[Prometheus](https://prometheus.io) is a cloud-native monitoring platform. Prometheus offers a multi-dimensional data model with time series data identified by metric name and key/value pairs. The data collection happens via a pull model over HTTP/HTTPS. Users looking to monitor their MinIO instances can point Prometheus configuration to scrape data from following endpoints. 

- MinIO exports Prometheus compatible data by default as an authorized endpoint at `/minio/v2/metrics/cluster`. 

	"math"
	"net/url"
	"sort"
	"strings"
	"sync"

	"github.com/tinylib/msgp/msgp"
)

// Recycler will override the internal reuse in typed handlers.
// When this is supported, the handler will not do internal pooling of objects,
// call Recycle() when the object is no longer needed.
// The recycler should handle nil pointers.
type Recycler interface {
	Recycle()
}

// MSS is a map[string]string that can be serialized.

## Typically the deployment/statefulset includes checksums of secrets/config,
## So that when these change on a subsequent helm install, the deployment/statefulset
## is restarted. This can result in unnecessary restarts under GitOps tooling such as
## flux, so set to "true" to disable this behaviour.
ignoreChartChecksums: false

## Additional arguments to pass to minio binary
extraArgs: []
# example for enabling FTP:
#   - --ftp=\"address=:8021\"

	storageLogIf(ctx, fmt.Errorf("reached end of serverPools (total: %v, atTotal: %v, choose: %v)", total, atTotal, choose))
	return -1
}

// getServerPoolsAvailableSpace will return the available space of each pool after storing the content.
// If there is not enough space the pool will return 0 bytes available.
// The size of each will be multiplied by the number of sets.
// Negative sizes are seen as 0 bytes.

	for k, v := range encMetadata {
		metadata[k] = v
	}

	// Ensure that metadata does not contain sensitive information
	crypto.RemoveSensitiveEntries(metadata)

	if isCompressible(r.Header, object) {
		// Storing the compression metadata.
		metadata[ReservedMetadataPrefix+"compression"] = compressionAlgorithmV2
	}

	opts, err := putOptsFromReq(ctx, r, bucket, object, metadata)
	if err != nil {

	reader = rd
	if buf != nil {
		reader = io.TeeReader(rd, buf)
	}

	actualSize := size
	var idxCb func() []byte
	if isCompressible(r.Header, object) && size > minCompressibleSize {
		// Storing the compression metadata.
		metadata[ReservedMetadataPrefix+"compression"] = compressionAlgorithmV2
		metadata[ReservedMetadataPrefix+"actual-size"] = strconv.FormatInt(size, 10)

	now := UTCNow().Round(time.Millisecond)
	d.UpdateDate = now
	if d.CreateDate.IsZero() {
		d.CreateDate = now
	}
	d.Policy = p
}

// parseJSON parses both the old and the new format for storing policy
// definitions.
//
// The on-disk format of policy definitions has changed (around early 12/2021)
// from policy.Policy to PolicyDoc. To avoid a migration, loading supports
// both the old and the new formats.

	// IndexCB will return any index created but the compression.
	// Object must have been read at this point.
	IndexCB func() []byte

	// InclFreeVersions indicates that free versions need to be included
	// when looking up a version by fi.VersionID
	InclFreeVersions bool
	// SkipFreeVersion skips adding a free version when a tiered version is
	// being 'replaced'
	// Note: Used only when a tiered object is being expired.

}

// hashOrder - hashes input key to return consistent
// hashed integer slice. Returned integer order is salted
// with an input key. This results in consistent order.
// NOTE: collisions are fine, we are not looking for uniqueness
// in the slices returned.
func hashOrder(key string, cardinality int) []int {
	if cardinality <= 0 {
		// Returns an empty int slice for cardinality < 0.
		return nil
	}

		return "", false, errors.New("no Base DNs given")
	}

	// Check that DN exists in the LDAP directory.
	validatedDN, err := xldap.LookupDN(conn, dn)
	if err != nil {
		return "", false, fmt.Errorf("Error looking up DN %s: %w", dn, err)
	}
	if validatedDN == "" {
		return "", false, nil
	}

	// This will not return an error as the argument is validated to be a DN.
	pdn, _ := ldap.ParseDN(validatedDN)