| /* |
| * Copyright 2018-2023 Open Networking Foundation (ONF) and the ONF Contributors |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.opencord.aaa; |
| |
| import com.google.common.base.MoreObjects; |
| import com.google.common.collect.ImmutableMap; |
| |
| /** |
| * Immutable snapshot of AAA statistics. |
| */ |
| public class AaaStatisticsSnapshot { |
| |
| private final ImmutableMap<String, Long> counters; |
| |
| /** |
| * Gets the value of a counter. |
| * |
| * @param counterName name of the counter |
| * @return counter value, or 0 if it doesn't exist |
| */ |
| public long get(String counterName) { |
| return counters.getOrDefault(counterName, 0L); |
| } |
| |
| /** |
| * Creates a new empty snapshot with all counters initialized to 0. |
| */ |
| public AaaStatisticsSnapshot() { |
| ImmutableMap.Builder<String, Long> builder = ImmutableMap.builder(); |
| |
| for (String name : AaaStatistics.COUNTER_NAMES) { |
| builder.put(name, 0L); |
| } |
| |
| counters = builder.build(); |
| } |
| |
| /** |
| * Creates a new snapshot with the given counter values. |
| * |
| * @param counters counter values |
| */ |
| public AaaStatisticsSnapshot(ImmutableMap<String, Long> counters) { |
| this.counters = counters; |
| } |
| |
| /** |
| * Adds the given snapshot to this snapshot and returns a new snapshot with the aggregate values. |
| * |
| * @param other other snapshot to add to this one |
| * @return new aggregate snapshot |
| */ |
| public AaaStatisticsSnapshot add(AaaStatisticsSnapshot other) { |
| ImmutableMap.Builder<String, Long> builder = ImmutableMap.builder(); |
| |
| counters.forEach((name, value) -> builder.put(name, value + other.counters.get(name))); |
| |
| return new AaaStatisticsSnapshot(builder.build()); |
| } |
| |
| public String toString() { |
| MoreObjects.ToStringHelper helper = MoreObjects.toStringHelper(this.getClass()); |
| counters.forEach(helper::add); |
| return helper.toString(); |
| } |
| |
| } |