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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.apache.lucene.store;
import org.apache.lucene.store.RateLimiter.SimpleRateLimiter;
import org.elasticsearch.ElasticsearchIllegalArgumentException;
import org.elasticsearch.common.Nullable;
import org.elasticsearch.common.unit.ByteSizeValue;
/**
*/
public class StoreRateLimiting {
public static interface Provider {
StoreRateLimiting rateLimiting();
}
public interface Listener {
void onPause(long nanos);
}
public static enum Type {
NONE,
MERGE,
ALL;
public static Type fromString(String type) throws ElasticsearchIllegalArgumentException {
if ("none".equalsIgnoreCase(type)) {
return NONE;
} else if ("merge".equalsIgnoreCase(type)) {
return MERGE;
} else if ("all".equalsIgnoreCase(type)) {
return ALL;
}
throw new ElasticsearchIllegalArgumentException("rate limiting type [" + type + "] not valid, can be one of [all|merge|none]");
}
}
private final SimpleRateLimiter rateLimiter = new SimpleRateLimiter(0);
private volatile SimpleRateLimiter actualRateLimiter;
private volatile Type type;
public StoreRateLimiting() {
}
@Nullable
public RateLimiter getRateLimiter() {
return actualRateLimiter;
}
public void setMaxRate(ByteSizeValue rate) {
if (rate.bytes() <= 0) {
actualRateLimiter = null;
} else if (actualRateLimiter == null) {
actualRateLimiter = rateLimiter;
actualRateLimiter.setMbPerSec(rate.mbFrac());
} else {
assert rateLimiter == actualRateLimiter;
rateLimiter.setMbPerSec(rate.mbFrac());
}
}
public Type getType() {
return type;
}
public void setType(Type type) {
this.type = type;
}
public void setType(String type) throws ElasticsearchIllegalArgumentException {
this.type = Type.fromString(type);
}
}
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