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
   *
   *    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.apache.carbondata.core.constants;
  
  import java.io.InputStream;
  import java.util.Properties;
  
  import org.apache.carbondata.common.logging.LogServiceFactory;
  
  import org.apache.log4j.Logger;
  
  public final class CarbonVersionConstants {
  
    private static final Logger LOGGER =
        LogServiceFactory.getLogService(CarbonVersionConstants.class.getName());
    /**
     * the file name of CarbonData version info
     */
    private static final String CARBONDATA_VERSION_INFO_FILE =
        "carbondata-version-info.properties";
    /**
     * current CarbonData version
     */
    public static final String CARBONDATA_VERSION;
    /**
     * which branch current version build from
     */
    public static final String CARBONDATA_BRANCH;
    /**
     * the latest commit revision which current branch point to
     */
    public static final String CARBONDATA_REVISION;
    /**
     * the date of building current version
     */
    public static final String CARBONDATA_BUILD_DATE;
  
    static {
      // create input stream for CARBONDATA_VERSION_INFO_FILE
      InputStream resourceStream = Thread.currentThread().getContextClassLoader()
          .getResourceAsStream(CARBONDATA_VERSION_INFO_FILE);
      Properties props = new Properties();
      try {
        // read CARBONDATA_VERSION_INFO_FILE into props
        props.load(resourceStream);
      } catch (Exception e) {
        LOGGER.error("Error loading properties from " + CARBONDATA_VERSION_INFO_FILE, e);
      } finally {
        if (resourceStream != null) {
          try {
            resourceStream.close();
          } catch (Exception e) {
            LOGGER.error("Error closing CarbonData build info resource stream", e);
          }
        }
      }
      // set the values
      CARBONDATA_VERSION = props.getProperty("version");
      CARBONDATA_BRANCH = props.getProperty("branch");
      CARBONDATA_REVISION = props.getProperty("revision");
      CARBONDATA_BUILD_DATE = props.getProperty("date");
    }
  }
  