Carmelo Cascone | 4c289b7 | 2019-01-22 15:30:45 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2019-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 | |
| 17 | package org.onosproject.p4runtime.ctl.codec; |
| 18 | |
| 19 | import org.onosproject.net.pi.model.PiPipeconf; |
| 20 | import org.onosproject.net.pi.model.PiTableId; |
| 21 | import org.onosproject.net.pi.runtime.PiAction; |
| 22 | import org.onosproject.net.pi.runtime.PiActionProfileGroupId; |
| 23 | import org.onosproject.net.pi.runtime.PiActionProfileMemberId; |
| 24 | import org.onosproject.net.pi.runtime.PiCounterCellData; |
| 25 | import org.onosproject.net.pi.runtime.PiMatchKey; |
| 26 | import org.onosproject.net.pi.runtime.PiTableAction; |
| 27 | import org.onosproject.net.pi.runtime.PiTableEntry; |
| 28 | import org.onosproject.net.pi.runtime.PiTableEntryHandle; |
| 29 | import org.onosproject.p4runtime.ctl.utils.P4InfoBrowser; |
| 30 | import p4.config.v1.P4InfoOuterClass; |
| 31 | import p4.v1.P4RuntimeOuterClass; |
| 32 | |
| 33 | import java.util.OptionalInt; |
| 34 | |
| 35 | import static com.google.common.base.Preconditions.checkNotNull; |
| 36 | import static java.lang.String.format; |
| 37 | import static org.onosproject.p4runtime.ctl.codec.Codecs.CODECS; |
| 38 | |
| 39 | /** |
| 40 | * Codec for P4Runtime TableEntry. |
| 41 | */ |
| 42 | public final class TableEntryCodec |
| 43 | extends AbstractEntityCodec<PiTableEntry, PiTableEntryHandle, |
| 44 | P4RuntimeOuterClass.TableEntry, Object> { |
| 45 | |
| 46 | @Override |
| 47 | protected P4RuntimeOuterClass.TableEntry encode( |
| 48 | PiTableEntry piTableEntry, Object ignored, PiPipeconf pipeconf, |
| 49 | P4InfoBrowser browser) |
| 50 | throws CodecException, P4InfoBrowser.NotFoundException { |
| 51 | final P4RuntimeOuterClass.TableEntry.Builder tableEntryMsgBuilder = |
| 52 | keyMsgBuilder(piTableEntry.table(), piTableEntry.matchKey(), |
| 53 | piTableEntry.priority(), pipeconf, browser); |
| 54 | // Controller metadata (cookie) |
| 55 | tableEntryMsgBuilder.setControllerMetadata(piTableEntry.cookie()); |
| 56 | // Timeout. |
| 57 | if (piTableEntry.timeout().isPresent()) { |
| 58 | // FIXME: timeout is supported in P4Runtime v1.0 |
| 59 | log.warn("Found PI table entry with timeout set, " + |
| 60 | "not supported in P4Runtime: {}", piTableEntry); |
| 61 | } |
| 62 | // Table action. |
| 63 | if (piTableEntry.action() != null) { |
| 64 | tableEntryMsgBuilder.setAction( |
| 65 | encodePiTableAction(piTableEntry.action(), pipeconf)); |
| 66 | } |
| 67 | // Counter. |
| 68 | if (piTableEntry.counter() != null) { |
| 69 | tableEntryMsgBuilder.setCounterData(encodeCounter(piTableEntry.counter())); |
| 70 | } |
| 71 | return tableEntryMsgBuilder.build(); |
| 72 | } |
| 73 | |
| 74 | @Override |
| 75 | protected P4RuntimeOuterClass.TableEntry encodeKey( |
| 76 | PiTableEntryHandle handle, Object metadata, PiPipeconf pipeconf, |
| 77 | P4InfoBrowser browser) throws CodecException, P4InfoBrowser.NotFoundException { |
| 78 | return keyMsgBuilder(handle.tableId(), handle.matchKey(), |
| 79 | handle.priority(), pipeconf, browser).build(); |
| 80 | } |
| 81 | |
| 82 | @Override |
| 83 | protected P4RuntimeOuterClass.TableEntry encodeKey( |
| 84 | PiTableEntry piEntity, Object metadata, PiPipeconf pipeconf, |
| 85 | P4InfoBrowser browser) throws CodecException, P4InfoBrowser.NotFoundException { |
| 86 | return keyMsgBuilder(piEntity.table(), piEntity.matchKey(), |
| 87 | piEntity.priority(), pipeconf, browser).build(); |
| 88 | } |
| 89 | |
| 90 | @SuppressWarnings("OptionalUsedAsFieldOrParameterType") |
| 91 | private P4RuntimeOuterClass.TableEntry.Builder keyMsgBuilder( |
| 92 | PiTableId tableId, PiMatchKey matchKey, OptionalInt priority, |
| 93 | PiPipeconf pipeconf, P4InfoBrowser browser) |
| 94 | throws P4InfoBrowser.NotFoundException, CodecException { |
| 95 | final P4RuntimeOuterClass.TableEntry.Builder tableEntryMsgBuilder = |
| 96 | P4RuntimeOuterClass.TableEntry.newBuilder(); |
| 97 | final P4InfoOuterClass.Preamble tablePreamble = browser.tables() |
| 98 | .getByName(tableId.id()).getPreamble(); |
| 99 | // Table id. |
| 100 | tableEntryMsgBuilder.setTableId(tablePreamble.getId()); |
| 101 | // Field matches. |
| 102 | if (matchKey.equals(PiMatchKey.EMPTY)) { |
| 103 | tableEntryMsgBuilder.setIsDefaultAction(true); |
| 104 | } else { |
| 105 | tableEntryMsgBuilder.addAllMatch( |
| 106 | CODECS.fieldMatch().encodeAll( |
| 107 | matchKey.fieldMatches(), |
| 108 | tablePreamble, pipeconf)); |
| 109 | } |
| 110 | // Priority. |
| 111 | priority.ifPresent(tableEntryMsgBuilder::setPriority); |
| 112 | return tableEntryMsgBuilder; |
| 113 | } |
| 114 | |
| 115 | @Override |
| 116 | protected PiTableEntry decode( |
| 117 | P4RuntimeOuterClass.TableEntry message, Object ignored, |
| 118 | PiPipeconf pipeconf, P4InfoBrowser browser) |
| 119 | throws CodecException, P4InfoBrowser.NotFoundException { |
| 120 | PiTableEntry.Builder piTableEntryBuilder = PiTableEntry.builder(); |
| 121 | |
| 122 | P4InfoOuterClass.Preamble tablePreamble = browser.tables() |
| 123 | .getById(message.getTableId()).getPreamble(); |
| 124 | |
| 125 | // Table id. |
| 126 | piTableEntryBuilder.forTable(PiTableId.of(tablePreamble.getName())); |
| 127 | |
| 128 | // Priority. |
| 129 | if (message.getPriority() > 0) { |
| 130 | piTableEntryBuilder.withPriority(message.getPriority()); |
| 131 | } |
| 132 | |
| 133 | // Controller metadata (cookie) |
| 134 | piTableEntryBuilder.withCookie(message.getControllerMetadata()); |
| 135 | |
| 136 | // Table action. |
| 137 | if (message.hasAction()) { |
| 138 | piTableEntryBuilder.withAction(decodeTableActionMsg( |
| 139 | message.getAction(), pipeconf)); |
| 140 | } |
| 141 | |
| 142 | // Timeout. |
| 143 | // FIXME: how to decode table entry messages with timeout, given that |
| 144 | // the timeout value is lost after encoding? |
| 145 | |
| 146 | // Match key for field matches. |
| 147 | piTableEntryBuilder.withMatchKey( |
| 148 | PiMatchKey.builder() |
| 149 | .addFieldMatches(CODECS.fieldMatch().decodeAll( |
| 150 | message.getMatchList(), |
| 151 | tablePreamble, pipeconf)) |
| 152 | .build()); |
| 153 | |
| 154 | // Counter. |
Carmelo Cascone | c32976e | 2019-04-08 14:50:52 -0700 | [diff] [blame] | 155 | if (message.hasCounterData()) { |
| 156 | piTableEntryBuilder.withCounterCellData(decodeCounter(message.getCounterData())); |
| 157 | } |
Carmelo Cascone | 4c289b7 | 2019-01-22 15:30:45 -0800 | [diff] [blame] | 158 | |
| 159 | return piTableEntryBuilder.build(); |
| 160 | } |
| 161 | |
| 162 | private P4RuntimeOuterClass.TableAction encodePiTableAction( |
| 163 | PiTableAction piTableAction, PiPipeconf pipeconf) |
| 164 | throws CodecException { |
| 165 | checkNotNull(piTableAction, "Cannot encode null PiTableAction"); |
| 166 | final P4RuntimeOuterClass.TableAction.Builder tableActionMsgBuilder = |
| 167 | P4RuntimeOuterClass.TableAction.newBuilder(); |
| 168 | switch (piTableAction.type()) { |
| 169 | case ACTION: |
| 170 | P4RuntimeOuterClass.Action theAction = CODECS.action() |
| 171 | .encode((PiAction) piTableAction, null, pipeconf); |
| 172 | tableActionMsgBuilder.setAction(theAction); |
| 173 | break; |
| 174 | case ACTION_PROFILE_GROUP_ID: |
| 175 | tableActionMsgBuilder.setActionProfileGroupId( |
| 176 | ((PiActionProfileGroupId) piTableAction).id()); |
| 177 | break; |
| 178 | case ACTION_PROFILE_MEMBER_ID: |
| 179 | tableActionMsgBuilder.setActionProfileMemberId( |
| 180 | ((PiActionProfileMemberId) piTableAction).id()); |
| 181 | break; |
| 182 | default: |
| 183 | throw new CodecException( |
| 184 | format("Building of table action type %s not implemented", |
| 185 | piTableAction.type())); |
| 186 | } |
| 187 | return tableActionMsgBuilder.build(); |
| 188 | } |
| 189 | |
| 190 | private PiTableAction decodeTableActionMsg( |
| 191 | P4RuntimeOuterClass.TableAction tableActionMsg, PiPipeconf pipeconf) |
| 192 | throws CodecException { |
| 193 | P4RuntimeOuterClass.TableAction.TypeCase typeCase = tableActionMsg.getTypeCase(); |
| 194 | switch (typeCase) { |
| 195 | case ACTION: |
| 196 | P4RuntimeOuterClass.Action actionMsg = tableActionMsg.getAction(); |
| 197 | return CODECS.action().decode( |
| 198 | actionMsg, null, pipeconf); |
| 199 | case ACTION_PROFILE_GROUP_ID: |
| 200 | return PiActionProfileGroupId.of( |
| 201 | tableActionMsg.getActionProfileGroupId()); |
| 202 | case ACTION_PROFILE_MEMBER_ID: |
| 203 | return PiActionProfileMemberId.of( |
| 204 | tableActionMsg.getActionProfileMemberId()); |
| 205 | default: |
| 206 | throw new CodecException( |
| 207 | format("Decoding of table action type %s not implemented", |
| 208 | typeCase.name())); |
| 209 | } |
| 210 | } |
| 211 | |
| 212 | private P4RuntimeOuterClass.CounterData encodeCounter( |
| 213 | PiCounterCellData piCounterCellData) { |
| 214 | return P4RuntimeOuterClass.CounterData.newBuilder() |
| 215 | .setPacketCount(piCounterCellData.packets()) |
| 216 | .setByteCount(piCounterCellData.bytes()).build(); |
| 217 | } |
| 218 | |
| 219 | private PiCounterCellData decodeCounter( |
| 220 | P4RuntimeOuterClass.CounterData counterData) { |
| 221 | return new PiCounterCellData( |
| 222 | counterData.getPacketCount(), counterData.getByteCount()); |
| 223 | } |
| 224 | } |