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// Copyright 2014 The Bazel Authors. All rights reserved.
//
// Licensed 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 com.google.devtools.build.lib.vfs;
import com.google.devtools.build.lib.skyframe.serialization.DeserializationContext;
import com.google.devtools.build.lib.skyframe.serialization.ObjectCodec;
import com.google.devtools.build.lib.skyframe.serialization.SerializationContext;
import com.google.devtools.build.lib.skyframe.serialization.SerializationException;
import com.google.protobuf.CodedInputStream;
import com.google.protobuf.CodedOutputStream;
import java.io.IOException;
/**
* An IOException subclass that is thrown when a file system access is denied. The message is
* generally "Permission denied".
*/
public class FileAccessException extends IOException {
/**
* Constructs an <code>FileAccessException</code> with the specified detail
* message. The error message string <code>s</code> can later be
* retrieved by the <code>{@link java.lang.Throwable#getMessage}</code>
* method of class <code>java.lang.Throwable</code>.
*
* @param s the detail message.
*/
public FileAccessException(String s) {
super(s);
}
/**
* Codec for {@link FileAccessException}.
*
* <p>{@link com.google.devtools.build.lib.skyframe.serialization.AutoRegistry} blacklists the
* entire com.google.devtools.build.lib.vfs java package from having DynamicCodec support.
* Therefore, we need to provide our own codec for @link FileAccessException}.
*/
@SuppressWarnings("unused") // found by CLASSPATH-scanning magic
private static class Codec implements ObjectCodec<FileAccessException> {
@Override
public Class<? extends FileAccessException> getEncodedClass() {
return FileAccessException.class;
}
@Override
public void serialize(
SerializationContext context, FileAccessException fae, CodedOutputStream codedOut)
throws SerializationException, IOException {
context.serialize(fae.getMessage(), codedOut);
}
@Override
public FileAccessException deserialize(DeserializationContext context, CodedInputStream codedIn)
throws SerializationException, IOException {
String message = context.deserialize(codedIn);
return new FileAccessException(message);
}
}
}