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nfs41: add possibility to specify server implementation details
Motivation: The EXCHANGE_ID operation allows server to expose his implementation information. However this information in nfs4j is hardcoded and can't be used by implementers. Modification: Update NFSServerV41#Builder to allow custom server implementations. Result: a possibility to specify server implementation details. Acked-by: Paul Millar Target: master
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,69 @@ | ||
| /* | ||
| * Copyright (c) 2009 - 2023 Deutsches Elektronen-Synchroton, | ||
| * Member of the Helmholtz Association, (DESY), HAMBURG, GERMANY | ||
| * | ||
| * This library is free software; you can redistribute it and/or modify | ||
| * it under the terms of the GNU Library General Public License as | ||
| * published by the Free Software Foundation; either version 2 of the | ||
| * License, or (at your option) any later version. | ||
| * | ||
| * This library is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| * GNU Library General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU Library General Public | ||
| * License along with this program (see the file COPYING.LIB for more | ||
| * details); if not, write to the Free Software Foundation, Inc., | ||
| * 675 Mass Ave, Cambridge, MA 02139, USA. | ||
| */ | ||
| package org.dcache.nfs.util; | ||
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|
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| import java.io.IOException; | ||
| import java.io.InputStream; | ||
| import java.net.URL; | ||
| import java.security.CodeSource; | ||
| import java.security.ProtectionDomain; | ||
| import java.time.Instant; | ||
| import java.time.format.DateTimeParseException; | ||
| import java.util.Optional; | ||
| import java.util.jar.Attributes; | ||
| import java.util.jar.JarInputStream; | ||
| import java.util.jar.Manifest; | ||
|
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| public class Misc { | ||
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|
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| private Misc() {} | ||
|
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| /** | ||
| * Get package build time. This method uses {@code Build-Time} attribute in the | ||
| * jar Manifest file. | ||
| * @return optional instant of package build time. | ||
| */ | ||
| public static Optional<Instant> getBuildTime() { | ||
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| try { | ||
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| ProtectionDomain pd = Misc.class.getProtectionDomain(); | ||
| CodeSource cs = pd.getCodeSource(); | ||
| URL u = cs.getLocation(); | ||
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| InputStream is = u.openStream(); | ||
| JarInputStream jis = new JarInputStream(is); | ||
| Manifest m = jis.getManifest(); | ||
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| if (m != null) { | ||
| Attributes as = m.getMainAttributes(); | ||
| String buildTime = as.getValue("Build-Time"); | ||
| if (buildTime != null) { | ||
| return Optional.of(Instant.parse(buildTime)); | ||
| } | ||
| } | ||
|
|
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| } catch (IOException | DateTimeParseException e) { | ||
| // bad luck | ||
| } | ||
|
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| return Optional.empty(); | ||
| } | ||
| } |
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