Jian Li | 44155b0 | 2017-02-15 17:03:38 +0900 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2017-present Open Networking Laboratory |
| 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.mapping; |
| 17 | |
| 18 | import com.google.common.base.MoreObjects; |
| 19 | import com.google.common.collect.ImmutableList; |
| 20 | import com.google.common.collect.Lists; |
| 21 | import com.google.common.collect.Maps; |
| 22 | import org.onosproject.mapping.addresses.MappingAddress; |
| 23 | import org.onosproject.mapping.instructions.MappingInstruction; |
| 24 | import org.onosproject.mapping.instructions.MappingInstructions; |
| 25 | import org.onosproject.mapping.instructions.MulticastMappingInstruction; |
| 26 | import org.onosproject.mapping.instructions.MulticastMappingInstruction.MulticastType; |
| 27 | import org.onosproject.mapping.instructions.UnicastMappingInstruction; |
| 28 | import org.onosproject.mapping.instructions.UnicastMappingInstruction.UnicastType; |
| 29 | import org.onosproject.net.DeviceId; |
| 30 | import org.onosproject.net.flow.instructions.ExtensionTreatment; |
| 31 | |
| 32 | import java.util.List; |
| 33 | import java.util.Map; |
| 34 | import java.util.Objects; |
| 35 | |
| 36 | import static com.google.common.base.Preconditions.checkArgument; |
| 37 | import static com.google.common.base.Preconditions.checkNotNull; |
| 38 | |
| 39 | /** |
| 40 | * Default implementation of mapping treatment. |
| 41 | */ |
| 42 | public final class DefaultMappingTreatment implements MappingTreatment { |
| 43 | |
| 44 | private final List<MappingInstruction> instructions; |
| 45 | private final MappingAddress address; |
| 46 | |
| 47 | /** |
| 48 | * Create a new mapping treatment from the specified list of mapping instructions. |
| 49 | * |
| 50 | * @param instructions mapping instructions |
| 51 | */ |
| 52 | private DefaultMappingTreatment(MappingAddress address, |
| 53 | List<MappingInstruction> instructions) { |
| 54 | this.address = address; |
| 55 | this.instructions = ImmutableList.copyOf(checkNotNull(instructions)); |
| 56 | } |
| 57 | |
| 58 | @Override |
| 59 | public MappingAddress address() { |
| 60 | return address; |
| 61 | } |
| 62 | |
| 63 | @Override |
| 64 | public List<MappingInstruction> instructions() { |
| 65 | return ImmutableList.copyOf(instructions); |
| 66 | } |
| 67 | |
| 68 | @Override |
| 69 | public int hashCode() { |
| 70 | return Objects.hash(address, instructions); |
| 71 | } |
| 72 | |
| 73 | @Override |
| 74 | public boolean equals(Object obj) { |
| 75 | if (this == obj) { |
| 76 | return true; |
| 77 | } |
| 78 | if (obj instanceof DefaultMappingTreatment) { |
| 79 | DefaultMappingTreatment that = (DefaultMappingTreatment) obj; |
| 80 | return Objects.equals(address, that.address) && |
| 81 | Objects.equals(instructions, that.instructions); |
| 82 | } |
| 83 | return false; |
| 84 | } |
| 85 | |
| 86 | @Override |
| 87 | public String toString() { |
| 88 | return MoreObjects.toStringHelper(getClass()) |
| 89 | .add("address", address) |
| 90 | .add("mapping instructions", instructions) |
| 91 | .toString(); |
| 92 | } |
| 93 | |
| 94 | /** |
| 95 | * Returns a new mapping treatment builder. |
| 96 | * |
| 97 | * @return mapping treatment builder |
| 98 | */ |
| 99 | public static Builder builder() { |
| 100 | return new Builder(); |
| 101 | } |
| 102 | |
| 103 | /** |
| 104 | * Returns a new mapping treatment builder primed to produce entities |
| 105 | * patterned after the supplied mapping treatment. |
| 106 | * |
| 107 | * @param treatment base mapping treatment |
| 108 | * @return mapping treatment builder |
| 109 | */ |
| 110 | public static Builder builder(MappingTreatment treatment) { |
| 111 | return new Builder(treatment); |
| 112 | } |
| 113 | |
| 114 | /** |
| 115 | * Builds a mapping treatment. |
| 116 | */ |
| 117 | public static final class Builder implements MappingTreatment.Builder { |
| 118 | |
| 119 | private List<MappingInstruction> instructions = Lists.newArrayList(); |
| 120 | private MappingAddress address; |
| 121 | private Map<UnicastType, Integer> unicastTypeMap = Maps.newConcurrentMap(); |
| 122 | private Map<MulticastType, Integer> multicastTypeMap = Maps.newConcurrentMap(); |
| 123 | |
| 124 | // creates a new builder |
| 125 | private Builder() { |
| 126 | initTypeMap(); |
| 127 | } |
| 128 | |
| 129 | // creates a new builder based off an existing mapping treatment |
| 130 | private Builder(MappingTreatment treatment) { |
| 131 | treatment.instructions().forEach(i -> instructions.add(i)); |
| 132 | address = treatment.address(); |
| 133 | initTypeMap(); |
| 134 | } |
| 135 | |
| 136 | /** |
| 137 | * Initializes type map. |
| 138 | */ |
| 139 | private void initTypeMap() { |
| 140 | unicastTypeMap.put(UnicastType.WEIGHT, 0); |
| 141 | unicastTypeMap.put(UnicastType.PRIORITY, 0); |
| 142 | multicastTypeMap.put(MulticastType.WEIGHT, 0); |
| 143 | multicastTypeMap.put(MulticastType.PRIORITY, 0); |
| 144 | } |
| 145 | |
| 146 | @Override |
| 147 | public Builder withAddress(MappingAddress address) { |
| 148 | this.address = address; |
| 149 | return this; |
| 150 | } |
| 151 | |
| 152 | @Override |
| 153 | public Builder add(MappingInstruction instruction) { |
| 154 | |
| 155 | switch (instruction.type()) { |
| 156 | case UNICAST: |
| 157 | unicastTypeMap.compute(((UnicastMappingInstruction) |
| 158 | instruction).subtype(), (k, v) -> v + 1); |
| 159 | instructions.add(instruction); |
| 160 | break; |
| 161 | case MULTICAST: |
| 162 | multicastTypeMap.compute(((MulticastMappingInstruction) |
| 163 | instruction).subtype(), (k, v) -> v + 1); |
| 164 | instructions.add(instruction); |
| 165 | break; |
| 166 | case EXTENSION: |
| 167 | instructions.add(instruction); |
| 168 | break; |
| 169 | default: |
| 170 | throw new IllegalArgumentException("Unknown mapping " + |
| 171 | "instruction type: " + instruction.type()); |
| 172 | } |
| 173 | |
| 174 | return this; |
| 175 | } |
| 176 | |
| 177 | @Override |
| 178 | public Builder setUnicastWeight(int weight) { |
| 179 | return add(MappingInstructions.unicastWeight(weight)); |
| 180 | } |
| 181 | |
| 182 | @Override |
| 183 | public Builder setUnicastPriority(int priority) { |
| 184 | return add(MappingInstructions.unicastPriority(priority)); |
| 185 | } |
| 186 | |
| 187 | @Override |
| 188 | public Builder setMulticastWeight(int weight) { |
| 189 | return add(MappingInstructions.multicastWeight(weight)); |
| 190 | } |
| 191 | |
| 192 | @Override |
| 193 | public Builder setMulticastPriority(int priority) { |
| 194 | return add(MappingInstructions.multicastPriority(priority)); |
| 195 | } |
| 196 | |
| 197 | @Override |
| 198 | public Builder extension(ExtensionTreatment extension, DeviceId deviceId) { |
| 199 | return add(MappingInstructions.extension(extension, deviceId)); |
| 200 | } |
| 201 | |
| 202 | @Override |
| 203 | public MappingTreatment build() { |
| 204 | |
| 205 | unicastTypeMap.forEach((k, v) -> checkArgument(v <= 1, |
| 206 | "Should not specify more than one " + k.toString())); |
| 207 | multicastTypeMap.forEach((k, v) -> checkArgument(v <= 1, |
| 208 | "Should not specify more than one " + k.toString())); |
| 209 | |
| 210 | return new DefaultMappingTreatment(address, instructions); |
| 211 | } |
| 212 | } |
| 213 | } |