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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.index.shard;
import org.elasticsearch.Version;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.io.stream.StreamOutput;
import org.elasticsearch.common.io.stream.Writeable;
import org.elasticsearch.common.xcontent.ToXContentFragment;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.index.store.StoreStats;
import java.io.IOException;
public class DocsStats implements Writeable, ToXContentFragment {
private long count = 0;
private long deleted = 0;
private long totalSizeInBytes = 0;
public DocsStats() {
}
public DocsStats(StreamInput in) throws IOException {
count = in.readVLong();
deleted = in.readVLong();
if (in.getVersion().onOrAfter(Version.V_6_1_0)) {
totalSizeInBytes = in.readVLong();
} else {
totalSizeInBytes = -1;
}
}
public DocsStats(long count, long deleted, long totalSizeInBytes) {
this.count = count;
this.deleted = deleted;
this.totalSizeInBytes = totalSizeInBytes;
}
public void add(DocsStats other) {
if (other == null) {
return;
}
if (this.totalSizeInBytes == -1) {
this.totalSizeInBytes = other.totalSizeInBytes;
} else if (other.totalSizeInBytes != -1) {
this.totalSizeInBytes += other.totalSizeInBytes;
}
this.count += other.count;
this.deleted += other.deleted;
}
public long getCount() {
return this.count;
}
public long getDeleted() {
return this.deleted;
}
/**
* Returns the total size in bytes of all documents in this stats.
* This value may be more reliable than {@link StoreStats#getSizeInBytes()} in estimating the index size.
*/
public long getTotalSizeInBytes() {
return totalSizeInBytes;
}
/**
* Returns the average size in bytes of all documents in this stats.
*/
public long getAverageSizeInBytes() {
long totalDocs = count + deleted;
return totalDocs == 0 ? 0 : totalSizeInBytes / totalDocs;
}
@Override
public void writeTo(StreamOutput out) throws IOException {
out.writeVLong(count);
out.writeVLong(deleted);
if (out.getVersion().onOrAfter(Version.V_6_1_0)) {
out.writeVLong(totalSizeInBytes);
}
}
@Override
public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException {
builder.startObject(Fields.DOCS);
builder.field(Fields.COUNT, count);
builder.field(Fields.DELETED, deleted);
builder.endObject();
return builder;
}
static final class Fields {
static final String DOCS = "docs";
static final String COUNT = "count";
static final String DELETED = "deleted";
}
}