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Elasticsearch subproject :server
/*
* Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
* or more contributor license agreements. Licensed under the Elastic License
* 2.0 and the Server Side Public License, v 1; you may not use this file except
* in compliance with, at your election, the Elastic License 2.0 or the Server
* Side Public License, v 1.
*/
package org.elasticsearch;
import org.elasticsearch.common.Strings;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.io.stream.StreamOutput;
import org.elasticsearch.core.Assertions;
import org.elasticsearch.core.RestApiVersion;
import org.elasticsearch.core.SuppressForbidden;
import org.elasticsearch.monitor.jvm.JvmInfo;
import org.elasticsearch.xcontent.ToXContentFragment;
import org.elasticsearch.xcontent.XContentBuilder;
import java.io.IOException;
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.NavigableMap;
import java.util.Objects;
import java.util.TreeMap;
@SuppressWarnings("checkstyle:linelength")
public class Version implements Comparable, ToXContentFragment {
/*
* The logic for ID is: XXYYZZAA, where XX is major version, YY is minor version, ZZ is revision, and AA is alpha/beta/rc indicator AA
* values below 25 are for alpha builder (since 5.0), and above 25 and below 50 are beta builds, and below 99 are RC builds, with 99
* indicating a release the (internal) format of the id is there so we can easily do after/before checks on the id
*
* IMPORTANT: Unreleased vs. Released Versions
*
* All listed versions MUST be released versions, except the last major, the last minor and the last revison. ONLY those are required
* as unreleased versions.
*
* Example: assume the last release is 7.3.0
* The unreleased last major is the next major release, e.g. _8_.0.0
* The unreleased last minor is the current major with a upped minor: 7._4_.0
* The unreleased revision is the very release with a upped revision 7.3._1_
*/
public static final int V_EMPTY_ID = 0;
public static final Version V_EMPTY = new Version(V_EMPTY_ID, TransportVersion.ZERO, org.apache.lucene.util.Version.LATEST);
public static final Version V_7_0_0 = new Version(7_00_00_99, TransportVersion.V_7_0_0, org.apache.lucene.util.Version.LUCENE_8_0_0);
public static final Version V_7_0_1 = new Version(7_00_01_99, TransportVersion.V_7_0_1, org.apache.lucene.util.Version.LUCENE_8_0_0);
public static final Version V_7_1_0 = new Version(7_01_00_99, TransportVersion.V_7_1_0, org.apache.lucene.util.Version.LUCENE_8_0_0);
public static final Version V_7_1_1 = new Version(7_01_01_99, TransportVersion.V_7_1_1, org.apache.lucene.util.Version.LUCENE_8_0_0);
public static final Version V_7_2_0 = new Version(7_02_00_99, TransportVersion.V_7_2_0, org.apache.lucene.util.Version.LUCENE_8_0_0);
public static final Version V_7_2_1 = new Version(7_02_01_99, TransportVersion.V_7_2_1, org.apache.lucene.util.Version.LUCENE_8_0_0);
public static final Version V_7_3_0 = new Version(7_03_00_99, TransportVersion.V_7_3_0, org.apache.lucene.util.Version.LUCENE_8_1_0);
public static final Version V_7_3_1 = new Version(7_03_01_99, TransportVersion.V_7_3_1, org.apache.lucene.util.Version.LUCENE_8_1_0);
public static final Version V_7_3_2 = new Version(7_03_02_99, TransportVersion.V_7_3_2, org.apache.lucene.util.Version.LUCENE_8_1_0);
public static final Version V_7_4_0 = new Version(7_04_00_99, TransportVersion.V_7_4_0, org.apache.lucene.util.Version.LUCENE_8_2_0);
public static final Version V_7_4_1 = new Version(7_04_01_99, TransportVersion.V_7_4_1, org.apache.lucene.util.Version.LUCENE_8_2_0);
public static final Version V_7_4_2 = new Version(7_04_02_99, TransportVersion.V_7_4_2, org.apache.lucene.util.Version.LUCENE_8_2_0);
public static final Version V_7_5_0 = new Version(7_05_00_99, TransportVersion.V_7_5_0, org.apache.lucene.util.Version.LUCENE_8_3_0);
public static final Version V_7_5_1 = new Version(7_05_01_99, TransportVersion.V_7_5_1, org.apache.lucene.util.Version.LUCENE_8_3_0);
public static final Version V_7_5_2 = new Version(7_05_02_99, TransportVersion.V_7_5_2, org.apache.lucene.util.Version.LUCENE_8_3_0);
public static final Version V_7_6_0 = new Version(7_06_00_99, TransportVersion.V_7_6_0, org.apache.lucene.util.Version.LUCENE_8_4_0);
public static final Version V_7_6_1 = new Version(7_06_01_99, TransportVersion.V_7_6_1, org.apache.lucene.util.Version.LUCENE_8_4_0);
public static final Version V_7_6_2 = new Version(7_06_02_99, TransportVersion.V_7_6_2, org.apache.lucene.util.Version.LUCENE_8_4_0);
public static final Version V_7_7_0 = new Version(7_07_00_99, TransportVersion.V_7_7_0, org.apache.lucene.util.Version.LUCENE_8_5_1);
public static final Version V_7_7_1 = new Version(7_07_01_99, TransportVersion.V_7_7_1, org.apache.lucene.util.Version.LUCENE_8_5_1);
public static final Version V_7_8_0 = new Version(7_08_00_99, TransportVersion.V_7_8_0, org.apache.lucene.util.Version.LUCENE_8_5_1);
public static final Version V_7_8_1 = new Version(7_08_01_99, TransportVersion.V_7_8_1, org.apache.lucene.util.Version.LUCENE_8_5_1);
public static final Version V_7_9_0 = new Version(7_09_00_99, TransportVersion.V_7_9_0, org.apache.lucene.util.Version.LUCENE_8_6_0);
public static final Version V_7_9_1 = new Version(7_09_01_99, TransportVersion.V_7_9_1, org.apache.lucene.util.Version.LUCENE_8_6_2);
public static final Version V_7_9_2 = new Version(7_09_02_99, TransportVersion.V_7_9_2, org.apache.lucene.util.Version.LUCENE_8_6_2);
public static final Version V_7_9_3 = new Version(7_09_03_99, TransportVersion.V_7_9_3, org.apache.lucene.util.Version.LUCENE_8_6_2);
public static final Version V_7_10_0 = new Version(7_10_00_99, TransportVersion.V_7_10_0, org.apache.lucene.util.Version.LUCENE_8_7_0);
public static final Version V_7_10_1 = new Version(7_10_01_99, TransportVersion.V_7_10_1, org.apache.lucene.util.Version.LUCENE_8_7_0);
public static final Version V_7_10_2 = new Version(7_10_02_99, TransportVersion.V_7_10_2, org.apache.lucene.util.Version.LUCENE_8_7_0);
public static final Version V_7_11_0 = new Version(7_11_00_99, TransportVersion.V_7_11_0, org.apache.lucene.util.Version.LUCENE_8_7_0);
public static final Version V_7_11_1 = new Version(7_11_01_99, TransportVersion.V_7_11_1, org.apache.lucene.util.Version.LUCENE_8_7_0);
public static final Version V_7_11_2 = new Version(7_11_02_99, TransportVersion.V_7_11_2, org.apache.lucene.util.Version.LUCENE_8_7_0);
public static final Version V_7_12_0 = new Version(7_12_00_99, TransportVersion.V_7_12_0, org.apache.lucene.util.Version.LUCENE_8_8_0);
public static final Version V_7_12_1 = new Version(7_12_01_99, TransportVersion.V_7_12_1, org.apache.lucene.util.Version.LUCENE_8_8_0);
public static final Version V_7_13_0 = new Version(7_13_00_99, TransportVersion.V_7_13_0, org.apache.lucene.util.Version.LUCENE_8_8_2);
public static final Version V_7_13_1 = new Version(7_13_01_99, TransportVersion.V_7_13_1, org.apache.lucene.util.Version.LUCENE_8_8_2);
public static final Version V_7_13_2 = new Version(7_13_02_99, TransportVersion.V_7_13_2, org.apache.lucene.util.Version.LUCENE_8_8_2);
public static final Version V_7_13_3 = new Version(7_13_03_99, TransportVersion.V_7_13_3, org.apache.lucene.util.Version.LUCENE_8_8_2);
public static final Version V_7_13_4 = new Version(7_13_04_99, TransportVersion.V_7_13_4, org.apache.lucene.util.Version.LUCENE_8_8_2);
public static final Version V_7_14_0 = new Version(7_14_00_99, TransportVersion.V_7_14_0, org.apache.lucene.util.Version.LUCENE_8_9_0);
public static final Version V_7_14_1 = new Version(7_14_01_99, TransportVersion.V_7_14_1, org.apache.lucene.util.Version.LUCENE_8_9_0);
public static final Version V_7_14_2 = new Version(7_14_02_99, TransportVersion.V_7_14_2, org.apache.lucene.util.Version.LUCENE_8_9_0);
public static final Version V_7_15_0 = new Version(7_15_00_99, TransportVersion.V_7_15_0, org.apache.lucene.util.Version.LUCENE_8_9_0);
public static final Version V_7_15_1 = new Version(7_15_01_99, TransportVersion.V_7_15_1, org.apache.lucene.util.Version.LUCENE_8_9_0);
public static final Version V_7_15_2 = new Version(7_15_02_99, TransportVersion.V_7_15_2, org.apache.lucene.util.Version.LUCENE_8_9_0);
public static final Version V_7_16_0 = new Version(7_16_00_99, TransportVersion.V_7_16_0, org.apache.lucene.util.Version.LUCENE_8_10_1);
public static final Version V_7_16_1 = new Version(7_16_01_99, TransportVersion.V_7_16_1, org.apache.lucene.util.Version.LUCENE_8_10_1);
public static final Version V_7_16_2 = new Version(7_16_02_99, TransportVersion.V_7_16_2, org.apache.lucene.util.Version.LUCENE_8_10_1);
public static final Version V_7_16_3 = new Version(7_16_03_99, TransportVersion.V_7_16_3, org.apache.lucene.util.Version.LUCENE_8_10_1);
public static final Version V_7_17_0 = new Version(7_17_00_99, TransportVersion.V_7_17_0, org.apache.lucene.util.Version.LUCENE_8_11_1);
public static final Version V_7_17_1 = new Version(7_17_01_99, TransportVersion.V_7_17_1, org.apache.lucene.util.Version.LUCENE_8_11_1);
public static final Version V_7_17_2 = new Version(7_17_02_99, TransportVersion.V_7_17_2, org.apache.lucene.util.Version.LUCENE_8_11_1);
public static final Version V_7_17_3 = new Version(7_17_03_99, TransportVersion.V_7_17_3, org.apache.lucene.util.Version.LUCENE_8_11_1);
public static final Version V_7_17_4 = new Version(7_17_04_99, TransportVersion.V_7_17_4, org.apache.lucene.util.Version.LUCENE_8_11_1);
public static final Version V_7_17_5 = new Version(7_17_05_99, TransportVersion.V_7_17_5, org.apache.lucene.util.Version.LUCENE_8_11_1);
public static final Version V_7_17_6 = new Version(7_17_06_99, TransportVersion.V_7_17_6, org.apache.lucene.util.Version.LUCENE_8_11_1);
public static final Version V_7_17_7 = new Version(7_17_07_99, TransportVersion.V_7_17_7, org.apache.lucene.util.Version.LUCENE_8_11_1);
public static final Version V_7_17_8 = new Version(7_17_08_99, TransportVersion.V_7_17_8, org.apache.lucene.util.Version.LUCENE_8_11_1);
public static final Version V_7_17_9 = new Version(7_17_09_99, TransportVersion.V_7_17_9, org.apache.lucene.util.Version.LUCENE_8_11_1);
public static final Version V_7_17_10 = new Version(7_17_10_99, TransportVersion.V_7_17_10, org.apache.lucene.util.Version.LUCENE_8_11_1);
public static final Version V_7_17_11 = new Version(7_17_11_99, TransportVersion.V_7_17_11, org.apache.lucene.util.Version.LUCENE_8_11_1);
public static final Version V_8_0_0 = new Version(8_00_00_99, TransportVersion.V_8_0_0, org.apache.lucene.util.Version.LUCENE_9_0_0);
public static final Version V_8_0_1 = new Version(8_00_01_99, TransportVersion.V_8_0_1, org.apache.lucene.util.Version.LUCENE_9_0_0);
public static final Version V_8_1_0 = new Version(8_01_00_99, TransportVersion.V_8_1_0, org.apache.lucene.util.Version.LUCENE_9_0_0);
public static final Version V_8_1_1 = new Version(8_01_01_99, TransportVersion.V_8_1_1, org.apache.lucene.util.Version.LUCENE_9_0_0);
public static final Version V_8_1_2 = new Version(8_01_02_99, TransportVersion.V_8_1_2, org.apache.lucene.util.Version.LUCENE_9_0_0);
public static final Version V_8_1_3 = new Version(8_01_03_99, TransportVersion.V_8_1_3, org.apache.lucene.util.Version.LUCENE_9_0_0);
public static final Version V_8_2_0 = new Version(8_02_00_99, TransportVersion.V_8_2_0, org.apache.lucene.util.Version.LUCENE_9_1_0);
public static final Version V_8_2_1 = new Version(8_02_01_99, TransportVersion.V_8_2_1, org.apache.lucene.util.Version.LUCENE_9_1_0);
public static final Version V_8_2_2 = new Version(8_02_02_99, TransportVersion.V_8_2_2, org.apache.lucene.util.Version.LUCENE_9_1_0);
public static final Version V_8_2_3 = new Version(8_02_03_99, TransportVersion.V_8_2_3, org.apache.lucene.util.Version.LUCENE_9_1_0);
public static final Version V_8_3_0 = new Version(8_03_00_99, TransportVersion.V_8_3_0, org.apache.lucene.util.Version.LUCENE_9_2_0);
public static final Version V_8_3_1 = new Version(8_03_01_99, TransportVersion.V_8_3_1, org.apache.lucene.util.Version.LUCENE_9_2_0);
public static final Version V_8_3_2 = new Version(8_03_02_99, TransportVersion.V_8_3_2, org.apache.lucene.util.Version.LUCENE_9_2_0);
public static final Version V_8_3_3 = new Version(8_03_03_99, TransportVersion.V_8_3_3, org.apache.lucene.util.Version.LUCENE_9_2_0);
public static final Version V_8_4_0 = new Version(8_04_00_99, TransportVersion.V_8_4_0, org.apache.lucene.util.Version.LUCENE_9_3_0);
public static final Version V_8_4_1 = new Version(8_04_01_99, TransportVersion.V_8_4_1, org.apache.lucene.util.Version.LUCENE_9_3_0);
public static final Version V_8_4_2 = new Version(8_04_02_99, TransportVersion.V_8_4_2, org.apache.lucene.util.Version.LUCENE_9_3_0);
public static final Version V_8_4_3 = new Version(8_04_03_99, TransportVersion.V_8_4_3, org.apache.lucene.util.Version.LUCENE_9_3_0);
public static final Version V_8_5_0 = new Version(8_05_00_99, TransportVersion.V_8_5_0, org.apache.lucene.util.Version.LUCENE_9_4_1);
public static final Version V_8_5_1 = new Version(8_05_01_99, TransportVersion.V_8_5_1, org.apache.lucene.util.Version.LUCENE_9_4_1);
public static final Version V_8_5_2 = new Version(8_05_02_99, TransportVersion.V_8_5_2, org.apache.lucene.util.Version.LUCENE_9_4_1);
public static final Version V_8_5_3 = new Version(8_05_03_99, TransportVersion.V_8_5_3, org.apache.lucene.util.Version.LUCENE_9_4_2);
public static final Version V_8_6_0 = new Version(8_06_00_99, TransportVersion.V_8_6_0, org.apache.lucene.util.Version.LUCENE_9_4_2);
public static final Version V_8_6_1 = new Version(8_06_01_99, TransportVersion.V_8_6_1, org.apache.lucene.util.Version.LUCENE_9_4_2);
public static final Version V_8_6_2 = new Version(8_06_02_99, TransportVersion.V_8_6_2, org.apache.lucene.util.Version.LUCENE_9_4_2);
public static final Version V_8_7_0 = new Version(8_07_00_99, TransportVersion.V_8_7_0, org.apache.lucene.util.Version.LUCENE_9_5_0);
public static final Version V_8_7_1 = new Version(8_07_01_99, TransportVersion.V_8_7_1, org.apache.lucene.util.Version.LUCENE_9_5_0);
public static final Version V_8_8_0 = new Version(8_08_00_99, TransportVersion.V_8_8_0, org.apache.lucene.util.Version.LUCENE_9_6_0);
public static final Version V_8_8_1 = new Version(8_08_01_99, TransportVersion.V_8_8_1, org.apache.lucene.util.Version.LUCENE_9_6_0);
public static final Version CURRENT = V_8_8_1;
private static final NavigableMap VERSION_IDS;
private static final Map VERSION_STRINGS;
static {
final NavigableMap builder = new TreeMap<>();
final Map builderByString = new HashMap<>();
for (final Field declaredField : Version.class.getFields()) {
if (declaredField.getType().equals(Version.class)) {
final String fieldName = declaredField.getName();
if (fieldName.equals("CURRENT") || fieldName.equals("V_EMPTY")) {
continue;
}
assert fieldName.matches("V_\\d+_\\d+_\\d+") : "expected Version field [" + fieldName + "] to match V_\\d+_\\d+_\\d+";
try {
final Version version = (Version) declaredField.get(null);
if (Assertions.ENABLED) {
final String[] fields = fieldName.split("_");
final int major = Integer.valueOf(fields[1]) * 1000000;
final int minor = Integer.valueOf(fields[2]) * 10000;
final int revision = Integer.valueOf(fields[3]) * 100;
final int expectedId = major + minor + revision + 99;
assert version.id == expectedId
: "expected version [" + fieldName + "] to have id [" + expectedId + "] but was [" + version.id + "]";
}
final Version maybePrevious = builder.put(version.id, version);
builderByString.put(version.toString(), version);
assert maybePrevious == null
: "expected [" + version.id + "] to be uniquely mapped but saw [" + maybePrevious + "] and [" + version + "]";
} catch (final IllegalAccessException e) {
assert false : "Version field [" + fieldName + "] should be public";
}
}
}
assert CURRENT.luceneVersion.equals(org.apache.lucene.util.Version.LATEST)
: "Version must be upgraded to [" + org.apache.lucene.util.Version.LATEST + "] is still set to [" + CURRENT.luceneVersion + "]";
assert RestApiVersion.current().major == CURRENT.major && RestApiVersion.previous().major == CURRENT.major - 1
: "RestApiVersion must be upgraded "
+ "to reflect major from Version.CURRENT ["
+ CURRENT.major
+ "]"
+ " but is still set to ["
+ RestApiVersion.current().major
+ "]";
builder.put(V_EMPTY_ID, V_EMPTY);
builderByString.put(V_EMPTY.toString(), V_EMPTY);
VERSION_IDS = Collections.unmodifiableNavigableMap(builder);
VERSION_STRINGS = Map.copyOf(builderByString);
}
public static Version readVersion(StreamInput in) throws IOException {
return fromId(in.readVInt());
}
public static Version fromId(int id) {
final Version known = VERSION_IDS.get(id);
if (known != null) {
return known;
}
return fromIdSlow(id);
}
private static Version fromIdSlow(int id) {
// We need at least the major of the Lucene version to be correct.
// Our best guess is to use the same Lucene version as the previous
// version in the list, assuming that it didn't change.
List versions = DeclaredVersionsHolder.DECLARED_VERSIONS;
Version tmp = new Version(id, TransportVersion.CURRENT, org.apache.lucene.util.Version.LATEST);
int index = Collections.binarySearch(versions, tmp);
if (index < 0) {
index = -2 - index;
} else {
assert false : "Version [" + tmp + "] is declared but absent from the switch statement in Version#fromId";
}
final org.apache.lucene.util.Version luceneVersion;
if (index == -1) {
// this version is older than any supported version, so we
// assume it is the previous major to the oldest Lucene version
// that we know about
luceneVersion = org.apache.lucene.util.Version.fromBits(versions.get(0).luceneVersion.major - 1, 0, 0);
} else {
luceneVersion = versions.get(index).luceneVersion;
}
// TODO: assume this is an old version that has transport version == release version
return new Version(id, TransportVersion.fromId(id), luceneVersion);
}
public static void writeVersion(Version version, StreamOutput out) throws IOException {
out.writeVInt(version.id);
}
/**
* Returns the minimum version of {@code version1} and {@code version2}
*/
public static Version min(Version version1, Version version2) {
return version1.id < version2.id ? version1 : version2;
}
/**
* Returns the maximum version of {@code version1} and {@code version2}
*/
public static Version max(Version version1, Version version2) {
return version1.id > version2.id ? version1 : version2;
}
/**
* Returns the version given its string representation, current version if the argument is null or empty
*/
public static Version fromString(String version) {
if (Strings.hasLength(version) == false) {
return Version.CURRENT;
}
final Version cached = VERSION_STRINGS.get(version);
if (cached != null) {
return cached;
}
return fromStringSlow(version);
}
private static Version fromStringSlow(String version) {
final boolean snapshot; // this is some BWC for 2.x and before indices
if (snapshot = version.endsWith("-SNAPSHOT")) {
version = version.substring(0, version.length() - 9);
}
String[] parts = version.split("[.-]");
if (parts.length != 3) {
throw new IllegalArgumentException(
"the version needs to contain major, minor, and revision, and optionally the build: " + version
);
}
try {
final int rawMajor = Integer.parseInt(parts[0]);
if (rawMajor >= 5 && snapshot) { // we don't support snapshot as part of the version here anymore
throw new IllegalArgumentException("illegal version format - snapshots are only supported until version 2.x");
}
if (rawMajor >= 7 && parts.length == 4) { // we don't support qualifier as part of the version anymore
throw new IllegalArgumentException("illegal version format - qualifiers are only supported until version 6.x");
}
if (parts[1].length() > 2) {
throw new IllegalArgumentException(
"illegal minor version format - only one or two digit numbers are supported but found " + parts[1]
);
}
if (parts[2].length() > 2) {
throw new IllegalArgumentException(
"illegal revision version format - only one or two digit numbers are supported but found " + parts[2]
);
}
// we reverse the version id calculation based on some assumption as we can't reliably reverse the modulo
final int major = rawMajor * 1000000;
final int minor = Integer.parseInt(parts[1]) * 10000;
final int revision = Integer.parseInt(parts[2]) * 100;
// TODO: 99 is leftover from alpha/beta/rc, it should be removed
return fromId(major + minor + revision + 99);
} catch (NumberFormatException e) {
throw new IllegalArgumentException("unable to parse version " + version, e);
}
}
public final int id;
public final byte major;
public final byte minor;
public final byte revision;
public final byte build;
public final TransportVersion transportVersion;
public final org.apache.lucene.util.Version luceneVersion;
private final String toString;
private final int previousMajorId;
Version(int id, TransportVersion transportVersion, org.apache.lucene.util.Version luceneVersion) {
this.id = id;
this.major = (byte) ((id / 1000000) % 100);
this.minor = (byte) ((id / 10000) % 100);
this.revision = (byte) ((id / 100) % 100);
this.build = (byte) (id % 100);
this.transportVersion = Objects.requireNonNull(transportVersion);
this.luceneVersion = Objects.requireNonNull(luceneVersion);
this.toString = major + "." + minor + "." + revision;
this.previousMajorId = major > 0 ? (major - 1) * 1000000 + 99 : major;
}
public boolean after(Version version) {
return version.id < id;
}
public boolean onOrAfter(Version version) {
return version.id <= id;
}
public boolean before(Version version) {
return version.id > id;
}
public boolean onOrBefore(Version version) {
return version.id >= id;
}
@Override
public int compareTo(Version other) {
return Integer.compare(this.id, other.id);
}
@Override
public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException {
return builder.value(toString());
}
/*
* We need the declared versions when computing the minimum compatibility version. As computing the declared versions uses reflection it
* is not cheap. Since computing the minimum compatibility version can occur often, we use this holder to compute the declared versions
* lazily once.
*/
private static class DeclaredVersionsHolder {
static final List DECLARED_VERSIONS = List.copyOf(getDeclaredVersions(Version.class));
}
// lazy initialized because we don't yet have the declared versions ready when instantiating the cached Version
// instances
private Version minCompatVersion;
// lazy initialized because we don't yet have the declared versions ready when instantiating the cached Version
// instances
private Version minIndexCompatVersion;
/**
* Returns the minimum compatible version based on the current
* version. Ie a node needs to have at least the return version in order
* to communicate with a node running the current version. The returned version
* is in most of the cases the smallest major version release unless the current version
* is a beta or RC release then the version itself is returned.
*/
public Version minimumCompatibilityVersion() {
Version res = minCompatVersion;
if (res == null) {
res = computeMinCompatVersion();
minCompatVersion = res;
}
return res;
}
private Version computeMinCompatVersion() {
if (major == 6) {
// force the minimum compatibility for version 6 to 5.6 since we don't reference version 5 anymore
return Version.fromId(5060099);
} else if (major == 7) {
// force the minimum compatibility for version 7 to 6.8 since we don't reference version 6 anymore
return Version.fromId(6080099);
} else if (major >= 8) {
// all major versions from 8 onwards are compatible with last minor series of the previous major
Version bwcVersion = null;
for (int i = DeclaredVersionsHolder.DECLARED_VERSIONS.size() - 1; i >= 0; i--) {
final Version candidateVersion = DeclaredVersionsHolder.DECLARED_VERSIONS.get(i);
if (candidateVersion.major == major - 1 && after(candidateVersion)) {
if (bwcVersion != null && candidateVersion.minor < bwcVersion.minor) {
break;
}
bwcVersion = candidateVersion;
}
}
return bwcVersion == null ? this : bwcVersion;
}
return Version.min(this, fromId(major * 1000000 + 0 * 10000 + 99));
}
/**
* Returns the minimum created index version that this version supports. Indices created with lower versions
* can't be used with this version. This should also be used for file based serialization backwards compatibility ie. on serialization
* code that is used to read / write file formats like transaction logs, cluster state, and index metadata.
*/
public Version minimumIndexCompatibilityVersion() {
Version res = minIndexCompatVersion;
if (res == null) {
res = computeMinIndexCompatVersion();
minIndexCompatVersion = res;
}
return res;
}
private Version computeMinIndexCompatVersion() {
final int bwcMajor;
if (major == 5) {
bwcMajor = 2; // we jumped from 2 to 5
} else {
bwcMajor = major - 1;
}
final int bwcMinor = 0;
return Version.min(this, fromId(bwcMajor * 1000000 + bwcMinor * 10000 + 99));
}
/**
* Whether the current version is older than the current minimum compatible index version,
* see {@link #minimumIndexCompatibilityVersion()}
*/
public boolean isLegacyIndexVersion() {
return before(Version.CURRENT.minimumIndexCompatibilityVersion());
}
/**
* Returns true iff both version are compatible. Otherwise false
*/
public boolean isCompatible(Version version) {
boolean compatible = onOrAfter(version.minimumCompatibilityVersion()) && version.onOrAfter(minimumCompatibilityVersion());
assert compatible == false || Math.max(major, version.major) - Math.min(major, version.major) <= 1;
return compatible;
}
/**
* Returns a first major version previous to the version stored in this object.
* I.e 8.1.0 will return 7.0.0
*/
public Version previousMajor() {
return Version.fromId(previousMajorId);
}
@SuppressForbidden(reason = "System.out.*")
public static void main(String[] args) {
final String versionOutput = String.format(
Locale.ROOT,
"Version: %s, Build: %s/%s/%s, JVM: %s",
Build.CURRENT.qualifiedVersion(),
Build.CURRENT.type().displayName(),
Build.CURRENT.hash(),
Build.CURRENT.date(),
JvmInfo.jvmInfo().version()
);
System.out.println(versionOutput);
}
@Override
public String toString() {
return toString;
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
Version version = (Version) o;
if (id != version.id) {
return false;
}
return true;
}
@Override
public int hashCode() {
return id;
}
/**
* Extracts a sorted list of declared version constants from a class.
* The argument would normally be Version.class but is exposed for
* testing with other classes-containing-version-constants.
*/
public static List getDeclaredVersions(final Class versionClass) {
final Field[] fields = versionClass.getFields();
final List versions = new ArrayList<>(fields.length);
for (final Field field : fields) {
final int mod = field.getModifiers();
if (false == Modifier.isStatic(mod) && Modifier.isFinal(mod) && Modifier.isPublic(mod)) {
continue;
}
if (field.getType() != Version.class) {
continue;
}
switch (field.getName()) {
case "CURRENT":
case "V_EMPTY":
continue;
}
assert field.getName().matches("V(_\\d+){3}?") : field.getName();
try {
versions.add(((Version) field.get(null)));
} catch (final IllegalAccessException e) {
throw new RuntimeException(e);
}
}
Collections.sort(versions);
return versions;
}
}