2 * Copyright (c) 2017 Ericsson India Global Services Pvt Ltd. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
8 package org.opendaylight.netvirt.fibmanager.api;
10 import static java.util.Comparator.comparing;
11 import static java.util.stream.Collectors.toList;
13 import java.math.BigInteger;
14 import java.net.InetAddress;
15 import java.net.UnknownHostException;
16 import java.util.ArrayList;
17 import java.util.Collections;
18 import java.util.List;
20 import java.util.Optional;
21 import java.util.concurrent.ExecutionException;
22 import java.util.stream.Collectors;
23 import org.eclipse.jdt.annotation.Nullable;
24 import org.opendaylight.mdsal.binding.api.DataBroker;
25 import org.opendaylight.mdsal.binding.api.ReadTransaction;
26 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
27 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.fibmanager.rev150330.FibEntries;
28 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.fibmanager.rev150330.fibentries.VrfTables;
29 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.fibmanager.rev150330.fibentries.VrfTablesKey;
30 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.fibmanager.rev150330.vrfentries.VrfEntry;
31 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.fibmanager.rev150330.vrfentries.VrfEntryBuilder;
32 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.fibmanager.rev150330.vrfentries.VrfEntryKey;
33 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.fibmanager.rev150330.vrfentrybase.RoutePaths;
34 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.fibmanager.rev150330.vrfentrybase.RoutePathsBuilder;
35 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.fibmanager.rev150330.vrfentrybase.RoutePathsKey;
36 import org.opendaylight.yangtools.yang.binding.DataObject;
37 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
38 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier.InstanceIdentifierBuilder;
39 import org.opendaylight.yangtools.yang.common.Uint32;
40 import org.opendaylight.yangtools.yang.common.Uint64;
42 public final class FibHelper {
47 public static RoutePaths buildRoutePath(String nextHop, Uint32 label) {
48 RoutePathsBuilder builder = new RoutePathsBuilder()
49 .withKey(new RoutePathsKey(nextHop))
50 .setNexthopAddress(nextHop);
52 builder.setLabel(label);
54 return builder.build();
57 public static VrfEntryBuilder getVrfEntryBuilder(String prefix, RouteOrigin origin, @Nullable String parentVpnRd) {
58 return new VrfEntryBuilder().withKey(new VrfEntryKey(prefix)).setDestPrefix(prefix)
59 .setOrigin(origin.getValue()).setParentVpnRd(parentVpnRd);
62 public static VrfEntryBuilder getVrfEntryBuilder(String prefix, List<RoutePaths> routePaths,
63 RouteOrigin origin, @Nullable String parentVpnRd) {
64 return new VrfEntryBuilder().withKey(new VrfEntryKey(prefix)).setDestPrefix(prefix)
65 .setRoutePaths(routePaths).setOrigin(origin.getValue()).setParentVpnRd(parentVpnRd);
68 public static VrfEntryBuilder getVrfEntryBuilder(String prefix, Uint32 label, String nextHop, RouteOrigin origin,
69 @Nullable String parentVpnRd) {
70 if (nextHop != null) {
71 RoutePaths routePath = buildRoutePath(nextHop, label);
72 return getVrfEntryBuilder(prefix, Collections.singletonList(routePath), origin, parentVpnRd);
74 return getVrfEntryBuilder(prefix, origin, parentVpnRd);
78 public static VrfEntryBuilder getVrfEntryBuilder(VrfEntry vrfEntry, Uint32 label,
79 List<String> nextHopList, RouteOrigin origin, @Nullable String parentvpnRd) {
80 List<RoutePaths> routePaths =
81 nextHopList.stream().map(nextHop -> buildRoutePath(nextHop, label))
83 return getVrfEntryBuilder(vrfEntry.getDestPrefix(), routePaths, origin, parentvpnRd);
86 public static InstanceIdentifier<RoutePaths> buildRoutePathId(String rd, String prefix, String nextHop) {
87 InstanceIdentifierBuilder<RoutePaths> idBuilder =
88 InstanceIdentifier.builder(FibEntries.class)
89 .child(VrfTables.class, new VrfTablesKey(rd))
90 .child(VrfEntry.class, new VrfEntryKey(prefix))
91 .child(RoutePaths.class, new RoutePathsKey(nextHop));
92 return idBuilder.build();
95 public static boolean isControllerManagedNonInterVpnLinkRoute(RouteOrigin routeOrigin) {
96 return routeOrigin == RouteOrigin.STATIC
97 || routeOrigin == RouteOrigin.CONNECTED
98 || routeOrigin == RouteOrigin.LOCAL;
101 public static boolean isControllerManagedVpnInterfaceRoute(RouteOrigin routeOrigin) {
102 return routeOrigin == RouteOrigin.STATIC
103 || routeOrigin == RouteOrigin.LOCAL;
106 public static boolean isControllerManagedNonSelfImportedRoute(RouteOrigin routeOrigin) {
107 return routeOrigin != RouteOrigin.SELF_IMPORTED;
110 public static void sortIpAddress(List<RoutePaths> routePathList) {
111 if (routePathList != null) {
112 routePathList.sort(comparing(RoutePaths::getNexthopAddress));
116 public static List<String> getNextHopListFromRoutePaths(final VrfEntry vrfEntry) {
117 Map<RoutePathsKey, RoutePaths> keyRoutePathsMap = vrfEntry.getRoutePaths();
118 if (keyRoutePathsMap == null || keyRoutePathsMap.isEmpty()) {
119 return new ArrayList<>();
121 return keyRoutePathsMap.values().stream()
122 .map(RoutePaths::getNexthopAddress)
123 .collect(Collectors.toList());
126 public static Optional<VrfEntry> getVrfEntry(DataBroker broker, String rd, String ipPrefix) {
127 InstanceIdentifier<VrfEntry> vrfEntryId = InstanceIdentifier.builder(FibEntries.class)
128 .child(VrfTables.class, new VrfTablesKey(rd))
129 .child(VrfEntry.class, new VrfEntryKey(ipPrefix)).build();
130 return read(broker, LogicalDatastoreType.CONFIGURATION, vrfEntryId);
133 private static <T extends DataObject> Optional<T> read(DataBroker broker,
134 LogicalDatastoreType datastoreType, InstanceIdentifier<T> path) {
135 try (ReadTransaction tx = broker.newReadOnlyTransaction()) {
136 return tx.read(datastoreType, path).get();
137 } catch (InterruptedException | ExecutionException e) {
138 throw new RuntimeException(e);
142 /** get true if this prefix is an IPv4 version, false otherwise.
143 * @param prefix the prefix as (x.x.x.x/nn) to find if it is in IP version 4
144 * @return true if it is an IPv4 or false if it is not.
146 public static boolean isIpv4Prefix(String prefix) {
147 if (prefix == null || prefix.length() < 7) {
151 String ip = getIpFromPrefix(prefix);
152 java.net.Inet4Address.getByName(ip);
153 } catch (SecurityException | UnknownHostException | ClassCastException e) {
159 /** get true if this prefix is an IPv6 version, false otherwise.
160 * @param prefix the prefix as ( x:x:x::/nn) to find if it is in IP version 6
161 * @return true if it is an IPv4 or false if it is not.
163 public static boolean isIpv6Prefix(String prefix) {
164 if (prefix == null || prefix.length() < 2) {
168 String ip = getIpFromPrefix(prefix);
169 java.net.Inet6Address.getByName(ip);
170 } catch (SecurityException | UnknownHostException | ClassCastException e) {
176 /**get String format IP from prefix as x.x.....x/nn.
177 * @param prefix the prefix as IPv4 or IPv6 as x.....x/nn
178 * @return prefix if "/" is unfindable or the IP only as x.x...x from x.x......x/nn
181 public static String getIpFromPrefix(String prefix) {
182 if (prefix == null || prefix.length() < 2) {
186 String[] prefixValues = prefix.split("/");
187 if (prefixValues.length > 0) {
188 rep = prefixValues[0];
193 /**Return true if this prefix or subnet is belonging the specified subnetwork.
194 * @param prefixToTest the prefix which could be in the subnet
195 * @param subnet the subnet that have to contain the prefixToTest to return true
196 * @return true if the param subnet contained the prefixToTest false otherwise
198 public static boolean isBelongingPrefix(String prefixToTest, String subnet) {
199 return doesPrefixBelongToSubnet(prefixToTest, subnet, true);
202 /**Return true if this prefix or subnet is belonging the specified subnetwork.
203 * @param prefixToTest the prefix which could be in the subnet
204 * @param subnet the subnet that have to contain the prefixToTest to return true
205 * @param exactMatch boolean set to true if exact match is expected
206 * @return true if the param subnet contained the prefixToTest false otherwise
208 public static boolean doesPrefixBelongToSubnet(String prefixToTest, String subnet, boolean exactMatch) {
209 if (prefixToTest == null || prefixToTest.length() < 7 || subnet == null || subnet.length() < 7) {
212 if (isIpv4Prefix(prefixToTest) && isIpv4Prefix(subnet)
213 || isIpv6Prefix(prefixToTest) && isIpv6Prefix(subnet)) {
216 if (isIpv6Prefix(prefixToTest)) {
220 String ipPref = getIpFromPrefix(prefixToTest);
221 String ipSub = getIpFromPrefix(subnet);
222 String maskSubString = subnet.substring(subnet.indexOf("/") + 1);
223 String maskPrefString;
224 if (prefixToTest.contains("/")) {
225 maskPrefString = prefixToTest.substring(prefixToTest.indexOf("/") + 1);
226 } else if (ipVersion == 4) {
227 maskPrefString = "32";
229 maskPrefString = "128";
233 int maskPref = Integer.parseInt(maskPrefString);
234 int maskSub = Integer.parseInt(maskSubString);
235 if (exactMatch && maskPref != maskSub) {
236 /*because the mask must be exactly the same between them, the return type is false. This behavior could
237 * be changed to ignored it in including a boolean options to force or not the same mask control*/
240 BigInteger maskSubBig = getMaskNetwork(ipVersion, maskSub);
241 byte[] byteIpSub = InetAddress.getByName(ipSub).getAddress();
242 byte[] byteIpPref = InetAddress.getByName(ipPref).getAddress();
243 BigInteger netFromIpSub = packBigInteger(byteIpSub).and(maskSubBig);
244 BigInteger netFromIpPref = packBigInteger(byteIpPref).and(maskSubBig);
245 return netFromIpSub.compareTo(netFromIpPref) == 0;
246 } catch (NumberFormatException | UnknownHostException e) {
253 /**This method converts a byte[] to a BigInteger value.
254 * @param bytes the byte[] of IP
255 * @return (big) integer value of IP_bytes
257 public static BigInteger packBigInteger(byte[] bytes) {
258 BigInteger val = BigInteger.valueOf(0);
259 for (byte b : bytes) {
260 val = val.shiftLeft(8);
261 val = val.add(BigInteger.valueOf(b & 0xff));
266 /**get the bits cache mask of net for a ip version type.
267 * @param ipVersion version of ip must be 4 or 6
268 * @param mask the lengh of the mask of net as 24 from this representation 10.1.1.0/24 or 64 for 2001::1/64
269 * @return the bit mask of net ex: x.x.x.x/24 return a BigInteger == 0xFFFFFFotherwise null if any error
272 public static BigInteger getMaskNetwork(int ipVersion, int mask) {
274 if (ipVersion == 6) {
275 lenghBitsIp = 128 - 1;
276 } else if (ipVersion == 4) {
277 lenghBitsIp = 32 - 1;
279 return null;//ip version is unknown
281 BigInteger bb = BigInteger.ZERO;
282 for (int i = 0 ; i < mask; i++) {
283 bb = bb.setBit(lenghBitsIp - i);
288 public static String getJobKeyForDcGwLoadBalancingGroup(Uint64 dpnId) {
289 return new StringBuilder().append("NextHopManager").append(dpnId).toString();