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/*
* Copyright 2013 EMC Corporation. 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.
* A copy of the License is located at
*
* http://www.apache.org/licenses/LICENSE-2.0.txt
*
* or in the "license" file accompanying this file. This file 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.emc.vipr.services.s3;
import com.amazonaws.AmazonClientException;
import com.amazonaws.AmazonServiceException;
import com.amazonaws.services.s3.model.ObjectMetadata;
import com.amazonaws.services.s3.model.Permission;
import com.emc.vipr.services.s3.model.*;
import java.io.File;
import java.io.InputStream;
/**
* This interface contains the ViPR extensions above and beyond standard S3
* functionality. This includes object update, object append, and file access
* (e.g. NFS).
*/
public interface ViPRS3 {
/**
* Updates an existing object. The given file will be overlaid on the
* existing object starting at startOffset.
*
* @param bucketName
* The name of an existing bucket, to which you have
* {@link Permission#Write} permission.
* @param key
* The key in the bucket to update.
* @param file
* The file containing the data to use for the update.
* @param startOffset
* The starting offset within the object to apply the update.
* @return A {@link UpdateObjectResult} containing the data returned from
* ViPR.
* @throws AmazonClientException
* If any errors are encountered in the client while making the
* request or handling the response.
* @throws AmazonServiceException
* If any errors occurred in on the server while processing the
* request.
*/
public UpdateObjectResult updateObject(String bucketName, String key,
File file, long startOffset) throws AmazonClientException;
/**
* Updates an existing object. The given stream will be overlaid on the
* existing object starting at startOffset.
*
* @param bucketName
* The name of an existing bucket, to which you have
* {@link Permission#Write} permission.
* @param key
* The key in the bucket to update.
* @param input
* The input stream containing the data to be uploaded.
* @param metadata
* Additional metadata for the upload. Generally, the most
* important property here is the Content-Length of the input
* stream. If you do not size the input stream, the client will
* be forced to buffer the entire stream into memory and size it
* before uploading. This can lead to {@link OutOfMemoryError}s.
* @param startOffset
* The starting offset within the object to apply the update.
* @return A {@link UpdateObjectResult} containing the data returned from
* ViPR.
* @throws AmazonClientException
* If any errors are encountered in the client while making the
* request or handling the response.
* @throws AmazonServiceException
* If any errors occurred in on the server while processing the
* request.
*/
public UpdateObjectResult updateObject(String bucketName, String key,
InputStream input, ObjectMetadata metadata, long startOffset)
throws AmazonClientException;
/**
* Updates an existing object. The given data will be overlaid on the
* existing object starting at startOffset.
*
* @param request
* The configured {@link UpdateObjectRequest} to execute.
* @return A {@link UpdateObjectResult} containing the data returned from
* ViPR.
* @throws AmazonClientException
* If any errors are encountered in the client while making the
* request or handling the response.
* @throws AmazonServiceException
* If any errors occurred in on the server while processing the
* request.
*/
public UpdateObjectResult updateObject(UpdateObjectRequest request)
throws AmazonClientException;
/**
* Appends to an existing object. The given file will be appended to the end
* of the object. Note that multiple append requests may be executed
* concurrently and will be executed serially. Therefore, you must check the
* actual append offset in the response, see
* {@link AppendObjectResult#getAppendOffset()}. If you must append at an
* exact location, use updateObject but note in that case with concurrent
* writes, the last writer will "win".
*
* @param bucketName
* The name of an existing bucket, to which you have
* {@link Permission#Write} permission.
* @param key
* The key in the bucket to append to.
* @param file
* The file containing the data to use for the append.
* @return A {@link AppendObjectResult} containing the data returned from
* ViPR including the actual append offset.
* @throws AmazonClientException
* If any errors are encountered in the client while making the
* request or handling the response.
* @throws AmazonServiceException
* If any errors occurred in on the server while processing the
* request.
*/
public AppendObjectResult appendObject(String bucketName, String key,
File file) throws AmazonClientException;
/**
* Appends to an existing object. The given stream will be appended to the
* end of the object. Note that multiple append requests may be executed
* concurrently and will be executed serially. Therefore, you must check the
* actual append offset in the response, see
* {@link AppendObjectResult#getAppendOffset()}. If you must append at an
* exact location, use updateObject but note in that case with concurrent
* writes, the last writer will "win".
*
* @param bucketName
* The name of an existing bucket, to which you have
* {@link Permission#Write} permission.
* @param key
* The key in the bucket to append to.
* @param input
* The input stream containing the data to be appended.
* @param metadata
* Additional metadata for the upload. Generally, the most
* important property here is the Content-Length of the input
* stream. If you do not size the input stream, the client will
* be forced to buffer the entire stream into memory and size it
* before sending. This can lead to {@link OutOfMemoryError}s.
* @return A {@link AppendObjectResult} containing the data returned from
* ViPR including the actual append offset.
* @throws AmazonClientException
* If any errors are encountered in the client while making the
* request or handling the response.
* @throws AmazonServiceException
* If any errors occurred in on the server while processing the
* request.
*/
public AppendObjectResult appendObject(String bucketName, String key,
InputStream input, ObjectMetadata metadata)
throws AmazonClientException;
/**
* Appends to an existing object. The given data will be appended to the end
* of the object. Note that multiple append requests may be executed
* concurrently and will be executed serially. Therefore, you must check the
* actual append offset in the response, see
* {@link AppendObjectResult#getAppendOffset()}. If you must append at an
* exact location, use updateObject but note in that case with concurrent
* writes, the last writer will "win".
*
* @param request
* the configured {@link AppendObjectRequest} to execute.
* @return A {@link AppendObjectResult} containing the data returned from
* ViPR including the actual append offset.
* @throws AmazonClientException
* If any errors are encountered in the client while making the
* request or handling the response.
* @throws AmazonServiceException
* If any errors occurred in on the server while processing the
* request.
*/
public AppendObjectResult appendObject(AppendObjectRequest request)
throws AmazonClientException;
/**
* Initiates a set file access mode request on a bucket.
*
* @param request
* The configured {@link SetBucketFileAccessModeRequest} request
* to execute.
* @return A {@link com.emc.vipr.services.s3.model.BucketFileAccessModeResult}
* containing the results of the access mode change.
* @throws AmazonClientException
* If any errors are encountered in the client while making the
* request or handling the response.
* @throws AmazonServiceException
* If any errors occurred in on the server while processing the
* request. Generally, this will happen if the given transition
* is not valid.
*/
public BucketFileAccessModeResult setBucketFileAccessMode(
SetBucketFileAccessModeRequest request)
throws AmazonClientException;
/**
* Checks the current file access mode on a bucket.
*
* @param bucketName
* the name of the bucket to check.
* @return a {@link BucketFileAccessModeResult} object containing the
* current file access mode for the bucket.
* @throws AmazonClientException
* If any errors are encountered in the client while making the
* request or handling the response.
* @throws AmazonServiceException
* If any errors occurred in on the server while processing the
* request.
*/
public BucketFileAccessModeResult getBucketFileAccessMode(
String bucketName) throws AmazonClientException;
/**
* Gets file access information for the keys in a bucket. This includes the
* current state of the key and the location on the file server to access
* the object. Note that this request is paginated so be sure to check the
* results to see if there are more results with
* {@link GetFileAccessResult#isTruncated()}.
*
* @param request
* the configured {@link GetFileAccessRequest} request to
* execute.
* @return a {@link GetFileAccessResult} object containing the object file
* access information.
* @throws AmazonClientException
* If any errors are encountered in the client while making the
* request or handling the response.
* @throws AmazonServiceException
* If any errors occurred in on the server while processing the
* request.
*/
public GetFileAccessResult getFileAccess(GetFileAccessRequest request)
throws AmazonClientException;
/**
* Lists all active ViPR data services nodes (hosts) in the ViPR cluster. Useful for load balancing.
* @param request
* the configured {@link ListDataNodesRequest} request to
* execute.
* @return a {@link ListDataNodesResult} object containing the list of data services endpoints (hosts).
* @throws AmazonClientException
* If any errors are encountered in the client while making the
* request or handling the response.
* @throws AmazonServiceException
* If any errors occurred in on the server while processing the
* request.
*/
public ListDataNodesResult listDataNodes(ListDataNodesRequest request)
throws AmazonClientException;
}
