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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;
import org.elasticsearch.common.Booleans;
import org.elasticsearch.common.io.FileSystemUtils;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.io.stream.StreamOutput;
import java.io.IOException;
import java.net.URL;
import java.security.CodeSource;
import java.util.jar.JarInputStream;
import java.util.jar.Manifest;
/**
* Information about a build of Elasticsearch.
*/
public class Build {
/**
* The current build of Elasticsearch. Filled with information scanned at
* startup from the jar.
*/
public static final Build CURRENT;
static {
final String shortHash;
final String date;
final boolean isSnapshot;
final String esPrefix = "elasticsearch-" + Version.CURRENT;
final URL url = getElasticsearchCodeSourceLocation();
final String urlStr = url == null ? "" : url.toString();
if (urlStr.startsWith("file:/") && (urlStr.endsWith(esPrefix + ".jar") || urlStr.endsWith(esPrefix + "-SNAPSHOT.jar"))) {
try (JarInputStream jar = new JarInputStream(FileSystemUtils.openFileURLStream(url))) {
Manifest manifest = jar.getManifest();
shortHash = manifest.getMainAttributes().getValue("Change");
date = manifest.getMainAttributes().getValue("Build-Date");
isSnapshot = "true".equals(manifest.getMainAttributes().getValue("X-Compile-Elasticsearch-Snapshot"));
} catch (IOException e) {
throw new RuntimeException(e);
}
} else {
// not running from the official elasticsearch jar file (unit tests, IDE, uber client jar, shadiness)
shortHash = "Unknown";
date = "Unknown";
final String buildSnapshot = System.getProperty("build.snapshot");
if (buildSnapshot != null) {
try {
Class.forName("com.carrotsearch.randomizedtesting.RandomizedContext");
} catch (final ClassNotFoundException e) {
// we are not in tests but build.snapshot is set, bail hard
throw new IllegalStateException("build.snapshot set to [" + buildSnapshot + "] but not running tests");
}
isSnapshot = Booleans.parseBoolean(buildSnapshot);
} else {
isSnapshot = true;
}
}
if (shortHash == null) {
throw new IllegalStateException("Error finding the build shortHash. " +
"Stopping Elasticsearch now so it doesn't run in subtly broken ways. This is likely a build bug.");
}
if (date == null) {
throw new IllegalStateException("Error finding the build date. " +
"Stopping Elasticsearch now so it doesn't run in subtly broken ways. This is likely a build bug.");
}
CURRENT = new Build(shortHash, date, isSnapshot);
}
private final boolean isSnapshot;
/**
* The location of the code source for Elasticsearch
*
* @return the location of the code source for Elasticsearch which may be null
*/
static URL getElasticsearchCodeSourceLocation() {
final CodeSource codeSource = Build.class.getProtectionDomain().getCodeSource();
return codeSource == null ? null : codeSource.getLocation();
}
private final String shortHash;
private final String date;
public Build(String shortHash, String date, boolean isSnapshot) {
this.shortHash = shortHash;
this.date = date;
this.isSnapshot = isSnapshot;
}
public String shortHash() {
return shortHash;
}
public String date() {
return date;
}
public static Build readBuild(StreamInput in) throws IOException {
String hash = in.readString();
String date = in.readString();
boolean snapshot = in.readBoolean();
return new Build(hash, date, snapshot);
}
public static void writeBuild(Build build, StreamOutput out) throws IOException {
out.writeString(build.shortHash());
out.writeString(build.date());
out.writeBoolean(build.isSnapshot());
}
public boolean isSnapshot() {
return isSnapshot;
}
@Override
public String toString() {
return "[" + shortHash + "][" + date + "]";
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
Build build = (Build) o;
if (isSnapshot != build.isSnapshot) {
return false;
}
if (!shortHash.equals(build.shortHash)) {
return false;
}
return date.equals(build.date);
}
@Override
public int hashCode() {
int result = (isSnapshot ? 1 : 0);
result = 31 * result + shortHash.hashCode();
result = 31 * result + date.hashCode();
return result;
}
}