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Elasticsearch subproject :server
/*
* 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.index.recovery;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.io.stream.StreamOutput;
import org.elasticsearch.common.io.stream.Streamable;
import org.elasticsearch.common.unit.TimeValue;
import org.elasticsearch.common.xcontent.ToXContent.Params;
import org.elasticsearch.common.xcontent.ToXContentFragment;
import org.elasticsearch.common.xcontent.XContentBuilder;
import java.io.IOException;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.concurrent.atomic.AtomicLong;
/**
* Recovery related statistics, starting at the shard level and allowing aggregation to
* indices and node level
*/
public class RecoveryStats implements ToXContentFragment, Streamable {
private final AtomicInteger currentAsSource = new AtomicInteger();
private final AtomicInteger currentAsTarget = new AtomicInteger();
private final AtomicLong throttleTimeInNanos = new AtomicLong();
public RecoveryStats() {
}
public void add(RecoveryStats recoveryStats) {
if (recoveryStats != null) {
this.currentAsSource.addAndGet(recoveryStats.currentAsSource());
this.currentAsTarget.addAndGet(recoveryStats.currentAsTarget());
}
addTotals(recoveryStats);
}
public void addTotals(RecoveryStats recoveryStats) {
if (recoveryStats != null) {
this.throttleTimeInNanos.addAndGet(recoveryStats.throttleTime().nanos());
}
}
/**
* Number of ongoing recoveries for which a shard serves as a source
*/
public int currentAsSource() {
return currentAsSource.get();
}
/**
* Number of ongoing recoveries for which a shard serves as a target
*/
public int currentAsTarget() {
return currentAsTarget.get();
}
/**
* Total time recoveries waited due to throttling
*/
public TimeValue throttleTime() {
return TimeValue.timeValueNanos(throttleTimeInNanos.get());
}
public void incCurrentAsTarget() {
currentAsTarget.incrementAndGet();
}
public void decCurrentAsTarget() {
currentAsTarget.decrementAndGet();
}
public void incCurrentAsSource() {
currentAsSource.incrementAndGet();
}
public void decCurrentAsSource() {
currentAsSource.decrementAndGet();
}
public void addThrottleTime(long nanos) {
throttleTimeInNanos.addAndGet(nanos);
}
@Override
public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException {
builder.startObject(Fields.RECOVERY);
builder.field(Fields.CURRENT_AS_SOURCE, currentAsSource());
builder.field(Fields.CURRENT_AS_TARGET, currentAsTarget());
builder.humanReadableField(Fields.THROTTLE_TIME_IN_MILLIS, Fields.THROTTLE_TIME, throttleTime());
builder.endObject();
return builder;
}
public static RecoveryStats readRecoveryStats(StreamInput in) throws IOException {
RecoveryStats stats = new RecoveryStats();
stats.readFrom(in);
return stats;
}
static final class Fields {
static final String RECOVERY = "recovery";
static final String CURRENT_AS_SOURCE = "current_as_source";
static final String CURRENT_AS_TARGET = "current_as_target";
static final String THROTTLE_TIME = "throttle_time";
static final String THROTTLE_TIME_IN_MILLIS = "throttle_time_in_millis";
}
@Override
public void readFrom(StreamInput in) throws IOException {
currentAsSource.set(in.readVInt());
currentAsTarget.set(in.readVInt());
throttleTimeInNanos.set(in.readLong());
}
@Override
public void writeTo(StreamOutput out) throws IOException {
out.writeVInt(currentAsSource.get());
out.writeVInt(currentAsTarget.get());
out.writeLong(throttleTimeInNanos.get());
}
@Override
public String toString() {
return "recoveryStats, currentAsSource [" + currentAsSource() + "],currentAsTarget ["
+ currentAsTarget() + "], throttle [" + throttleTime() + "]";
}
}