// Init represents the structure.
type Init struct {
	done uint32
	m    sync.Mutex
}

// Do is similar to sync.Once.Do - makes one successful
// call to the function. ie, it invokes the function
// if it is not successful yet.
func (l *Init) Do(f func() error) error {
	if atomic.LoadUint32(&l.done) == 0 {
		return l.do(f)
	}
	return nil
}

				"X-Amz-Content-Sha256": payloadSHA256,
			},
			region:   region,
			expected: ErrSignatureDoesNotMatch,
		},
		// (6) Should error if the request is not ready yet, ie X-Amz-Date is in the future.
		{
			queryParams: map[string]string{
				"X-Amz-Algorithm":      signV4Algorithm,
				"X-Amz-Date":           now.Add(1 * time.Hour).Format(iso8601Format),
				"X-Amz-Expires":        "60",

		return nil, err
	}
	core.SetAppInfo("minio-federated", ReleaseTag)
	return core, nil
}

// Check if the destination bucket is on a remote site, this code only gets executed
// when federation is enabled, ie when globalDNSConfig is non 'nil'.
//
// This function is similar to isRemoteCallRequired but specifically for COPY object API
// if destination and source are same we do not need to check for destination bucket

	err := val.Decode(&tmp)
	if err != nil {
		return err
	}

	*p = BatchJobExpirePurge(tmp)
	p.line, p.col = val.Line, val.Column
	return nil
}

// Validate returns nil if value is valid, ie > 0.
func (p BatchJobExpirePurge) Validate() error {
	if p.RetainVersions < 0 {
		return BatchJobYamlErr{
			line: p.line,
			col:  p.col,
			msg:  "retainVersions must be >= 0",
		}
	}
	return nil

		}

		// As this is path in the URL, we should use path package, not filepath package.
		// On MS Windows, filepath.Clean() converts into Windows path style ie `/foo` becomes `\foo`
		u.Path = path.Clean(u.Path)
		if isEmptyPath(u.Path) {
			return ep, fmt.Errorf("empty or root path is not supported in URL endpoint")
		}

			if err != nil && !errors.Is(err, context.Canceled) {
				replLogIf(GlobalContext, err)
			}
		},
	})

	// On macOS, if a process already listens on LOCALIPADDR:PORT, net.Listen() falls back
	// to IPv6 address ie minio will start listening on IPv6 address whereas another
	// (non-)minio process is listening on IPv4 of given port.
	// To avoid this error situation we check for port availability.

			return errDoneForNow
		}
		isDeleteMarker = xl.Type == DeleteType
		return errDoneForNow
	})
	return isDeleteMarker
}

// AllHidden returns true are no versions that would show up in a listing (ie all free markers)
// Optionally also return early if top is a delete marker.
func (x xlMetaBuf) AllHidden(topDeleteMarker bool) bool {
	vers, headerV, _, buf, err := decodeXLHeaders(x)
	if err != nil {
		return false

* Designed and built with all the love in the world @twitter by @mdo and @fat.

---------------------------------------------------
For t_cl_generator.cc

 * Copyright (c) 2008- Patrick Collison <patrick@collison.ie>
 * Copyright (c) 2006- Facebook

---------------------------------------------------

================================================================

github.com/armon/go-metrics