hadoop RegexMountPointInterceptor 源码
haddop RegexMountPointInterceptor 代码
文件路径：/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/viewfs/RegexMountPointInterceptor.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 java.io.IOException;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.fs.Path;
/**
* RegexMountPointInterceptor is a mechanism provided to intercept
* src and resolved path before/after resolution.
*/
@InterfaceAudience.LimitedPrivate("Common")
@InterfaceStability.Unstable
interface RegexMountPointInterceptor {
/**
* Initialize interceptor and throws IOException if needed.
* @throws IOException
*/
void initialize() throws IOException;
/**
* Intercept source before resolution.
* @param source
* @return
*/
String interceptSource(String source);
/**
* Intercept parsed dest path and return a new one.
* @return intercepted string
*/
String interceptResolvedDestPathStr(String parsedDestPathStr);
/**
* Intercept remaining path.
* @return intercepted string
*/
Path interceptRemainingPath(Path remainingPath);
/**
* Get interceptor type.
* @return
*/
RegexMountPointInterceptorType getType();
/**
* Serialize the interceptor to a string.
* @return
*/
String serializeToString();
}
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