Golang field.Path類代碼示例

func validateIngressRuleValue(ingressRule *extensions.IngressRuleValue, fldPath *field.Path) field.ErrorList {
	allErrs := field.ErrorList{}
	if ingressRule.HTTP != nil {
		allErrs = append(allErrs, validateHTTPIngressRuleValue(ingressRule.HTTP, fldPath.Child("http"))...)
	}
	return allErrs
}

func ValidatePodSecurityPolicySpecificAnnotations(annotations map[string]string, fldPath *field.Path) field.ErrorList {
	allErrs := field.ErrorList{}

	if p := annotations[apparmor.DefaultProfileAnnotationKey]; p != "" {
		if err := apparmor.ValidateProfileFormat(p); err != nil {
			allErrs = append(allErrs, field.Invalid(fldPath.Key(apparmor.DefaultProfileAnnotationKey), p, err.Error()))
		}
	}
	if allowed := annotations[apparmor.AllowedProfilesAnnotationKey]; allowed != "" {
		for _, p := range strings.Split(allowed, ",") {
			if err := apparmor.ValidateProfileFormat(p); err != nil {
				allErrs = append(allErrs, field.Invalid(fldPath.Key(apparmor.AllowedProfilesAnnotationKey), allowed, err.Error()))
			}
		}
	}

	sysctlAnnotation := annotations[extensions.SysctlsPodSecurityPolicyAnnotationKey]
	sysctlFldPath := fldPath.Key(extensions.SysctlsPodSecurityPolicyAnnotationKey)
	sysctls, err := extensions.SysctlsFromPodSecurityPolicyAnnotation(sysctlAnnotation)
	if err != nil {
		allErrs = append(allErrs, field.Invalid(sysctlFldPath, sysctlAnnotation, err.Error()))
	} else {
		allErrs = append(allErrs, validatePodSecurityPolicySysctls(sysctlFldPath, sysctls)...)
	}

	if p := annotations[seccomp.DefaultProfileAnnotationKey]; p != "" {
		allErrs = append(allErrs, apivalidation.ValidateSeccompProfile(p, fldPath.Key(seccomp.DefaultProfileAnnotationKey))...)
	}
	if allowed := annotations[seccomp.AllowedProfilesAnnotationKey]; allowed != "" {
		for _, p := range strings.Split(allowed, ",") {
			allErrs = append(allErrs, apivalidation.ValidateSeccompProfile(p, fldPath.Key(seccomp.AllowedProfilesAnnotationKey))...)
		}
	}
	return allErrs
}

func ValidateResourceRequirements(requirements *v1.ResourceRequirements, fldPath *field.Path) field.ErrorList {
	allErrs := field.ErrorList{}
	limPath := fldPath.Child("limits")
	reqPath := fldPath.Child("requests")
	for resourceName, quantity := range requirements.Limits {
		fldPath := limPath.Key(string(resourceName))
		// Validate resource name.
		allErrs = append(allErrs, validateContainerResourceName(string(resourceName), fldPath)...)

		// Validate resource quantity.
		allErrs = append(allErrs, ValidateResourceQuantityValue(string(resourceName), quantity, fldPath)...)

		// Check that request <= limit.
		requestQuantity, exists := requirements.Requests[resourceName]
		if exists {
			// For GPUs, not only requests can't exceed limits, they also can't be lower, i.e. must be equal.
			if resourceName == v1.ResourceNvidiaGPU && quantity.Cmp(requestQuantity) != 0 {
				allErrs = append(allErrs, field.Invalid(reqPath, requestQuantity.String(), fmt.Sprintf("must be equal to %s limit", v1.ResourceNvidiaGPU)))
			} else if quantity.Cmp(requestQuantity) < 0 {
				allErrs = append(allErrs, field.Invalid(limPath, quantity.String(), fmt.Sprintf("must be greater than or equal to %s request", resourceName)))
			}
		}
	}
	for resourceName, quantity := range requirements.Requests {
		fldPath := reqPath.Key(string(resourceName))
		// Validate resource name.
		allErrs = append(allErrs, validateContainerResourceName(string(resourceName), fldPath)...)
		// Validate resource quantity.
		allErrs = append(allErrs, ValidateResourceQuantityValue(string(resourceName), quantity, fldPath)...)
	}

	return allErrs
}

func ValidateClusterSpec(spec *federation.ClusterSpec, fieldPath *field.Path) field.ErrorList {
	allErrs := field.ErrorList{}
	// address is required.
	if len(spec.ServerAddressByClientCIDRs) == 0 {
		allErrs = append(allErrs, field.Required(fieldPath.Child("serverAddressByClientCIDRs"), ""))
	}
	return allErrs
}

// hasHostPort checks the port definitions on the container for HostPort > 0.
func (s *simpleProvider) hasInvalidHostPort(container *api.Container, fldPath *field.Path) field.ErrorList {
	allErrs := field.ErrorList{}
	for _, cp := range container.Ports {
		if cp.HostPort > 0 && !s.isValidHostPort(int(cp.HostPort)) {
			detail := fmt.Sprintf("Host port %d is not allowed to be used.  Allowed ports: %v", cp.HostPort, s.psp.Spec.HostPorts)
			allErrs = append(allErrs, field.Invalid(fldPath.Child("hostPort"), cp.HostPort, detail))
		}
	}
	return allErrs
}

func ValidateLabelSelector(ps *metav1.LabelSelector, fldPath *field.Path) field.ErrorList {
	allErrs := field.ErrorList{}
	if ps == nil {
		return allErrs
	}
	allErrs = append(allErrs, ValidateLabels(ps.MatchLabels, fldPath.Child("matchLabels"))...)
	for i, expr := range ps.MatchExpressions {
		allErrs = append(allErrs, ValidateLabelSelectorRequirement(expr, fldPath.Child("matchExpressions").Index(i))...)
	}
	return allErrs
}

func ValidateSelfSubjectAccessReviewSpec(spec authorizationapi.SelfSubjectAccessReviewSpec, fldPath *field.Path) field.ErrorList {
	allErrs := field.ErrorList{}
	if spec.ResourceAttributes != nil && spec.NonResourceAttributes != nil {
		allErrs = append(allErrs, field.Invalid(fldPath.Child("nonResourceAttributes"), spec.NonResourceAttributes, `cannot be specified in combination with resourceAttributes`))
	}
	if spec.ResourceAttributes == nil && spec.NonResourceAttributes == nil {
		allErrs = append(allErrs, field.Invalid(fldPath.Child("resourceAttributes"), spec.NonResourceAttributes, `exactly one of nonResourceAttributes or resourceAttributes must be specified`))
	}

	return allErrs
}

// validatePSPSELinux validates the SELinux fields of PodSecurityPolicy.
func validatePSPSELinux(fldPath *field.Path, seLinux *extensions.SELinuxStrategyOptions) field.ErrorList {
	allErrs := field.ErrorList{}

	// ensure the selinux strategy has a valid rule
	supportedSELinuxRules := sets.NewString(string(extensions.SELinuxStrategyMustRunAs),
		string(extensions.SELinuxStrategyRunAsAny))
	if !supportedSELinuxRules.Has(string(seLinux.Rule)) {
		allErrs = append(allErrs, field.NotSupported(fldPath.Child("rule"), seLinux.Rule, supportedSELinuxRules.List()))
	}

	return allErrs
}

// validatePSPCapsAgainstDrops ensures an allowed cap is not listed in the required drops.
func validatePSPCapsAgainstDrops(requiredDrops []api.Capability, capsToCheck []api.Capability, fldPath *field.Path) field.ErrorList {
	allErrs := field.ErrorList{}
	if requiredDrops == nil {
		return allErrs
	}
	for _, cap := range capsToCheck {
		if hasCap(cap, requiredDrops) {
			allErrs = append(allErrs, field.Invalid(fldPath, cap,
				fmt.Sprintf("capability is listed in %s and requiredDropCapabilities", fldPath.String())))
		}
	}
	return allErrs
}

// validatePodSecurityPolicyVolumes validates the volume fields of PodSecurityPolicy.
func validatePodSecurityPolicyVolumes(fldPath *field.Path, volumes []extensions.FSType) field.ErrorList {
	allErrs := field.ErrorList{}
	allowed := psputil.GetAllFSTypesAsSet()
	// add in the * value since that is a pseudo type that is not included by default
	allowed.Insert(string(extensions.All))
	for _, v := range volumes {
		if !allowed.Has(string(v)) {
			allErrs = append(allErrs, field.NotSupported(fldPath.Child("volumes"), v, allowed.List()))
		}
	}

	return allErrs
}

func validateIngressRules(ingressRules []extensions.IngressRule, fldPath *field.Path) field.ErrorList {
	allErrs := field.ErrorList{}
	if len(ingressRules) == 0 {
		return append(allErrs, field.Required(fldPath, ""))
	}
	for i, ih := range ingressRules {
		if len(ih.Host) > 0 {
			if isIP := (net.ParseIP(ih.Host) != nil); isIP {
				allErrs = append(allErrs, field.Invalid(fldPath.Index(i).Child("host"), ih.Host, "must be a DNS name, not an IP address"))
			}
			// TODO: Ports and ips are allowed in the host part of a url
			// according to RFC 3986, consider allowing them.
			if strings.Contains(ih.Host, "*") {
				for _, msg := range validation.IsWildcardDNS1123Subdomain(ih.Host) {
					allErrs = append(allErrs, field.Invalid(fldPath.Index(i).Child("host"), ih.Host, msg))
				}
				continue
			}
			for _, msg := range validation.IsDNS1123Subdomain(ih.Host) {
				allErrs = append(allErrs, field.Invalid(fldPath.Index(i).Child("host"), ih.Host, msg))
			}
		}
		allErrs = append(allErrs, validateIngressRuleValue(&ih.IngressRuleValue, fldPath.Index(0))...)
	}
	return allErrs
}

func validateHTTPIngressRuleValue(httpIngressRuleValue *extensions.HTTPIngressRuleValue, fldPath *field.Path) field.ErrorList {
	allErrs := field.ErrorList{}
	if len(httpIngressRuleValue.Paths) == 0 {
		allErrs = append(allErrs, field.Required(fldPath.Child("paths"), ""))
	}
	for i, rule := range httpIngressRuleValue.Paths {
		if len(rule.Path) > 0 {
			if !strings.HasPrefix(rule.Path, "/") {
				allErrs = append(allErrs, field.Invalid(fldPath.Child("paths").Index(i).Child("path"), rule.Path, "must be an absolute path"))
			}
			// TODO: More draconian path regex validation.
			// Path must be a valid regex. This is the basic requirement.
			// In addition to this any characters not allowed in a path per
			// RFC 3986 section-3.3 cannot appear as a literal in the regex.
			// Consider the example: http://host/valid?#bar, everything after
			// the last '/' is a valid regex that matches valid#bar, which
			// isn't a valid path, because the path terminates at the first ?
			// or #. A more sophisticated form of validation would detect that
			// the user is confusing url regexes with path regexes.
			_, err := regexp.CompilePOSIX(rule.Path)
			if err != nil {
				allErrs = append(allErrs, field.Invalid(fldPath.Child("paths").Index(i).Child("path"), rule.Path, "must be a valid regex"))
			}
		}
		allErrs = append(allErrs, validateIngressBackend(&rule.Backend, fldPath.Child("backend"))...)
	}
	return allErrs
}

// Ensure a pod's SecurityContext is in compliance with the given constraints.
func (s *simpleProvider) ValidatePodSecurityContext(pod *api.Pod, fldPath *field.Path) field.ErrorList {
	allErrs := field.ErrorList{}

	if pod.Spec.SecurityContext == nil {
		allErrs = append(allErrs, field.Invalid(fldPath.Child("securityContext"), pod.Spec.SecurityContext, "No security context is set"))
		return allErrs
	}

	fsGroups := []int64{}
	if pod.Spec.SecurityContext.FSGroup != nil {
		fsGroups = append(fsGroups, *pod.Spec.SecurityContext.FSGroup)
	}
	allErrs = append(allErrs, s.strategies.FSGroupStrategy.Validate(pod, fsGroups)...)
	allErrs = append(allErrs, s.strategies.SupplementalGroupStrategy.Validate(pod, pod.Spec.SecurityContext.SupplementalGroups)...)
	allErrs = append(allErrs, s.strategies.SeccompStrategy.ValidatePod(pod)...)

	// make a dummy container context to reuse the selinux strategies
	container := &api.Container{
		Name: pod.Name,
		SecurityContext: &api.SecurityContext{
			SELinuxOptions: pod.Spec.SecurityContext.SELinuxOptions,
		},
	}
	allErrs = append(allErrs, s.strategies.SELinuxStrategy.Validate(pod, container)...)

	if !s.psp.Spec.HostNetwork && pod.Spec.SecurityContext.HostNetwork {
		allErrs = append(allErrs, field.Invalid(fldPath.Child("hostNetwork"), pod.Spec.SecurityContext.HostNetwork, "Host network is not allowed to be used"))
	}

	if !s.psp.Spec.HostPID && pod.Spec.SecurityContext.HostPID {
		allErrs = append(allErrs, field.Invalid(fldPath.Child("hostPID"), pod.Spec.SecurityContext.HostPID, "Host PID is not allowed to be used"))
	}

	if !s.psp.Spec.HostIPC && pod.Spec.SecurityContext.HostIPC {
		allErrs = append(allErrs, field.Invalid(fldPath.Child("hostIPC"), pod.Spec.SecurityContext.HostIPC, "Host IPC is not allowed to be used"))
	}

	allErrs = append(allErrs, s.strategies.SysctlsStrategy.Validate(pod)...)

	// TODO(timstclair): ValidatePodSecurityContext should be renamed to ValidatePod since its scope
	// is not limited to the PodSecurityContext.
	if len(pod.Spec.Volumes) > 0 && !psputil.PSPAllowsAllVolumes(s.psp) {
		allowedVolumes := psputil.FSTypeToStringSet(s.psp.Spec.Volumes)
		for i, v := range pod.Spec.Volumes {
			fsType, err := psputil.GetVolumeFSType(v)
			if err != nil {
				allErrs = append(allErrs, field.Invalid(field.NewPath("spec", "volumes").Index(i), string(fsType), err.Error()))
				continue
			}

			if !allowedVolumes.Has(string(fsType)) {
				allErrs = append(allErrs, field.Invalid(
					field.NewPath("spec", "volumes").Index(i), string(fsType),
					fmt.Sprintf("%s volumes are not allowed to be used", string(fsType))))
			}
		}
	}

	return allErrs
}

// ValidateStatefulSetSpec tests if required fields in the StatefulSet spec are set.
func ValidateStatefulSetSpec(spec *apps.StatefulSetSpec, fldPath *field.Path) field.ErrorList {
	allErrs := field.ErrorList{}

	allErrs = append(allErrs, apivalidation.ValidateNonnegativeField(int64(spec.Replicas), fldPath.Child("replicas"))...)
	if spec.Selector == nil {
		allErrs = append(allErrs, field.Required(fldPath.Child("selector"), ""))
	} else {
		allErrs = append(allErrs, unversionedvalidation.ValidateLabelSelector(spec.Selector, fldPath.Child("selector"))...)
		if len(spec.Selector.MatchLabels)+len(spec.Selector.MatchExpressions) == 0 {
			allErrs = append(allErrs, field.Invalid(fldPath.Child("selector"), spec.Selector, "empty selector is not valid for statefulset."))
		}
	}

	selector, err := metav1.LabelSelectorAsSelector(spec.Selector)
	if err != nil {
		allErrs = append(allErrs, field.Invalid(fldPath.Child("selector"), spec.Selector, ""))
	} else {
		allErrs = append(allErrs, ValidatePodTemplateSpecForStatefulSet(&spec.Template, selector, fldPath.Child("template"))...)
	}

	if spec.Template.Spec.RestartPolicy != api.RestartPolicyAlways {
		allErrs = append(allErrs, field.NotSupported(fldPath.Child("template", "spec", "restartPolicy"), spec.Template.Spec.RestartPolicy, []string{string(api.RestartPolicyAlways)}))
	}

	return allErrs
}

// validatePodSecurityPolicySysctls validates the sysctls fields of PodSecurityPolicy.
func validatePodSecurityPolicySysctls(fldPath *field.Path, sysctls []string) field.ErrorList {
	allErrs := field.ErrorList{}
	for i, s := range sysctls {
		if !IsValidSysctlPattern(string(s)) {
			allErrs = append(
				allErrs,
				field.Invalid(fldPath.Index(i), sysctls[i], fmt.Sprintf("must have at most %d characters and match regex %s",
					apivalidation.SysctlMaxLength,
					SysctlPatternFmt,
				)),
			)
		}
	}

	return allErrs
}