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Apache Geode provides a database-like consistency model, reliable transaction processing and a shared-nothing architecture to maintain very low latency performance with high concurrency processing
/*
* Licensed to the Apache Software Foundation (ASF) under one or more contributor license
* agreements. See the NOTICE file distributed with this work for additional information regarding
* copyright ownership. The ASF 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.apache.geode.internal;
import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;
import java.io.InputStream;
import java.nio.ByteBuffer;
import org.apache.geode.cache.UnsupportedVersionException;
import org.apache.geode.internal.cache.tier.sockets.CommandInitializer;
import org.apache.geode.internal.i18n.LocalizedStrings;
/**
* Enumerated type for client / server and p2p version.
*
* There are dependencies in versioning code that require newer versions to have ordinals higher
* than older versions in order to protect against deserialization problems. Client/server code also
* uses greater-than comparison of ordinals in backward-compatibility checks.
*
* @since GemFire 5.7
*/
public final class Version implements Comparable {
/** The name of this version */
private final transient String name;
/** The product name of this version */
private final transient String productName;
/** The suffix to use in toDataPre / fromDataPre method names */
private final transient String methodSuffix;
// the major, minor and release bits of the release
private final byte majorVersion;
private final byte minorVersion;
private final byte release;
private final byte patch;
/**
* Set to non-null if the underlying GemFire version is different from product version
*/
private Version gemfireVersion;
/** byte used as ordinal to represent this Version */
private final short ordinal;
public static final int HIGHEST_VERSION = 50;
private static final Version[] VALUES = new Version[HIGHEST_VERSION + 1];
/**
* Reserved token that cannot be used for product version but as a flag in internal contexts.
*/
private static final byte TOKEN_ORDINAL = -1;
private static final int TOKEN_ORDINAL_INT = (TOKEN_ORDINAL & 0xFF);
public static final Version TOKEN =
new Version("", "TOKEN", (byte) -1, (byte) 0, (byte) 0, (byte) 0, TOKEN_ORDINAL);
private static final byte GFE_56_ORDINAL = 0;
public static final Version GFE_56 =
new Version("GFE", "5.6", (byte) 5, (byte) 6, (byte) 0, (byte) 0, GFE_56_ORDINAL);
private static final byte GFE_57_ORDINAL = 1;
public static final Version GFE_57 =
new Version("GFE", "5.7", (byte) 5, (byte) 7, (byte) 0, (byte) 0, GFE_57_ORDINAL);
private static final byte GFE_58_ORDINAL = 3;
public static final Version GFE_58 =
new Version("GFE", "5.8", (byte) 5, (byte) 8, (byte) 0, (byte) 0, GFE_58_ORDINAL);
private static final byte GFE_603_ORDINAL = 4;
public static final Version GFE_603 =
new Version("GFE", "6.0.3", (byte) 6, (byte) 0, (byte) 3, (byte) 0, GFE_603_ORDINAL);
private static final byte GFE_61_ORDINAL = 5;
public static final Version GFE_61 =
new Version("GFE", "6.1", (byte) 6, (byte) 1, (byte) 0, (byte) 0, GFE_61_ORDINAL);
private static final byte GFE_65_ORDINAL = 6;
public static final Version GFE_65 =
new Version("GFE", "6.5", (byte) 6, (byte) 5, (byte) 0, (byte) 0, GFE_65_ORDINAL);
private static final byte GFE_651_ORDINAL = 7;
public static final Version GFE_651 =
new Version("GFE", "6.5.1", (byte) 6, (byte) 5, (byte) 1, (byte) 0, GFE_651_ORDINAL);
private static final byte GFE_6516_ORDINAL = 12;
public static final Version GFE_6516 =
new Version("GFE", "6.5.1.6", (byte) 6, (byte) 5, (byte) 1, (byte) 6, GFE_6516_ORDINAL);
private static final byte GFE_66_ORDINAL = 16;
public static final Version GFE_66 =
new Version("GFE", "6.6", (byte) 6, (byte) 6, (byte) 0, (byte) 0, GFE_66_ORDINAL);
private static final byte GFE_662_ORDINAL = 17;
public static final Version GFE_662 =
new Version("GFE", "6.6.2", (byte) 6, (byte) 6, (byte) 2, (byte) 0, GFE_662_ORDINAL);
private static final byte GFE_6622_ORDINAL = 18;
public static final Version GFE_6622 =
new Version("GFE", "6.6.2.2", (byte) 6, (byte) 6, (byte) 2, (byte) 2, GFE_6622_ORDINAL);
private static final byte GFE_70_ORDINAL = 19;
public static final Version GFE_70 =
new Version("GFE", "7.0", (byte) 7, (byte) 0, (byte) 0, (byte) 0, GFE_70_ORDINAL);
private static final byte GFE_701_ORDINAL = 20;
public static final Version GFE_701 =
new Version("GFE", "7.0.1", (byte) 7, (byte) 0, (byte) 1, (byte) 0, GFE_701_ORDINAL);
private static final byte GFE_7099_ORDINAL = 21;
public static final Version GFE_7099 =
new Version("GFE", "7.0.99", (byte) 7, (byte) 0, (byte) 99, (byte) 0, GFE_7099_ORDINAL);
private static final byte GFE_71_ORDINAL = 22;
public static final Version GFE_71 =
new Version("GFE", "7.1", (byte) 7, (byte) 1, (byte) 0, (byte) 0, GFE_71_ORDINAL);
// 23-29 available for 7.x variants
private static final byte GFE_80_ORDINAL = 30;
public static final Version GFE_80 =
new Version("GFE", "8.0", (byte) 8, (byte) 0, (byte) 0, (byte) 0, GFE_80_ORDINAL);
// 31-34 available for 8.0.x variants
private static final byte GFE_8009_ORDINAL = 31;
public static final Version GFE_8009 =
new Version("GFE", "8.0.0.9", (byte) 8, (byte) 0, (byte) 0, (byte) 9, GFE_8009_ORDINAL);
private static final byte GFE_81_ORDINAL = 35;
public static final Version GFE_81 =
new Version("GFE", "8.1", (byte) 8, (byte) 1, (byte) 0, (byte) 0, GFE_81_ORDINAL);
// 36-39 available for 8.1.x variants
private static final byte GFE_82_ORDINAL = 40;
public static final Version GFE_82 =
new Version("GFE", "8.2", (byte) 8, (byte) 2, (byte) 0, (byte) 0, GFE_82_ORDINAL);
// 41-44 available for 8.2.x variants
private static final byte GFE_90_ORDINAL = 45;
public static final Version GFE_90 =
new Version("GFE", "9.0", (byte) 9, (byte) 0, (byte) 0, (byte) 0, GFE_90_ORDINAL);
private static final byte GFE_91_ORDINAL = 50;
public static final Version GFE_91 =
new Version("GFE", "9.1", (byte) 9, (byte) 1, (byte) 0, (byte) 0, GFE_91_ORDINAL);
/**
* This constant must be set to the most current version of the product. !!! NOTE: update
* HIGHEST_VERSION when changing CURRENT !!!
*/
public static final Version CURRENT = GFE_91;
/**
* A lot of versioning code needs access to the current version's ordinal
*/
public static final short CURRENT_ORDINAL = CURRENT.ordinal();
public static final short NOT_SUPPORTED_ORDINAL = 59;
/**
* version ordinal for test Backward compatibility.
*/
private static final byte validOrdinalForTesting = 2;
public static final Version TEST_VERSION = new Version("TEST", "VERSION", (byte) 0, (byte) 0,
(byte) 0, (byte) 0, validOrdinalForTesting);
/** Creates a new instance of Version */
private Version(String product, String name, byte major, byte minor, byte release, byte patch,
byte ordinal) {
this.productName = product;
this.name = name;
this.majorVersion = major;
this.minorVersion = minor;
this.release = release;
this.patch = patch;
this.ordinal = ordinal;
this.methodSuffix = this.productName + "_" + this.majorVersion + "_" + this.minorVersion + "_"
+ this.release + "_" + this.patch;
this.gemfireVersion = null;
if (ordinal != TOKEN_ORDINAL) {
VALUES[this.ordinal] = this;
}
}
/**
* Creates a new instance of Version with a different underlying GemFire version
*/
private Version(String product, String name, byte major, byte minor, byte release, byte patch,
byte ordinal, Version gemfireVersion) {
this(product, name, major, minor, release, patch, ordinal);
this.gemfireVersion = gemfireVersion;
}
/** Return the Version represented by specified ordinal */
public static Version fromOrdinal(short ordinal, boolean forGFEClients)
throws UnsupportedVersionException {
// Un-version client(client's prior to release 5.7) doesn't send version
// byte in the handshake. So the next byte in the handshake has value 59 and
// is interpreted as version byte. We are not supporting version 59 to
// distinguish version client from unversion. Please use version ordinal 60
// after 58 if required.
if (ordinal == NOT_SUPPORTED_ORDINAL) {
throw new UnsupportedVersionException("Un-versioned clients are not supported. ");
}
if (ordinal == TOKEN_ORDINAL) {
return TOKEN;
}
// for clients also check that there must be a commands object mapping
// for processing
if ((VALUES.length < ordinal + 1) || VALUES[ordinal] == null
|| (forGFEClients && CommandInitializer.getCommands(VALUES[ordinal]) == null)) {
throw new UnsupportedVersionException(LocalizedStrings.Version_REMOTE_VERSION_NOT_SUPPORTED
.toLocalizedString(ordinal, CURRENT.name));
}
return VALUES[ordinal];
}
/**
* return the version corresponding to the given ordinal, or CURRENT if the ordinal isn't valid
*
* @param ordinal
* @return the corresponding ordinal
*/
public static Version fromOrdinalOrCurrent(short ordinal) {
if (ordinal == TOKEN_ORDINAL) {
return TOKEN;
}
final Version version;
if ((VALUES.length < ordinal + 1) || (version = VALUES[ordinal]) == null) {
return CURRENT;
}
return version;
}
/**
* Write the given ordinal (result of {@link #ordinal()}) to given {@link DataOutput}. This keeps
* the serialization of ordinal compatible with previous versions writing a single byte to
* DataOutput when possible, and a token with 2 bytes if it is large.
*
* @param out the {@link DataOutput} to write the ordinal write to
* @param ordinal the version to be written
* @param compressed if true, then use single byte for ordinal < 128, and three bytes for beyond
* that, else always use three bytes where the first byte is {@link #TOKEN_ORDINAL}; former
* mode is useful for interoperatibility with previous versions while latter to use fixed
* size for writing version; typically former will be used for P2P/client-server
* communications while latter for persisting to disk; we use the token to ensure that
* {@link #readOrdinal(DataInput)} can deal with both compressed/uncompressed cases
* seemlessly
*/
public static void writeOrdinal(DataOutput out, short ordinal, boolean compressed)
throws IOException {
if (compressed && ordinal <= Byte.MAX_VALUE) {
out.writeByte(ordinal);
} else {
out.writeByte(TOKEN_ORDINAL);
out.writeShort(ordinal);
}
}
/**
* Write this {@link Version}'s ordinal (result of {@link #ordinal()}) to given
* {@link DataOutput}. This keeps the serialization of ordinal compatible with previous versions
* writing a single byte to DataOutput when possible, and a token with 2 bytes if it is large.
*
* @param out the {@link DataOutput} to write the ordinal write to
* @param compressed if true, then use single byte for ordinal < 128, and three bytes for beyond
* that, else always use three bytes where the first byte is {@link #TOKEN_ORDINAL}; former
* mode is useful for interoperatibility with previous versions while latter to use fixed
* size for writing version; typically former will be used for P2P/client-server
* communications while latter for persisting to disk; we use the token to ensure that
* {@link #readOrdinal(DataInput)} can deal with both compressed/uncompressed cases
* seemlessly
*/
public final void writeOrdinal(DataOutput out, boolean compressed) throws IOException {
writeOrdinal(out, this.ordinal, compressed);
}
/**
* Fixed number of bytes required for serializing this version when "compressed" flag is false in
* {@link #writeOrdinal(DataOutput, boolean)}.
*/
public static final int uncompressedSize() {
return 3;
}
/**
* Fixed number of bytes required for serializing this version when "compressed" flag is true in
* {@link #writeOrdinal(DataOutput, boolean)}.
*/
public final int compressedSize() {
if (ordinal <= Byte.MAX_VALUE) {
return 1;
} else {
return 3;
}
}
/**
* Write the given ordinal (result of {@link #ordinal()}) to given {@link ByteBuffer}. This keeps
* the serialization of ordinal compatible with previous versions writing a single byte to
* DataOutput when possible, and a token with 2 bytes if it is large.
*
* @param buffer the {@link ByteBuffer} to write the ordinal write to
* @param ordinal the version to be written
* @param compressed if true, then use single byte for ordinal < 128, and three bytes for beyond
* that, else always use three bytes where the first byte is {@link #TOKEN_ORDINAL}
*/
public static void writeOrdinal(ByteBuffer buffer, short ordinal, boolean compressed)
throws IOException {
if (compressed && ordinal <= Byte.MAX_VALUE) {
buffer.put((byte) ordinal);
} else {
buffer.put(TOKEN_ORDINAL);
buffer.putShort(ordinal);
}
}
/**
* Reads ordinal as written by {@link #writeOrdinal} from given {@link DataInput}.
*/
public static short readOrdinal(DataInput in) throws IOException {
final byte ordinal = in.readByte();
if (ordinal != TOKEN_ORDINAL) {
return ordinal;
} else {
return in.readShort();
}
}
/**
* Return the Version reading from given {@link DataInput} as serialized by
* {@link #writeOrdinal(DataOutput, boolean)}.
*
* If the incoming ordinal is greater than or equal to current ordinal then this will return null
* or {@link #CURRENT} indicating that version is same as that of {@link #CURRENT} assuming that
* peer will support this JVM.
*
* This method is not meant to be used for client-server protocol since servers cannot support
* higher version clients, rather is only meant for P2P/JGroups messaging where a mixed version of
* servers can be running at the same time. Similarly cannot be used when recovering from disk
* since higher version data cannot be read.
*
* @param in the {@link DataInput} to read the version from
* @param returnNullForCurrent if true then return null if incoming version >= {@link #CURRENT}
* else return {@link #CURRENT}
*/
public static Version readVersion(DataInput in, boolean returnNullForCurrent) throws IOException {
return fromOrdinalNoThrow(readOrdinal(in), returnNullForCurrent);
}
/**
* Return the Version represented by specified ordinal while not throwing exception
* if given ordinal is higher than any known ones or does not map to an actual Version instance
* due to gaps in the version ordinal sequence.
*/
public static Version fromOrdinalNoThrow(short ordinal, boolean returnNullForCurrent) {
if (ordinal == TOKEN_ORDINAL) {
return TOKEN;
}
if (ordinal >= VALUES.length || VALUES[ordinal] == null) {
return returnNullForCurrent ? null : CURRENT;
}
return VALUES[ordinal];
}
/**
* Reads ordinal as written by {@link #writeOrdinal} from given {@link InputStream}. Returns -1 on
* end of stream.
*/
public static short readOrdinalFromInputStream(InputStream is) throws IOException {
final int ordinal = is.read();
if (ordinal != -1) {
if (ordinal != TOKEN_ORDINAL_INT) {
return (short) ordinal;
} else {
// two byte ordinal
final int ordinalPart1 = is.read();
final int ordinalPart2 = is.read();
if ((ordinalPart1 | ordinalPart2) >= 0) {
return (short) ((ordinalPart1 << 8) | ordinalPart2);
} else {
return -1;
}
}
} else {
return -1;
}
}
public Version getGemFireVersion() {
return this.gemfireVersion != null ? this.gemfireVersion : this;
}
public final String getMethodSuffix() {
return this.methodSuffix;
}
public final String getProductName() {
return this.productName;
}
public final String getName() {
return this.name;
}
public final short getMajorVersion() {
return this.majorVersion;
}
public final short getMinorVersion() {
return this.minorVersion;
}
public final short getRelease() {
return this.release;
}
public final short getPatch() {
return this.patch;
}
public final short ordinal() {
return this.ordinal;
}
/**
* Returns whether this Version is compatible with the input Version
*
* @param version The Version to compare
* @return whether this Version is compatible with the input Version
*/
public boolean compatibleWith(Version version) {
return true;
}
/**
* Finds the Version instance corresponding to the given ordinal and returns the result of
* compareTo(Version)
*
* @param other the ordinal of the other Version object
* @return negative if this version is older, positive if this version is newer, 0 if this is the
* same version
*/
public final int compareTo(short other) {
// first try to find the actual Version object
Version v = fromOrdinalNoThrow(other, false);
if (v == null) {
// failing that we use the old method of comparing Versions:
return this.ordinal() - other;
}
return compareTo(v);
}
/**
* {@inheritDoc}
*/
@Override
public final int compareTo(Version other) {
if (other != null) {
// [bruce] old implementation used ordinals for comparison, but this requires
// ordinals to be in increasing order, which may not always be possible
// // byte min/max can't overflow int, so use (a-b)
// final int thisOrdinal = this.ordinal;
// final int otherOrdinal = o.ordinal;
// return (thisOrdinal - otherOrdinal);
// [bruce] new implementation uses major/minor/patch/build
if (this.majorVersion > other.majorVersion) {
return 1;
} else if (other.majorVersion > this.majorVersion) {
return -1;
}
if (this.minorVersion > other.minorVersion) {
return 1;
} else if (other.minorVersion > this.minorVersion) {
return -1;
}
if (this.release > other.release) {
return 1;
} else if (other.release > this.release) {
return -1;
}
if (this.patch > other.patch) {
return 1;
} else if (other.patch > this.patch) {
return -1;
}
return 0;
} else {
return 1;
}
}
/**
* Returns a string representation for this Version.
*
* @return the name of this operation.
*/
@Override
public String toString() {
if (this.gemfireVersion == null) {
return this.productName + " " + this.name;
} else {
return this.productName + " " + this.name + '[' + this.gemfireVersion.toString() + ']';
}
}
public static String toString(short ordinal) {
if (ordinal <= CURRENT.ordinal) {
try {
return fromOrdinal(ordinal, false).toString();
} catch (UnsupportedVersionException uve) {
// ignored in toString()
}
}
return "UNKNOWN[ordinal=" + ordinal + ']';
}
@Override
public boolean equals(Object other) {
if (other == this)
return true;
if (other != null && other.getClass() == Version.class) {
return this.ordinal == ((Version) other).ordinal;
} else {
return false;
}
}
public boolean equals(Version other) {
return other != null && this.ordinal == other.ordinal;
}
@Override
public int hashCode() {
int result = 17;
final int mult = 37;
result = mult * result + this.ordinal;
return result;
}
public byte[] toBytes() {
byte[] bytes = new byte[2];
bytes[0] = (byte) (ordinal >> 8);
bytes[1] = (byte) ordinal;
return bytes;
}
public boolean isPre65() {
return compareTo(Version.GFE_65) < 0;
}
}