# OPA Quickstart Guide [![Slack](https://slack.minio.io/slack?type=svg)](https://slack.minio.io)

OPA is a lightweight general-purpose policy engine that can be co-located with MinIO server, in this document we talk about how to use OPA HTTP API to authorize requests. It can be used with any type of credentials (STS based like OpenID or LDAP, regular IAM users or service accounts).

OPA is enabled through MinIO's Access Management Plugin feature.

## Get started

import jcifs.smb1.smb1.SecurityDescriptor;

/**
 * MS-RPC share information retrieval operation.
 *
 * This class implements the Server Service (SRVSVC) ShareGetInfo operation
 * for retrieving detailed information about a network share, including
 * security descriptors.
 */
public class MsrpcShareGetInfo extends srvsvc.ShareGetInfo {

    /**
     * Creates a new request to get share information.
     *

That's because it is using the same name as in the OpenAPI spec. So that if you need to investigate more about any of these security schemes you can just copy and paste it to find more information about it.

///

The `oauth2_scheme` variable is an instance of `OAuth2PasswordBearer`, but it is also a "callable".

It could be called as:

```Python

import jcifs.internal.smb2.ServerMessageBlock2Response;
import jcifs.internal.util.SMBUtil;
import jcifs.smb.NtStatus;

/**
 * SMB2 Change Notify response message.
 *
 * This response contains information about file system changes
 * that occurred in the monitored directory.
 *
 * @author mbechler
 */
public class Smb2ChangeNotifyResponse extends ServerMessageBlock2Response implements NotifyResponse {

import org.apache.maven.api.annotations.Immutable;
import org.apache.maven.api.annotations.Nonnull;
import org.apache.maven.api.annotations.Nullable;

/**
 * {@code ArtifactCoordinates} completed with information about how the artifact will be used.
 * This information includes the dependency type (main classes, test classes, <i>etc.</i>),
 * a scope (compile, runtime <i>etc.</i>), an obligation (whether the dependency

import jcifs.Configuration;
import jcifs.internal.smb1.AndXServerMessageBlock;
import jcifs.internal.util.SMBUtil;

/**
 * SMB1 Write AndX Response message.
 *
 * This response contains information about the write operation,
 * including the number of bytes actually written.
 */
public class SmbComWriteAndXResponse extends AndXServerMessageBlock {

    private long count;

    /**

import jcifs.internal.dtyp.ACE;
import jcifs.internal.dtyp.SecurityDescriptor;

/**
 * MSRPC implementation for retrieving share information.
 * This class provides functionality to get detailed information about
 * a specific share using the Server Service RPC interface.
 */
public class MsrpcShareGetInfo extends srvsvc.ShareGetInfo {

    /**
     * Creates a new request to get share information.
     *

/**
 * Describes a problem that was encountered during model building. A problem can either be an exception that was thrown
 * or a simple string message. In addition, a problem carries a hint about its source, e.g. the POM file that exhibits
 * the problem.
 *
 */
public interface ModelProblem extends BuilderProblem {

    /**
     * Enumeration of model versions that can be validated.

- fastapi-people.md
- Resources:
  - resources/index.md
  - help-fastapi.md
  - contributing.md
  - project-generation.md
  - external-links.md
  - newsletter.md
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- About:
  - about/index.md
  - alternatives.md
  - history-design-future.md
  - benchmarks.md
  - management.md
- release-notes.md
markdown_extensions:
  abbr: null
  attr_list: null
  footnotes: null

import jcifs.internal.SMBProtocolDecodingException;
import jcifs.internal.util.SMBUtil;

/**
 * Represents the FILE_FS_SIZE_INFORMATION structure used to query file system size information.
 * This structure provides details about the total allocation units, free allocation units,
 * sectors per allocation unit, and bytes per sector for a file system volume.
 */
public class FileFsSizeInformation implements AllocInfo {