hadoop RegexMountPointInterceptorFactory 源码

  • 2022-10-20
  • 浏览 (422)

haddop RegexMountPointInterceptorFactory 代码

文件路径:/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/viewfs/RegexMountPointInterceptorFactory.java

/**
 * 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.hadoop.fs.viewfs;

import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;

/**
 * The interceptor factory used to create RegexMountPoint interceptors.
 */
@InterfaceAudience.Private
@InterfaceStability.Unstable
final class RegexMountPointInterceptorFactory {

  private RegexMountPointInterceptorFactory() {

  }

  /**
   * interceptorSettingsString string should be like ${type}:${string},
   * e.g. replaceresolveddstpath:word1,word2.
   *
   * @param interceptorSettingsString
   * @return Return interceptor based on setting or null on bad/unknown config.
   */
  public static RegexMountPointInterceptor create(
      String interceptorSettingsString) {
    int typeTagIndex = interceptorSettingsString
        .indexOf(RegexMountPoint.INTERCEPTOR_INTERNAL_SEP);
    if (typeTagIndex == -1 || (typeTagIndex == (
        interceptorSettingsString.length() - 1))) {
      return null;
    }
    String typeTag = interceptorSettingsString.substring(0, typeTagIndex).trim()
        .toLowerCase();
    RegexMountPointInterceptorType interceptorType =
        RegexMountPointInterceptorType.get(typeTag);
    if (interceptorType == null) {
      return null;
    }
    switch (interceptorType) {
    case REPLACE_RESOLVED_DST_PATH:
      RegexMountPointInterceptor interceptor =
          RegexMountPointResolvedDstPathReplaceInterceptor
              .deserializeFromString(interceptorSettingsString);
      return interceptor;
    default:
      // impossible now
      return null;
    }
  }
}

相关信息

hadoop 源码目录

相关文章

hadoop ChRootedFileSystem 源码

hadoop ChRootedFs 源码

hadoop ConfigUtil 源码

hadoop Constants 源码

hadoop FsGetter 源码

hadoop HCFSMountTableConfigLoader 源码

hadoop InodeTree 源码

hadoop MountTableConfigLoader 源码

hadoop NflyFSystem 源码

hadoop NotInMountpointException 源码

0  赞