feat: implemented support for Jdk distro and tags

src/main/java/dev/jbang/devkitman/Distro.java

@@ -0,0 +1,11 @@
+package dev.jbang.devkitman;
+
+public class Distro {
+	public final String name;
+	public final boolean isGraalVM;
+
+	public Distro(String name, boolean isGraalVM) {
+		this.name = name;
+		this.isGraalVM = isGraalVM;
+	}
+}

src/main/java/dev/jbang/devkitman/Jdk.java

@@ -1,6 +1,7 @@
 package dev.jbang.devkitman;
 
 import java.nio.file.Path;
+import java.util.Collections;
 import java.util.HashSet;
 import java.util.Objects;
 import java.util.Set;
@@ -43,6 +44,20 @@ public interface Jdk extends Comparable<Jdk> {
 	@NonNull
 	Path home();
 
+	/**
+	 * The JDK distribution name (e.g. "openjdk", "zulu", "temurin", etc.). Can be
+	 * <code>null</code> if the provider doesn't have or support a distribution
+	 * names
+	 */
+	String distro();
+
+	/**
+	 * Returns a set of tags that can be used to give additional information about
+	 * the JDK
+	 */
+	@NonNull
+	Set<String> tags();
+
 	/**
 	 * Returns the major version of the JDK
 	 */
@@ -78,21 +93,25 @@ class Default implements Jdk {
 		private final boolean fixedVersion;
 		@Nullable
 		private final Path home;
+		private final String distro;
 		@NonNull
-		private final Set<String> tags = new HashSet<>();
+		private final Set<String> tags;
 
 		Default(
 				@NonNull JdkProvider provider,
 				@NonNull String id,
 				@Nullable Path home,
 				@NonNull String version,
 				boolean fixedVersion,
-				@NonNull String... tags) {
+				String distro,
+				@NonNull Set<String> tags) {
 			this.provider = provider;
 			this.id = id;
 			this.version = version;
 			this.fixedVersion = fixedVersion;
 			this.home = home;
+			this.distro = distro;
+			this.tags = Collections.unmodifiableSet(new HashSet<>(tags));
 		}
 
 		@Override
@@ -128,6 +147,17 @@ public Path home() {
 			return home;
 		}
 
+		@Override
+		public String distro() {
+			return distro;
+		}
+
+		@Override
+		@NonNull
+		public Set<String> tags() {
+			return tags;
+		}
+
 		@Override
 		public int majorVersion() {
 			return JavaUtils.parseJavaVersion(version());
@@ -176,7 +206,7 @@ public int compareTo(Jdk o) {
 		@Override
 		public String toString() {
 			return majorVersion() + " (" + version + (isFixedVersion() ? " (fixed)" : " (dynamic)") + ", " + id + ", "
-					+ home + ")";
+					+ home + ", " + distro + ", " + tags + ")";
 		}
 	}
 

src/main/java/dev/jbang/devkitman/JdkInstaller.java

@@ -2,6 +2,7 @@
 
 import java.nio.file.Path;
 import java.util.List;
+import java.util.Set;
 
 import org.jspecify.annotations.NonNull;
 import org.jspecify.annotations.Nullable;
@@ -13,17 +14,33 @@
  */
 public interface JdkInstaller {
 
+	/**
+	 * This method returns a list of distributions that are supported by this
+	 * installer.
+	 *
+	 * @return List of distribution names
+	 */
+	@NonNull
+	default List<Distro> listDistros() {
+		throw new UnsupportedOperationException(
+				"Listing available distributions is not supported by " + getClass().getName());
+	}
+
 	/**
 	 * This method returns a set of JDKs that are available for installation.
 	 * Implementations might set the <code>home</code> field of the JDK objects if
 	 * the respective JDK is currently installed on the user's system, but only if
 	 * they can ensure that it's the exact same version, otherwise they should just
 	 * leave the field <code>null</code>.
 	 *
+	 * @param distros Comma separated list of distribution names to look for. Can be
+	 *                null to use a default selection defined by the installer. Use
+	 *                an empty string to list all.
+	 * @param tags    The tags to filter the JDKs by. Can be null to list all.
 	 * @return List of <code>Jdk</code> objects
 	 */
 	@NonNull
-	default List<Jdk> listAvailable() {
+	default List<Jdk> listAvailable(String distros, Set<String> tags) {
 		throw new UnsupportedOperationException(
 				"Listing available JDKs is not supported by " + getClass().getName());
 	}
@@ -43,7 +60,7 @@ default List<Jdk> listAvailable() {
 	 */
 	@Nullable
 	default Jdk getAvailableByIdOrToken(String idOrToken) {
-		return JdkManager.getJdkBy(listAvailable().stream(), Jdk.Predicates.id(idOrToken))
+		return JdkManager.getJdkBy(listAvailable(null, null).stream(), Jdk.Predicates.id(idOrToken))
 			.orElse(null);
 	}
 

src/main/java/dev/jbang/devkitman/JdkManager.java

@@ -527,9 +527,19 @@ private Optional<Jdk> prevAvailableJdk(int maxVersion) {
 			.max(Jdk::compareTo);
 	}
 
+	public Set<Distro> listAvailableDistros() {
+		return providers(JdkProvider.Predicates.canUpdate)
+			.flatMap(p -> p.listDistros().stream())
+			.collect(Collectors.toSet());
+	}
+
 	public List<Jdk> listAvailableJdks() {
+		return listAvailableJdks(null, null);
+	}
+
+	public List<Jdk> listAvailableJdks(String distros, Set<String> tags) {
 		return providers(JdkProvider.Predicates.canUpdate)
-			.flatMap(p -> p.listAvailable().stream())
+			.flatMap(p -> p.listAvailable(distros, tags).stream())
 			.collect(Collectors.toList());
 	}
 
@@ -563,7 +573,9 @@ public void setDefaultJdk(Jdk jdk) {
 						DefaultJdkProvider.Discovery.PROVIDER_ID,
 						jdk.home(),
 						jdk.version(),
-						false);
+						false,
+						jdk.distro(),
+						jdk.tags());
 				defaultProvider.install(newDefJdk);
 				LOGGER.log(Level.INFO, "Default JDK set to {0}", jdk);
 			}

src/main/java/dev/jbang/devkitman/JdkProvider.java

@@ -20,8 +20,13 @@
  */
 public interface JdkProvider {
 
-	default Jdk createJdk(@NonNull String id, @Nullable Path home, @NonNull String version, boolean fixedVersion) {
-		return new Jdk.Default(this, id, home, version, fixedVersion);
+	default Jdk createJdk(@NonNull String id,
+			@Nullable Path home,
+			@NonNull String version,
+			boolean fixedVersion,
+			String distro,
+			@NonNull Set<String> tags) {
+		return new Jdk.Default(this, id, home, version, fixedVersion, distro, tags);
 	}
 
 	@NonNull
@@ -134,17 +139,34 @@ default boolean canUpdate() {
 		return false;
 	}
 
+	/**
+	 * This method returns a list of distributions that are available for
+	 * installation. The list can be empty if the provider does not support
+	 * selecting distributions.
+	 *
+	 * @return List of distribution names
+	 */
+	@NonNull
+	default List<Distro> listDistros() {
+		throw new UnsupportedOperationException(
+				"Listing available distributions is not supported by " + getClass().getName());
+	}
+
 	/**
 	 * This method returns a set of JDKs that are available for installation.
 	 * Implementations might set the <code>home</code> field of the JDK objects if
 	 * the respective JDK is currently installed on the user's system, but only if
 	 * they can ensure that it's the exact same version, otherwise they should just
 	 * leave the field <code>null</code>.
 	 *
+	 * @param distros Comma separated list of distribution names to look for. Can be
+	 *                null to use a default selection defined by the installer. Use
+	 *                an empty string to list all.
+	 * @param tags    The tags to filter the JDKs by. Can be null to list all.
 	 * @return List of <code>Jdk</code> objects
 	 */
 	@NonNull
-	default List<Jdk> listAvailable() {
+	default List<Jdk> listAvailable(String distros, Set<String> tags) {
 		throw new UnsupportedOperationException(
 				"Listing available JDKs is not supported by " + getClass().getName());
 	}
@@ -164,7 +186,7 @@ default List<Jdk> listAvailable() {
 	 */
 	@Nullable
 	default Jdk getAvailableByIdOrToken(String idOrToken) {
-		return JdkManager.getJdkBy(listAvailable().stream(), Jdk.Predicates.id(idOrToken))
+		return JdkManager.getJdkBy(listAvailable(null, null).stream(), Jdk.Predicates.id(idOrToken))
 			.orElse(null);
 	}