package org.kuali.common.devops.cache;
   
   import static org.apache.commons.io.FileUtils.touch;
   import static org.kuali.common.util.base.Exceptions.illegalState;
   
   import java.io.File;
   import java.io.IOException;
   import java.util.List;
   
  import org.kuali.common.http.model.HttpRequestResult;
  import org.kuali.common.http.model.HttpWaitResult;
  
  import com.fasterxml.jackson.annotation.JsonIgnore;
  import com.fasterxml.jackson.databind.ObjectMapper;
  import com.fasterxml.jackson.datatype.guava.GuavaModule;
  
  public class UrlFileCache extends PersistentCache<File, HttpWaitResult> {
  
  	private final ObjectMapper mapper = getObjectMapper();
  
  	@Override
  	public void store(File file, HttpWaitResult result) {
  		try {
  			touch(file);
  			mapper.writer().withDefaultPrettyPrinter().writeValue(file, result);
  		} catch (IOException e) {
  			throw illegalState(e);
  		}
  	}
  
  	@Override
  	public HttpWaitResult load(File file) {
  		try {
  			return mapper.readValue(file, HttpWaitResult.class);
  		} catch (IOException e) {
  			throw illegalState(e);
  		}
  	}
  
  	protected ObjectMapper getObjectMapper() {
  		ObjectMapper mapper = new ObjectMapper();
  		mapper.registerModule(new GuavaModule());
  		mapper.addMixInAnnotations(HttpWaitResult.class, MixIn.class);
  		return mapper;
  	}
  
  	private static final class MixIn {
  		@JsonIgnore
  		private List<HttpRequestResult> requestResults;
  
  	}
  
  }