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/*
* Copyright (c) 2008-2020, Hazelcast, Inc. All Rights Reserved.
*
* Licensed 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 com.hazelcast.instance;
import com.hazelcast.core.HazelcastException;
import com.hazelcast.logging.ILogger;
import com.hazelcast.logging.Logger;
import java.io.InputStream;
import java.lang.reflect.Field;
import java.util.Properties;
import static com.hazelcast.internal.nio.IOUtil.closeResource;
import static com.hazelcast.internal.util.EmptyStatement.ignore;
/**
* Provides information about current Hazelcast build.
*/
public final class BuildInfoProvider {
public static final String HAZELCAST_INTERNAL_OVERRIDE_VERSION = "hazelcast.internal.override.version";
public static final String HAZELCAST_INTERNAL_OVERRIDE_ENTERPRISE = "hazelcast.internal.override.enterprise";
private static final String HAZELCAST_INTERNAL_OVERRIDE_BUILD = "hazelcast.build";
private static final ILogger LOGGER;
private static final BuildInfo BUILD_INFO_CACHE;
static {
LOGGER = Logger.getLogger(BuildInfoProvider.class);
BUILD_INFO_CACHE = populateBuildInfoCache();
}
private BuildInfoProvider() {
}
private static BuildInfo populateBuildInfoCache() {
return getBuildInfoInternalVersion(Overrides.DISABLED);
}
/**
* Parses {@code hazelcast-runtime.properties} for {@code BuildInfo}; also checks for overrides in System.properties.
* Never cache result of this method in a static context - as it can change due versions overriding - this method
* already does caching whenever it's possible - i.e. when overrides is disabled.
*
* @return the parsed BuildInfo
*/
public static BuildInfo getBuildInfo() {
if (Overrides.isEnabled()) {
// never use cache when override is enabled -> we need to re-parse everything
Overrides overrides = Overrides.fromProperties();
return getBuildInfoInternalVersion(overrides);
}
return BUILD_INFO_CACHE;
}
private static BuildInfo getBuildInfoInternalVersion(Overrides overrides) {
// If you have a compilation error at GeneratedBuildProperties then run 'mvn clean install'
// the GeneratedBuildProperties class is generated at a compile-time
BuildInfo buildInfo = readBuildPropertiesClass(GeneratedBuildProperties.class, null, overrides);
try {
Class enterpriseClass = BuildInfoProvider.class.getClassLoader()
.loadClass("com.hazelcast.instance.GeneratedEnterpriseBuildProperties");
if (enterpriseClass.getClassLoader() == BuildInfoProvider.class.getClassLoader()) {
//only read the enterprise properties if there were loaded by the same classloader
//as BuildInfoProvider and not e.g. a parent classloader.
buildInfo = readBuildPropertiesClass(enterpriseClass, buildInfo, overrides);
}
} catch (ClassNotFoundException e) {
ignore(e);
}
Properties jetProperties = loadPropertiesFromResource("jet-runtime.properties");
return withJetProperties(jetProperties, buildInfo);
}
private static BuildInfo withJetProperties(Properties properties, BuildInfo buildInfo) {
if (properties.isEmpty()) {
return buildInfo;
}
String version = properties.getProperty("jet.version");
String build = properties.getProperty("jet.build");
String revision = properties.getProperty("jet.git.revision");
JetBuildInfo jetBuildInfo = new JetBuildInfo(version, build, revision);
return buildInfo.withJetBuildInfo(jetBuildInfo);
}
private static Properties loadPropertiesFromResource(String resourceName) {
InputStream properties = BuildInfoProvider.class.getClassLoader().getResourceAsStream(resourceName);
Properties runtimeProperties = new Properties();
try {
if (properties != null) {
runtimeProperties.load(properties);
}
} catch (Exception ignored) {
ignore(ignored);
} finally {
closeResource(properties);
}
return runtimeProperties;
}
private static BuildInfo readBuildPropertiesClass(Class clazz, BuildInfo upstreamBuildInfo, Overrides overrides) {
String version = readStaticStringField(clazz, "VERSION");
String build = readStaticStringField(clazz, "BUILD");
String revision = readStaticStringField(clazz, "REVISION");
String distribution = readStaticStringField(clazz, "DISTRIBUTION");
String commitId = readStaticStringField(clazz, "COMMIT_ID");
revision = checkMissingExpressionValue(revision, "${git.commit.id.abbrev}");
commitId = checkMissingExpressionValue(commitId, "${git.commit.id}");
int buildNumber = Integer.parseInt(build);
boolean enterprise = !"Hazelcast".equals(distribution);
String serialVersionString = readStaticStringField(clazz, "SERIALIZATION_VERSION");
byte serialVersion = Byte.parseByte(serialVersionString);
return overrides.apply(version, build, revision, buildNumber, enterprise, serialVersion, commitId, upstreamBuildInfo);
}
//todo: move elsewhere
private static String readStaticStringField(Class clazz, String fieldName) {
try {
Field field = clazz.getField(fieldName);
return (String) field.get(null);
} catch (NoSuchFieldException e) {
throw new HazelcastException(e);
} catch (IllegalAccessException e) {
throw new HazelcastException(e);
}
}
private static String checkMissingExpressionValue(String value, String expression) {
if (!value.isEmpty() && value.equals(expression)) {
return "";
} else {
return value;
}
}
private static final class Overrides {
private static final Overrides DISABLED = new Overrides(null, -1, null);
private String version;
private int buildNo;
private Boolean enterprise;
private Overrides(String version, int build, Boolean enterprise) {
this.version = version;
this.buildNo = build;
this.enterprise = enterprise;
}
private BuildInfo apply(String version, String build, String revision, int buildNumber,
boolean enterprise, byte serialVersion, String commitId, BuildInfo upstreamBuildInfo) {
if (buildNo != -1) {
build = String.valueOf(buildNo);
buildNumber = buildNo;
}
if (this.version != null) {
LOGGER.info("Overriding hazelcast version with system property value " + this.version);
version = this.version;
}
if (this.enterprise != null) {
LOGGER.info("Overriding hazelcast enterprise flag with system property value " + this.enterprise);
enterprise = this.enterprise;
}
return new BuildInfo(version, build, revision, buildNumber, enterprise, serialVersion,
commitId, upstreamBuildInfo);
}
private static boolean isEnabled() {
return System.getProperty(HAZELCAST_INTERNAL_OVERRIDE_BUILD) != null
|| System.getProperty(HAZELCAST_INTERNAL_OVERRIDE_VERSION) != null
|| System.getProperty(HAZELCAST_INTERNAL_OVERRIDE_ENTERPRISE) != null;
}
private static Overrides fromProperties() {
String version = System.getProperty(HAZELCAST_INTERNAL_OVERRIDE_VERSION);
int build = Integer.getInteger(HAZELCAST_INTERNAL_OVERRIDE_BUILD, -1);
Boolean enterprise = null;
String enterpriseOverride = System.getProperty(HAZELCAST_INTERNAL_OVERRIDE_ENTERPRISE);
if (enterpriseOverride != null) {
enterprise = Boolean.valueOf(enterpriseOverride);
}
return new Overrides(version, build, enterprise);
}
}
}
