karthik1977 | bc5ea1e | 2023-01-02 19:25:14 +0530 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2023-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.netflow; |
| 17 | |
| 18 | import static com.google.common.base.Preconditions.checkNotNull; |
| 19 | |
| 20 | import java.util.Objects; |
| 21 | |
| 22 | import com.google.common.base.MoreObjects; |
| 23 | |
| 24 | /** |
| 25 | * Flow is a collection of Flow Data Record(s). |
| 26 | * each containing a set of field values. The Type and |
| 27 | * Length of the fields have been previously defined in the |
| 28 | * Template Record referenced by the FlowSet ID or Template ID. |
| 29 | * Ref: https://www.ietf.org/rfc/rfc3954.txt |
| 30 | */ |
| 31 | public final class Flow { |
| 32 | |
| 33 | /* |
| 34 | 0 1 2 3 |
| 35 | 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 |
| 36 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 37 | | Record 1 - Field Value 1 | Record 1 - Field Value 2 | |
| 38 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 39 | */ |
| 40 | |
| 41 | private FlowField field; |
| 42 | |
| 43 | private Object value; |
| 44 | |
| 45 | private Flow(Builder builder) { |
| 46 | this.field = builder.field; |
| 47 | this.value = builder.value; |
| 48 | } |
| 49 | |
| 50 | /** |
| 51 | * The getter for flow fields. |
| 52 | * |
| 53 | * @return flow field |
| 54 | */ |
| 55 | public FlowField getField() { |
| 56 | return field; |
| 57 | } |
| 58 | |
| 59 | /** |
| 60 | * Returns flow value. |
| 61 | * |
| 62 | * @return flow value |
| 63 | */ |
| 64 | public Object getValue() { |
| 65 | return value; |
| 66 | } |
| 67 | |
| 68 | /* |
| 69 | * (non-Javadoc) |
| 70 | * |
| 71 | * @see java.lang.Object#equals(java.lang.Object) |
| 72 | */ |
| 73 | @Override |
| 74 | public int hashCode() { |
| 75 | int hash = 5; |
| 76 | hash = 23 * hash + Objects.hashCode(this.field); |
| 77 | hash = 23 * hash + Objects.hashCode(this.value); |
| 78 | return hash; |
| 79 | } |
| 80 | |
| 81 | /* |
| 82 | * (non-Javadoc) |
| 83 | * |
| 84 | * @see java.lang.Object#equals(java.lang.Object) |
| 85 | */ |
| 86 | @Override |
| 87 | public boolean equals(Object obj) { |
| 88 | if (this == obj) { |
| 89 | return true; |
| 90 | } |
| 91 | if (obj == null) { |
| 92 | return false; |
| 93 | } |
| 94 | if (getClass() != obj.getClass()) { |
| 95 | return false; |
| 96 | } |
| 97 | final Flow other = (Flow) obj; |
| 98 | if (this.field != other.field) { |
| 99 | return false; |
| 100 | } |
| 101 | return Objects.equals(this.value, other.value); |
| 102 | } |
| 103 | |
| 104 | @Override |
| 105 | public String toString() { |
| 106 | return MoreObjects.toStringHelper(getClass()) |
| 107 | .add("field", field) |
| 108 | .add("value", value) |
| 109 | .toString(); |
| 110 | } |
| 111 | |
| 112 | /** |
| 113 | * Flow data value builder. |
| 114 | */ |
| 115 | public static class Builder { |
| 116 | |
| 117 | private FlowField field; |
| 118 | |
| 119 | private Object value; |
| 120 | |
| 121 | /** |
| 122 | * Setter for flow fields. |
| 123 | * |
| 124 | * @param field flow field. |
| 125 | * @return this class builder. |
| 126 | */ |
| 127 | public Builder field(FlowField field) { |
| 128 | this.field = field; |
| 129 | return this; |
| 130 | } |
| 131 | |
| 132 | /** |
| 133 | * Setter for flow data value. |
| 134 | * |
| 135 | * @param value flow data value. |
| 136 | * @return this class builder. |
| 137 | */ |
| 138 | public Builder value(Object value) { |
| 139 | this.value = value; |
| 140 | return this; |
| 141 | } |
| 142 | |
| 143 | /** |
| 144 | * Checks arguments for flow data value. |
| 145 | */ |
| 146 | private void checkArguments() { |
| 147 | checkNotNull(field, "flow field cannot be null"); |
| 148 | checkNotNull(value, "value cannot be null"); |
| 149 | } |
| 150 | |
| 151 | /** |
| 152 | * Builds data flow. |
| 153 | * |
| 154 | * @return data flow object. |
| 155 | */ |
| 156 | public Flow build() { |
| 157 | checkArguments(); |
| 158 | return new Flow(this); |
| 159 | } |
| 160 | |
| 161 | } |
| 162 | |
| 163 | } |