# 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 java.util.Set;

/**
 * A wrapper implementation of Map<String, Object> that provides special handling
 * for document data. This class wraps an existing map and provides custom behavior
 * for the entrySet method to ensure language fields appear first in iteration order.
 * Used throughout the Fess search system for document data manipulation.
 *
 */
public class DocMap implements Map<String, Object> {

          .add("aString", aString)
          .add("anInt", anInt)
          .add("anEnum", anEnum)
          .toString();
    }
  }

  /** Validates that the Comparator equivalent we document is correct. */
  @J2ktIncompatible // TODO b/315311435 - J2kt cannot emulate Comparator<C>.<U>thenComparing()
  public void testComparatorEquivalent() {
    Comparator<Foo> comparatorUsingComparisonChain =
        (a, b) ->

## Get started

In this document we will explain in detail on how to configure multiple users.

### 1. Prerequisites

labels.dict_stopwords_button_download=Download
labels.dict_stopwords_button_upload=Upload
labels.dict_stopwords_file=Stopwords File
labels.boost_document_rule_configuration=Document Boost
labels.boost_document_rule_title_details=Document Boost
labels.boost_document_rule_list_url_expr=Condition
labels.boost_document_rule_url_expr=Condition
labels.boost_document_rule_boost_expr=Boost Expression

labels.dict_stopwords_button_download=Télécharger
labels.dict_stopwords_button_upload=Téléverser
labels.dict_stopwords_file=Fichier de mots vides
labels.boost_document_rule_configuration=Boost de document
labels.boost_document_rule_title_details=Boost de document
labels.boost_document_rule_list_url_expr=Condition
labels.boost_document_rule_url_expr=Condition
labels.boost_document_rule_boost_expr=Expression de boost

     * Returns the search request type.
     *
     * @return The search request type.
     */
    public abstract SearchRequestType getType();

    /**
     * Returns the similar document hash.
     *
     * @return The similar document hash.
     */
    public abstract String getSimilarDocHash();

    /**
     * Returns the track total hits.
     *
     * @return The track total hits.
     */

ion:absolute;top:-100em",e.style.background="none",e.appendChild(f),function(a){return f.innerHTML='&shy;<style media="'+a+'"> #mq-test-1 { width: 42px; }</style>',c.insertBefore(e,d),b=42===f.offsetWidth,c.removeChild(e),{matches:b,media:a}}}(a.document)}(this),function(a){"use strict";function b(){u(!0)}var c={};a.respond=c,c.update=function(){};var d=[],e=function(){var b=!1;try{b=new a.XMLHttpRequest}catch(c){b=new a.ActiveXObject("Microsoft.XMLHTTP")}return function(){return b}}(),f=function(a,b){var...

      "description": "feature request"
    },
    "invalid_question": {
      "name": "type:invalid question",
      "colour": "#CF2E1F",
      "description": "invalid question (not related to GORM or described in document or not enough information provided)"
    },
    "with_playground": {
      "name": "type:with reproduction steps",
      "colour": "#00ff00",
      "description": "with reproduction steps"
    },

///

FastAPI will now:

* **Validate** the data making sure that the max length is 50 characters
* Show a **clear error** for the client when the data is not valid
* **Document** the parameter in the OpenAPI schema *path operation* (so it will show up in the **automatic docs UI**)

## Alternative (old): `Query` as the default value { #alternative-old-query-as-the-default-value }