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RemotingVersionInfo.java
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RemotingVersionInfo.java
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/*
* The MIT License
*
* Copyright (c) 2018, CloudBees, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package jenkins.slaves;
import hudson.util.VersionNumber;
import org.kohsuke.accmod.Restricted;
import org.kohsuke.accmod.restrictions.NoExternalUse;
import javax.annotation.CheckForNull;
import javax.annotation.Nonnull;
import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;
import java.util.logging.Level;
import java.util.logging.Logger;
// TODO: Make the API public (JENKINS-48766)
/**
* Provides information about Remoting versions used within the core.
* @author Oleg Nenashev
*/
@Restricted(NoExternalUse.class)
public class RemotingVersionInfo {
private static final Logger LOGGER = Logger.getLogger(RemotingVersionInfo.class.getName());
private static final String RESOURCE_NAME="remoting-info.properties";
@CheckForNull
private static VersionNumber EMBEDDED_VERSION;
@CheckForNull
private static VersionNumber MINIMUM_SUPPORTED_VERSION;
private RemotingVersionInfo() {}
static {
Properties props = new Properties();
try (InputStream is = RemotingVersionInfo.class.getResourceAsStream(RESOURCE_NAME)) {
if(is!=null) {
props.load(is);
}
} catch (IOException e) {
LOGGER.log(Level.WARNING, "Failed to load Remoting Info from " + RESOURCE_NAME, e);
}
EMBEDDED_VERSION = tryExtractVersion(props, "remoting.embedded.version");
MINIMUM_SUPPORTED_VERSION = tryExtractVersion(props, "remoting.minimum.supported.version");
}
@CheckForNull
private static VersionNumber tryExtractVersion(@Nonnull Properties props, @Nonnull String propertyName) {
String prop = props.getProperty(propertyName);
if (prop == null) {
LOGGER.log(Level.FINE, "Property {0} is not defined in {1}", new Object[] {propertyName, RESOURCE_NAME});
return null;
}
if(prop.contains("${")) { // Due to whatever reason, Maven does not nullify them
LOGGER.log(Level.WARNING, "Property {0} in {1} has unresolved variable(s). Raw value: {2}",
new Object[] {propertyName, RESOURCE_NAME, prop});
return null;
}
try {
return new VersionNumber(prop);
} catch (RuntimeException ex) {
LOGGER.log(Level.WARNING, String.format("Failed to parse version for for property %s in %s. Raw Value: %s",
propertyName, RESOURCE_NAME, prop), ex);
return null;
}
}
@CheckForNull
public static VersionNumber getEmbeddedVersion() {
return EMBEDDED_VERSION;
}
@CheckForNull
public static VersionNumber getMinimumSupportedVersion() {
return MINIMUM_SUPPORTED_VERSION;
}
}