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// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc. All rights reserved.
//
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file or at
// https://developers.google.com/open-source/licenses/bsd
package com.google.protobuf;
import java.util.logging.Logger;
/**
* Provides the version of this Protobuf Java runtime, and methods for Protobuf Java gencode to
* validate that versions are compatible. Fields and methods in this class should be only accessed
* by related unit tests and Protobuf Java gencode, and should not be used elsewhere.
*/
public final class RuntimeVersion {
/** Indicates the domain of the Protobuf artifact. */
public enum RuntimeDomain {
GOOGLE_INTERNAL,
PUBLIC,
}
// The version of this runtime.
// Automatically updated by Protobuf release process. Do not edit manually.
// These OSS versions are not stripped to avoid merging conflicts.
public static final RuntimeDomain OSS_DOMAIN = RuntimeDomain.PUBLIC;
public static final int OSS_MAJOR = 4;
public static final int OSS_MINOR = 29;
public static final int OSS_PATCH = 2;
public static final String OSS_SUFFIX = "";
public static final RuntimeDomain DOMAIN = OSS_DOMAIN;
public static final int MAJOR = OSS_MAJOR;
public static final int MINOR = OSS_MINOR;
public static final int PATCH = OSS_PATCH;
public static final String SUFFIX = OSS_SUFFIX;
private static final int MAX_WARNING_COUNT = 20;
@SuppressWarnings("NonFinalStaticField")
static int majorWarningLoggedCount = 0;
@SuppressWarnings("NonFinalStaticField")
static int minorWarningLoggedCount = 0;
private static final String VERSION_STRING = versionString(MAJOR, MINOR, PATCH, SUFFIX);
private static final Logger logger = Logger.getLogger(RuntimeVersion.class.getName());
/**
* Validates that the gencode version is compatible with this runtime version according to
* https://protobuf.dev/support/cross-version-runtime-guarantee/.
*
* This method is currently only used by Protobuf Java **full version** gencode. Do not call it
* elsewhere.
*
* @param domain the domain where Protobuf Java code was generated.
* @param major the major version of Protobuf Java gencode.
* @param minor the minor version of Protobuf Java gencode.
* @param patch the micro/patch version of Protobuf Java gencode.
* @param suffix the version suffix e.g. "-rc2", "-dev", etc.
* @param location the debugging location e.g. generated Java class to put in the error messages.
* @throws ProtobufRuntimeVersionException if versions are incompatible.
*/
public static void validateProtobufGencodeVersion(
RuntimeDomain domain, int major, int minor, int patch, String suffix, String location) {
if (checkDisabled()) {
return;
}
validateProtobufGencodeVersionImpl(domain, major, minor, patch, suffix, location);
}
/** The actual implementation of version validation. */
private static void validateProtobufGencodeVersionImpl(
RuntimeDomain domain, int major, int minor, int patch, String suffix, String location) {
if (checkDisabled()) {
return;
}
String gencodeVersionString = versionString(major, minor, patch, suffix);
// Check that version numbers are valid.
if (major < 0 || minor < 0 || patch < 0) {
throw new ProtobufRuntimeVersionException("Invalid gencode version: " + gencodeVersionString);
}
// Check that runtime domain is the same as the gencode domain.
if (domain != DOMAIN) {
throw new ProtobufRuntimeVersionException(
String.format(
"Detected mismatched Protobuf Gencode/Runtime domains when loading %s: gencode %s,"
+ " runtime %s. Cross-domain usage of Protobuf is not supported.",
location, domain, DOMAIN));
}
// Check that runtime major version is the same as the gencode major version.
if (major != MAJOR) {
if (major == MAJOR - 1 && majorWarningLoggedCount < MAX_WARNING_COUNT) {
logger.warning(
String.format(
" Protobuf gencode version %s is exactly one major version older than the runtime"
+ " version %s at %s. Please update the gencode to avoid compatibility"
+ " violations in the next runtime release.",
gencodeVersionString, VERSION_STRING, location));
majorWarningLoggedCount++;
} else {
throw new ProtobufRuntimeVersionException(
String.format(
"Detected mismatched Protobuf Gencode/Runtime major versions when loading %s:"
+ " gencode %s, runtime %s. Same major version is required.",
location, gencodeVersionString, VERSION_STRING));
}
}
// Check that runtime version is newer than the gencode version.
if (MINOR < minor || (minor == MINOR && PATCH < patch)) {
throw new ProtobufRuntimeVersionException(
String.format(
"Detected incompatible Protobuf Gencode/Runtime versions when loading %s: gencode %s,"
+ " runtime %s. Runtime version cannot be older than the linked gencode version.",
location, gencodeVersionString, VERSION_STRING));
}
// Check that runtime version suffix is the same as the gencode version suffix.
if (!suffix.equals(SUFFIX)) {
throw new ProtobufRuntimeVersionException(
String.format(
"Detected mismatched Protobuf Gencode/Runtime version suffixes when loading %s:"
+ " gencode %s, runtime %s. Version suffixes must be the same.",
location, gencodeVersionString, VERSION_STRING));
}
}
/**
* A runtime exception to be thrown by the version validator if version is not well defined or
* versions mismatch.
*/
public static final class ProtobufRuntimeVersionException extends RuntimeException {
public ProtobufRuntimeVersionException(String message) {
super(message);
}
}
/** Gets the version string given the version segments. */
private static String versionString(int major, int minor, int patch, String suffix) {
return String.format("%d.%d.%d%s", major, minor, patch, suffix);
}
private static boolean checkDisabled() {
// Check the environmental variable, and temporarily disable validation if it's set to true.
String disableFlag = java.lang.System.getenv("TEMPORARILY_DISABLE_PROTOBUF_VERSION_CHECK");
if ((disableFlag != null && disableFlag.equals("true"))) {
return true;
}
return false;
}
private RuntimeVersion() {}
}