| /* |
| * Copyright 2016-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 |
| * limitations under the License. |
| */ |
| package org.onosproject.cpman.impl; |
| |
| import org.onosproject.cpman.ControlLoad; |
| import org.onosproject.cpman.ControlMetricType; |
| import org.onosproject.cpman.MetricsDatabase; |
| |
| import java.util.Arrays; |
| import java.util.concurrent.TimeUnit; |
| import java.util.stream.IntStream; |
| |
| /** |
| * An implementation of control plane load. |
| */ |
| public class DefaultControlLoad implements ControlLoad { |
| |
| private final MetricsDatabase mdb; |
| private final ControlMetricType type; |
| |
| /** |
| * Constructs a control load using the given metrics database and |
| * control metric type. |
| * |
| * @param mdb metrics database |
| * @param type control metric type |
| */ |
| public DefaultControlLoad(MetricsDatabase mdb, ControlMetricType type) { |
| this.mdb = mdb; |
| this.type = type; |
| } |
| |
| @Override |
| public long average(int duration, TimeUnit unit) { |
| return (long) Arrays.stream(recent(duration, unit)).average().getAsDouble(); |
| } |
| |
| @Override |
| public long average() { |
| return (long) Arrays.stream(all()).average().getAsDouble(); |
| } |
| |
| @Override |
| public long rate() { |
| return 0; |
| } |
| |
| @Override |
| public long latest() { |
| return (long) mdb.recentMetric(type.toString()); |
| } |
| |
| @Override |
| public boolean isValid() { |
| return true; |
| } |
| |
| @Override |
| public long time() { |
| return mdb.lastUpdate(type.toString()); |
| } |
| |
| @Override |
| public long[] recent(int duration, TimeUnit unit) { |
| return doubleToLong(mdb.recentMetrics(type.toString(), duration, unit)); |
| } |
| |
| @Override |
| public long[] all() { |
| return doubleToLong(mdb.metrics(type.toString())); |
| } |
| |
| private double nanToZero(double d) { |
| return Double.isNaN(d) ? 0D : d; |
| } |
| |
| private long[] doubleToLong(double[] array) { |
| final long[] longArray = new long[array.length]; |
| IntStream.range(0, array.length).forEach(i -> |
| longArray[i] = (long) nanToZero(array[i])); |
| |
| return longArray; |
| } |
| } |