org.glowroot.shaded.netty.util.Version Maven / Gradle / Ivy
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/*
* Copyright 2013 The Netty Project
*
* The Netty Project 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.glowroot.shaded.netty.util;
import org.glowroot.shaded.netty.util.internal.PlatformDependent;
import java.io.InputStream;
import java.net.URL;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Enumeration;
import java.util.HashSet;
import java.util.Map;
import java.util.Properties;
import java.util.Set;
import java.util.TreeMap;
/**
* Retrieves the version information of available Netty artifacts.
*
* This class retrieves the version information from {@code META-INF/org.glowroot.shaded.netty.versions.properties}, which is
* generated in build time. Note that it may not be possible to retrieve the information completely, depending on
* your environment, such as the specified {@link ClassLoader}, the current {@link SecurityManager}.
*
*/
public final class Version {
private static final String PROP_VERSION = ".version";
private static final String PROP_BUILD_DATE = ".buildDate";
private static final String PROP_COMMIT_DATE = ".commitDate";
private static final String PROP_SHORT_COMMIT_HASH = ".shortCommitHash";
private static final String PROP_LONG_COMMIT_HASH = ".longCommitHash";
private static final String PROP_REPO_STATUS = ".repoStatus";
/**
* Retrieves the version information of Netty artifacts using the current
* {@linkplain Thread#getContextClassLoader() context class loader}.
*
* @return A {@link Map} whose keys are Maven artifact IDs and whose values are {@link Version}s
*/
public static Map identify() {
return identify(null);
}
/**
* Retrieves the version information of Netty artifacts using the specified {@link ClassLoader}.
*
* @return A {@link Map} whose keys are Maven artifact IDs and whose values are {@link Version}s
*/
public static Map identify(ClassLoader classLoader) {
if (classLoader == null) {
classLoader = PlatformDependent.getContextClassLoader();
}
// Collect all properties.
Properties props = new Properties();
try {
Enumeration resources = classLoader.getResources("META-INF/org.glowroot.shaded.netty.versions.properties");
while (resources.hasMoreElements()) {
URL url = resources.nextElement();
InputStream in = url.openStream();
try {
props.load(in);
} finally {
try {
in.close();
} catch (Exception ignore) {
// Ignore.
}
}
}
} catch (Exception ignore) {
// Not critical. Just ignore.
}
// Collect all artifactIds.
Set artifactIds = new HashSet();
for (Object o: props.keySet()) {
String k = (String) o;
int dotIndex = k.indexOf('.');
if (dotIndex <= 0) {
continue;
}
String artifactId = k.substring(0, dotIndex);
// Skip the entries without required information.
if (!props.containsKey(artifactId + PROP_VERSION) ||
!props.containsKey(artifactId + PROP_BUILD_DATE) ||
!props.containsKey(artifactId + PROP_COMMIT_DATE) ||
!props.containsKey(artifactId + PROP_SHORT_COMMIT_HASH) ||
!props.containsKey(artifactId + PROP_LONG_COMMIT_HASH) ||
!props.containsKey(artifactId + PROP_REPO_STATUS)) {
continue;
}
artifactIds.add(artifactId);
}
Map versions = new TreeMap();
for (String artifactId: artifactIds) {
versions.put(
artifactId,
new Version(
artifactId,
props.getProperty(artifactId + PROP_VERSION),
parseIso8601(props.getProperty(artifactId + PROP_BUILD_DATE)),
parseIso8601(props.getProperty(artifactId + PROP_COMMIT_DATE)),
props.getProperty(artifactId + PROP_SHORT_COMMIT_HASH),
props.getProperty(artifactId + PROP_LONG_COMMIT_HASH),
props.getProperty(artifactId + PROP_REPO_STATUS)));
}
return versions;
}
private static long parseIso8601(String value) {
try {
return new SimpleDateFormat("yyyy-MM-dd HH:mm:ss Z").parse(value).getTime();
} catch (ParseException ignored) {
return 0;
}
}
/**
* Prints the version information to {@link System#err}.
*/
public static void main(String[] args) {
for (Version v: identify().values()) {
System.err.println(v);
}
}
private final String artifactId;
private final String artifactVersion;
private final long buildTimeMillis;
private final long commitTimeMillis;
private final String shortCommitHash;
private final String longCommitHash;
private final String repositoryStatus;
private Version(
String artifactId, String artifactVersion,
long buildTimeMillis, long commitTimeMillis,
String shortCommitHash, String longCommitHash, String repositoryStatus) {
this.artifactId = artifactId;
this.artifactVersion = artifactVersion;
this.buildTimeMillis = buildTimeMillis;
this.commitTimeMillis = commitTimeMillis;
this.shortCommitHash = shortCommitHash;
this.longCommitHash = longCommitHash;
this.repositoryStatus = repositoryStatus;
}
public String artifactId() {
return artifactId;
}
public String artifactVersion() {
return artifactVersion;
}
public long buildTimeMillis() {
return buildTimeMillis;
}
public long commitTimeMillis() {
return commitTimeMillis;
}
public String shortCommitHash() {
return shortCommitHash;
}
public String longCommitHash() {
return longCommitHash;
}
public String repositoryStatus() {
return repositoryStatus;
}
@Override
public String toString() {
return artifactId + '-' + artifactVersion + '.' + shortCommitHash +
("clean".equals(repositoryStatus)? "" : " (repository: " + repositoryStatus + ')');
}
}