SystemPropertiesManager.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.config;

import java.util.ArrayList;
import java.util.Enumeration;
import java.util.Properties;

import org.slf4j.Logger;
import org.openspcoop2.core.config.SystemProperties;
import org.openspcoop2.core.config.Property;
import org.openspcoop2.core.config.driver.DriverConfigurazioneException;

/**
 * SystemPropertiesManager
 *
 *
 * @author Poli Andrea (apoli@link.it)
 * @author $Author$
 * @version $Rev$, $Date$
 */
public class SystemPropertiesManager {

    public static final String SYSTEM_PROPERTIES = "OpenSPCoop2SystemProperties";
    
    private ConfigurazionePdDManager configPdDManager;
    private Logger log;
    
    private void logInfo(String msg) {
        if(this.log!=null) {
            this.log.info(msg);
        }
    }
    
    public SystemPropertiesManager(ConfigurazionePdDManager configPdDManager,Logger log){
        this.configPdDManager = configPdDManager;
        this.log = log;
    }

    private String getPrefixKey(String key) {
        return "Property["+key+"] ";
    }
    
    public void updateSystemProperties() throws DriverConfigurazioneException{
        
        // remove old properties
        String oldProperties = System.getProperty(SYSTEM_PROPERTIES);
        if(oldProperties!=null && oldProperties.length()>0){
            this.logInfo("Remove old properties: ["+oldProperties+"]");
            String [] names = oldProperties.split(",");
            for (int i = 0; i < names.length; i++) {
                this.logInfo("RemoveProperty ["+names[i]+"]");
                System.clearProperty(names[i]);
            }
        }
        System.clearProperty(SYSTEM_PROPERTIES);
        
        SystemProperties sps = this.configPdDManager.getSystemPropertiesPdD();
        if(sps!=null && sps.sizeSystemPropertyList()>0){
                        
            // set new propertis
            StringBuilder bf = new StringBuilder();
            for (int i = 0; i < sps.sizeSystemPropertyList(); i++) {
                Property sp = sps.getSystemProperty(i);
                String nome = sp.getNome();
                String valore = sp.getValore();
                
                if(bf.length()>0){
                    bf.append(",");
                }
                bf.append(nome);
                this.logInfo("SetProperty ["+nome+"]=["+valore+"]");
                System.setProperty(nome, valore);
            }
            
            // Storico
            this.logInfo("SetStoricoProperty ["+SYSTEM_PROPERTIES+"]=["+bf.toString()+"]");
            System.setProperty(SYSTEM_PROPERTIES, bf.toString());
            
        }
        else{
            this.logInfo("Non sono state rilevate proprietà di sistema da impostare");
        }
        
    }
    
    
    public String getPropertyValue(String key){
        return System.getProperty(key);
    }
    
    public String readAllSystemProperties(String separator){
        return this.readAllSystemProperties(separator, false);
    }
    private String readAllSystemProperties(String separator,boolean onlyOpenSPCoop2){
        Properties p = System.getProperties();
        if(p!=null){
            
            StringBuilder bf = new StringBuilder();
            
            Enumeration<Object> keys = p.keys();
            java.util.ArrayList<String> listKeys = new ArrayList<>();
            while (keys.hasMoreElements()) {
                Object object = keys.nextElement();
                if(object instanceof String){
                    listKeys.add((String)object);
                }
            }
            java.util.Collections.sort(listKeys);
            
            addSystemProperties(p, listKeys, separator, onlyOpenSPCoop2, bf);
            
            return bf.toString();
            
        }else{
            return null;
        }
    }
    private void addSystemProperties(Properties p,java.util.ArrayList<String> listKeys,String separator,boolean onlyOpenSPCoop2,StringBuilder bf) {
        for (int i = 0; i < listKeys.size(); i++) {
            String key = listKeys.get(i);
            
            boolean isOpenSPCoop2SystemProperty = isOpenSPCoop2SystemProperty(key);
            if(!isOpenSPCoop2SystemProperty &&
                onlyOpenSPCoop2){
                continue;
            }
            
            if(bf.length()>0){
                bf.append(separator);
            }
            bf.append("["+key+"]=["+p.getProperty(key)+"]");
        }
    }
    private boolean isOpenSPCoop2SystemProperty(String key) {
        boolean isOpenSPCoop2SystemProperty = false;
        String oldProperties = System.getProperty(SYSTEM_PROPERTIES);
        if(oldProperties!=null && oldProperties.length()>0){
            String [] names = oldProperties.split(",");
            for (int j = 0; j < names.length; j++) {
                if(key.equals(names[j])){
                    isOpenSPCoop2SystemProperty = true;
                    break;
                }
            }
        }
        return isOpenSPCoop2SystemProperty;
    }
    
    public String readOpenSPCoop2SystemProperties(String separator){
        return this.readAllSystemProperties(separator, true);
    }

    public void removeProperty(String key) throws OpenSPCoop2ConfigurationException{
        if(!System.getProperties().containsKey(key)){
            throw new OpenSPCoop2ConfigurationException(getPrefixKey(key)+"not found");
        }
        System.clearProperty(key);
        String oldProperties = System.getProperty(SYSTEM_PROPERTIES);
        StringBuilder bf = new StringBuilder();
        if(oldProperties!=null && oldProperties.length()>0){
            String [] names = oldProperties.split(",");
            for (int j = 0; j < names.length; j++) {
                if(key.equals(names[j])){
                    continue;
                }
                if(bf.length()>0){
                    bf.append(",");
                }
                bf.append(names[j]);
            }
            System.clearProperty(SYSTEM_PROPERTIES);
            System.setProperty(SYSTEM_PROPERTIES, bf.toString());
        }
    }
    
    public void updateProperty(String key,String value) throws OpenSPCoop2ConfigurationException{
        if(!System.getProperties().containsKey(key)){
            throw new OpenSPCoop2ConfigurationException(getPrefixKey(key)+"not found");
        }
        System.clearProperty(key);
        System.setProperty(key,value);
    }
    
    public void insertProperty(String key,String value) throws OpenSPCoop2ConfigurationException{
        if(System.getProperties().containsKey(key)){
            throw new OpenSPCoop2ConfigurationException(getPrefixKey(key)+"already exists (actual value: "+System.getProperties().getProperty(key)+")");
        }
        System.setProperty(key,value);
        
        String props = System.getProperty(SYSTEM_PROPERTIES);
        if(props!=null && props.length()>0){
            props = props + "," + key;
        }
        else{
            props = key;
        }
        
        System.clearProperty(SYSTEM_PROPERTIES);
        System.setProperty(SYSTEM_PROPERTIES, props);
    }
}