/**
 * ============LICENSE_START===================================================
 * SPARKY (AAI UI service)
 * ============================================================================
 * Copyright © 2017 AT&T Intellectual Property.
 * Copyright © 2017 Amdocs
 * All rights reserved.
 * ============================================================================
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * ============LICENSE_END=====================================================
 *
 * ECOMP and OpenECOMP are trademarks
 * and service marks of AT&T Intellectual Property.
 */

package org.openecomp.sparky.config.oxm;

import java.io.IOException;
import java.net.UnknownHostException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

import org.openecomp.sparky.util.NodeUtils;

import org.openecomp.cl.mdc.MdcContext;

/**
 * The Class OxmModelLoaderFilter.
 */
public class OxmModelLoaderFilter implements Filter {
  /* (non-Javadoc)
   * @see javax.servlet.Filter#doFilter(javax.servlet.ServletRequest, javax.servlet.ServletResponse, javax.servlet.FilterChain)
   */
  @Override
  public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
      throws IOException, ServletException {

    /*
     * However, we will setup the filtermap with a url that should never get it, so we shouldn't
     * ever be in here.
     */

    chain.doFilter(request, response);
  }

  /* (non-Javadoc)
   * @see javax.servlet.Filter#init(javax.servlet.FilterConfig)
   */
  @Override
  public void init(FilterConfig filterConfig) throws ServletException {
	String txnID = NodeUtils.getRandomTxnId();
	MdcContext.initialize(txnID, "OxmModelLoaderFilter", "",
	       "Init", "");

	try {
      OxmModelLoader.getInstance();
    } catch (Exception exc) {
      throw new ServletException("Caught an exception while initializing OXM model loader filter",
          exc);
    }

  }

  /* (non-Javadoc)
   * @see javax.servlet.Filter#destroy()
   */
  @Override
  public void destroy() {
    // TODO Auto-generated method stub

  }

}