openecomp-be/lib/openecomp-tosca-converter-lib/openecomp-tosca-converter-core/src/main/java/org/openecomp/core/impl/ToscaConverterManagerImpl.java

   1 package org.openecomp.core.impl;
   2
   3 import org.openecomp.core.converter.ToscaConverter;
   4 import org.openecomp.core.converter.api.ToscaConverterManager;
   5 import org.openecomp.core.utilities.file.FileContentHandler;
   6 import org.openecomp.core.utilities.file.FileUtils;
   7 import org.openecomp.core.utilities.json.JsonUtil;
   8 import org.openecomp.sdc.logging.api.Logger;
   9 import org.openecomp.sdc.logging.api.LoggerFactory;
  10 import org.openecomp.sdc.tosca.datatypes.ToscaServiceModel;
  11
  12 import java.lang.reflect.Constructor;
  13 import java.util.ArrayList;
  14 import java.util.List;
  15 import java.util.Map;
  16
  17 public class ToscaConverterManagerImpl implements ToscaConverterManager {
  18
  19   private static final Logger LOGGER = LoggerFactory.getLogger(ToscaConverterManagerImpl.class.getName());
  20   private static List<ToscaConverter> toscaConverters;
  21   private static final String toscaConverterFileName = "ToscaConverters.json";
  22   private static final String TOSCA_CONVERTER_IMPL_FORMAT_ERROR = "Failed to construct TOSCA converter for '%s' implementation.";
  23
  24   static {
  25     toscaConverters = getConvertersList();
  26   }
  27
  28   @Override
  29   public ToscaServiceModel convert(String csarName, FileContentHandler fileContentHandler) {
  30     return null;
  31   }
  32
  33   private static List<ToscaConverter> getConvertersList(){
  34     List<ToscaConverter> toscaConvertersList = new ArrayList<>();
  35     Map<String, String> convertersMap = FileUtils.readViaInputStream(toscaConverterFileName,
  36             stream -> JsonUtil.json2Object(stream, Map.class));
  37     return getToscaConvertersList(toscaConvertersList, convertersMap);
  38   }
  39
  40   private static List<ToscaConverter> getToscaConvertersList(
  41       List<ToscaConverter> toscaConvertersList, Map<String, String> convertersMap) {
  42     for(String implClassName : convertersMap.values()){
  43       try{
  44         Class<?> clazz = Class.forName(implClassName);
  45         Constructor<?> constructor = clazz.getConstructor();
  46         toscaConvertersList.add((ToscaConverter) constructor.newInstance());
  47       }catch (Exception ex){
  48         LOGGER.debug(String.format(TOSCA_CONVERTER_IMPL_FORMAT_ERROR, implClassName), ex);
  49         continue;
  50       }
  51     }
  52     return toscaConvertersList;
  53   }
  54 }