Jian Li | 26ef130 | 2018-07-04 14:37:06 +0900 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2018-present Open Networking Foundation |
| 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.openstackvtap.util; |
| 17 | |
| 18 | import org.onlab.packet.IPv4; |
Jimo Jung | 14e87bf | 2018-09-03 16:28:13 +0900 | [diff] [blame^] | 19 | import org.onlab.packet.IpAddress; |
| 20 | import org.onlab.packet.IpPrefix; |
| 21 | import org.onosproject.net.Host; |
| 22 | import org.onosproject.net.behaviour.TunnelDescription; |
Jian Li | 26ef130 | 2018-07-04 14:37:06 +0900 | [diff] [blame] | 23 | import org.onosproject.net.group.DefaultGroupKey; |
| 24 | import org.onosproject.net.group.GroupKey; |
| 25 | import org.onosproject.openstackvtap.api.OpenstackVtap; |
Jimo Jung | 14e87bf | 2018-09-03 16:28:13 +0900 | [diff] [blame^] | 26 | import org.onosproject.openstackvtap.api.OpenstackVtapCriterion; |
| 27 | import org.onosproject.openstackvtap.api.OpenstackVtapNetwork; |
| 28 | import org.slf4j.Logger; |
| 29 | |
| 30 | import java.io.ByteArrayOutputStream; |
| 31 | import java.io.PrintStream; |
| 32 | import java.nio.charset.StandardCharsets; |
| 33 | |
| 34 | import static org.onosproject.openstacknetworking.api.Constants.ANNOTATION_NETWORK_ID; |
| 35 | import static org.onosproject.openstacknetworking.api.Constants.ANNOTATION_PORT_ID; |
Jian Li | 26ef130 | 2018-07-04 14:37:06 +0900 | [diff] [blame] | 36 | |
| 37 | /** |
Jimo Jung | 14e87bf | 2018-09-03 16:28:13 +0900 | [diff] [blame^] | 38 | * An utilities that used in openstack vtap app. |
Jian Li | 26ef130 | 2018-07-04 14:37:06 +0900 | [diff] [blame] | 39 | */ |
| 40 | public final class OpenstackVtapUtil { |
| 41 | |
Jimo Jung | 14e87bf | 2018-09-03 16:28:13 +0900 | [diff] [blame^] | 42 | private static final String VTAP_TUNNEL_GRE = "vtap_gre"; |
| 43 | private static final String VTAP_TUNNEL_VXLAN = "vtap_vxlan"; |
Jian Li | 26ef130 | 2018-07-04 14:37:06 +0900 | [diff] [blame] | 44 | private static final String VTAP_GROUP_KEY = "VTAP_GROUP_KEY"; |
| 45 | |
| 46 | /** |
| 47 | * Prevents object instantiation from external. |
| 48 | */ |
| 49 | private OpenstackVtapUtil() { |
| 50 | } |
| 51 | |
| 52 | /** |
Jian Li | 26ef130 | 2018-07-04 14:37:06 +0900 | [diff] [blame] | 53 | * Obtains IP protocol type from the given string. |
| 54 | * |
Jimo Jung | 14e87bf | 2018-09-03 16:28:13 +0900 | [diff] [blame^] | 55 | * @param str protocol string |
| 56 | * @return IP protocol number |
Jian Li | 26ef130 | 2018-07-04 14:37:06 +0900 | [diff] [blame] | 57 | */ |
| 58 | public static byte getProtocolTypeFromString(String str) { |
| 59 | switch (str) { |
| 60 | case "tcp": |
| 61 | return IPv4.PROTOCOL_TCP; |
| 62 | case "udp": |
| 63 | return IPv4.PROTOCOL_UDP; |
| 64 | case "icmp": |
| 65 | return IPv4.PROTOCOL_ICMP; |
Jimo Jung | 14e87bf | 2018-09-03 16:28:13 +0900 | [diff] [blame^] | 66 | case "any": |
Jian Li | 26ef130 | 2018-07-04 14:37:06 +0900 | [diff] [blame] | 67 | return 0; |
Jimo Jung | 14e87bf | 2018-09-03 16:28:13 +0900 | [diff] [blame^] | 68 | default: |
| 69 | throw new IllegalArgumentException("Invalid vtap protocol string"); |
Jian Li | 26ef130 | 2018-07-04 14:37:06 +0900 | [diff] [blame] | 70 | } |
| 71 | } |
| 72 | |
Jimo Jung | 14e87bf | 2018-09-03 16:28:13 +0900 | [diff] [blame^] | 73 | /** |
| 74 | * Obtains openstack vtap type from the given string. |
| 75 | * |
| 76 | * @param str vtap type string |
| 77 | * @return vtap type |
| 78 | */ |
| 79 | public static OpenstackVtap.Type getVtapTypeFromString(String str) { |
| 80 | switch (str) { |
| 81 | case "all": |
| 82 | return OpenstackVtap.Type.VTAP_ALL; |
| 83 | case "rx": |
| 84 | return OpenstackVtap.Type.VTAP_RX; |
| 85 | case "tx": |
| 86 | return OpenstackVtap.Type.VTAP_TX; |
| 87 | case "any": |
| 88 | return OpenstackVtap.Type.VTAP_ANY; |
| 89 | default: |
| 90 | throw new IllegalArgumentException("Invalid vtap type string"); |
| 91 | } |
| 92 | } |
| 93 | |
| 94 | /** |
| 95 | * Checks whether the given IP address is included in vtap criterion with |
| 96 | * TX and RX directions by given vtap type. |
| 97 | * |
| 98 | * @param type vtap type |
| 99 | * @param criterion vtap criterion |
| 100 | * @param ip IP address to check |
| 101 | * @return true on match address, false otherwise |
| 102 | */ |
| 103 | public static boolean containsIp(OpenstackVtap.Type type, OpenstackVtapCriterion criterion, IpAddress ip) { |
| 104 | boolean isTxEdge = type.isValid(OpenstackVtap.Type.VTAP_TX) && |
| 105 | criterion.srcIpPrefix().contains(ip); |
| 106 | boolean isRxEdge = type.isValid(OpenstackVtap.Type.VTAP_RX) && |
| 107 | criterion.dstIpPrefix().contains(ip); |
| 108 | return isTxEdge || isRxEdge; |
| 109 | } |
| 110 | |
| 111 | /** |
| 112 | * Checks the host validation from annotation information. |
| 113 | * |
| 114 | * @param host host to check |
| 115 | * @return true on validate, false otherwise |
| 116 | */ |
| 117 | public static boolean isValidHost(Host host) { |
| 118 | return !host.ipAddresses().isEmpty() && |
| 119 | host.annotations().value(ANNOTATION_NETWORK_ID) != null && |
| 120 | host.annotations().value(ANNOTATION_PORT_ID) != null; |
| 121 | } |
| 122 | |
| 123 | /** |
| 124 | * Checks whether the given IP prefix is contained in the first host rather |
| 125 | * than in the second host. |
| 126 | * |
| 127 | * @param host1 first host instance |
| 128 | * @param host2 second host instance |
| 129 | * @param ipPrefix IP prefix to be looked up |
| 130 | * @return a negative integer, zero, or a positive integer as the |
| 131 | * first argument is less than, equal to, or greater than the |
| 132 | * second. |
| 133 | */ |
| 134 | public static int hostCompareIp(Host host1, Host host2, IpPrefix ipPrefix) { |
| 135 | if ((host1 == null || host1.ipAddresses().stream().noneMatch(ipPrefix::contains)) && |
| 136 | (host2 != null || host2.ipAddresses().stream().anyMatch(ipPrefix::contains))) { |
| 137 | return -1; |
| 138 | } else if ((host1 != null && host1.ipAddresses().stream().anyMatch(ipPrefix::contains)) && |
| 139 | (host2 == null || host2.ipAddresses().stream().noneMatch(ipPrefix::contains))) { |
| 140 | return 1; |
| 141 | } |
| 142 | return 0; |
| 143 | } |
| 144 | |
| 145 | /** |
| 146 | * Obtains flow group key from the given id. |
| 147 | * |
| 148 | * @param groupId flow group identifier |
| 149 | * @return flow group key |
| 150 | */ |
Jian Li | 26ef130 | 2018-07-04 14:37:06 +0900 | [diff] [blame] | 151 | public static GroupKey getGroupKey(int groupId) { |
| 152 | return new DefaultGroupKey((VTAP_GROUP_KEY + Integer.toString(groupId)).getBytes()); |
| 153 | } |
Jimo Jung | 14e87bf | 2018-09-03 16:28:13 +0900 | [diff] [blame^] | 154 | |
| 155 | /** |
| 156 | * Obtains tunnel interface name from the given openstack vtap network mode. |
| 157 | * |
| 158 | * @param mode vtap network mode |
| 159 | * @return tunnel interface name |
| 160 | */ |
| 161 | public static String getTunnelName(OpenstackVtapNetwork.Mode mode) { |
| 162 | switch (mode) { |
| 163 | case GRE: |
| 164 | return VTAP_TUNNEL_GRE; |
| 165 | case VXLAN: |
| 166 | return VTAP_TUNNEL_VXLAN; |
| 167 | default: |
| 168 | return null; |
| 169 | } |
| 170 | } |
| 171 | |
| 172 | /** |
| 173 | * Obtains tunnel description type from the given openstack vtap network mode. |
| 174 | * |
| 175 | * @param mode vtap network mode |
| 176 | * @return tunnel description type |
| 177 | */ |
| 178 | public static TunnelDescription.Type getTunnelType(OpenstackVtapNetwork.Mode mode) { |
| 179 | return TunnelDescription.Type.valueOf(mode.toString()); |
| 180 | } |
| 181 | |
| 182 | /** |
| 183 | * Print stack trace of given exception. |
| 184 | * |
| 185 | * @param log logger for using print |
| 186 | * @param e exception to print |
| 187 | */ |
| 188 | public static void dumpStackTrace(Logger log, Exception e) { |
| 189 | ByteArrayOutputStream outputStream = new ByteArrayOutputStream(); |
| 190 | e.printStackTrace(new PrintStream(outputStream)); |
| 191 | log.error("\n{}", new String(outputStream.toByteArray(), StandardCharsets.UTF_8)); |
| 192 | } |
| 193 | |
Jian Li | 26ef130 | 2018-07-04 14:37:06 +0900 | [diff] [blame] | 194 | } |