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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Read-Only S3 Virtual File Driver (VFD) *
* Copyright (c) 2017-2018, The HDF Group. *
* *
* All rights reserved. *
* *
* NOTICE: *
* All information contained herein is, and remains, the property of The HDF *
* Group. The intellectual and technical concepts contained herein are *
* proprietary to The HDF Group. Dissemination of this information or *
* reproduction of this material is strictly forbidden unless prior written *
* permission is obtained from The HDF Group. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
package hdf.hdf5lib.structs;
import java.io.Serializable;
/**
* Java representation of the ROS3 VFD file access property list (fapl)
* structure.
*
* Used for the access of files hosted remotely on S3 by Amazon.
*
* For simplicity, implemented assuming that all ROS3 fapls have components:
* - version
* - authenticate
* - aws_region
* - secret_id
* - secret_key
*
* Future implementations may be created to enable different fapl "shapes"
* depending on provided version.
*
* proposed:
*
* H5FD_ros3_fapl_t (super class, has only version field)
* H5FD_ros3_fapl_v1_t (extends super with Version 1 components)
* H5FD_ros3_fapl_v2_t (extends super with Version 2 components)
* and so on, for each version
*
* "super" is passed around, and is version-checked and re-cast as
* appropriate
*/
public class H5FD_ros3_fapl_t implements Serializable {
private static final long serialVersionUID = 8985533001471224030L;
private int version;
private boolean authenticate;
private String aws_region;
private String secret_id;
private String secret_key;
/**
* Create a "default" fapl_t structure, for anonymous access.
*/
public H5FD_ros3_fapl_t () {
/* H5FD_ros3_fapl_t("", "", ""); */ /* defer */
this.version = 1;
this.aws_region = "";
this.secret_id = "";
this.secret_key = "";
}
/**
* Create a fapl_t structure with the specified components.
* If all are the empty string, is anonymous (non-authenticating).
* Region and ID must both be supplied for authentication.
*
* @param region "aws region" for authenticating request
* @param id "secret id" or "access id" for authenticating request
* @param key "secret key" or "access key" for authenticating request
*/
public H5FD_ros3_fapl_t (String region, String id, String key) {
this.version = 1; /* must equal H5FD_CURR_ROS3_FAPL_T_VERSION */
/* as found in H5FDros3.h */
this.aws_region = region;
this.secret_id = id;
this.secret_key = key;
}
@Override
public boolean equals(Object o) {
if (o == null)
return false;
if (!(o instanceof H5FD_ros3_fapl_t))
return false;
H5FD_ros3_fapl_t other = (H5FD_ros3_fapl_t)o;
if (this.version != other.version)
return false;
if (!this.aws_region.equals(other.aws_region))
return false;
if (!this.secret_key.equals(other.secret_key))
return false;
if (!this.secret_id.equals(other.secret_id))
return false;
return true;
}
@Override
public int hashCode() {
/* this is a _very bad_ hash algorithm for purposes of hashing! */
/* implemented to satisfy the "contract" regarding equality */
int k = (int)this.version;
k += this.aws_region.length();
k += this.secret_id.length();
k += this.secret_key.length();
return k;
}
@Override
public String toString() {
return "H5FD_ros3_fapl_t (Version:" + this.version + ") {" +
"\n aws_region : " + this.aws_region +
"\n secret_id : " + this.secret_id +
"\n secret_key : " + this.secret_key +
"\n}\n";
}
}
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