# 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

---
name: Question
about: Use Stack Overflow instead
title: "\U0001F649"
labels: ''
assignees: ''

---

🛑 𝙎𝙏𝙊𝙋

This issue tracker is not the place for questions!

If you want to ask how to do something, or to understand why something isn't working the way you expect it to, use Stack Overflow. https://stackoverflow.com/questions/tagged/okhttp

 * 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 gradlebuild.basics.tasks

import org.junit.jupiter.api.Assertions.assertEquals
import org.junit.jupiter.api.Test
import org.junit.jupiter.api.io.TempDir
import java.nio.file.FileVisitResult
import java.nio.file.Files
import java.nio.file.Path

 * 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 gradlebuild.buildutils.tasks

import org.gradle.util.GradleVersion
import org.gradle.util.internal.VersionNumber
import spock.lang.Specification

class UpdateAgpVersionsTest extends Specification {

                    ) {
                        "isolatedProjectsIntegTest"
                    } else {
                        "${testCoverage.testType.asCamelCase()}Test"
                    }
                tasks = "clean $testTaskName"
                gradleParams = parameters
                executionMode = BuildStep.ExecutionMode.ALWAYS
            }
        }

)

// Tests for port availability logic written for server startup sequence.
func TestCheckPortAvailability(t *testing.T) {
	if runtime.GOOS != "linux" {
		t.Skip()
	}

	l, err := net.Listen("tcp", "localhost:0") // ask kernel for a free port.
	if err != nil {
		t.Fatal(err)
	}
	defer l.Close()

	port := l.Addr().(*net.TCPAddr).Port

	testCases := []struct {
		host        string
		port        int
		expectedErr error

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."""
}

tasks.idea {
    doFirst { throw RuntimeException("To import in IntelliJ, please follow the instructions here: https://github.com/gradle/gradle/blob/master/CONTRIBUTING.md#intellij") }
}

    return BASE16;
  }

  static final class Alphabet {
    private final String name;
    // this is meant to be immutable -- don't modify it!
    private final char[] chars;
    final int mask;
    final int bitsPerChar;
    final int charsPerChunk;
    final int bytesPerChunk;
    private final byte[] decodabet;
    private final boolean[] validPadding;
    private final boolean ignoreCase;

import org.gradle.api.file.DirectoryProperty
import org.gradle.api.provider.Property
import org.gradle.api.services.BuildService
import org.gradle.api.services.BuildServiceParameters
import org.gradle.api.tasks.testing.Test
import org.gradle.util.GradleVersion
import java.io.StringReader
import java.util.Properties


abstract class BuildBucketProvider : BuildService<BuildBucketProvider.Params> {

## Prerequisites

Install Dex by following [Dex Getting Started Guide](https://dexidp.io/docs/getting-started/)

### Start Dex

```