8150990: Add helper class in jdk.jlink for packager use to avoid coordination with FX and JDK builds

Reviewed-by: alanb, mchung, kcr, sundar

jdk/src/jdk.jlink/share/classes/jdk/tools/jlink/internal/packager/AppRuntimeImageBuilder.java

@@ -0,0 +1,146 @@
+/*
+ * Copyright (c) 2016, 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.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * 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.
+ */
+
+package jdk.tools.jlink.internal.packager;
+
+
+import jdk.tools.jlink.Jlink;
+import jdk.tools.jlink.builder.ImageBuilder;
+import jdk.tools.jlink.plugin.Plugin;
+import jdk.tools.jlink.builder.*;
+import jdk.tools.jlink.plugin.Pool;
+
+import java.io.ByteArrayOutputStream;
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.PrintWriter;
+import java.io.StringReader;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.EnumSet;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.LinkedHashMap;
+import java.util.LinkedHashSet;
+import java.util.List;
+import java.util.Map;
+import java.util.Properties;
+import java.util.ResourceBundle;
+import java.util.Set;
+import java.util.StringTokenizer;
+import java.util.TreeSet;
+import java.util.stream.Collectors;
+
+/**
+ * AppRuntimeImageBuilder is a private API used only by the Java Packager to generate
+ * a Java runtime image using jlink. AppRuntimeImageBuilder encapsulates the
+ * arguments that jlink requires to generate this image. To create the image call the
+ * build() method.
+ */
+public final class AppRuntimeImageBuilder {
+    private Path outputDir = null;
+    private List<Path> modulePath = null;
+    private Set<String> addModules = null;
+    private Set<String> limitModules = null;
+    private String excludeFileList = null;
+    private Map<String, String> userArguments = null;
+    private Boolean stripNativeCommands = null;
+
+    public AppRuntimeImageBuilder() {}
+
+    public void setOutputDir(Path value) {
+        outputDir = value;
+    }
+
+    public void setModulePath(List<Path> value) {
+        modulePath = value;
+    }
+
+    public void setAddModules(Set<String> value) {
+        addModules = value;
+    }
+
+    public void setLimitModules(Set<String> value) {
+        limitModules = value;
+    }
+
+    public void setExcludeFileList(String value) {
+        excludeFileList = value;
+    }
+
+    public void setStripNativeCommands(boolean value) {
+        stripNativeCommands = value;
+    }
+
+    public void setUserArguments(Map<String, String> value) {
+        userArguments = value;
+    }
+
+    public void build() throws IOException {
+        // jlink main arguments
+        Jlink.JlinkConfiguration jlinkConfig = new Jlink.JlinkConfiguration(
+            new File("").toPath(), // Unused
+            modulePath, addModules, limitModules);
+
+        // plugin configuration
+        List<Plugin> plugins = new ArrayList<Plugin>();
+
+        if (stripNativeCommands) {
+            plugins.add(Jlink.newPlugin(
+                        "strip-native-commands",
+                        Collections.singletonMap("strip-native-commands", "on"),
+                        null));
+        }
+
+        if (excludeFileList != null && !excludeFileList.isEmpty()) {
+            plugins.add(Jlink.newPlugin(
+                        "exclude-files",
+                        Collections.singletonMap("exclude-files", excludeFileList),
+                        null));
+        }
+
+        // add user supplied jlink arguments
+        for (Map.Entry<String, String> entry : userArguments.entrySet()) {
+            String key = entry.getKey();
+            String value = entry.getValue();
+            plugins.add(Jlink.newPlugin(key,
+                                        Collections.singletonMap(key, value),
+                                        null));
+        }
+
+        plugins.add(Jlink.newPlugin("installed-modules", Collections.emptyMap(), null));
+
+        // build the image
+        Jlink.PluginsConfiguration pluginConfig = new Jlink.PluginsConfiguration(
+            plugins, new DefaultImageBuilder(true, outputDir), null);
+        Jlink jlink = new Jlink();
+        jlink.build(jlinkConfig, pluginConfig);
+    }
+}