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The HuaweiCloud OBS Bundle SDK for Java used for accessing Object Storage Service, this SDK bundle
includes third-party libraries and relocated to different namespaces
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/**
* Copyright 2019 Huawei Technologies Co.,Ltd.
* 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.obs.services.model.fs;
import java.io.File;
import java.io.InputStream;
import com.obs.services.exception.ObsException;
import com.obs.services.model.StorageClassEnum;
/**
* Files in a bucket that supports the file interface
*
*/
public class ObsFSFile extends ObsFSFolder {
public ObsFSFile(String bucketName, String objectKey, String etag, String versionId, StorageClassEnum storageClass,
String objectUrl) {
super(bucketName, objectKey, etag, versionId, storageClass, objectUrl);
}
/**
* Obtains file properties.
*
* @return File properties
* @throws ObsException
* OBS SDK self-defined exception, thrown when the interface
* fails to be called or access to OBS fails
*/
@Override
public ObsFSAttribute attribute() throws ObsException {
return super.attribute();
}
/**
* Obtain the file content.
*
* @return Response to the request for obtaining file content
* @throws ObsException
* OBS SDK self-defined exception, thrown when the interface
* fails to be called or access to OBS fails
*/
public ReadFileResult read() throws ObsException {
this.checkInternalClient();
ReadFileRequest request = new ReadFileRequest(this.getBucketName(), this.getObjectKey());
return this.innerClient.readFile(request);
}
/**
* Obtain the file content.
*
* @param rangeStart
* Start position for reading file content
* @param rangeEnd
* End position for reading file content
* @return ObsException OBS SDK self-defined exception, thrown when the
* interface fails to be called or access to OBS fails
*/
public ReadFileResult read(long rangeStart, long rangeEnd) throws ObsException {
this.checkInternalClient();
ReadFileRequest request = new ReadFileRequest(this.getBucketName(), this.getObjectKey());
request.setRangeStart(rangeStart);
request.setRangeEnd(rangeEnd);
return this.innerClient.readFile(request);
}
/**
* Write data to a file.
*
* @param file
* Local path to the file
* @param position
* Start position for writing data to a file
* @return Files in the bucket that supports the file interface
* @throws ObsException
* OBS SDK self-defined exception, thrown when the interface
* fails to be called or access to OBS fails
*/
public ObsFSFile write(File file, long position) throws ObsException {
this.checkInternalClient();
WriteFileRequest request = new WriteFileRequest(this.getBucketName(), this.getObjectKey(), file, position);
return this.innerClient.writeFile(request);
}
/**
* Write data to a file.
*
* @param file
* Local path to the file
* @return Files in the bucket that supports the file interface
* @throws ObsException
* OBS SDK self-defined exception, thrown when the interface
* fails to be called or access to OBS fails
*/
public ObsFSFile write(File file) throws ObsException {
return this.write(file, 0);
}
/**
* Write data to a file.
*
* @param input
* Data stream to be uploaded
* @param position
* Start position for writing data to a file
* @return Files in the bucket that supports the file interface
* @throws ObsException
* OBS SDK self-defined exception, thrown when the interface
* fails to be called or access to OBS fails
*/
public ObsFSFile write(InputStream input, long position) throws ObsException {
this.checkInternalClient();
WriteFileRequest request = new WriteFileRequest(this.getBucketName(), this.getObjectKey(), input, position);
return this.innerClient.writeFile(request);
}
/**
* Append data to a file.
*
* @param file
* Local path to the file
* @return Files in the bucket that supports the file interface
* @throws ObsException
* OBS SDK self-defined exception, thrown when the interface
* fails to be called or access to OBS fails
*/
public ObsFSFile append(File file) throws ObsException {
this.checkInternalClient();
WriteFileRequest request = new WriteFileRequest(this.getBucketName(), this.getObjectKey(), file);
return this.innerClient.appendFile(request);
}
/**
* Append data to a file.
*
* @param input
* Data stream to be uploaded
* @return Files in the bucket that supports the file interface
* @throws ObsException
* OBS SDK self-defined exception, thrown when the interface
* fails to be called or access to OBS fails
*/
public ObsFSFile append(InputStream input) throws ObsException {
this.checkInternalClient();
WriteFileRequest request = new WriteFileRequest(this.getBucketName(), this.getObjectKey(), input);
return this.innerClient.appendFile(request);
}
/**
* Write data to a file.
*
* @param input
* Data stream to be uploaded
* @return Files in the bucket that supports the file interface
* @throws ObsException
* OBS SDK self-defined exception, thrown when the interface
* fails to be called or access to OBS fails
*/
public ObsFSFile write(InputStream input) throws ObsException {
return this.write(input, 0);
}
/**
* Rename a file.
*
* @param newName
* New file name
* @return Response to the request for renaming a file
* @throws ObsException
* OBS SDK self-defined exception, thrown when the interface
* fails to be called or access to OBS fails
*/
@Override
public RenameResult rename(String newName) throws ObsException {
this.checkInternalClient();
RenameRequest request = new RenameRequest(this.getBucketName(), this.getObjectKey(), newName);
return this.innerClient.renameFile(request);
}
/**
* Truncate a file.
*
* @param newLength
* File size after the truncation
* @return Response to the request for truncating a file
* @throws ObsException
* OBS SDK self-defined exception, thrown when the interface
* fails to be called or access to OBS fails
*/
public TruncateFileResult truncate(long newLength) throws ObsException {
this.checkInternalClient();
TruncateFileRequest request = new TruncateFileRequest(this.getBucketName(), this.getObjectKey(), newLength);
return this.innerClient.truncateFile(request);
}
/**
* Delete a file.
*
* @return Response to the request for deleting a file
* @throws ObsException
* OBS SDK self-defined exception, thrown when the interface
* fails to be called or access to OBS fails
*/
public DropFileResult drop() throws ObsException {
this.checkInternalClient();
DropFileRequest request = new DropFileRequest(this.getBucketName(), this.getObjectKey(), this.getVersionId());
return this.innerClient.dropFile(request);
}
}
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