| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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.apache.ignite.development.utils; |
| |
| /** |
| * Statistic for record size, used to accumulate information about several record and calculating average. |
| */ |
| public class RecordSizeCountStat { |
| /** Sum of sizes. */ |
| private long size = -1; |
| |
| /** Count of all records. */ |
| private int cnt; |
| |
| /** |
| * @param size record size. Negative value means size is unknown for current occurrence. Any negative value resets |
| * accumulated statistics. |
| */ |
| void occurrence(int size) { |
| if (size >= 0) { |
| if (this.size < 0) |
| this.size = 0; |
| |
| this.size += size; |
| } |
| else { |
| if (this.size > 0) |
| this.size = -1; |
| } |
| |
| cnt++; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public String toString() { |
| return (size >= 0 ? size : "") + |
| "\t " + cnt + |
| "\t " + ((size >= 0) ? size / cnt : ""); |
| } |
| |
| /** |
| * @return average size of one record, as double. |
| */ |
| private double averageD() { |
| return 1.0 * size / cnt; |
| } |
| |
| /** |
| * @return average size of one record, printable version. |
| */ |
| String averageStr() { |
| return cnt == 0 ? "" : String.format("%.2f", averageD()); |
| } |
| |
| /** |
| * @return Count of all records. |
| */ |
| int getCount() { |
| return cnt; |
| } |
| |
| /** |
| * @param val other statistic value to reduce with. |
| */ |
| void add(RecordSizeCountStat val) { |
| cnt += val.cnt; |
| size += val.size; |
| } |
| } |