hadoop OperationAuditor 源码
haddop OperationAuditor 代码
文件路径：/hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/audit/OperationAuditor.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
*
* 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.hadoop.fs.s3a.audit;
import java.io.IOException;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.permission.FsAction;
import org.apache.hadoop.fs.s3a.S3AFileStatus;
import org.apache.hadoop.fs.statistics.IOStatisticsSource;
import org.apache.hadoop.fs.store.audit.AuditSpanSource;
import org.apache.hadoop.service.Service;
/**
* Interfaces for audit services to implement.
*/
public interface OperationAuditor extends Service,
IOStatisticsSource, AuditSpanSource<AuditSpanS3A> {
/**
* Initialize.
* The base class will call {@link Service#init(Configuration)}.
* @param options options to initialize with.
*/
void init(OperationAuditorOptions options);
/**
* Get the unbonded span to use after deactivating an active
* span.
* @return a span.
*/
AuditSpanS3A getUnbondedSpan();
/**
* Check for permission to access a path.
* The path is fully qualified and the status is the
* status of the path.
* This is called from the {@code FileSystem.access()} command
* and is a soft permission check used by Hive.
* @param path path to check
* @param status status of the path.
* @param mode access mode.
* @return true if access is allowed.
* @throws IOException failure
*/
default boolean checkAccess(Path path, S3AFileStatus status, FsAction mode)
throws IOException {
return true;
}
/**
* Get the Auditor ID.
* @return ID
*/
String getAuditorId();
/**
* Span reference lost from GC operations.
* This is only called when an attempt is made to retrieve on
* the active thread or when a prune operation is cleaning up.
*
* @param threadId thread ID.
*/
default void noteSpanReferenceLost(long threadId) {
}
}
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