minio/mint/build/aws-sdk-java/src/LimitedInputStream.java
Krishnan Parthasarathi c829e3a13b Support for remote tier management (#12090)
With this change, MinIO's ILM supports transitioning objects to a remote tier.
This change includes support for Azure Blob Storage, AWS S3 compatible object
storage incl. MinIO and Google Cloud Storage as remote tier storage backends.

Some new additions include:

 - Admin APIs remote tier configuration management

 - Simple journal to track remote objects to be 'collected'
   This is used by object API handlers which 'mutate' object versions by
   overwriting/replacing content (Put/CopyObject) or removing the version
   itself (e.g DeleteObjectVersion).

 - Rework of previous ILM transition to fit the new model
   In the new model, a storage class (a.k.a remote tier) is defined by the
   'remote' object storage type (one of s3, azure, GCS), bucket name and a
   prefix.

* Fixed bugs, review comments, and more unit-tests

- Leverage inline small object feature
- Migrate legacy objects to the latest object format before transitioning
- Fix restore to particular version if specified
- Extend SharedDataDirCount to handle transitioned and restored objects
- Restore-object should accept version-id for version-suspended bucket (#12091)
- Check if remote tier creds have sufficient permissions
- Bonus minor fixes to existing error messages

Co-authored-by: Poorna Krishnamoorthy <poorna@minio.io>
Co-authored-by: Krishna Srinivas <krishna@minio.io>
Signed-off-by: Harshavardhana <harsha@minio.io>
2021-04-23 11:58:53 -07:00

63 lines
1.7 KiB
Java

/*
* Copyright (c) 2015-2021 MinIO, Inc.
*
* This file is part of MinIO Object Storage stack
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package io.minio.awssdk.tests;
import java.io.*;
// LimitedInputStream wraps a regular InputStream, calling
// read() will skip some bytes as configured and will also
// return only data with configured length
class LimitedInputStream extends InputStream {
private int skip;
private int length;
private InputStream is;
LimitedInputStream(InputStream is, int skip, int length) {
this.is = is;
this.skip = skip;
this.length = length;
}
@Override
public int read() throws IOException {
int r;
while (skip > 0) {
r = is.read();
if (r < 0) {
throw new IOException("stream ended before being able to skip all bytes");
}
skip--;
}
if (length == 0) {
return -1;
}
r = is.read();
if (r < 0) {
throw new IOException("stream ended before being able to read all bytes");
}
length--;
return r;
}
}