Secrets.java

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/*
 * Turró i Cutiller Foundation. License notice.
 * Copyright (C) 2015 Lluis Turró Cutiller <http://www.turro.org/>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
package org.turro.action;
 
import java.util.logging.Level;
import java.util.logging.Logger;
import org.turro.collections.parser.ParserException;
import org.turro.string.Strings;
import org.turro.annotation.Secret;
import org.turro.collections.KeyValueMap;
import org.turro.reflection.Instances;
 
public class Secrets {
 
  /* Secrets */
  
  public static String getSecret(String keys) {
    try {
      return Secrets.<String>getObject(new KeyValueMap(keys));
    } catch (ParserException ex) {
      Logger.getLogger(Secrets.class.getName()).log(Level.SEVERE, null, ex);
    }
    return null;
  }
 
  public static <T> T getObject(String keys) {
    try {
      return Secrets.<T>getObject(new KeyValueMap(keys));
    } catch (ParserException ex) {
      Logger.getLogger(Secrets.class.getName()).log(Level.SEVERE, null, ex);
    }
    return null;
  }
 
  public static <T> T getObject(KeyValueMap kvm) {
    for(ISecret iSecret : Instances.cached().byAnnotation(Secret.class, ISecret.class)) {
      T value = iSecret.<T>get(kvm);
      if(!isEmpty(value)) {
        return value;
      }
    }
    return null;
  }
 
  public static boolean isSecret(String key, Object value) {
    for(ISecret iSecret : Instances.cached().byAnnotation(Secret.class, ISecret.class)) {
      if(iSecret.is(key, value)) {
        return true;
      }
    }
    return false;
  }
 
  private static boolean isEmpty(Object value) {
    if(value instanceof String) {
      return Strings.isBlank((String) value);
    } else {
      return value == null;
    }
  }
  
  private Secrets() {
  }
 
}