| /** |
| * 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.fs.slive; |
| |
| import org.apache.hadoop.fs.slive.Constants.Distribution; |
| |
| /** |
| * This class holds the data representing what an operations distribution and |
| * its percentage is (between 0 and 1) and provides operations to access those |
| * types and parse and unparse from and into strings |
| */ |
| class OperationData { |
| |
| private static final String SEP = ","; |
| |
| private Distribution distribution; |
| private Double percent; |
| |
| OperationData(Distribution d, Double p) { |
| this.distribution = d; |
| this.percent = p; |
| } |
| |
| /** |
| * Expects a comma separated list (where the first element is the ratio |
| * (between 0 and 100)) and the second element is the distribution (if |
| * non-existent then uniform will be selected). If an empty list is passed in |
| * then this element will just set the distribution (to uniform) and leave the |
| * percent as null. |
| */ |
| OperationData(String data) { |
| String pieces[] = Helper.getTrimmedStrings(data); |
| distribution = Distribution.UNIFORM; |
| percent = null; |
| if (pieces.length == 1) { |
| percent = (Double.parseDouble(pieces[0]) / 100.0d); |
| } else if (pieces.length >= 2) { |
| percent = (Double.parseDouble(pieces[0]) / 100.0d); |
| distribution = Distribution.valueOf(pieces[1].toUpperCase()); |
| } |
| } |
| |
| /** |
| * Gets the distribution this operation represents |
| * |
| * @return Distribution |
| */ |
| Distribution getDistribution() { |
| return distribution; |
| } |
| |
| /** |
| * Gets the 0 - 1 percent that this operations run ratio should be |
| * |
| * @return Double (or null if not given) |
| */ |
| Double getPercent() { |
| return percent; |
| } |
| |
| /** |
| * Returns a string list representation of this object (if the percent is |
| * null) then NaN will be output instead. Format is percent,distribution. |
| */ |
| public String toString() { |
| StringBuilder str = new StringBuilder(); |
| if (getPercent() != null) { |
| str.append(getPercent() * 100.0d); |
| } else { |
| str.append(Double.NaN); |
| } |
| str.append(SEP); |
| str.append(getDistribution().lowerName()); |
| return str.toString(); |
| } |
| } |