case bool:
		_, ok = b.value.(bool)
	case string:
		_, ok = b.value.(string)
	case int64:
		_, ok = b.value.(int64)
	case float64:
		_, ok = b.value.(float64)
	case time.Time:
		_, ok = b.value.(time.Time)
	case []byte:
		_, ok = b.value.([]byte)
	case []Value:
		_, ok = b.value.([]Value)
	default:
		ok = reflect.TypeOf(v.value) == reflect.TypeOf(b.value)
	}
	return ok
}

func skipContentSha256Cksum(r *http.Request) bool {
	var (
		v  []string
		ok bool
	)

	if isRequestPresignedSignatureV4(r) {
		v, ok = r.Form[xhttp.AmzContentSha256]
		if !ok {
			v, ok = r.Header[xhttp.AmzContentSha256]
		}
	} else {
		v, ok = r.Header[xhttp.AmzContentSha256]
	}

	// Skip if no header was set.
	if !ok {
		return true
	}

	// If x-amz-content-sha256 is set and the value is not

	sys.hMutex.RLock()
	defer sys.hMutex.RUnlock()
	if h, ok := sys.hc[ep.Host]; ok {
		return !h.Online
	}
	go sys.initHC(ep)
	return false
}

// markOffline sets endpoint to offline if network i/o timeout seen.
func (sys *BucketTargetSys) markOffline(ep *url.URL) {
	sys.hMutex.Lock()
	defer sys.hMutex.Unlock()
	if h, ok := sys.hc[ep.Host]; ok {
		h.Online = false
		sys.hc[ep.Host] = h
	}
}

				return true, nil
			}

		case underscore:
			if len(s) == 0 {
				text, ok = dropRune(text)
				if !ok {
					return false, nil
				}
				continue
			}

			text, ok = matcher(text, string(s), hasLeadingPercent)
			if !ok {
				return false, nil
			}
			hasLeadingPercent = false

			text, ok = dropRune(text)
			if !ok {
				return false, nil
			}
			s = []rune{}

		case escape:

	if objectAPI == nil {
		return
	}

	if GlobalKMS == nil {
		writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrKMSNotConfigured), r.URL)
		return
	}

	if _, ok := GlobalKMS.(kms.KeyManager); !ok {
		writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrNotImplemented), r.URL)
		return
	}

	metrics, err := GlobalKMS.Metrics(ctx)
	if err != nil {

	}

	keyFuncCallback := func(jwtToken *jwtgo.Token) (interface{}, error) {
		kid, ok := jwtToken.Header["kid"].(string)
		if !ok {
			return nil, fmt.Errorf("Invalid kid value %v", jwtToken.Header["kid"])
		}
		return r.pubKeys.get(kid), nil
	}

	pCfg, ok := r.arnProviderCfgsMap[arn]
	if !ok {
		return fmt.Errorf("Role %s does not exist", arn)
	}

				return nil, false, err
			}
			return jsonpathEval(p[1:], val)
		default:
			return nil, false, errKeyLookup
		}

	case p[0].Index != nil:
		idx := *p[0].Index

		arr, ok := v.([]interface{})
		if !ok {
			return nil, false, errIndexLookup
		}

		if idx >= len(arr) {
			return nil, false, nil
		}
		return jsonpathEval(p[1:], arr[idx])

	case p[0].ObjectWildcard:
		switch kvs := v.(type) {

}

// Add - adds unique target to target list.
func (list *TargetList) Add(targets ...Target) error {
	list.Lock()
	defer list.Unlock()

	for _, target := range targets {
		if _, ok := list.targets[target.ID()]; ok {
			return fmt.Errorf("target %v already exists", target.ID())
		}
		list.targets[target.ID()] = target
	}

	return nil
}

// Lookup - checks whether target by target ID exists is valid or not.

}

// Verify if request has AWS PreSign Version '4'.
func isRequestPresignedSignatureV4(r *http.Request) bool {
	_, ok := r.Form[xhttp.AmzCredential]
	return ok
}

// Verify request has AWS PreSign Version '2'.
func isRequestPresignedSignatureV2(r *http.Request) bool {
	_, ok := r.Form[xhttp.AmzAccessKeyID]
	return ok
}

// Verify if request has AWS Post policy Signature Version '4'.

	case <-sys.configLoaded:
	default:
		sys.store.LoadUser(ctx, accessKey)
		loadUserCalled = true
	}

	u, ok = sys.store.GetUser(accessKey)
	if !ok && !loadUserCalled {
		sys.store.LoadUser(ctx, accessKey)
		u, ok = sys.store.GetUser(accessKey)
	}

	return u, ok && u.Credentials.IsValid()
}

// Notify all other MinIO peers to load group.