LoadBalancerBehaviour.java

/*
 * GovWay - A customizable API Gateway
 * https://govway.org
 * 
 * Copyright (c) 2005-2025 Link.it srl (https://link.it). 
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 3, as published by
 * the Free Software Foundation.
 *
 * 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, see <http://www.gnu.org/licenses/>.
 *
 */
package org.openspcoop2.pdd.core.behaviour.built_in.load_balance;

import org.openspcoop2.core.config.PortaApplicativa;
import org.openspcoop2.core.config.PortaApplicativaServizioApplicativo;
import org.openspcoop2.core.config.constants.StatoFunzionalita;
import org.openspcoop2.core.id.IDServizioApplicativo;
import org.openspcoop2.core.id.IDSoggetto;
import org.openspcoop2.message.OpenSPCoop2Message;
import org.openspcoop2.pdd.core.CostantiPdD;
import org.openspcoop2.pdd.core.GestoreMessaggi;
import org.openspcoop2.pdd.core.behaviour.AbstractBehaviour;
import org.openspcoop2.pdd.core.behaviour.Behaviour;
import org.openspcoop2.pdd.core.behaviour.BehaviourEmitDiagnosticException;
import org.openspcoop2.pdd.core.behaviour.BehaviourException;
import org.openspcoop2.pdd.core.behaviour.BehaviourForwardTo;
import org.openspcoop2.pdd.core.behaviour.BehaviourForwardToFilter;
import org.openspcoop2.pdd.core.behaviour.BehaviourLoadBalancer;
import org.openspcoop2.pdd.core.behaviour.IBehaviour;
import org.openspcoop2.pdd.logger.OpenSPCoop2Logger;
import org.openspcoop2.protocol.sdk.Busta;
import org.openspcoop2.protocol.sdk.state.IState;
import org.openspcoop2.protocol.sdk.state.RequestInfo;

/**
 * LoadBalancerBehaviour
 *
 * @author Andrea Poli (apoli@link.it)
 * @author $Author$
 * @version $Rev$, $Date$
 */
public class LoadBalancerBehaviour extends AbstractBehaviour implements IBehaviour {

    private IState state;
    public LoadBalancerBehaviour(IState state) {
        this.state = state;
    }
    
    @Override
    public Behaviour behaviour(GestoreMessaggi gestoreMessaggioRichiesta, Busta busta,
            PortaApplicativa pa, RequestInfo requestInfo) throws BehaviourException,BehaviourEmitDiagnosticException {
        
        Behaviour behaviour = null;
        try{
            behaviour = new Behaviour();
            
            OpenSPCoop2Message msg = null;
            try {
                msg = gestoreMessaggioRichiesta.getMessage();
            }catch(Exception e) {
                throw new BehaviourException(e.getMessage(), e);
            }
            
            ConfigurazioneLoadBalancer config = ConfigurazioneLoadBalancer.read(pa, msg, busta, 
                    requestInfo, this.getPddContext(), 
                    this.msgDiag, OpenSPCoop2Logger.getLoggerOpenSPCoopCore(), this.state);
            if(config.getPool().isEmpty()) {
                throw new BehaviourException("Nessun connettore selezionabile");    
            }
            if(config.getConnectorSelected()==null || "".equals(config.getConnectorSelected())) {
                throw new BehaviourException("Nessun connettore selezionato");
            }
            
            String nomeConnettore = config.getConnectorSelected();
                    
            for (PortaApplicativaServizioApplicativo servizioApplicativo : pa.getServizioApplicativoList()) {
                if(servizioApplicativo.getDatiConnettore()==null || servizioApplicativo.getDatiConnettore().getStato()==null || 
                        StatoFunzionalita.ABILITATO.equals(servizioApplicativo.getDatiConnettore().getStato())) {
                    
                    String nomeConnettoreSA = org.openspcoop2.pdd.core.behaviour.built_in.Costanti.NOME_CONNETTORE_DEFAULT;
                    if(servizioApplicativo.getDatiConnettore()!=null && servizioApplicativo.getDatiConnettore().getNome()!=null) {
                        nomeConnettoreSA = servizioApplicativo.getDatiConnettore().getNome();
                    }
                    if(nomeConnettore.equals(nomeConnettoreSA)) {
                        
                        BehaviourForwardTo forwardTo = new BehaviourForwardTo();
                        BehaviourForwardToFilter filter = new BehaviourForwardToFilter();
                        forwardTo.setFilter(filter);
                        IDServizioApplicativo id = new IDServizioApplicativo();
                        id.setIdSoggettoProprietario(new IDSoggetto(busta.getTipoDestinatario(),busta.getDestinatario()));
                        id.setNome(servizioApplicativo.getNome());
                        filter.getAccessListServiziApplicativi().add(id);
                        behaviour.getForwardTo().add(forwardTo);
            
                        this.getPddContext().addObject(CostantiPdD.CONNETTORE_MULTIPLO_SELEZIONATO, servizioApplicativo.getNome());
                        
                        BehaviourLoadBalancer c = new BehaviourLoadBalancer();
                        c.setLoadBalancerPool(config.getPool());
                        c.setConnectorName(nomeConnettore);
                        behaviour.setLoadBalancer(c);
                        
                        break;
                        
                    }
                }
            }

        }
        catch(BehaviourEmitDiagnosticException e){
            throw e;
        }
        catch(BehaviourException e){
            throw e;
        }
        
        return behaviour;
    }

}