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/* 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.
 */

package org.camunda.connect.plugin.impl;

import java.util.ArrayList;
import java.util.List;

import org.camunda.bpm.engine.impl.bpmn.parser.BpmnParseListener;
import org.camunda.bpm.engine.impl.cfg.AbstractProcessEnginePlugin;
import org.camunda.bpm.engine.impl.cfg.ProcessEngineConfigurationImpl;
import org.camunda.bpm.engine.impl.util.ClassLoaderUtil;
import org.camunda.connect.Connectors;

public class ConnectProcessEnginePlugin extends AbstractProcessEnginePlugin {

  @Override
  public void preInit(ProcessEngineConfigurationImpl processEngineConfiguration) {
    // use classloader which loaded the plugin
    ClassLoader classloader = ClassLoaderUtil.getClassloader(ConnectProcessEnginePlugin.class);
    Connectors.loadConnectors(classloader);

    addConnectorParseListener(processEngineConfiguration);
  }

  private void addConnectorParseListener(ProcessEngineConfigurationImpl processEngineConfiguration) {
    List preParseListeners = processEngineConfiguration.getCustomPreBPMNParseListeners();
    if(preParseListeners == null) {
      preParseListeners = new ArrayList();
      processEngineConfiguration.setCustomPreBPMNParseListeners(preParseListeners);
    }
    preParseListeners.add(new ConnectorParseListener());
  }

}