| /* |
| * Copyright 2020-present Open Networking Foundation |
| * |
| * 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 |
| */ |
| |
| package org.opencord.dhcpl2relay.impl; |
| |
| import com.google.common.base.MoreObjects; |
| import com.google.common.collect.ImmutableMap; |
| import com.google.common.collect.Sets; |
| |
| import java.util.Map; |
| import java.util.Set; |
| |
| /** |
| * Snapshot of DHCP L2 Relay statistics. |
| */ |
| public class DhcpL2RelayStatistics { |
| |
| private final ImmutableMap<DhcpL2RelayCountersIdentifier, Long> counters; |
| |
| private DhcpL2RelayStatistics(ImmutableMap<DhcpL2RelayCountersIdentifier, Long> counters) { |
| this.counters = counters; |
| } |
| |
| /** |
| * Creates a new empty statistics instance. |
| */ |
| public DhcpL2RelayStatistics() { |
| counters = ImmutableMap.of(); |
| } |
| |
| /** |
| * Gets the value of the counter with the given ID. Defaults to 0 if counter is not present. |
| * |
| * @param id counter ID |
| * @return counter value |
| */ |
| public long get(DhcpL2RelayCountersIdentifier id) { |
| return counters.getOrDefault(id, 0L); |
| } |
| |
| /** |
| * Gets the map of counters. |
| * |
| * @return map of counters |
| */ |
| public Map<DhcpL2RelayCountersIdentifier, Long> counters() { |
| return counters; |
| } |
| |
| /** |
| * Creates a new statistics instance with the given counter values. |
| * |
| * @param counters counters |
| * @return statistics |
| */ |
| public static DhcpL2RelayStatistics withCounters(Map<DhcpL2RelayCountersIdentifier, Long> counters) { |
| ImmutableMap.Builder<DhcpL2RelayCountersIdentifier, Long> builder = ImmutableMap.builder(); |
| |
| counters.forEach(builder::put); |
| |
| return new DhcpL2RelayStatistics(builder.build()); |
| } |
| |
| /** |
| * Adds the given statistics instance to this one (sums the common counters) and returns |
| * a new instance containing the result. |
| * |
| * @param other other instance |
| * @return result |
| */ |
| public DhcpL2RelayStatistics add(DhcpL2RelayStatistics other) { |
| ImmutableMap.Builder<DhcpL2RelayCountersIdentifier, Long> builder = ImmutableMap.builder(); |
| |
| Set<DhcpL2RelayCountersIdentifier> keys = Sets.newHashSet(other.counters.keySet()); |
| |
| counters.forEach((id, value) -> { |
| builder.put(id, value + other.counters.getOrDefault(id, 0L)); |
| keys.remove(id); |
| }); |
| |
| keys.forEach(i -> builder.put(i, other.counters.get(i))); |
| |
| return new DhcpL2RelayStatistics(builder.build()); |
| } |
| |
| @Override |
| public String toString() { |
| MoreObjects.ToStringHelper helper = MoreObjects.toStringHelper(this.getClass()); |
| counters.forEach((id, v) -> helper.add(id.toString(), v)); |
| return helper.toString(); |
| } |
| } |