| /** |
| * 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.hadoop.metrics2.sink.timeline; |
| |
| /** |
| * Is used to determine metrics aggregate table. |
| * |
| */ |
| public enum Precision { |
| SECONDS, |
| MINUTES, |
| HOURS, |
| DAYS; |
| |
| public static class PrecisionFormatException extends IllegalArgumentException { |
| public PrecisionFormatException(String message, Throwable cause) { |
| super(message, cause); |
| } |
| } |
| |
| public static Precision getPrecision(String precision) throws PrecisionFormatException { |
| if (precision == null || precision.isEmpty()) { |
| return null; |
| } |
| try { |
| return Precision.valueOf(precision.toUpperCase()); |
| } catch (IllegalArgumentException e) { |
| throw new PrecisionFormatException("precision should be seconds, " + |
| "minutes, hours or days", e); |
| } |
| } |
| |
| public static Precision getPrecision(long startTime, long endTime) { |
| long HOUR = 3600000; // 1 hour |
| long DAY = 86400000; // 1 day |
| long timeRange = endTime - startTime; |
| if (timeRange > 30 * DAY) { |
| return Precision.DAYS; |
| } else if (timeRange > 1 * DAY) { |
| return Precision.HOURS; |
| } else if (timeRange > 2 * HOUR) { |
| return Precision.MINUTES; |
| } else { |
| return Precision.SECONDS; |
| } |
| } |
| |
| public static Precision getHigherPrecision(Precision precision) { |
| |
| if (precision == null) |
| return null; |
| |
| if (precision.equals(Precision.SECONDS)) { |
| return Precision.MINUTES; |
| } else if (precision.equals(Precision.MINUTES)) { |
| return Precision.HOURS; |
| } else if (precision.equals(Precision.HOURS)) { |
| return Precision.DAYS; |
| } else { |
| return null; |
| } |
| } |
| } |