alluxio-master-2.x/shell/src/main/java/alluxio/cli/bundler/command/CollectConfigCommand.java
/*
 * The Alluxio Open Foundation licenses this work under the Apache License, version 2.0
 * (the "License"). You may not use this work except in compliance with the License, which is
 * available at www.apache.org/licenses/LICENSE-2.0
 *
 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
 * either express or implied, as more fully set forth in the License.
 *
 * See the NOTICE file distributed with this work for information regarding copyright ownership.
 */

package alluxio.cli.bundler.command;

import alluxio.Constants;
import alluxio.client.file.FileSystemContext;
import alluxio.conf.PropertyKey;
import alluxio.exception.AlluxioException;
import alluxio.util.CommonUtils;

import com.google.common.collect.ImmutableSet;
import org.apache.commons.cli.CommandLine;
import org.apache.commons.io.FileUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.File;
import java.io.IOException;
import java.util.List;
import java.util.Set;

/**
 * Command to collect Alluxio config files.
 * */
public class CollectConfigCommand extends AbstractCollectInfoCommand {
  public static final String COMMAND_NAME = "collectConfig";
  private static final Logger LOG = LoggerFactory.getLogger(CollectConfigCommand.class);

  private static final Set<String> EXCLUDED_FILE_PREFIXES = ImmutableSet.of(
          Constants.SITE_PROPERTIES);

  /**
   * Creates a new instance of {@link CollectConfigCommand}.
   *
   * @param fsContext the {@link FileSystemContext} to execute in
   * */
  public CollectConfigCommand(FileSystemContext fsContext) {
    super(fsContext);
  }

  @Override
  public String getCommandName() {
    return COMMAND_NAME;
  }

  @Override
  public int run(CommandLine cl) throws AlluxioException, IOException {
    mWorkingDirPath = getWorkingDirectory(cl);
    String confDirPath = mFsContext.getClusterConf().getString(PropertyKey.CONF_DIR);

    File confDir = new File(confDirPath);
    List<File> allFiles = CommonUtils.recursiveListLocalDir(confDir);
    for (File f : allFiles) {
      String filename = f.getName();
      String relativePath = confDir.toURI().relativize(f.toURI()).getPath();
      // Ignore file prefixes to exclude
      if (EXCLUDED_FILE_PREFIXES.stream().anyMatch(filename::startsWith)) {
        continue;
      }
      File targetFile = new File(mWorkingDirPath, relativePath);
      FileUtils.copyFile(f, targetFile, true);
    }

    return 0;
  }

  @Override
  public String getUsage() {
    return "collectConfig <outputPath>";
  }

  @Override
  public String getDescription() {
    return "Collect Alluxio configurations files";
  }
}
