Method findDataDir

solr/core/src/java/org/apache/solr/core/SolrCore.java:1472–1493

Locate the data directory for a given config and core descriptor. @param directoryFactory The directory factory to use if necessary to calculate an absolute path. Should be the same as what will be used to open the data directory later. @param dataDir An optional hint to the data directory loca

(
      DirectoryFactory directoryFactory,
      String dataDir,
      SolrConfig config,
      CoreDescriptor coreDescriptor)

   * @param directoryFactory The directory factory to use if necessary to calculate an absolute
   *     path. Should be the same as what will be used to open the data directory later.
   * @param dataDir An optional hint to the data directory location. Will be normalized and used if
   *     not null.
   * @param config A solr config to retrieve the default data directory location, if used.
   * @param coreDescriptor descriptor to load the actual data dir from, if not using the default.
   * @return a normalized data directory name
   * @throws SolrException if the data directory cannot be loaded from the core descriptor
   */
  static String findDataDir(
      DirectoryFactory directoryFactory,
      String dataDir,
      SolrConfig config,
      CoreDescriptor coreDescriptor) {
    if (dataDir == null) {
      if (coreDescriptor.usingDefaultDataDir()) {
        dataDir = config.getDataDir();
      }
      if (dataDir == null) {
        try {
          dataDir = coreDescriptor.getDataDir();
          if (!directoryFactory.isAbsolute(dataDir)) {
            dataDir = directoryFactory.getDataHome(coreDescriptor);
          }
        } catch (IOException e) {
          throw new SolrException(ErrorCode.SERVER_ERROR, e);
        }