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/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch 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.elasticsearch.common.unit;
import org.elasticsearch.ElasticsearchParseException;
import org.elasticsearch.monitor.jvm.JvmInfo;
import java.util.Objects;
import static org.elasticsearch.common.unit.ByteSizeValue.parseBytesSizeValue;
/** Utility methods to get memory sizes. */
public enum MemorySizeValue {
;
/** Parse the provided string as a memory size. This method either accepts absolute values such as
* <tt>42</tt> (default assumed unit is byte) or <tt>2mb</tt>, or percentages of the heap size: if
* the heap is 1G, <tt>10%</tt> will be parsed as <tt>100mb</tt>. */
public static ByteSizeValue parseBytesSizeValueOrHeapRatio(String sValue, String settingName) {
settingName = Objects.requireNonNull(settingName);
if (sValue != null && sValue.endsWith("%")) {
final String percentAsString = sValue.substring(0, sValue.length() - 1);
try {
final double percent = Double.parseDouble(percentAsString);
if (percent < 0 || percent > 100) {
throw new ElasticsearchParseException("percentage should be in [0-100], got [{}]", percentAsString);
}
return new ByteSizeValue((long) ((percent / 100) * JvmInfo.jvmInfo().getMem().getHeapMax().bytes()), ByteSizeUnit.BYTES);
} catch (NumberFormatException e) {
throw new ElasticsearchParseException("failed to parse [{}] as a double", e, percentAsString);
}
} else {
return parseBytesSizeValue(sValue, settingName);
}
}
}
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