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The Apache Cassandra Project develops a highly scalable second-generation distributed database, bringing together Dynamo's fully distributed design and Bigtable's ColumnFamily-based data model.
/*
* 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.cassandra.io;
import java.io.IOError;
import java.nio.file.Path;
import org.apache.cassandra.io.util.File;
public abstract class FSError extends IOError
{
final String message;
public final String path;
public FSError(Throwable cause, File path)
{
this(null, cause, path);
}
public FSError(Throwable cause, Path path)
{
this(null, cause, path);
}
public FSError(String message, Throwable cause, File path)
{
super(cause);
this.message = message;
this.path = path.toString();
}
public FSError(String message, Throwable cause, Path path)
{
super(cause);
this.message = message;
this.path = path.toString();
}
/**
* Unwraps the Throwable cause chain looking for an FSError instance
* @param top the top-level Throwable to unwrap
* @return FSError if found any, null otherwise
*/
public static FSError findNested(Throwable top)
{
for (Throwable t = top; t != null; t = t.getCause())
{
if (t instanceof FSError)
return (FSError) t;
}
return null;
}
@Override
public String toString()
{
return getClass().getSimpleName() + (message != null ? ' ' + message : "") + (path != null ? " in " + path : "");
}
}