202 lines
6.9 KiB
Java
202 lines
6.9 KiB
Java
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/*
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* Copyright 2013 The Netty Project
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*
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* The Netty Project licenses this file to you under the Apache License,
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* version 2.0 (the "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*/
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package io.netty.util;
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import java.io.InputStream;
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import java.net.URL;
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import java.text.ParseException;
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import java.text.SimpleDateFormat;
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import java.util.Enumeration;
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import java.util.HashSet;
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import java.util.Map;
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import java.util.Properties;
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import java.util.Set;
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import java.util.TreeMap;
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/**
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* Retrieves the version information of available Netty artifacts.
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* <p>
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* This class retrieves the version information from {@code META-INF/io.netty.versions.properties}, which is
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* generated in build time. Note that it may not be possible to retrieve the information completely, depending on
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* your environment, such as the specified {@link ClassLoader}, the current {@link SecurityManager}.
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* </p>
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*/
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public final class Version {
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private static final String PROP_VERSION = ".version";
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private static final String PROP_BUILD_DATE = ".buildDate";
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private static final String PROP_COMMIT_DATE = ".commitDate";
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private static final String PROP_SHORT_COMMIT_HASH = ".shortCommitHash";
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private static final String PROP_LONG_COMMIT_HASH = ".longCommitHash";
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private static final String PROP_REPO_STATUS = ".repoStatus";
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/**
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* Retrieves the version information of Netty artifacts using the current
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* {@linkplain Thread#getContextClassLoader() context class loader}.
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*
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* @return A {@link Map} whose keys are Maven artifact IDs and whose values are {@link Version}s
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*/
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public static Map<String, Version> identify() {
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return identify(null);
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}
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/**
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* Retrieves the version information of Netty artifacts using the specified {@link ClassLoader}.
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*
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* @return A {@link Map} whose keys are Maven artifact IDs and whose values are {@link Version}s
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*/
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public static Map<String, Version> identify(ClassLoader classLoader) {
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if (classLoader == null) {
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classLoader = Thread.currentThread().getContextClassLoader();
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}
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// Collect all properties.
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Properties props = new Properties();
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try {
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Enumeration<URL> resources = classLoader.getResources("META-INF/io.netty.versions.properties");
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while (resources.hasMoreElements()) {
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URL url = resources.nextElement();
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InputStream in = url.openStream();
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try {
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props.load(in);
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} finally {
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try {
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in.close();
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} catch (Exception ignore) {
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// Ignore.
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}
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}
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}
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} catch (Exception ignore) {
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// Not critical. Just ignore.
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}
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// Collect all artifactIds.
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Set<String> artifactIds = new HashSet<String>();
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for (Object o: props.keySet()) {
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String k = (String) o;
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int dotIndex = k.indexOf('.');
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if (dotIndex <= 0) {
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continue;
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}
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String artifactId = k.substring(0, dotIndex);
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// Skip the entries without required information.
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if (!props.containsKey(artifactId + PROP_VERSION) ||
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!props.containsKey(artifactId + PROP_BUILD_DATE) ||
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!props.containsKey(artifactId + PROP_COMMIT_DATE) ||
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!props.containsKey(artifactId + PROP_SHORT_COMMIT_HASH) ||
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!props.containsKey(artifactId + PROP_LONG_COMMIT_HASH) ||
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!props.containsKey(artifactId + PROP_REPO_STATUS)) {
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continue;
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}
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artifactIds.add(artifactId);
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}
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Map<String, Version> versions = new TreeMap<String, Version>();
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for (String artifactId: artifactIds) {
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versions.put(
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artifactId,
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new Version(
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artifactId,
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props.getProperty(artifactId + PROP_VERSION),
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parseIso8601(props.getProperty(artifactId + PROP_BUILD_DATE)),
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parseIso8601(props.getProperty(artifactId + PROP_COMMIT_DATE)),
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props.getProperty(artifactId + PROP_SHORT_COMMIT_HASH),
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props.getProperty(artifactId + PROP_LONG_COMMIT_HASH),
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props.getProperty(artifactId + PROP_REPO_STATUS)));
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}
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return versions;
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}
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private static long parseIso8601(String value) {
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try {
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return new SimpleDateFormat("yyyy-MM-dd HH:mm:ss Z").parse(value).getTime();
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} catch (ParseException e) {
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return 0;
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}
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}
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/**
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* Prints the version information to {@link System#err}.
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*/
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public static void main(String[] args) {
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for (Version v: identify().values()) {
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System.err.println(v);
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}
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}
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private final String artifactId;
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private final String artifactVersion;
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private final long buildTimeMillis;
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private final long commitTimeMillis;
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private final String shortCommitHash;
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private final String longCommitHash;
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private final String repositoryStatus;
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private Version(
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String artifactId, String artifactVersion,
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long buildTimeMillis, long commitTimeMillis,
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String shortCommitHash, String longCommitHash, String repositoryStatus) {
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this.artifactId = artifactId;
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this.artifactVersion = artifactVersion;
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this.buildTimeMillis = buildTimeMillis;
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this.commitTimeMillis = commitTimeMillis;
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this.shortCommitHash = shortCommitHash;
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this.longCommitHash = longCommitHash;
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this.repositoryStatus = repositoryStatus;
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}
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public String artifactId() {
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return artifactId;
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}
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public String artifactVersion() {
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return artifactVersion;
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}
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public long buildTimeMillis() {
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return buildTimeMillis;
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}
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public long commitTimeMillis() {
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return commitTimeMillis;
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}
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public String shortCommitHash() {
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return shortCommitHash;
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}
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public String longCommitHash() {
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return longCommitHash;
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}
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public String repositoryStatus() {
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return repositoryStatus;
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}
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@Override
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public String toString() {
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return artifactId + '-' + artifactVersion + '.' + shortCommitHash +
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("clean".equals(repositoryStatus)? "" : " (repository: " + repositoryStatus + ')');
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}
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}
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