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/*
* Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
* or more contributor license agreements. Licensed under the Elastic License
* 2.0 and the Server Side Public License, v 1; you may not use this file except
* in compliance with, at your election, the Elastic License 2.0 or the Server
* Side Public License, v 1.
*/
package org.elasticsearch.action.admin.indices.rollover;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.io.stream.StreamOutput;
import org.elasticsearch.core.TimeValue;
import org.elasticsearch.xcontent.XContentBuilder;
import org.elasticsearch.xcontent.XContentParser;
import java.io.IOException;
/**
* Condition for index maximum age. Evaluates to true
* when the index is at least {@link #value} old
*/
public class MaxAgeCondition extends Condition {
public static final String NAME = "max_age";
public MaxAgeCondition(TimeValue value) {
super(NAME);
this.value = value;
}
public MaxAgeCondition(StreamInput in) throws IOException {
super(NAME);
this.value = TimeValue.timeValueMillis(in.readLong());
}
@Override
public Result evaluate(final Stats stats) {
long indexAge = System.currentTimeMillis() - stats.indexCreated;
return new Result(this, this.value.getMillis() <= indexAge);
}
@Override
public String getWriteableName() {
return NAME;
}
@Override
public void writeTo(StreamOutput out) throws IOException {
// While we technically could serialize this with out.writeTimeValue(...), that would
// require doing the song and dance around backwards compatibility for this value. Since
// in this case the deserialized version is not displayed to a user, it's okay to simply use
// milliseconds. It's possible to lose precision if someone were to say, specify 50
// nanoseconds, however, in that case, their max age is indistinguishable from 0
// milliseconds regardless.
out.writeLong(value.getMillis());
}
@Override
public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException {
return builder.field(NAME, value.getStringRep());
}
public static MaxAgeCondition fromXContent(XContentParser parser) throws IOException {
if (parser.nextToken() == XContentParser.Token.VALUE_STRING) {
return new MaxAgeCondition(TimeValue.parseTimeValue(parser.text(), NAME));
} else {
throw new IllegalArgumentException("invalid token: " + parser.currentToken());
}
}
}