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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.action.admin.indices.rollover;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.io.stream.StreamOutput;
import org.elasticsearch.common.unit.TimeValue;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.common.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 {
//TODO here we should just use TimeValue#writeTo and same for de-serialization in the constructor, we lose information this way
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());
}
}
}