package fr.in2p3.jsaga;
   
   import fr.in2p3.jsaga.engine.config.ConfigurationException;
   
   import java.io.*;
   import java.net.MalformedURLException;
   import java.net.URL;
   import java.util.Properties;
   
  /* ***************************************************
  * *** Centre de Calcul de l'IN2P3 - Lyon (France) ***
  * ***             http://cc.in2p3.fr/             ***
  * ***************************************************
  * File:   EngineProperties
  * Author: Sylvain Reynaud (sreynaud@in2p3.fr)
  * Date:   11 mars 2008
  * ***************************************************
  * Description:                                      */
  /**
   *
   */
  public class EngineProperties {
      public static final String JSAGA_DEFAULT_CONTEXTS = "jsaga.default.contexts";
      public static final String JSAGA_TIMEOUT = "jsaga.timeout";
      public static final String LOG4J_CONFIGURATION = "log4j.configuration";
      public static final String JSAGA_DEFAULT_CONTEXTS_CHECK_CONFLICTS = "jsaga.default.contexts.check.conflicts";
      public static final String DATA_IMPLICIT_CLOSE_TIMEOUT = "data.implicit.close.timeout";
      public static final String DATA_COPY_BUFFER_SIZE = "data.copy.buffer.size";
      public static final String DATA_ATTRIBUTES_CACHE_LIFETIME = "data.attributes.cache.lifetime";
      public static final String JOB_MONITOR_POLL_PERIOD = "job.monitor.poll.period";
      public static final String JOB_MONITOR_ERROR_THRESHOLD = "job.monitor.error.threshold";
      public static final String JOB_CONTROL_CHECK_AVAILABILITY = "job.control.check.availability";
      public static final String JOB_CONTROL_CHECK_MATCH = "job.control.check.match";
      public static final String JOB_CANCEL_CHECK_STATUS = "job.cancel.check.status";
      public static final String JAVAX_NET_SSL_KEYSTORE = "javax.net.ssl.keyStore";
      public static final String JAVAX_NET_SSL_KEYSTOREPASSWORD = "javax.net.ssl.keyStorePassword";
      public static final String JAVAX_NET_SSL_TRUSTSTORE = "javax.net.ssl.trustStore";
      public static final String JAVAX_NET_SSL_TRUSTSTOREPASSWORD = "javax.net.ssl.trustStorePassword";
      
      private static Exception s_exception;
      private static Properties s_prop;
  
      public static Properties getProperties() {
          if (s_prop == null) {
              // set default properties
              s_prop = new Properties();
              //s_prop.setProperty(JSAGA_DEFAULT_CONTEXTS, "etc/jsaga-default-contexts.xml");
              //s_prop.setProperty(JSAGA_TIMEOUT, "etc/jsaga-timeout.properties");
              //s_prop.setProperty(LOG4J_CONFIGURATION, "etc/log4j.properties");
              s_prop.setProperty(JSAGA_DEFAULT_CONTEXTS_CHECK_CONFLICTS, "true");
              //s_prop.setProperty(DATA_IMPLICIT_CLOSE_TIMEOUT, "-1");
              s_prop.setProperty(DATA_COPY_BUFFER_SIZE, "1048576");
              s_prop.setProperty(DATA_ATTRIBUTES_CACHE_LIFETIME, "60000");
              s_prop.setProperty(JOB_MONITOR_POLL_PERIOD, "60000");
              s_prop.setProperty(JOB_MONITOR_ERROR_THRESHOLD, "3");
              s_prop.setProperty(JOB_CONTROL_CHECK_AVAILABILITY, "true");
              s_prop.setProperty(JOB_CONTROL_CHECK_MATCH, "false");
              s_prop.setProperty(JOB_CANCEL_CHECK_STATUS, "true");
  
              // load properties
              File file = new File(Base.JSAGA_HOME, "etc/jsaga-config.properties");
              try {
                  InputStream in = new FileInputStream(file);
                  s_prop.load(in);
                  in.close();
              } catch (IOException e) {
                  s_exception = e;
              }
          }
          return s_prop;
      }
  
      public static Exception getException() {
          return s_exception;
      }
  
      public static void setProperty(String name, String value) {
          getProperties().setProperty(name, value);
      }
  
      private static String getEngineProperty(String name) {
          String value = getProperties().getProperty(name);
          if (value != null) {
              return value;
          } else {
              return null;
          }
      }
  
      public static String getProperty(String name) {
          // try with system property
          String value = System.getProperty(name);
          if (value != null) {
              return value;
          } else {
              // try with engine property
              return EngineProperties.getEngineProperty(name);
          }
      }
 
     /**
      * Get the URL corresponding to property <code>name</code>.
      * The URL can be either a JAR resource (System properties only)
      * or a local file path (Engine properties only).
      * @param name the name of the property
      * @return the URL
      */
     public static URL getURL(String name) throws ConfigurationException {
         // try with system property
         String value = System.getProperty(name);
         if (value != null) {
             try {
                 return new URL(value);
             } catch (MalformedURLException e) {
                 throw new ConfigurationException("Malformed URL: "+value, e);
             }
         } else {
             // try with engine property
             String path = getProperties().getProperty(name);
             if (path != null) {
                 File file;
                 if (new File(path).isAbsolute()) {
                     file = new File(path);
                 } else {
                     file = new File(Base.JSAGA_HOME, path);
                 }
                 if (! file.exists()) {
                     throw new ConfigurationException("File not found: "+file);
                 }
                 try {
                     return file.toURL();
                 } catch (MalformedURLException e) {
                     throw new ConfigurationException("Malformed URL: "+file, e);
                 }
             } else {
                 return null;
             }
         }
     }
 
     public static Integer getInteger(String name) throws NumberFormatException {
         String value = getProperty(name);
         if (value != null) {
             return Integer.parseInt(value);
         } else {
             return null;
         }
     }
 
     public static Boolean getBoolean(String name) {
         String value = getProperty(name);
         if (value != null) {
             return "true".equalsIgnoreCase(value);
         } else {
             return null;
         }
     }
 }