experiments/evorobot/src/evorobotcomponent.cpp

/********************************************************************************
 *  FARSA Experiments Library                                                   *
 *  Copyright (C) 2007-2012                                                     *
 *  Gianluca Massera <emmegian@yahoo.it>                                        *
 *  Stefano Nolfi <stefano.nolfi@istc.cnr.it>                                   *
 *  Tomassino Ferrauto <tomassino.ferrauto@istc.cnr.it>                         *
 *                                                                              *
 *  This program is free software; you can redistribute it and/or modify        *
 *  it under the terms of the GNU General Public License as published by        *
 *  the Free Software Foundation; either version 2 of the License, or           *
 *  (at your option) any later version.                                         *
 *                                                                              *
 *  This program 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 for more details.                                *
 *                                                                              *
 *  You should have received a copy of the GNU General Public License           *
 *  along with this program; if not, write to the Free Software                 *
 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA  *
 ********************************************************************************/

#include "evorobotcomponent.h"
#include "evorobotviewer.h"
#include "abstracttest.h"
#include "tests.h"
#include "configurationhelper.h"
#include "logger.h"

namespace farsa {

class EvolveOperation : public ThreadOperation {
public:
    EvolveOperation( Evoga* ga, EvoRobotComponent* evorobot ) :
        ga(ga),
        evorobot(evorobot) { };
    virtual ~EvolveOperation() { };
    virtual void stop() {
        ga->stop();
    };
    virtual void run() {
        evorobot->setStatus( "In Evolution ..." );
        ga->getEvoRobotExperiment()->setActivityPhase( EvoRobotExperiment::INEVOLUTION );
        ga->evolveAllReplicas();
        QString message;
        if ( ga->isStopped() ) {
            message = "Evolution Stopped";
        } else {
            message = "Evolution Finished";
        }
        // reset the stopped status
        ga->resetStop();
        evorobot->onThreadOperationDone( message );
    };
private:
    Evoga* ga;
    EvoRobotComponent* evorobot;
};

class TestOperation : public ThreadOperation {
public:
    TestOperation( AbstractTest* test, Evoga* ga, EvoRobotComponent* evorobot ) :
        test(test),
        ga(ga),
        evorobot(evorobot) { };
    virtual ~TestOperation() { };
    virtual void stop() {
        ga->stop();
    };
    virtual void run() {
        evorobot->setStatus( QString("Running ")+test->menuText()+" ..." );
        test->runTest();
        QString message;
        if ( ga->isStopped() ) {
            message = "Test Stopped";
        } else {
            message = "Test Finished";
        }
        // reset the stopped status
        ga->resetStop();
        evorobot->onThreadOperationDone( message );
    };
private:
    AbstractTest* test;
    Evoga* ga;
    EvoRobotComponent* evorobot;
};

EvoRobotComponent::EvoRobotComponent() :
    Component(),
    ga(NULL),
    batchRunning(false),
    runningOperation(false),
    mutex() {
    gaThread = new WorkerThread( this );

    connect(gaThread, SIGNAL(exceptionDuringOperation(BaseException*)), this, SLOT(exceptionDuringOperation(BaseException*)), Qt::BlockingQueuedConnection);
}

EvoRobotComponent::~EvoRobotComponent() {
    gaThread->quit();
    delete gaThread;
    delete ga;
}

ComponentUI* EvoRobotComponent::getUIManager() {
    return new EvoRobotViewer( this );
}

void EvoRobotComponent::configure(farsa::ConfigurationParameters& params, QString prefix) {
    if ( ga ) {
        // delete the previous GA
        gaThread->quit();
        delete gaThread;
        delete ga;
    }
    batchRunning = ConfigurationHelper::getBool(params, "__INTERNAL__/BatchRunning", batchRunning);
    ga = params.getObjectFromGroup<Evoga>( prefix+"GA" );
    
    // Now we also instantiate all test classes. The configuration file should have subgroups
    // [TESTS:NN] where NN is a progressive number starting from zero.
    // Each group describe the test (in particular the group must have a type
    // parameter corresponding the the type of the Test to run).
    // The tests indicated by the following boolean flags are added by default if not present on
    // the configuration file
    bool testAllAdded = false;
    bool testIndividualAdded = false;
    bool testRandomAdded = false;
    bool testZeroAdded = false;
    // clear the old content of currentTestName, it will be configured later
    currentTestName = QString();
    QStringList testGroups = params.getGroupsWithPrefixList( prefix, "TEST:" );
    for( int i=0; i<testGroups.size(); i++ ) {
        if ( i==0 ) {
            //--- currentTestName is initially setted to contain the name of the first test specified by the user
            currentTestName = testGroups[i];
        }
        AbstractTest* test = params.getObjectFromGroup<AbstractTest>(prefix+testGroups[i]);
        test->setComponent( this );
        AvailableTestList::addTest( testGroups[i], test );
        /*
        if (dynamic_cast<TestAll *>(test) != NULL) {
            testAllAdded = true;
        } else */ if (dynamic_cast<TestIndividual *>(test) != NULL) {
            testIndividualAdded = true;
        } else if (dynamic_cast<TestRandom *>(test) != NULL) {
            testRandomAdded = true;
        } /* else if (dynamic_cast<TestZero *>(test) != NULL) {
            testZeroAdded = true;
        } */
    }
    /*
    if (!testAllAdded) {
        // TestAll is not present among tests configured by the user, adding it. We know for sure
        // TestAll doesn't need to be configured, so we don't
        AbstractTest* test = new TestAll();
        test->setComponent( this );
        AvailableTestList::addTest("TestAll", test);
    }
    */
    if (!testIndividualAdded) {
        // TestBest is not present among tests configured by the user, adding it. We know for sure
        // TestBest doesn't need to be configured, so we don't
        AbstractTest* test = new TestIndividual();
        test->setComponent( this );
        AvailableTestList::addTest("TestIndividual", test);
    }
    if (!testRandomAdded) {
        // TestRandom is not present among tests configured by the user, adding it. We know for sure
        // TestRnadom doesn't need to be configured, so we don't
        AbstractTest* test = new TestRandom();
        test->setComponent( this );
        AvailableTestList::addTest("TestRandom", test);
    }
    /*
    if(!testZeroAdded) {
        // TestZero is not present among tests configured by the user, adding it. We know for sure
        // TestZero doesn't need to be configured, so we don't
        AbstractTest* test = new TestZero();
        test->setComponent( this );
        AvailableTestList::addTest("TestZero", test);
    }
    */
    
    if ( currentTestName.isEmpty() ) {
        // there is no tests specified by the user and then the defaul currentTestName in this
        // case will be the automatically added "TestIndividual"
        currentTestName = "TestIndividual";
    }
    currentTestName = ConfigurationHelper::getString( params, prefix+"testToRun", currentTestName );

    // start the innerThread
    gaThread->start();
    
    setStatus( "Configured" );
}

void EvoRobotComponent::save(farsa::ConfigurationParameters& params, QString prefix) {
    ga->save( params, prefix+"/GA" );
}

void EvoRobotComponent::postConfigureInitialization() {
}

void EvoRobotComponent::describe( QString type ) {
    Descriptor d = addTypeDescription( type, "This component allow to do evolutionary robotics experiments" );
    d.describeSubgroup( "GA" ).type( "Evoga" ).props( IsMandatory ).help( "The Genetic Algorithm to use to perform the evolutionary process" );
    d.describeSubgroup( "TEST" ).type( "AbstractTest" ).props( AllowMultiple ).help( "let to configure a test condition for the evolved individual" );
}

Evoga* EvoRobotComponent::getGA() {
    return ga;
}

void EvoRobotComponent::stop() {
    gaThread->stopCurrentOperation();
}

void EvoRobotComponent::evolve()
{
    if ( batchRunning ) {
        ga->getEvoRobotExperiment()->setActivityPhase( EvoRobotExperiment::INEVOLUTION );
        ga->evolveAllReplicas();
        ga->resetStop();
    } else {
        mutex.lock();
        if ( runningOperation ) {
            mutex.unlock();
            Logger::error( "EvoRobotComponent - Cannot run evolve because another action is currently running; please wait until it finish, or stop it before run evolve action" );
            return;
        }
        runningOperation = true;
        mutex.unlock();
        gaThread->addOperation( new EvolveOperation( ga, this ) );
    }
}

void EvoRobotComponent::runTest() {
    AbstractTest* test = AvailableTestList::getTest( currentTestName );
    if ( !test ) {
        Logger::error( QString("EvoRobotComponent - Test ") + currentTestName + " is not present into the list of available Tests" );
        return;
    }
    if ( batchRunning ) {
        test->runTest();
        ga->resetStop();
    } else {
        mutex.lock();
        if ( runningOperation ) {
            mutex.unlock();
            Logger::error( QString("EvoRobotComponent - Cannot run test %1 because another action is currently running; please wait until it finish, or stop it before run test %1").arg(currentTestName) );
            return;
        }
        runningOperation = true;
        mutex.unlock();
        gaThread->addOperation( new TestOperation( test, ga, this ) );
    }
}

void EvoRobotComponent::runTestFromQAction() {
    // get the name of the test from the data into QAction
    QAction* action = dynamic_cast<QAction*>( sender() );
    if ( !action ) {
        Logger::error( "EvoRobotComponent - runTestFromQAction can only be called by a QAction" );
        return;
    }
    currentTestName = action->data().toString();
    runTest();
}

void EvoRobotComponent::exceptionDuringOperation(BaseException *e) {
    if (batchRunning) {
        return;
    }
    Logger::error( QString("EvoRobotComponent - Error while executing the current operation, an exception was thrown. Reason: ") + e->what() );
}

void EvoRobotComponent::onThreadOperationDone( QString message ) {
    mutex.lock();
    runningOperation = false;
    mutex.unlock();
    setStatus( message );
    emit actionFinished();
}

} // end namespace farsa