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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.fielddata;
import com.carrotsearch.hppc.ObjectLongHashMap;
import org.elasticsearch.common.Nullable;
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.ByteSizeValue;
import org.elasticsearch.common.xcontent.ToXContent;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.common.xcontent.XContentBuilderString;
import java.io.IOException;
/**
*/
public class FieldDataStats implements Streamable, ToXContent {
long memorySize;
long evictions;
@Nullable
ObjectLongHashMap fields;
public FieldDataStats() {
}
public FieldDataStats(long memorySize, long evictions, @Nullable ObjectLongHashMap fields) {
this.memorySize = memorySize;
this.evictions = evictions;
this.fields = fields;
}
public void add(FieldDataStats stats) {
this.memorySize += stats.memorySize;
this.evictions += stats.evictions;
if (stats.fields != null) {
if (fields == null) {
fields = stats.fields.clone();
} else {
assert !stats.fields.containsKey(null);
final Object[] keys = stats.fields.keys;
final long[] values = stats.fields.values;
for (int i = 0; i < keys.length; i++) {
if (keys[i] != null) {
fields.addTo((String) keys[i], values[i]);
}
}
}
}
}
public long getMemorySizeInBytes() {
return this.memorySize;
}
public ByteSizeValue getMemorySize() {
return new ByteSizeValue(memorySize);
}
public long getEvictions() {
return this.evictions;
}
@Nullable
public ObjectLongHashMap getFields() {
return fields;
}
public static FieldDataStats readFieldDataStats(StreamInput in) throws IOException {
FieldDataStats stats = new FieldDataStats();
stats.readFrom(in);
return stats;
}
@Override
public void readFrom(StreamInput in) throws IOException {
memorySize = in.readVLong();
evictions = in.readVLong();
if (in.readBoolean()) {
int size = in.readVInt();
fields = new ObjectLongHashMap<>(size);
for (int i = 0; i < size; i++) {
fields.put(in.readString(), in.readVLong());
}
}
}
@Override
public void writeTo(StreamOutput out) throws IOException {
out.writeVLong(memorySize);
out.writeVLong(evictions);
if (fields == null) {
out.writeBoolean(false);
} else {
out.writeBoolean(true);
out.writeVInt(fields.size());
assert !fields.containsKey(null);
final Object[] keys = fields.keys;
final long[] values = fields.values;
for (int i = 0; i < keys.length; i++) {
if (keys[i] != null) {
out.writeString((String) keys[i]);
out.writeVLong(values[i]);
}
}
}
}
@Override
public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException {
builder.startObject(Fields.FIELDDATA);
builder.byteSizeField(Fields.MEMORY_SIZE_IN_BYTES, Fields.MEMORY_SIZE, memorySize);
builder.field(Fields.EVICTIONS, getEvictions());
if (fields != null) {
builder.startObject(Fields.FIELDS);
assert !fields.containsKey(null);
final Object[] keys = fields.keys;
final long[] values = fields.values;
for (int i = 0; i < keys.length; i++) {
if (keys[i] != null) {
builder.startObject((String) keys[i], XContentBuilder.FieldCaseConversion.NONE);
builder.byteSizeField(Fields.MEMORY_SIZE_IN_BYTES, Fields.MEMORY_SIZE, values[i]);
builder.endObject();
}
}
builder.endObject();
}
builder.endObject();
return builder;
}
static final class Fields {
static final XContentBuilderString FIELDDATA = new XContentBuilderString("fielddata");
static final XContentBuilderString MEMORY_SIZE = new XContentBuilderString("memory_size");
static final XContentBuilderString MEMORY_SIZE_IN_BYTES = new XContentBuilderString("memory_size_in_bytes");
static final XContentBuilderString EVICTIONS = new XContentBuilderString("evictions");
static final XContentBuilderString FIELDS = new XContentBuilderString("fields");
}
}