Run jdeps to list dependencies

moditect · May 25, 2021 · 3de7ce0 · 3de7ce0
1 parent c206bde
commit 3de7ce0
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Showing 2 changed files with 59 additions and 7 deletions.
diff --git a/core/src/main/java/org/moditect/commands/GenerateModuleList.java b/core/src/main/java/org/moditect/commands/GenerateModuleList.java
@@ -16,22 +16,70 @@
 package org.moditect.commands;
 
 import org.moditect.model.Version;
+import org.moditect.spi.log.Log;
 
+import java.io.ByteArrayOutputStream;
+import java.io.File;
+import java.io.PrintStream;
 import java.nio.file.Path;
+import java.util.ArrayList;
+import java.util.List;
 import java.util.Set;
+import java.util.spi.ToolProvider;
+import java.util.stream.Collectors;
 
 public class GenerateModuleList {
 
-	private final Version jvmVersion;
+	private final Path projectJar;
 	private final Set<Path> dependencies;
+	private final Version jvmVersion;
+	private final Log log;
 
-	public GenerateModuleList(Version jvmVersion, Set<Path> dependencies) {
-		this.jvmVersion = jvmVersion;
+	private final ToolProvider jdeps;
+
+	public GenerateModuleList(Path projectJar, Set<Path> dependencies, Version jvmVersion, Log log) {
+		this.projectJar = projectJar;
 		this.dependencies = dependencies;
+		this.jvmVersion = jvmVersion;
+		this.log = log;
+
+		this.jdeps = ToolProvider
+				.findFirst( "jdeps" )
+				.orElseThrow(() -> new RuntimeException("jdeps tool not found"));
 	}
 
 	public void run() {
-		System.out.println("Creating module list for " + target + " and " + dependencies);
+		ByteArrayOutputStream outStream    = new ByteArrayOutputStream();
+		PrintStream out = new PrintStream(outStream);
+		jdeps.run(out , System.err, "--version");
+		out.close();
+		int jdepsVersion = Runtime.Version
+				.parse(outStream.toString().strip())
+				.feature();
+		if (jdepsVersion < 12) {
+			log.error("The jdeps option this plugin uses to list JDK modules only works flawlessly on JDK 12+, so please use that to run this goal.");
+			return;
+		}
+
+		List<String> command = new ArrayList<>();
+		command.add("--print-module-deps");
+		command.add("--ignore-missing-deps");
+		command.add("--multi-release");
+		command.add(String.valueOf(jvmVersion.feature()));
+		command.add("--class-path");
+		String classPath = dependencies.stream()
+				.map(Path::toAbsolutePath)
+				.map(Path::toString)
+				.collect(Collectors.joining(File.pathSeparator));
+		command.add(classPath);
+		command.add(projectJar.toAbsolutePath().toString());
+
+		log.debug( "Running jdeps " + String.join( " ", command ) );
+
+		int result = jdeps.run( System.out, System.err, command.toArray( new String[0] ) );
+		if (result != 0) {
+			throw new IllegalStateException("Invocation of jdeps failed: jdeps " + String.join(  " ", command ) );
+		}
 	}
 
 }
diff --git a/maven-plugin/src/main/java/org/moditect/mavenplugin/modulelist/GenerateModuleListMojo.java b/maven-plugin/src/main/java/org/moditect/mavenplugin/modulelist/GenerateModuleListMojo.java
@@ -17,16 +17,18 @@
 
 import org.apache.maven.plugin.AbstractMojo;
 import org.apache.maven.plugin.MojoExecutionException;
-import org.apache.maven.plugin.MojoFailureException;
 import org.apache.maven.plugins.annotations.LifecyclePhase;
 import org.apache.maven.plugins.annotations.Mojo;
 import org.apache.maven.plugins.annotations.Parameter;
 import org.apache.maven.plugins.annotations.ResolutionScope;
 import org.apache.maven.project.MavenProject;
 import org.moditect.commands.GenerateModuleList;
 import org.moditect.mavenplugin.util.DependencyHelper;
+import org.moditect.mavenplugin.util.MojoLog;
 import org.moditect.model.Version;
 
+import java.io.File;
+
 @Mojo(name = "list-application-image-modules",
 		defaultPhase = LifecyclePhase.PACKAGE,
 		requiresDependencyResolution = ResolutionScope.COMPILE_PLUS_RUNTIME
@@ -42,9 +44,11 @@ public class GenerateModuleListMojo extends AbstractMojo {
 	@Override
 	public void execute() throws MojoExecutionException {
 		GenerateModuleList generateModuleList = new GenerateModuleList(
+				new File(project.getBuild().getOutputDirectory()).toPath(),
+				// project.getArtifact().getFile().toPath(),
+				DependencyHelper.getDirectAndTransitiveDependencies(project),
 				determineJvmVersion(),
-				DependencyHelper.getDirectAndTransitiveDependencies(project)
-		);
+				new MojoLog(getLog()));
 		try {
 			generateModuleList.run();
 		} catch (RuntimeException ex) {