/*

 * Copyright (c) 2015, 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.

 */

package common;

import java.nio.file.Path;

import java.nio.file.Paths;

import jdk.test.lib.Platform;

/**

 * A tool, such as jstat, jmap, etc Specific tools are defined as subclasses

 * parameterized by their corresponding ToolResults subclasses

 */

public abstract class TmTool<T extends ToolResults> {

    private final Class<T> resultsClz;

    private final String cmdLine;

    public TmTool(Class<T> resultsClz, String toolName, String otherArgs) {

        this.resultsClz = resultsClz;

        this.cmdLine = adjustForTestJava(toolName) + " " + otherArgs;

    }

    /**

     * Runs the tool to completion and returns the results

     *

     * @return the tool results

     * @throws Exception if anything goes wrong

     */

    public T measure() throws Exception {

        ToolRunner runner = new ToolRunner(cmdLine);

        ToolResults rawResults = runner.runToCompletion();

        System.out.println("Process output: " + rawResults);

        return resultsClz.getDeclaredConstructor(ToolResults.class).newInstance(rawResults);

    }

    private String adjustForTestJava(String toolName) {

        // We need to make sure we are running the tol from the JDK under testing

        String jdkPath = System.getProperty("test.jdk");

        if (jdkPath == null || !Paths.get(jdkPath).toFile().exists()) {

            throw new RuntimeException("property test.jdk not not set");

        }

        Path toolPath = Paths.get("bin", toolName + (Platform.isWindows() ? ".exe" : ""));

        return Paths.get(jdkPath, toolPath.toString()).toString();

    }

}