"bytes"
	"encoding/json"
	"io"
	"net/http"

	"github.com/minio/minio/internal/config"
	"github.com/minio/pkg/v3/env"
	xnet "github.com/minio/pkg/v3/net"
	"github.com/minio/pkg/v3/policy"
)

// Env IAM OPA URL
const (
	URL       = "url"
	AuthToken = "auth_token"

	EnvPolicyOpaURL       = "MINIO_POLICY_OPA_URL"
	EnvPolicyOpaAuthToken = "MINIO_POLICY_OPA_AUTH_TOKEN"
)

- Creation and deletion of buckets and objects
- Creation and deletion of all IAM users, groups, policies and their mappings to users or groups
- Creation of STS credentials
- Creation and deletion of service accounts (except those owned by the root user)
- Changes to Bucket features such as:
  - Bucket Policies

| `minio_node_iam_sync_failures`             | Number of failed IAM data syncs since server start.         |
| `minio_node_iam_sync_successes`            | Number of successful IAM data syncs since server start.     |

## Information Lifecycle Management (ILM) Metrics

| *Valid Range* | *Minimum value of 900. Maximum value of 31536000.* |
| *Required*    | *No*                                               |

### Policy

		Description:    "STS API not initialized, please try again.",
		HTTPStatusCode: http.StatusServiceUnavailable,
	},
	ErrSTSIAMNotInitialized: {
		Code:           "STSIAMNotInitialized",
		Description:    "STS IAM not initialized, please try again.",
		HTTPStatusCode: http.StatusServiceUnavailable,
	},
	ErrSTSUpstreamError: {
		Code:           "InternalError",

//
// Reference: https://docs.aws.amazon.com/general/latest/gr/aws-arns-and-namespaces.html

const (
	arnPrefixArn        = "arn"
	arnPartitionMinio   = "minio"
	arnServiceIAM       = "iam"
	arnResourceTypeRole = "role"
)

// ARN - representation of resources based on AWS ARNs.
type ARN struct {
	Partition    string
	Service      string
	Region       string
	ResourceType string

and credential details for every API call to an external HTTP(S) endpoint and expects an allow/deny response. MinIO is thus able to delegate access management to an external system, and users are able to use a custom solution instead of S3 standard IAM policies.

Latency sensitive applications may notice an increased latency due to a request to the external plugin upon every authenticated request to MinIO. User are advised to provision their infrastructure such that latency and performance is...

- The user can now use these credentials to make requests to the MinIO server.

		writeResponse(w, http.StatusServiceUnavailable, nil, mimeNone)
		return nil
	}

	if !globalIAMSys.Initialized() {
		w.Header().Set(xhttp.MinIOServerStatus, "iam-offline")
		writeResponse(w, http.StatusServiceUnavailable, nil, mimeNone)
		return nil
	}

	return objLayer
}

// ClusterCheckHandler returns if the server is ready for requests.

| *Valid Range* | *Minimum value of 900. Maximum value of 31536000.* |
| *Required*    | *No*                                               |

### Policy