/*
 * Copyright (c) 2001, 2018, 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 nsk.jdi.VirtualMachineManager.connectedVirtualMachines;

import nsk.share.*;
import nsk.share.jpda.*;
import nsk.share.jdi.*;

import com.sun.jdi.*;
import com.sun.jdi.connect.*;
import java.util.*;
import java.io.*;

import java.net.*;

import com.sun.jdi.event.*;
import com.sun.jdi.request.*;

/**
 * The test for the implementation of an object of the type     <BR>
 * VirtualMachineManager.                                       <BR>
 *                                                              <BR>
 * The test checks up that results of the method                <BR>
 * <code>com.sun.jdi.VirtualMachineManager.connectedVirtualMachines()</code> <BR>
 * complies with its specification.                             <BR>
 * <BR>
 * Test case includes only one debuggee.                        <BR>
 * The test checks up that :                                    <BR>
 * - after launching debugged Virtual Machine the tested method <BR>
 *   returns List containing one element of                     <BR>
 *   a VirtualMachine type which is equal to a mirror of        <BR>
 *   the debuggee already got after launching;                  <BR>
 * - after the deguggee normally ends via its exit() method,    <BR>
 *   the call to the method returns an empty List.              <BR>
 */

public class convm001 {

    //----------------------------------------------------- templete section
    static final int PASSED = 0;
    static final int FAILED = 2;
    static final int PASS_BASE = 95;

    //----------------------------------------------------- templete parameters
    static final String
    sHeader1 = "\n==> nsk/jdi/VirtualMachineManager/connectedVirtualMachines/convm001  ",
    sHeader2 = "--> debugger: ",
    sHeader3 = "##> debugger: ";

    //----------------------------------------------------- main method

    public static void main (String argv[]) {
        int result = run(argv, System.out);
        System.exit(result + PASS_BASE);
    }

    public static int run (String argv[], PrintStream out) {
        return new convm001().runThis(argv, out);
    }

    //--------------------------------------------------   log procedures

    private static Log  logHandler;

    private static void log1(String message) {
        logHandler.display(sHeader1 + message);
    }
    private static void log2(String message) {
        logHandler.display(sHeader2 + message);
    }
    private static void log3(String message) {
        logHandler.complain(sHeader3 + message);
    }

    //  ************************************************    test parameters

    private String debuggeeName =
        "nsk.jdi.VirtualMachineManager.connectedVirtualMachines.convm001a";

    //String mName = "nsk.jdi.VirtualMachineManager.connectedVirtualMachines";

    //====================================================== test program
    //------------------------------------------------------ common section

    static ArgumentHandler      argsHandler;

    static int waitTime;

    static VirtualMachine      vm            = null;

    static EventRequestManager eventRManager = null;
    static EventQueue          eventQueue    = null;
    static EventSet            eventSet      = null;

    static int  testExitCode = PASSED;

    static final int returnCode0 = 0;
    static final int returnCode1 = 1;
    static final int returnCode2 = 2;
    static final int returnCode3 = 3;
    static final int returnCode4 = 4;

    //------------------------------------------------------ methods

    private int runThis (String argv[], PrintStream out) {

        Debugee debuggee;

        argsHandler     = new ArgumentHandler(argv);
        logHandler      = new Log(out, argsHandler);
        Binder binder   = new Binder(argsHandler, logHandler);

        if (argsHandler.verbose()) {
            debuggee = binder.bindToDebugee(debuggeeName + " -vbs");
        } else {
            debuggee = binder.bindToDebugee(debuggeeName);
        }

        waitTime = argsHandler.getWaitTime();


        IOPipe pipe     = new IOPipe(debuggee);

        debuggee.redirectStderr(out);
        log2("issuspended002a debuggee launched");
        debuggee.resume();

        String line = pipe.readln();
        if ((line == null) || !line.equals("ready")) {
            log3("signal received is not 'ready' but: " + line);
            return FAILED;
        } else {
            log2("'ready' recieved");
        }

        vm = debuggee.VM();

    //------------------------------------------------------  testing section
        log1("      TESTING BEGINS");

        VirtualMachineManager vmm = null;

        List connectedVM;
        VirtualMachine vm1 = null;

        int size = 0;


        for (int i = 0; ; i++) {

            pipe.println("newcheck");
            line = pipe.readln();

            if (line.equals("checkend")) {
                log2("     : returned string is 'checkend'");
                break ;
            } else if (!line.equals("checkready")) {
                log3("ERROR: returned string is not 'checkready'");
                testExitCode = FAILED;
                break ;
            }

            log1("new checkready: #" + i);

            //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ variable part

            log2("......call to Bootstrap.virtualMachineManager()");

            vmm = Bootstrap.virtualMachineManager();
            if (vmm == null) {
                log3("ERROR: null returned");
                testExitCode = FAILED;
            } else {

                log2("......call to vmm.connectedVirtualMachines()");
                connectedVM = vmm.connectedVirtualMachines();

                size = connectedVM.size();
                if (size != 1) {
                    log3("ERROR: connectedVM.size() != 1 : " + size);
                    testExitCode = FAILED;
                } else {
                    log2("       connectedVM.size() == 1");
                    log2("......getting: VirtualMachine vm1 = connectedVM.get(0);");
                    vm1 = (VirtualMachine) connectedVM.get(0);

                    log2("......comparing: vm.equals(vm1)");
                    if (!vm.equals(vm1)) {
                        log3("ERROR: !vm.equals(vm1)");
                        testExitCode = FAILED;
                    }
                }
            }

            //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        }

        eventQueue = vm.eventQueue();
        eventSet = null;

    //--------------------------------------------------   test summary section
    //-------------------------------------------------    standard end section

        pipe.println("quit");
        log2("waiting for the debuggee to finish ...");
        debuggee.waitFor();

        int status = debuggee.getStatus();
        if (status != PASSED + PASS_BASE) {
            log3("debuggee returned UNEXPECTED exit status: " +
                    status + " != PASS_BASE");
            testExitCode = FAILED;
        } else {
            log2("debuggee returned expected exit status: " +
                    status + " == PASS_BASE");

            if (vmDisconnect() == 0 ) {
                log2("......connectedVM = vmm.connectedVirtualMachines();");
                connectedVM = vmm.connectedVirtualMachines();

                size = connectedVM.size();
                if (size != 0) {
                    log3("ERROR: connectedVM.size() != 0 : " + size);
                    testExitCode = FAILED;

                    log2("......since a returned list is not empty");
                    log2("......try to get first element and compare to the mirror of the vm tested");
                    try {
                        log2("        getting: vm1 = (VirtualMachine) connectedVM.get(0);");
                        vm1 = (VirtualMachine) connectedVM.get(0);

                        log2("         vm.name()== " + vm1.name());
                        if (vm.equals(vm1))
                            log2("vm.equals(vm1)");
                        else
                            log2("!vm.equals(vm1)");
                    } catch ( Exception e ) {
                        log2("......failure because of Exception:  " + e);
                    }

                } else
                    log2("       connectedVM.size() == 0");
            } else {
                log3("ERROR: threadDeath != 0");
                testExitCode = FAILED;
            }

        }

        if (testExitCode != PASSED) {
            logHandler.complain("TEST FAILED");
        }
        return testExitCode;
    }

    private int vmDisconnect () {

        int returnCode = returnCode0;

        log2("       waiting for VMDisconnectEvent");

        labelBP:
            for (;;) {

                log2("       new:  eventSet = eventQueue.remove();");
                try {
                    eventSet = eventQueue.remove(waitTime*60000);
                    if (eventSet == null) {
                        log3("ERROR:  timeout for waiting for a ThreadDeathEvent");
                        returnCode = returnCode3;
                        break labelBP;
                    }
                } catch ( Exception e ) {
                    log3("ERROR: Exception for  eventSet = eventQueue.remove(); : " + e);
                    returnCode = 1;
                    break labelBP;
                }

                if (eventSet != null) {

                    log2("     :  eventSet != null;  size == " + eventSet.size());

                    EventIterator eIter = eventSet.eventIterator();
                    Event         ev    = null;

                    for (; eIter.hasNext(); ) {

                        if (returnCode != returnCode0)
                            break;

                        ev = eIter.nextEvent();

                    ll: for (int ifor =0;  ; ifor++) {

                        try {
                          switch (ifor) {

                          case 0:  AccessWatchpointEvent awe = (AccessWatchpointEvent) ev;
                                   log2("      AccessWatchpointEvent removed");
                                   break ll;
                          case 1:  BreakpointEvent be = (BreakpointEvent) ev;
                                   log2("      BreakpointEvent removed");
                                   break ll;
                          case 2:  ClassPrepareEvent cpe = (ClassPrepareEvent) ev;
                                   log2("      ClassPreparEvent removed");
                                   break ll;
                          case 3:  ClassUnloadEvent cue = (ClassUnloadEvent) ev;
                                   log2("      ClassUnloadEvent removed");
                                   break ll;
                          case 4:  ExceptionEvent ee = (ExceptionEvent) ev;
                                   log2("      ExceptionEvent removed");
                                   break ll;
                          case 5:  MethodEntryEvent mene = (MethodEntryEvent) ev;
                                   log2("      MethodEntryEvent removed");
                                   break ll;
                          case 6:  MethodExitEvent mexe = (MethodExitEvent) ev;
                                   log2("      MethodExiEvent removed");
                                   break ll;
                          case 7:  ModificationWatchpointEvent mwe = (ModificationWatchpointEvent) ev;
                                   log2("      ModificationWatchpointEvent removed");
                                   break ll;
                          case 8:  StepEvent se = (StepEvent) ev;
                                   log2("      StepEvent removed");
                                   break ll;
                          case 9:  ThreadDeathEvent tde = (ThreadDeathEvent) ev;
                                   log2("      ThreadDeathEvent removed");
                                   break ll;
                          case 10: ThreadStartEvent tse = (ThreadStartEvent) ev;
                                   log2("      ThreadStartEvent removed");
                                   break ll;
                          case 11: VMDeathEvent vmde = (VMDeathEvent) ev;
                                   log2("      VMDeathEvent removed");
                                   break ll;
                          case 12: VMStartEvent vmse = (VMStartEvent) ev;
                                   log2("      VMStartEvent removed");
                                   break ll;
                          case 13: WatchpointEvent we = (WatchpointEvent) ev;
                                   log2("      WatchpointEvent removed");
                                   break ll;

                          case 14: VMDisconnectEvent wmde = (VMDisconnectEvent) ev;
                                   log2("      VMDisconnectEvent removed");
                                   break labelBP;

                          default: log3("ERROR:  default case for casting event");
                                   returnCode = returnCode3;
                                   break ll;
                          } // switch
                        } catch ( ClassCastException e ) {
                        }   // try
                    }       // ll: for (int ifor =0;  ; ifor++)
                }           // for (; ev.hasNext(); )
            }
        }
        if (returnCode == returnCode0)
            log2("     :  eventSet == null:  EventQueue is empty");

        return returnCode;
    }


}
