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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.translog;
import org.elasticsearch.Version;
import org.elasticsearch.common.Strings;
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.ToXContentFragment;
import org.elasticsearch.common.xcontent.XContentBuilder;
import java.io.IOException;
public class TranslogStats implements Streamable, ToXContentFragment {
private long translogSizeInBytes;
private int numberOfOperations;
private long uncommittedSizeInBytes;
private int uncommittedOperations;
private long earliestLastModifiedAge;
public TranslogStats() {
}
public TranslogStats(int numberOfOperations, long translogSizeInBytes, int uncommittedOperations, long uncommittedSizeInBytes,
long earliestLastModifiedAge) {
if (numberOfOperations < 0) {
throw new IllegalArgumentException("numberOfOperations must be >= 0");
}
if (translogSizeInBytes < 0) {
throw new IllegalArgumentException("translogSizeInBytes must be >= 0");
}
if (uncommittedOperations < 0) {
throw new IllegalArgumentException("uncommittedOperations must be >= 0");
}
if (uncommittedSizeInBytes < 0) {
throw new IllegalArgumentException("uncommittedSizeInBytes must be >= 0");
}
if (earliestLastModifiedAge < 0) {
throw new IllegalArgumentException("earliestLastModifiedAge must be >= 0");
}
this.numberOfOperations = numberOfOperations;
this.translogSizeInBytes = translogSizeInBytes;
this.uncommittedSizeInBytes = uncommittedSizeInBytes;
this.uncommittedOperations = uncommittedOperations;
this.earliestLastModifiedAge = earliestLastModifiedAge;
}
public void add(TranslogStats translogStats) {
if (translogStats == null) {
return;
}
this.numberOfOperations += translogStats.numberOfOperations;
this.translogSizeInBytes += translogStats.translogSizeInBytes;
this.uncommittedOperations += translogStats.uncommittedOperations;
this.uncommittedSizeInBytes += translogStats.uncommittedSizeInBytes;
this.earliestLastModifiedAge =
Math.min(this.earliestLastModifiedAge, translogStats.earliestLastModifiedAge);
}
public long getTranslogSizeInBytes() {
return translogSizeInBytes;
}
public int estimatedNumberOfOperations() {
return numberOfOperations;
}
/** the size of the generations in the translog that weren't yet to committed to lucene */
public long getUncommittedSizeInBytes() {
return uncommittedSizeInBytes;
}
/** the number of operations in generations of the translog that weren't yet to committed to lucene */
public int getUncommittedOperations() {
return uncommittedOperations;
}
public long getEarliestLastModifiedAge() { return earliestLastModifiedAge; }
@Override
public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException {
builder.startObject("translog");
builder.field("operations", numberOfOperations);
builder.humanReadableField("size_in_bytes", "size", new ByteSizeValue(translogSizeInBytes));
builder.field("uncommitted_operations", uncommittedOperations);
builder.humanReadableField("uncommitted_size_in_bytes", "uncommitted_size", new ByteSizeValue(uncommittedSizeInBytes));
builder.field("earliest_last_modified_age", earliestLastModifiedAge);
builder.endObject();
return builder;
}
@Override
public String toString() {
return Strings.toString(this, true, true);
}
@Override
public void readFrom(StreamInput in) throws IOException {
numberOfOperations = in.readVInt();
translogSizeInBytes = in.readVLong();
if (in.getVersion().onOrAfter(Version.V_6_0_0_beta1)) {
uncommittedOperations = in.readVInt();
uncommittedSizeInBytes = in.readVLong();
} else {
uncommittedOperations = numberOfOperations;
uncommittedSizeInBytes = translogSizeInBytes;
}
if (in.getVersion().onOrAfter(Version.V_6_3_0)) {
earliestLastModifiedAge = in.readVLong();
}
}
@Override
public void writeTo(StreamOutput out) throws IOException {
out.writeVInt(numberOfOperations);
out.writeVLong(translogSizeInBytes);
if (out.getVersion().onOrAfter(Version.V_6_0_0_beta1)) {
out.writeVInt(uncommittedOperations);
out.writeVLong(uncommittedSizeInBytes);
}
if (out.getVersion().onOrAfter(Version.V_6_3_0)) {
out.writeVLong(earliestLastModifiedAge);
}
}
}