samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 1 | /* |
Brian O'Connor | a09fe5b | 2017-08-03 21:12:30 -0700 | [diff] [blame] | 2 | * Copyright 2015-present Open Networking Foundation |
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; |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 19 | import org.onlab.packet.Ip4Address; |
| 20 | import org.onlab.packet.MacAddress; |
| 21 | import org.onlab.util.KryoNamespace; |
Thomas Vachuska | a1da42e | 2015-09-09 00:45:22 -0700 | [diff] [blame] | 22 | import org.onosproject.dhcp.DhcpStore; |
| 23 | import org.onosproject.dhcp.IpAssignment; |
samanwita pal | 2a31340 | 2015-09-14 16:03:22 -0700 | [diff] [blame] | 24 | import org.onosproject.net.HostId; |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 25 | import org.onosproject.store.serializers.KryoNamespaces; |
| 26 | import org.onosproject.store.service.ConsistentMap; |
| 27 | import org.onosproject.store.service.DistributedSet; |
| 28 | import org.onosproject.store.service.Serializer; |
| 29 | import org.onosproject.store.service.StorageService; |
| 30 | import org.onosproject.store.service.Versioned; |
Ray Milkey | d84f89b | 2018-08-17 14:54:17 -0700 | [diff] [blame] | 31 | import org.osgi.service.component.annotations.Activate; |
| 32 | import org.osgi.service.component.annotations.Component; |
| 33 | import org.osgi.service.component.annotations.Deactivate; |
| 34 | import org.osgi.service.component.annotations.Reference; |
| 35 | import org.osgi.service.component.annotations.ReferenceCardinality; |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 36 | import org.slf4j.Logger; |
| 37 | import org.slf4j.LoggerFactory; |
| 38 | |
| 39 | import java.util.Date; |
daniel | cd9deed | 2015-10-30 17:16:16 +0900 | [diff] [blame] | 40 | import java.util.HashMap; |
Ray Milkey | d84f89b | 2018-08-17 14:54:17 -0700 | [diff] [blame] | 41 | import java.util.Map; |
Hyunsun Moon | 04b1fe9 | 2016-05-18 21:28:06 -0700 | [diff] [blame] | 42 | |
| 43 | import static org.onosproject.dhcp.IpAssignment.AssignmentStatus.Option_Assigned; |
| 44 | import static org.onosproject.dhcp.IpAssignment.AssignmentStatus.Option_RangeNotEnforced; |
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 | |
Ray Milkey | d84f89b | 2018-08-17 14:54:17 -0700 | [diff] [blame] | 51 | @Component(immediate = true, service = DhcpStore.class) |
Thomas Vachuska | a1da42e | 2015-09-09 00:45:22 -0700 | [diff] [blame] | 52 | public class DistributedDhcpStore implements DhcpStore { |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 53 | |
| 54 | private final Logger log = LoggerFactory.getLogger(getClass()); |
| 55 | |
Ray Milkey | d84f89b | 2018-08-17 14:54:17 -0700 | [diff] [blame] | 56 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 57 | protected StorageService storageService; |
| 58 | |
samanwita pal | 2a31340 | 2015-09-14 16:03:22 -0700 | [diff] [blame] | 59 | private ConsistentMap<HostId, IpAssignment> allocationMap; |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 60 | private DistributedSet<Ip4Address> freeIPPool; |
| 61 | |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 62 | private static Ip4Address startIPRange; |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 63 | private static Ip4Address endIPRange; |
| 64 | |
| 65 | // Hardcoded values are default values. |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 66 | private static int timeoutForPendingAssignments = 60; |
| 67 | |
| 68 | @Activate |
| 69 | protected void activate() { |
samanwita pal | 2a31340 | 2015-09-14 16:03:22 -0700 | [diff] [blame] | 70 | allocationMap = storageService.<HostId, IpAssignment>consistentMapBuilder() |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 71 | .withName("onos-dhcp-assignedIP") |
| 72 | .withSerializer(Serializer.using( |
| 73 | new KryoNamespace.Builder() |
| 74 | .register(KryoNamespaces.API) |
Thomas Vachuska | a1da42e | 2015-09-09 00:45:22 -0700 | [diff] [blame] | 75 | .register(IpAssignment.class, |
| 76 | IpAssignment.AssignmentStatus.class, |
Yuta HIGUCHI | bc36560 | 2016-08-15 14:14:05 -0700 | [diff] [blame] | 77 | Date.class) |
| 78 | .build("dhcp"))) |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 79 | .build(); |
| 80 | |
| 81 | freeIPPool = storageService.<Ip4Address>setBuilder() |
| 82 | .withName("onos-dhcp-freeIP") |
| 83 | .withSerializer(Serializer.using(KryoNamespaces.API)) |
Madan Jampani | 538be74 | 2016-02-10 14:55:38 -0800 | [diff] [blame] | 84 | .build() |
| 85 | .asDistributedSet(); |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 86 | |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 87 | log.info("Started"); |
| 88 | } |
| 89 | |
| 90 | @Deactivate |
| 91 | protected void deactivate() { |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 92 | log.info("Stopped"); |
| 93 | } |
| 94 | |
| 95 | @Override |
samanwita pal | 2a31340 | 2015-09-14 16:03:22 -0700 | [diff] [blame] | 96 | public Ip4Address suggestIP(HostId hostId, Ip4Address requestedIP) { |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 97 | |
Thomas Vachuska | a1da42e | 2015-09-09 00:45:22 -0700 | [diff] [blame] | 98 | IpAssignment assignmentInfo; |
samanwita pal | 2a31340 | 2015-09-14 16:03:22 -0700 | [diff] [blame] | 99 | if (allocationMap.containsKey(hostId)) { |
| 100 | assignmentInfo = allocationMap.get(hostId).value(); |
Thomas Vachuska | a1da42e | 2015-09-09 00:45:22 -0700 | [diff] [blame] | 101 | IpAssignment.AssignmentStatus status = assignmentInfo.assignmentStatus(); |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 102 | Ip4Address ipAddr = assignmentInfo.ipAddress(); |
| 103 | |
Hyunsun Moon | 04b1fe9 | 2016-05-18 21:28:06 -0700 | [diff] [blame] | 104 | if (assignmentInfo.assignmentStatus().equals(Option_RangeNotEnforced)) { |
daniel | cd9deed | 2015-10-30 17:16:16 +0900 | [diff] [blame] | 105 | return assignmentInfo.ipAddress(); |
Hyunsun Moon | 04b1fe9 | 2016-05-18 21:28:06 -0700 | [diff] [blame] | 106 | } else if (status == Option_Assigned || |
Thomas Vachuska | a1da42e | 2015-09-09 00:45:22 -0700 | [diff] [blame] | 107 | status == IpAssignment.AssignmentStatus.Option_Requested) { |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 108 | // Client has a currently Active Binding. |
samanwita pal | 0bff430 | 2015-09-15 13:37:00 -0700 | [diff] [blame] | 109 | if (ipWithinRange(ipAddr)) { |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 110 | return ipAddr; |
| 111 | } |
| 112 | |
Thomas Vachuska | a1da42e | 2015-09-09 00:45:22 -0700 | [diff] [blame] | 113 | } else if (status == IpAssignment.AssignmentStatus.Option_Expired) { |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 114 | // Client has a Released or Expired Binding. |
| 115 | if (freeIPPool.contains(ipAddr)) { |
Thomas Vachuska | a1da42e | 2015-09-09 00:45:22 -0700 | [diff] [blame] | 116 | assignmentInfo = IpAssignment.builder() |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 117 | .ipAddress(ipAddr) |
| 118 | .timestamp(new Date()) |
| 119 | .leasePeriod(timeoutForPendingAssignments) |
Thomas Vachuska | a1da42e | 2015-09-09 00:45:22 -0700 | [diff] [blame] | 120 | .assignmentStatus(IpAssignment.AssignmentStatus.Option_Requested) |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 121 | .build(); |
| 122 | if (freeIPPool.remove(ipAddr)) { |
samanwita pal | 2a31340 | 2015-09-14 16:03:22 -0700 | [diff] [blame] | 123 | allocationMap.put(hostId, assignmentInfo); |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 124 | return ipAddr; |
| 125 | } |
| 126 | } |
| 127 | } |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 128 | } else if (requestedIP.toInt() != 0) { |
| 129 | // Client has requested an IP. |
| 130 | if (freeIPPool.contains(requestedIP)) { |
Thomas Vachuska | a1da42e | 2015-09-09 00:45:22 -0700 | [diff] [blame] | 131 | assignmentInfo = IpAssignment.builder() |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 132 | .ipAddress(requestedIP) |
| 133 | .timestamp(new Date()) |
| 134 | .leasePeriod(timeoutForPendingAssignments) |
Thomas Vachuska | a1da42e | 2015-09-09 00:45:22 -0700 | [diff] [blame] | 135 | .assignmentStatus(IpAssignment.AssignmentStatus.Option_Requested) |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 136 | .build(); |
| 137 | if (freeIPPool.remove(requestedIP)) { |
samanwita pal | 2a31340 | 2015-09-14 16:03:22 -0700 | [diff] [blame] | 138 | allocationMap.put(hostId, assignmentInfo); |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 139 | return requestedIP; |
| 140 | } |
| 141 | } |
| 142 | } |
| 143 | |
| 144 | // Allocate a new IP from the server's pool of available IP. |
| 145 | Ip4Address nextIPAddr = fetchNextIP(); |
samanwita pal | 2a31340 | 2015-09-14 16:03:22 -0700 | [diff] [blame] | 146 | if (nextIPAddr != null) { |
| 147 | assignmentInfo = IpAssignment.builder() |
| 148 | .ipAddress(nextIPAddr) |
| 149 | .timestamp(new Date()) |
| 150 | .leasePeriod(timeoutForPendingAssignments) |
| 151 | .assignmentStatus(IpAssignment.AssignmentStatus.Option_Requested) |
| 152 | .build(); |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 153 | |
samanwita pal | 2a31340 | 2015-09-14 16:03:22 -0700 | [diff] [blame] | 154 | allocationMap.put(hostId, assignmentInfo); |
| 155 | } |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 156 | return nextIPAddr; |
| 157 | |
| 158 | } |
| 159 | |
| 160 | @Override |
Hyunsun Moon | 04b1fe9 | 2016-05-18 21:28:06 -0700 | [diff] [blame] | 161 | public boolean assignIP(HostId hostId, IpAssignment ipAssignment) { |
| 162 | log.trace("Assign IP Called HostId: {}, ipAssignment: {}", |
| 163 | hostId, ipAssignment); |
daniel | 877bb2f | 2015-11-12 21:33:05 +0900 | [diff] [blame] | 164 | |
Madan Jampani | 56dcdce | 2016-02-03 13:58:52 -0800 | [diff] [blame] | 165 | IpAssignment newAssignment = null; |
Hyunsun Moon | 04b1fe9 | 2016-05-18 21:28:06 -0700 | [diff] [blame] | 166 | Versioned<IpAssignment> versionedAssignment = allocationMap.get(hostId); |
| 167 | Ip4Address requestedIp = ipAssignment.ipAddress(); |
Hyunsun Moon | 0824208 | 2015-12-08 01:29:22 -0800 | [diff] [blame] | 168 | |
Hyunsun Moon | 04b1fe9 | 2016-05-18 21:28:06 -0700 | [diff] [blame] | 169 | if (versionedAssignment == null) { |
| 170 | // this is new IP assignment of static mapping |
| 171 | // dynamic assignment is done in suggestIP |
| 172 | if (ipAssignment.assignmentStatus().equals(Option_RangeNotEnforced)) { |
| 173 | newAssignment = ipAssignment; |
| 174 | } else if (freeIPPool.remove(requestedIp)) { |
| 175 | newAssignment = IpAssignment.builder(ipAssignment) |
| 176 | .assignmentStatus(Option_Assigned) |
Madan Jampani | 56dcdce | 2016-02-03 13:58:52 -0800 | [diff] [blame] | 177 | .timestamp(new Date()) |
Madan Jampani | 56dcdce | 2016-02-03 13:58:52 -0800 | [diff] [blame] | 178 | .build(); |
| 179 | } else { |
Hyunsun Moon | 04b1fe9 | 2016-05-18 21:28:06 -0700 | [diff] [blame] | 180 | log.trace("Failed to assign IP for {}", ipAssignment); |
Madan Jampani | 56dcdce | 2016-02-03 13:58:52 -0800 | [diff] [blame] | 181 | return false; |
| 182 | } |
Hyunsun Moon | 04b1fe9 | 2016-05-18 21:28:06 -0700 | [diff] [blame] | 183 | log.trace("Assigned {}", newAssignment); |
Madan Jampani | 56dcdce | 2016-02-03 13:58:52 -0800 | [diff] [blame] | 184 | return allocationMap.putIfAbsent(hostId, newAssignment) == null; |
| 185 | // TODO: handle the case where map changed. |
| 186 | } else { |
Hyunsun Moon | 04b1fe9 | 2016-05-18 21:28:06 -0700 | [diff] [blame] | 187 | // this is lease renew or rebinding |
| 188 | // update assignment status and time stamp, and keep the others |
| 189 | IpAssignment existingAssignment = versionedAssignment.value(); |
| 190 | if (!existingAssignment.ipAddress().equals(requestedIp)) { |
| 191 | // return false if existing assignment is not for the |
| 192 | // requested host |
| 193 | log.trace("Failed to assign IP for {}", ipAssignment); |
Madan Jampani | 56dcdce | 2016-02-03 13:58:52 -0800 | [diff] [blame] | 194 | return false; |
| 195 | } |
Hyunsun Moon | 04b1fe9 | 2016-05-18 21:28:06 -0700 | [diff] [blame] | 196 | |
| 197 | switch (existingAssignment.assignmentStatus()) { |
| 198 | case Option_RangeNotEnforced: |
| 199 | newAssignment = IpAssignment.builder(existingAssignment) |
| 200 | .timestamp(new Date()) |
| 201 | .build(); |
| 202 | break; |
| 203 | case Option_Expired: |
| 204 | if (!freeIPPool.remove(requestedIp)) { |
| 205 | // requested IP is expired for this host and reserved to the other host |
| 206 | return false; |
| 207 | } |
| 208 | case Option_Assigned: |
| 209 | case Option_Requested: |
| 210 | newAssignment = IpAssignment.builder(existingAssignment) |
| 211 | .timestamp(new Date()) |
| 212 | .assignmentStatus(Option_Assigned) |
| 213 | .build(); |
| 214 | break; |
| 215 | default: |
| 216 | break; |
| 217 | } |
| 218 | log.trace("Assigned {}", newAssignment); |
| 219 | return allocationMap.replace(hostId, versionedAssignment.version(), newAssignment); |
Madan Jampani | 56dcdce | 2016-02-03 13:58:52 -0800 | [diff] [blame] | 220 | } |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 221 | } |
| 222 | |
| 223 | @Override |
samanwita pal | c40e5ed | 2015-09-24 11:01:51 -0700 | [diff] [blame] | 224 | public Ip4Address releaseIP(HostId hostId) { |
samanwita pal | 2a31340 | 2015-09-14 16:03:22 -0700 | [diff] [blame] | 225 | if (allocationMap.containsKey(hostId)) { |
sangho | 5808d52 | 2016-08-12 16:03:34 +0900 | [diff] [blame] | 226 | // If the IP has been assigned with Option_RangeNotEnforced, |
| 227 | // we do not release the IP address nor remove the host from HostService. |
| 228 | // Therefore, if the IP is assigned statically, the IP needs to be released statically. |
| 229 | Versioned<IpAssignment> assignmentVersioned = allocationMap.get(hostId); |
| 230 | if (Versioned.valueOrNull(assignmentVersioned) != null && |
| 231 | assignmentVersioned.value().assignmentStatus().equals(Option_RangeNotEnforced)) { |
| 232 | return null; |
| 233 | } |
| 234 | |
samanwita pal | 2a31340 | 2015-09-14 16:03:22 -0700 | [diff] [blame] | 235 | IpAssignment newAssignment = IpAssignment.builder(allocationMap.get(hostId).value()) |
Hyunsun Moon | 04b1fe9 | 2016-05-18 21:28:06 -0700 | [diff] [blame] | 236 | .assignmentStatus(IpAssignment.AssignmentStatus.Option_Expired) |
| 237 | .build(); |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 238 | Ip4Address freeIP = newAssignment.ipAddress(); |
samanwita pal | 2a31340 | 2015-09-14 16:03:22 -0700 | [diff] [blame] | 239 | allocationMap.put(hostId, newAssignment); |
samanwita pal | 0bff430 | 2015-09-15 13:37:00 -0700 | [diff] [blame] | 240 | if (ipWithinRange(freeIP)) { |
samanwita pal | 2a31340 | 2015-09-14 16:03:22 -0700 | [diff] [blame] | 241 | freeIPPool.add(freeIP); |
| 242 | } |
samanwita pal | c40e5ed | 2015-09-24 11:01:51 -0700 | [diff] [blame] | 243 | return freeIP; |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 244 | } |
samanwita pal | c40e5ed | 2015-09-24 11:01:51 -0700 | [diff] [blame] | 245 | return null; |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 246 | } |
| 247 | |
| 248 | @Override |
| 249 | public void setDefaultTimeoutForPurge(int timeInSeconds) { |
| 250 | timeoutForPendingAssignments = timeInSeconds; |
| 251 | } |
| 252 | |
| 253 | @Override |
samanwita pal | 0bff430 | 2015-09-15 13:37:00 -0700 | [diff] [blame] | 254 | public Map<HostId, IpAssignment> listAssignedMapping() { |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 255 | |
samanwita pal | 0bff430 | 2015-09-15 13:37:00 -0700 | [diff] [blame] | 256 | Map<HostId, IpAssignment> validMapping = new HashMap<>(); |
| 257 | IpAssignment assignment; |
samanwita pal | 2a31340 | 2015-09-14 16:03:22 -0700 | [diff] [blame] | 258 | for (Map.Entry<HostId, Versioned<IpAssignment>> entry: allocationMap.entrySet()) { |
samanwita pal | 0bff430 | 2015-09-15 13:37:00 -0700 | [diff] [blame] | 259 | assignment = entry.getValue().value(); |
Hyunsun Moon | 04b1fe9 | 2016-05-18 21:28:06 -0700 | [diff] [blame] | 260 | if (assignment.assignmentStatus() == Option_Assigned |
| 261 | || assignment.assignmentStatus() == Option_RangeNotEnforced) { |
samanwita pal | 0bff430 | 2015-09-15 13:37:00 -0700 | [diff] [blame] | 262 | validMapping.put(entry.getKey(), assignment); |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 263 | } |
| 264 | } |
samanwita pal | 0bff430 | 2015-09-15 13:37:00 -0700 | [diff] [blame] | 265 | return validMapping; |
| 266 | } |
Thomas Vachuska | 54dc352 | 2015-09-09 00:11:45 -0700 | [diff] [blame] | 267 | |
samanwita pal | 0bff430 | 2015-09-15 13:37:00 -0700 | [diff] [blame] | 268 | @Override |
| 269 | public Map<HostId, IpAssignment> listAllMapping() { |
| 270 | Map<HostId, IpAssignment> validMapping = new HashMap<>(); |
| 271 | for (Map.Entry<HostId, Versioned<IpAssignment>> entry: allocationMap.entrySet()) { |
| 272 | validMapping.put(entry.getKey(), entry.getValue().value()); |
| 273 | } |
| 274 | return validMapping; |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 275 | } |
| 276 | |
| 277 | @Override |
Hyunsun Moon | 04b1fe9 | 2016-05-18 21:28:06 -0700 | [diff] [blame] | 278 | public boolean assignStaticIP(MacAddress macAddress, IpAssignment ipAssignment) { |
| 279 | HostId host = HostId.hostId(macAddress); |
| 280 | return assignIP(host, ipAssignment); |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 281 | } |
| 282 | |
| 283 | @Override |
| 284 | public boolean removeStaticIP(MacAddress macID) { |
samanwita pal | 2a31340 | 2015-09-14 16:03:22 -0700 | [diff] [blame] | 285 | HostId host = HostId.hostId(macID); |
| 286 | if (allocationMap.containsKey(host)) { |
| 287 | IpAssignment assignment = allocationMap.get(host).value(); |
daniel | 877bb2f | 2015-11-12 21:33:05 +0900 | [diff] [blame] | 288 | |
Hyunsun Moon | 04b1fe9 | 2016-05-18 21:28:06 -0700 | [diff] [blame] | 289 | if (assignment.assignmentStatus().equals(Option_RangeNotEnforced)) { |
daniel | 877bb2f | 2015-11-12 21:33:05 +0900 | [diff] [blame] | 290 | allocationMap.remove(host); |
| 291 | return true; |
| 292 | } |
| 293 | |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 294 | Ip4Address freeIP = assignment.ipAddress(); |
| 295 | if (assignment.leasePeriod() < 0) { |
samanwita pal | 2a31340 | 2015-09-14 16:03:22 -0700 | [diff] [blame] | 296 | allocationMap.remove(host); |
samanwita pal | 0bff430 | 2015-09-15 13:37:00 -0700 | [diff] [blame] | 297 | if (ipWithinRange(freeIP)) { |
samanwita pal | 2a31340 | 2015-09-14 16:03:22 -0700 | [diff] [blame] | 298 | freeIPPool.add(freeIP); |
| 299 | } |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 300 | return true; |
| 301 | } |
| 302 | } |
| 303 | return false; |
| 304 | } |
| 305 | |
| 306 | @Override |
| 307 | public Iterable<Ip4Address> getAvailableIPs() { |
Sho SHIMIZU | fd0933b | 2015-09-11 15:17:48 -0700 | [diff] [blame] | 308 | return ImmutableSet.copyOf(freeIPPool); |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 309 | } |
| 310 | |
| 311 | @Override |
| 312 | public void populateIPPoolfromRange(Ip4Address startIP, Ip4Address endIP) { |
| 313 | // Clear all entries from previous range. |
samanwita pal | 0bff430 | 2015-09-15 13:37:00 -0700 | [diff] [blame] | 314 | allocationMap.clear(); |
| 315 | freeIPPool.clear(); |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 316 | startIPRange = startIP; |
| 317 | endIPRange = endIP; |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 318 | |
| 319 | int lastIP = endIP.toInt(); |
| 320 | Ip4Address nextIP; |
| 321 | for (int loopCounter = startIP.toInt(); loopCounter <= lastIP; loopCounter++) { |
| 322 | nextIP = Ip4Address.valueOf(loopCounter); |
| 323 | freeIPPool.add(nextIP); |
| 324 | } |
Hyunsun Moon | 04b1fe9 | 2016-05-18 21:28:06 -0700 | [diff] [blame] | 325 | log.debug("Updated free IP pool {}:{} size:{}", startIP, endIP, freeIPPool.size()); |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 326 | } |
| 327 | |
daniel | cd9deed | 2015-10-30 17:16:16 +0900 | [diff] [blame] | 328 | @Override |
| 329 | public IpAssignment getIpAssignmentFromAllocationMap(HostId hostId) { |
Hyunsun Moon | 04b1fe9 | 2016-05-18 21:28:06 -0700 | [diff] [blame] | 330 | if (allocationMap.get(hostId) != null) { |
| 331 | return allocationMap.get(hostId).value(); |
| 332 | } else { |
| 333 | return null; |
| 334 | } |
daniel | cd9deed | 2015-10-30 17:16:16 +0900 | [diff] [blame] | 335 | } |
| 336 | |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 337 | /** |
| 338 | * Fetches the next available IP from the free pool pf IPs. |
| 339 | * |
| 340 | * @return the next available IP address |
| 341 | */ |
| 342 | private Ip4Address fetchNextIP() { |
| 343 | for (Ip4Address freeIP : freeIPPool) { |
| 344 | if (freeIPPool.remove(freeIP)) { |
| 345 | return freeIP; |
| 346 | } |
| 347 | } |
| 348 | return null; |
| 349 | } |
samanwita pal | 0bff430 | 2015-09-15 13:37:00 -0700 | [diff] [blame] | 350 | |
| 351 | /** |
| 352 | * Returns true if the given ip is within the range of available IPs. |
| 353 | * |
| 354 | * @param ip given ip address |
| 355 | * @return true if within range, false otherwise |
| 356 | */ |
| 357 | private boolean ipWithinRange(Ip4Address ip) { |
| 358 | if ((ip.toInt() >= startIPRange.toInt()) && (ip.toInt() <= endIPRange.toInt())) { |
| 359 | return true; |
| 360 | } |
| 361 | return false; |
| 362 | } |
samanwita pal | f28207b | 2015-09-04 10:41:56 -0700 | [diff] [blame] | 363 | } |
daniel | cd9deed | 2015-10-30 17:16:16 +0900 | [diff] [blame] | 364 | |