package at.gv.egovernment.moa.spss.server.invoke;

import at.gv.egovernment.moa.logging.LoggingContext;
import at.gv.egovernment.moa.logging.LoggingContextManager;

import at.gv.egovernment.moa.spss.server.config.ConfigurationException;
import at.gv.egovernment.moa.spss.server.config.ConfigurationProvider;
import at.gv.egovernment.moa.spss.server.transaction.TransactionContext;
import at.gv.egovernment.moa.spss.server.transaction.TransactionContextManager;

/**
 * A utility class for setting up and tearing down thread-local context 
 * information needed for calling the <code>Invoker</code> classes.
 * 
 * @author Patrick Peck
 * @version $Id$
 */
public class ServiceContextUtils {
  
  /**
   * Set up the thread-local context information needed for calling the various 
   * <code>Invoker</code> classes.
   *  
   * @throws ConfigurationException An error occurred setting up the
   * configuration in the <code>TransactionContext</code>.
   */
  public static void setUpContexts() throws ConfigurationException {
    TransactionContextManager txMgr = TransactionContextManager.getInstance();
    LoggingContextManager logMgr = LoggingContextManager.getInstance();
    String transactionID = Thread.currentThread().getName();
    
    if (txMgr.getTransactionContext() == null) {
      TransactionContext ctx = new TransactionContext(transactionID, null, ConfigurationProvider.getInstance());
      txMgr.setTransactionContext(ctx);
    }
    
    if (logMgr.getLoggingContext() == null) {
      LoggingContext ctx = new LoggingContext(transactionID);
      logMgr.setLoggingContext(ctx);
    }
  }
  
  /**
   * Tear down thread-local context information.
   */
  public static void tearDownContexts() {
    TransactionContextManager.getInstance().setTransactionContext(null);
    LoggingContextManager.getInstance().setLoggingContext(null);
  }

}