Ray Milkey | b82c42b | 2015-06-30 09:42:20 -0700 | [diff] [blame] | 1 | /* |
Brian O'Connor | a09fe5b | 2017-08-03 21:12:30 -0700 | [diff] [blame] | 2 | * Copyright 2015-present Open Networking Foundation |
Ray Milkey | b82c42b | 2015-06-30 09:42:20 -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.codec.impl; |
| 17 | |
| 18 | import org.onosproject.codec.CodecContext; |
| 19 | import org.onosproject.net.DeviceId; |
| 20 | import org.onosproject.net.Link; |
| 21 | import org.onosproject.net.intent.Constraint; |
| 22 | import org.onosproject.net.intent.constraint.AnnotationConstraint; |
| 23 | import org.onosproject.net.intent.constraint.BandwidthConstraint; |
Ray Milkey | b82c42b | 2015-06-30 09:42:20 -0700 | [diff] [blame] | 24 | import org.onosproject.net.intent.constraint.LatencyConstraint; |
| 25 | import org.onosproject.net.intent.constraint.LinkTypeConstraint; |
| 26 | import org.onosproject.net.intent.constraint.ObstacleConstraint; |
| 27 | import org.onosproject.net.intent.constraint.WaypointConstraint; |
| 28 | |
| 29 | import com.fasterxml.jackson.databind.node.ArrayNode; |
| 30 | import com.fasterxml.jackson.databind.node.ObjectNode; |
| 31 | |
| 32 | import static com.google.common.base.Preconditions.checkNotNull; |
| 33 | |
| 34 | /** |
| 35 | * Implementation of encoder for constraint JSON codec. |
| 36 | */ |
Ray Milkey | 6d7968e | 2015-07-06 14:30:02 -0700 | [diff] [blame] | 37 | public final class EncodeConstraintCodecHelper { |
Ray Milkey | b82c42b | 2015-06-30 09:42:20 -0700 | [diff] [blame] | 38 | |
| 39 | private final Constraint constraint; |
| 40 | private final CodecContext context; |
| 41 | |
| 42 | /** |
| 43 | * Constructs a constraint encoder. |
| 44 | * |
| 45 | * @param constraint constraint to encode |
| 46 | * @param context to use for look ups |
| 47 | */ |
Ray Milkey | 6d7968e | 2015-07-06 14:30:02 -0700 | [diff] [blame] | 48 | public EncodeConstraintCodecHelper(Constraint constraint, CodecContext context) { |
Ray Milkey | b82c42b | 2015-06-30 09:42:20 -0700 | [diff] [blame] | 49 | this.constraint = constraint; |
| 50 | this.context = context; |
| 51 | } |
| 52 | |
| 53 | /** |
| 54 | * Encodes a latency constraint. |
| 55 | * |
| 56 | * @return JSON ObjectNode representing the constraint |
| 57 | */ |
| 58 | private ObjectNode encodeLatencyConstraint() { |
| 59 | checkNotNull(constraint, "Duration constraint cannot be null"); |
| 60 | final LatencyConstraint latencyConstraint = |
| 61 | (LatencyConstraint) constraint; |
| 62 | return context.mapper().createObjectNode() |
| 63 | .put("latencyMillis", latencyConstraint.latency().toMillis()); |
| 64 | } |
| 65 | |
| 66 | /** |
| 67 | * Encodes an obstacle constraint. |
| 68 | * |
| 69 | * @return JSON ObjectNode representing the constraint |
| 70 | */ |
| 71 | private ObjectNode encodeObstacleConstraint() { |
| 72 | checkNotNull(constraint, "Obstacle constraint cannot be null"); |
| 73 | final ObstacleConstraint obstacleConstraint = |
| 74 | (ObstacleConstraint) constraint; |
| 75 | |
| 76 | final ObjectNode result = context.mapper().createObjectNode(); |
| 77 | final ArrayNode jsonObstacles = result.putArray("obstacles"); |
| 78 | |
| 79 | for (DeviceId did : obstacleConstraint.obstacles()) { |
| 80 | jsonObstacles.add(did.toString()); |
| 81 | } |
| 82 | |
| 83 | return result; |
| 84 | } |
| 85 | |
| 86 | /** |
| 87 | * Encodes a waypoint constraint. |
| 88 | * |
| 89 | * @return JSON ObjectNode representing the constraint |
| 90 | */ |
| 91 | private ObjectNode encodeWaypointConstraint() { |
| 92 | checkNotNull(constraint, "Waypoint constraint cannot be null"); |
| 93 | final WaypointConstraint waypointConstraint = |
| 94 | (WaypointConstraint) constraint; |
| 95 | |
| 96 | final ObjectNode result = context.mapper().createObjectNode(); |
| 97 | final ArrayNode jsonWaypoints = result.putArray("waypoints"); |
| 98 | |
| 99 | for (DeviceId did : waypointConstraint.waypoints()) { |
| 100 | jsonWaypoints.add(did.toString()); |
| 101 | } |
| 102 | |
| 103 | return result; |
| 104 | } |
| 105 | |
| 106 | /** |
| 107 | * Encodes a annotation constraint. |
| 108 | * |
| 109 | * @return JSON ObjectNode representing the constraint |
| 110 | */ |
| 111 | private ObjectNode encodeAnnotationConstraint() { |
| 112 | checkNotNull(constraint, "Annotation constraint cannot be null"); |
| 113 | final AnnotationConstraint annotationConstraint = |
| 114 | (AnnotationConstraint) constraint; |
| 115 | return context.mapper().createObjectNode() |
| 116 | .put("key", annotationConstraint.key()) |
| 117 | .put("threshold", annotationConstraint.threshold()); |
| 118 | } |
| 119 | |
| 120 | /** |
| 121 | * Encodes a bandwidth constraint. |
| 122 | * |
| 123 | * @return JSON ObjectNode representing the constraint |
| 124 | */ |
| 125 | private ObjectNode encodeBandwidthConstraint() { |
| 126 | checkNotNull(constraint, "Bandwidth constraint cannot be null"); |
| 127 | final BandwidthConstraint bandwidthConstraint = |
| 128 | (BandwidthConstraint) constraint; |
| 129 | return context.mapper().createObjectNode() |
Sho SHIMIZU | a88db49 | 2015-11-23 13:21:04 -0800 | [diff] [blame] | 130 | .put("bandwidth", bandwidthConstraint.bandwidth().bps()); |
Ray Milkey | b82c42b | 2015-06-30 09:42:20 -0700 | [diff] [blame] | 131 | } |
| 132 | |
| 133 | /** |
Ray Milkey | b82c42b | 2015-06-30 09:42:20 -0700 | [diff] [blame] | 134 | * Encodes a link type constraint. |
| 135 | * |
| 136 | * @return JSON ObjectNode representing the constraint |
| 137 | */ |
| 138 | private ObjectNode encodeLinkTypeConstraint() { |
| 139 | checkNotNull(constraint, "Link type constraint cannot be null"); |
| 140 | |
| 141 | final LinkTypeConstraint linkTypeConstraint = |
| 142 | (LinkTypeConstraint) constraint; |
| 143 | |
| 144 | final ObjectNode result = context.mapper().createObjectNode() |
| 145 | .put(ConstraintCodec.INCLUSIVE, linkTypeConstraint.isInclusive()); |
| 146 | |
| 147 | final ArrayNode jsonTypes = result.putArray(ConstraintCodec.TYPES); |
| 148 | |
| 149 | if (linkTypeConstraint.types() != null) { |
| 150 | for (Link.Type type : linkTypeConstraint.types()) { |
| 151 | jsonTypes.add(type.name()); |
| 152 | } |
| 153 | } |
| 154 | |
| 155 | return result; |
| 156 | } |
| 157 | |
| 158 | /** |
| 159 | * Encodes the constraint in JSON. |
| 160 | * |
| 161 | * @return JSON node |
| 162 | */ |
| 163 | public ObjectNode encode() { |
| 164 | final ObjectNode result; |
| 165 | if (constraint instanceof BandwidthConstraint) { |
| 166 | result = encodeBandwidthConstraint(); |
Ray Milkey | b82c42b | 2015-06-30 09:42:20 -0700 | [diff] [blame] | 167 | } else if (constraint instanceof LinkTypeConstraint) { |
| 168 | result = encodeLinkTypeConstraint(); |
| 169 | } else if (constraint instanceof AnnotationConstraint) { |
| 170 | result = encodeAnnotationConstraint(); |
| 171 | } else if (constraint instanceof LatencyConstraint) { |
| 172 | result = encodeLatencyConstraint(); |
| 173 | } else if (constraint instanceof ObstacleConstraint) { |
| 174 | result = encodeObstacleConstraint(); |
| 175 | } else if (constraint instanceof WaypointConstraint) { |
| 176 | result = encodeWaypointConstraint(); |
| 177 | } else { |
| 178 | result = context.mapper().createObjectNode(); |
| 179 | } |
| 180 | |
| 181 | result.put(ConstraintCodec.TYPE, constraint.getClass().getSimpleName()); |
| 182 | return result; |
| 183 | } |
| 184 | } |