/*
* Copyright ( c ) 2019 , Oracle and / or its affiliates . All rights reserved .
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER .
*
* This code is free software ; you can redistribute it and / or modify it
* under the terms of the GNU General Public License version 2 only , as
* published by the Free Software Foundation .
*
* This code 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 General Public License
* version 2 for more details ( a copy is included in the LICENSE file that
* accompanied this code ) .
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work ; if not , write to the Free Software Foundation ,
* Inc . , 51 Franklin St , Fifth Floor , Boston , MA 02110 - 1301 USA .
*
* Please contact Oracle , 500 Oracle Parkway , Redwood Shores , CA 94065 USA
* or visit www . oracle . com if you need additional information or have any
* questions .
*/
/**
* @ test
* @ bug 8233922
* @ modules java . base / jdk . internal . module
* @ library / test / lib
* @ build ServiceBinding TestBootLayer
* @ run testng ServiceBinding
* @ summary Test service binding with incubator modules
*/
import java.io.File;
import java.io.OutputStream;
import java.lang.module.ModuleDescriptor;
import java.lang.module.Configuration;
import java.lang.module.ModuleFinder;
import java.lang.module.ResolvedModule;
import java.nio.file.Path;
import java.nio.file.Files;
import java.util.List;
import java.util.Set;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import java.util.stream.Stream;
import static java.lang.module.ModuleDescriptor.newModule;
import jdk.internal.module.ModuleInfoWriter;
import jdk.internal.module.ModuleResolution;
import org.testng.annotations.Test;
import jdk.test.lib.process.ProcessTools;
import jdk.test.lib.process.OutputAnalyzer;
@Test
public class ServiceBinding {
private static final Path HERE = Path.of("." );
/**
* module m1 uses p . S
* ( incubating ) module m2 requires m1 provides p . S
*/
public void test1() throws Exception {
Path mlib = Files.createTempDirectory(HERE, "mlib" );
var m1 = newModule("m1" ).exports("p" ).uses("p.S" ).build();
var m2 = newModule("m2" ).requires("m1" ).provides("p.S" , List.of("impl.S1" )).build();
writeModule(mlib, m1);
writeIncubatingModule(mlib, m2);
// boot layer: root=m1, incubator module m2 should not be resolved
testBootLayer(mlib, Set.of("m1" ), Set.of("m1" ), Set.of("m2" ))
.shouldNotMatch("WARNING:.*m2" );
// custom configuration: root=m1, incubator module m2 should be resolved
testCustomConfiguration(mlib, Set.of("m1" ), Set.of("m2" ));
}
/**
* module m1 uses p . S
* ( incubating ) module m2 requires m1 provides P . S uses q . S
* ( incubating ) module m3 requires m2 provides q . S
*/
public void test2() throws Exception {
Path mlib = Files.createTempDirectory("mlib" );
var m1 = newModule("m1" ).exports("p" ).uses("p.S" ).build();
var m2 = newModule("m2" )
.requires("m1" )
.provides("p.S" , List.of("impl.S1" ))
.exports("q" )
.uses("q.S" )
.build();
var m3 = newModule("m3" ).requires("m2" ).provides("q.S" , List.of("impl.S1" )).build();
writeModule(mlib, m1);
writeIncubatingModule(mlib, m2);
writeIncubatingModule(mlib, m3);
// boot layer: root=m1, incubator modules m2 and m3 should not be resolved
testBootLayer(mlib, Set.of("m1" ), Set.of("m1" ), Set.of("m2" , "m3" ))
.shouldNotMatch("WARNING:.*m2" )
.shouldNotMatch("WARNING:.*m3" );
// boot layer: root=m2, incubator module m3 should not be resolved
testBootLayer(mlib, Set.of("m2" ), Set.of("m1" , "m2" ), Set.of("m3" ))
.shouldMatch("WARNING:.*m2" )
.shouldNotMatch("WARNING:.*m3" );
// custom configuration: root=m1, incubator modules m2 and m3 should be resolved
testCustomConfiguration(mlib, Set.of("m1" ), Set.of("m1" , "m2" , "m3" ));
// custom configuration: root=m2, incubator module m3 should be resolved
testCustomConfiguration(mlib, Set.of("m2" ), Set.of("m1" , "m2" , "m3" ));
}
/**
* Creates an exploded module on the file system .
*
* @ param mlib the top - level module directory
* @ param descriptor the module descriptor of the module to write
*/
void writeModule(Path mlib, ModuleDescriptor descriptor) throws Exception {
writeModule(mlib, descriptor, false );
}
/**
* Creates an exploded module on the file system . The module will be an
* incubating module .
*
* @ param mlib the top - level module directory
* @ param descriptor the module descriptor of the module to write
*/
void writeIncubatingModule(Path mlib, ModuleDescriptor descriptor) throws Exception {
writeModule(mlib, descriptor, true );
}
/**
* Creates an exploded module on the file system .
*
* @ param mlib the top - level module directory
* @ param descriptor the module descriptor of the module to write
* @ param incubating to create an incubating module
*/
void writeModule(Path mlib, ModuleDescriptor descriptor, boolean incubating)
throws Exception
{
// create ModuleResolution attribute if incubating module
ModuleResolution mres = (incubating) ? ModuleResolution.empty().withIncubating() : null ;
String name = descriptor.name();
// create directory for module
Path dir = Files.createDirectory(mlib.resolve(name));
// module-info.class
try (OutputStream out = Files.newOutputStream(dir.resolve("module-info.class" ))) {
ModuleInfoWriter.write(descriptor, mres, out);
}
// create a dummy class file for each package
for (String pn : descriptor.packages()) {
Path subdir = dir.resolve(pn.replace('.' , File.separatorChar));
Files.createDirectories(subdir);
Files.createFile(subdir.resolve("C.class" ));
}
}
/**
* Run TestBootLayer in a child VM with the given module path and the
* - - add - modules option with additional root modules . TestBootLayer checks
* the modules in the boot layer .
*
* @ param mlib the module path
* @ param roots the modules to specify to - - add - modules
* @ param expected the names of modules that should be in the boot layer
* @ param notExpected the names of modules that should not be in boot layer
*/
OutputAnalyzer testBootLayer(Path mlib,
Set<String> roots,
Set<String> expected,
Set<String> notExpected)
throws Exception
{
var opts = Stream.of("-p" , mlib.toString(),
"--add-modules" , commaSeparated(roots),
"TestBootLayer" , commaSeparated(expected), commaSeparated(notExpected));
return ProcessTools.executeTestJava(opts.toArray(String[]::new ))
.outputTo(System.out)
.errorTo(System.out)
.shouldHaveExitValue(0 );
}
/**
* Creates a Configuration by resolving a set of root modules , with service
* binding , then checks that the Configuration includes the expected modules .
*
* @ param mlib the module path
* @ param roots the names of the root modules
* @ param expected the names of modules that should be in the configuration
*/
void testCustomConfiguration(Path mlib, Set<String> roots, Set<String> expected) {
ModuleFinder finder = ModuleFinder.of(mlib);
Configuration cf = ModuleLayer.boot()
.configuration()
.resolveAndBind(finder, ModuleFinder.of(), roots);
Set<String> modules = cf.modules().stream()
.map(ResolvedModule::name)
.collect(Collectors.toSet());
expected.stream()
.filter(mn -> !modules.contains(mn))
.findAny()
.ifPresent(mn -> {
throw new RuntimeException(mn + " not in configuration!!!" );
});
}
String commaSeparated(Set<String> s) {
return s.stream().collect(Collectors.joining("," ));
}
}
Messung V0.5 in Prozent C=90 H=92 G=90
¤ Dauer der Verarbeitung: 0.12 Sekunden
(vorverarbeitet am 2026-06-10)
¤
*© Formatika GbR, Deutschland