moon | 0824208 | 2015-12-08 01:29:22 -0800 | [diff] [blame] | 172 | |
Hyunsun Moon | 04b1fe9 | 2016-05-18 21:28:06 -0700 | [diff] [blame^] | 173 | if (versionedAssignment == null) { |
| 174 | // this is new IP assignment of static mapping |
| 175 | // dynamic assignment is done in suggestIP |
| 176 | if (ipAssignment.assignmentStatus().equals(Option_RangeNotEnforced)) { |
| 177 | newAssignment = ipAssignment; |
| 178 | } else if (freeIPPool.remove(requestedIp)) { |
| 179 | newAssignment = IpAssignment.builder(ipAssignment) |
| 180 | .assignmentStatus(Option_Assigned) |
Madan Jampani | 56dcdce | 2016-02-03 13:58:52 -0800 | [diff] [blame] | 181 | .timestamp(new Date()) |
Madan Jampani | 56dcdce | 2016-02-03 13:58:52 -0800 | [diff] [blame] | 182 | .build(); |
| 183 | } else { |
Hyunsun Moon | 04b1fe9 | 2016-05-18 21:28:06 -0700 | [diff] [blame^] | 184 | log.trace("Failed to assign IP for {}", ipAssignment); |
Madan Jampani | 56dcdce | 2016-02-03 13:58:52 -0800 | [diff] [blame] | 185 | return false; |
| 186 | } |
Hyunsun Moon | 04b1fe9 | 2016-05-18 21:28:06 -0700 | [diff] [blame^] | 187 | log.trace("Assigned {}", newAssignment); |
Madan Jampani | 56dcdce | 2016-02-03 13:58:52 -0800 | [diff] [blame] | 188 | return allocationMap.putIfAbsent(hostId, newAssignment) == null; |
| 189 | // TODO: handle the case where map changed. |
| 190 | } else { |
Hyunsun Moon | 04b1fe9 | 2016-05-18 21:28:06 -0700 | [diff] [blame^] | 191 | // this is lease renew or rebinding |
| 192 | // update assignment status and time stamp, and keep the others |
| 193 | IpAssignment existingAssignment = versionedAssignment.value(); |
| 194 | if (!existingAssignment.ipAddress().equals(requestedIp)) { |
| 195 | // return false if existing assignment is not for the |
| 196 | // requested host |
| 197 | log.trace("Failed to assign IP for {}", ipAssignment); |
Madan Jampani | 56dcdce | 2016-02-03 13:58:52 -0800 | [diff] [blame] | 198 | return false; |
| 199 | } |
Hyunsun Moon | 04b1fe9 | 2016-05-18 21:28:06 -0700 | [diff] [blame^] | 200 | |
| 201 | switch (existingAssignment.assignmentStatus()) { |
| 202 | case Option_RangeNotEnforced: |
| 203 | newAssignment = IpAssignment.builder(existingAssignment) |
| 204 | .timestamp(new Date()) |
| 205 | .build(); |
| 206 | break; |
| 207 | case Option_Expired: |
| 208 | if (!freeIPPool.remove(requestedIp)) { |
| 209 | // requested IP is expired for this host and reserved to the other host |
| 210 | return false; |
| 211 | } |
| 212 | case Option_Assigned: |
| 213 | case Option_Requested: |
| 214 | newAssignment = IpAssignment.builder(existingAssignment) |
| 215 | .timestamp(new Date()) |
| 216 | .assignmentStatus(Option_Assigned) |
| 217 | .build(); |
| 218 | break; |
| 219 | default: |
| 220 | break; |
| 221 | } |
| 222 | log.trace("Assigned {}", newAssignment); |
| 223 | return allocationMap.replace(hostId, versionedAssignment.version(), newAssignment); |
Madan Jampani | 56dcdce | 2016-02-03 13:58:52 -0800 | [diff] [blame] | 224 | } |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 225 | } |
| 226 | |
| 227 | @Override |
samanwita pal | c40e5ed | 2015-09-24 11:01:51 -0700 | [diff] [blame] | 228 | public Ip4Address releaseIP(HostId hostId) { |
samanwita pal | 2a31340 | 2015-09-14 16:03:22 -0700 | [diff] [blame] | 229 | if (allocationMap.containsKey(hostId)) { |
| 230 | IpAssignment newAssignment = IpAssignment.builder(allocationMap.get(hostId).value()) |
Hyunsun Moon | 04b1fe9 | 2016-05-18 21:28:06 -0700 | [diff] [blame^] | 231 | .assignmentStatus(IpAssignment.AssignmentStatus.Option_Expired) |
| 232 | .build(); |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 233 | Ip4Address freeIP = newAssignment.ipAddress(); |
samanwita pal | 2a31340 | 2015-09-14 16:03:22 -0700 | [diff] [blame] | 234 | allocationMap.put(hostId, newAssignment); |
samanwita pal | 0bff430 | 2015-09-15 13:37:00 -0700 | [diff] [blame] | 235 | if (ipWithinRange(freeIP)) { |
samanwita pal | 2a31340 | 2015-09-14 16:03:22 -0700 | [diff] [blame] | 236 | freeIPPool.add(freeIP); |
| 237 | } |
samanwita pal | c40e5ed | 2015-09-24 11:01:51 -0700 | [diff] [blame] | 238 | return freeIP; |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 239 | } |
samanwita pal | c40e5ed | 2015-09-24 11:01:51 -0700 | [diff] [blame] | 240 | return null; |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 241 | } |
| 242 | |
| 243 | @Override |
| 244 | public void setDefaultTimeoutForPurge(int timeInSeconds) { |
| 245 | timeoutForPendingAssignments = timeInSeconds; |
| 246 | } |
| 247 | |
| 248 | @Override |
samanwita pal | 0bff430 | 2015-09-15 13:37:00 -0700 | [diff] [blame] | 249 | public Map<HostId, IpAssignment> listAssignedMapping() { |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 250 | |
samanwita pal | 0bff430 | 2015-09-15 13:37:00 -0700 | [diff] [blame] | 251 | Map<HostId, IpAssignment> validMapping = new HashMap<>(); |
| 252 | IpAssignment assignment; |
samanwita pal | 2a31340 | 2015-09-14 16:03:22 -0700 | [diff] [blame] | 253 | for (Map.Entry<HostId, Versioned<IpAssignment>> entry: allocationMap.entrySet()) { |
samanwita pal | 0bff430 | 2015-09-15 13:37:00 -0700 | [diff] [blame] | 254 | assignment = entry.getValue().value(); |
Hyunsun Moon | 04b1fe9 | 2016-05-18 21:28:06 -0700 | [diff] [blame^] | 255 | if (assignment.assignmentStatus() == Option_Assigned |
| 256 | || assignment.assignmentStatus() == Option_RangeNotEnforced) { |
samanwita pal | 0bff430 | 2015-09-15 13:37:00 -0700 | [diff] [blame] | 257 | validMapping.put(entry.getKey(), assignment); |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 258 | } |
| 259 | } |
samanwita pal | 0bff430 | 2015-09-15 13:37:00 -0700 | [diff] [blame] | 260 | return validMapping; |
| 261 | } |
Thomas Vachuska | 54dc352 | 2015-09-09 00:11:45 -0700 | [diff] [blame] | 262 | |
samanwita pal | 0bff430 | 2015-09-15 13:37:00 -0700 | [diff] [blame] | 263 | @Override |
| 264 | public Map<HostId, IpAssignment> listAllMapping() { |
| 265 | Map<HostId, IpAssignment> validMapping = new HashMap<>(); |
| 266 | for (Map.Entry<HostId, Versioned<IpAssignment>> entry: allocationMap.entrySet()) { |
| 267 | validMapping.put(entry.getKey(), entry.getValue().value()); |
| 268 | } |
| 269 | return validMapping; |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 270 | } |
| 271 | |
| 272 | @Override |
Hyunsun Moon | 04b1fe9 | 2016-05-18 21:28:06 -0700 | [diff] [blame^] | 273 | public boolean assignStaticIP(MacAddress macAddress, IpAssignment ipAssignment) { |
| 274 | HostId host = HostId.hostId(macAddress); |
| 275 | return assignIP(host, ipAssignment); |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 276 | } |
| 277 | |
| 278 | @Override |
| 279 | public boolean removeStaticIP(MacAddress macID) { |
samanwita pal | 2a31340 | 2015-09-14 16:03:22 -0700 | [diff] [blame] | 280 | HostId host = HostId.hostId(macID); |
| 281 | if (allocationMap.containsKey(host)) { |
| 282 | IpAssignment assignment = allocationMap.get(host).value(); |
daniel | 877bb2f | 2015-11-12 21:33:05 +0900 | [diff] [blame] | 283 | |
Hyunsun Moon | 04b1fe9 | 2016-05-18 21:28:06 -0700 | [diff] [blame^] | 284 | if (assignment.assignmentStatus().equals(Option_RangeNotEnforced)) { |
daniel | 877bb2f | 2015-11-12 21:33:05 +0900 | [diff] [blame] | 285 | allocationMap.remove(host); |
| 286 | return true; |
| 287 | } |
| 288 | |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 289 | Ip4Address freeIP = assignment.ipAddress(); |
| 290 | if (assignment.leasePeriod() < 0) { |
samanwita pal | 2a31340 | 2015-09-14 16:03:22 -0700 | [diff] [blame] | 291 | allocationMap.remove(host); |
samanwita pal | 0bff430 | 2015-09-15 13:37:00 -0700 | [diff] [blame] | 292 | if (ipWithinRange(freeIP)) { |
samanwita pal | 2a31340 | 2015-09-14 16:03:22 -0700 | [diff] [blame] | 293 | freeIPPool.add(freeIP); |
| 294 | } |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 295 | return true; |
| 296 | } |
| 297 | } |
| 298 | return false; |
| 299 | } |
| 300 | |
| 301 | @Override |
| 302 | public Iterable<Ip4Address> getAvailableIPs() { |
Sho SHIMIZU | fd0933b | 2015-09-11 15:17:48 -0700 | [diff] [blame] | 303 | return ImmutableSet.copyOf(freeIPPool); |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 304 | } |
| 305 | |
| 306 | @Override |
| 307 | public void populateIPPoolfromRange(Ip4Address startIP, Ip4Address endIP) { |
| 308 | // Clear all entries from previous range. |
samanwita pal | 0bff430 | 2015-09-15 13:37:00 -0700 | [diff] [blame] | 309 | allocationMap.clear(); |
| 310 | freeIPPool.clear(); |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 311 | startIPRange = startIP; |
| 312 | endIPRange = endIP; |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 313 | |
| 314 | int lastIP = endIP.toInt(); |
| 315 | Ip4Address nextIP; |
| 316 | for (int loopCounter = startIP.toInt(); loopCounter <= lastIP; loopCounter++) { |
| 317 | nextIP = Ip4Address.valueOf(loopCounter); |
| 318 | freeIPPool.add(nextIP); |
| 319 | } |
Hyunsun Moon | 04b1fe9 | 2016-05-18 21:28:06 -0700 | [diff] [blame^] | 320 | log.debug("Updated free IP pool {}:{} size:{}", startIP, endIP, freeIPPool.size()); |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 321 | } |
| 322 | |
daniel | cd9deed | 2015-10-30 17:16:16 +0900 | [diff] [blame] | 323 | @Override |
| 324 | public IpAssignment getIpAssignmentFromAllocationMap(HostId hostId) { |
Hyunsun Moon | 04b1fe9 | 2016-05-18 21:28:06 -0700 | [diff] [blame^] | 325 | if (allocationMap.get(hostId) != null) { |
| 326 | return allocationMap.get(hostId).value(); |
| 327 | } else { |
| 328 | return null; |
| 329 | } |
daniel | cd9deed | 2015-10-30 17:16:16 +0900 | [diff] [blame] | 330 | } |
| 331 | |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 332 | /** |
| 333 | * Fetches the next available IP from the free pool pf IPs. |
| 334 | * |
| 335 | * @return the next available IP address |
| 336 | */ |
| 337 | private Ip4Address fetchNextIP() { |
| 338 | for (Ip4Address freeIP : freeIPPool) { |
| 339 | if (freeIPPool.remove(freeIP)) { |
| 340 | return freeIP; |
| 341 | } |
| 342 | } |
| 343 | return null; |
| 344 | } |
samanwita pal | 0bff430 | 2015-09-15 13:37:00 -0700 | [diff] [blame] | 345 | |
| 346 | /** |
| 347 | * Returns true if the given ip is within the range of available IPs. |
| 348 | * |
| 349 | * @param ip given ip address |
| 350 | * @return true if within range, false otherwise |
| 351 | */ |
| 352 | private boolean ipWithinRange(Ip4Address ip) { |
| 353 | if ((ip.toInt() >= startIPRange.toInt()) && (ip.toInt() <= endIPRange.toInt())) { |
| 354 | return true; |
| 355 | } |
| 356 | return false; |
| 357 | } |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 358 | } |
daniel | cd9deed | 2015-10-30 17:16:16 +0900 | [diff] [blame] | 359 | |