Quelle RegistryVM.java Sprache: JAVA

/*
* Copyright (c) 2017, 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.
*/

import java.io.OutputStream;
import java.io.IOException;

/**
* Class to run and control registry/rmiregistry in a sub-process.
* The behaviour changes when use different runner, currently
* there are 2 built-in runners, RegistryRunner and RMIRegistryRunner.
*
* We can't kill a registry if we have too-close control
* over it.  We must make it in a subprocess, and then kill the
* subprocess when it has served our needs.
*/
public class RegistryVM extends JavaVM {

    private static final double START_TIMEOUT =
            20_000 * TestLibrary.getTimeoutFactor();
    private static final String DEFAULT_RUNNER = "RegistryRunner";

    private int port = -1;

    private RegistryVM(String runner, OutputStream out, OutputStream err,
                    String options, int port) {
        super(runner, options, Integer.toString(port), out, err);
        try {
            Class runnerClass = Class.forName(runner);
            if (!RegistryRunner.class.isAssignableFrom(runnerClass)) {
                throw new RuntimeException("runner class must be RegistryRunner"
                        + " or its sub class");
            }
        } catch (ClassNotFoundException ex) {
            throw new RuntimeException(ex);
        }
        this.port = port;
    }

    /**
     * Create a RegistryVM instance on an ephemeral port.
     *
     * @return a RegistryVM instance
     */
    public static RegistryVM createRegistryVM() {
        return createRegistryVMWithRunner(DEFAULT_RUNNER, System.out, System.err, "", 0);
    }

    /**
     * Create a RegistryVM instance on an ephemeral port with additional
     * command line options.
     *
     * @param options command line options
     * @return a RegistryVM instance
     */
    public static RegistryVM createRegistryVM(String options) {
        return createRegistryVMWithRunner(
                DEFAULT_RUNNER, System.out, System.err, options, 0);
    }

    /**
     * Create a RegistryVM instance on a specified port capturing stdout and
     * stderr with additional command line options.
     *
     * @param out the OutputStream where the normal output of the
     *            registry subprocess goes
     * @param err the OutputStream where the error output of the
     *            registry subprocess goes
     * @param options the command line options
     * @param port the port on which Registry accepts requests
     * @return a RegistryVM instance
     */
    public static RegistryVM createRegistryVM(OutputStream out, OutputStream err,
                                              String options, int port) {
        return createRegistryVMWithRunner(DEFAULT_RUNNER, out, err, options, port);
    }

    /**
     * Create a RegistryVM instance on an ephemeral port with additional
     * command line options and a specified runner.
     *
     * @param runner the runner class name
     * @param options command line options
     * @return a RegistryVM instance
     */
    public static RegistryVM createRegistryVMWithRunner(String runner, String options) {
        return createRegistryVMWithRunner(runner, System.out, System.err, options, 0);
    }

    /**
     * Create a RegistryVM instance on a specified port capturing stdout and
     * stderr with additional command line options and a specified runner.
     *
     * @param runner the runner class name
     * @param out the OutputStream where the normal output of the
     *            registry subprocess goes
     * @param err the OutputStream where the error output of the
     *            registry subprocess goes
     * @param options the command line options
     * @param port the port on which Registry accepts requests
     * @return a RegistryVM instance
     */
    public static RegistryVM createRegistryVMWithRunner(String runner, OutputStream out,
                                        OutputStream err, String options, int port) {
        options += " --add-exports=java.rmi/sun.rmi.registry=ALL-UNNAMED"
                + " --add-exports=java.rmi/sun.rmi.server=ALL-UNNAMED"
                + " --add-exports=java.rmi/sun.rmi.transport=ALL-UNNAMED"
                + " --add-exports=java.rmi/sun.rmi.transport.tcp=ALL-UNNAMED";
        RegistryVM reg = new RegistryVM(runner, out, err, options, port);
        reg.setPolicyFile(TestParams.defaultRegistryPolicy);
        return reg;
    }

    /**
     * Starts the registry in a sub-process and waits up to
     * the given timeout period to confirm that it's running,
     * and get the port where it's running.
     *
     * @throws IOException if fails to start subprocess
     */
    public void start() throws IOException {
        super.start();
        long startTime = System.currentTimeMillis();
        long deadline = TestLibrary.computeDeadline(startTime, (long)START_TIMEOUT);
        while (true) {
            try {
                Thread.sleep(1000);
            } catch (InterruptedException ignore) { }

            String output = outputStream.ba.toString();
            port = RegistryRunner.getRegistryPort(output);
            if (port != -1) {
                break;
            }
            try {
                int exit = vm.exitValue();
                TestLibrary.bomb("[RegistryVM] registry sub-process exited with status "
                        + exit + ".");
            } catch (IllegalThreadStateException ignore) { }

            if (System.currentTimeMillis() > deadline) {
                TestLibrary.bomb("Failed to start registry, giving up after " +
                    (System.currentTimeMillis() - startTime) + "ms.", null);
            }
        }
    }

    /**
     * Shuts down the registry.
     */
    @Override
    public void cleanup() {
        RegistryRunner.requestExit(port);
        super.destroy();
    }

    /**
     * Gets the port where the registry is serving.
     *
     * @return the port where the registry is serving
     */
    public int getPort() {
        return port;
    }
}

quality88%

¤ Dauer der Verarbeitung: 0.10 Sekunden (vorverarbeitet) ¤

Wurzel

Suchen

Beweissystem der NASA

Beweissystem Isabelle

NIST Cobol Testsuite

Cephes Mathematical Library

Wiener Entwicklungsmethode

Haftungshinweis

Die Informationen auf dieser Webseite wurden nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit, noch Qualität der bereit gestellten Informationen zugesichert.

Bemerkung:

Die farbliche Syntaxdarstellung ist noch experimentell.