content: /**
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements. See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership. The ASF licenses this file
   * to you 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
   * <p>
   * http://www.apache.org/licenses/LICENSE-2.0
   * <p>
   * 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.apache.atlas.model.notification;
  
  import com.fasterxml.jackson.annotation.JsonAutoDetect;
  import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
  import com.fasterxml.jackson.annotation.JsonInclude;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import javax.xml.bind.annotation.XmlAccessType;
  import javax.xml.bind.annotation.XmlAccessorType;
  import javax.xml.bind.annotation.XmlRootElement;
  
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.InputStreamReader;
  import java.io.Serializable;
  import java.util.Properties;
  
  import static com.fasterxml.jackson.annotation.JsonAutoDetect.Visibility.NONE;
  import static com.fasterxml.jackson.annotation.JsonAutoDetect.Visibility.PUBLIC_ONLY;
  
  /**
   * Base class of hook information.
   */
  @JsonAutoDetect(getterVisibility = PUBLIC_ONLY, setterVisibility = PUBLIC_ONLY, fieldVisibility = NONE)
  @JsonInclude(JsonInclude.Include.NON_NULL)
  @JsonIgnoreProperties(ignoreUnknown = true)
  @XmlRootElement
  @XmlAccessorType(XmlAccessType.PROPERTY)
  public class MessageSource implements Serializable {
      private static final long serialVersionUID = 1L;
  
      private static final Logger LOG = LoggerFactory.getLogger(MessageSource.class);
  
      private static final String BUILDINFO_PROPERTIES       = "/atlas-buildinfo.properties";
      private static final String BUILD_VERSION_PROPERTY_KEY = "build.version";
      private static final String BUILD_VERSION_DEFAULT      = "UNKNOWN";
      private static final String storedVersion;
  
      private String name;
      private String version;
  
      public MessageSource() {
      }
  
      public MessageSource(String name) {
          this.version = storedVersion;
          this.name    = name;
      }
  
      public String getSource() {
          return name;
      }
  
      public void setSource(String name) {
          this.name = name;
      }
  
      public String getVersion() {
          return version;
      }
  
      private static String fetchBuildVersion() {
          Properties        properties        = new java.util.Properties();
          InputStream       inputStream       = MessageSource.class.getResourceAsStream(BUILDINFO_PROPERTIES);
          InputStreamReader inputStreamReader = new InputStreamReader(inputStream);
  
          try {
              properties.load(inputStreamReader);
          } catch (IOException e) {
              LOG.error("Failed to load atlas-buildinfo properties. Will use default version.", e);
          }
  
          return properties.getProperty(BUILD_VERSION_PROPERTY_KEY, BUILD_VERSION_DEFAULT);
      }
  
      static {
          storedVersion = fetchBuildVersion();
      }
  }
  