Golang Path.Child方法代碼示例

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 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 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 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
}

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
}

// 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
}

// 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 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
}

// 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
}

// 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
}

// validatePSPSupplementalGroup validates the SupplementalGroupsStrategyOptions fields of the PodSecurityPolicy.
func validatePSPSupplementalGroup(fldPath *field.Path, groupOptions *extensions.SupplementalGroupsStrategyOptions) field.ErrorList {
	allErrs := field.ErrorList{}

	supportedRules := sets.NewString(
		string(extensions.SupplementalGroupsStrategyRunAsAny),
		string(extensions.SupplementalGroupsStrategyMustRunAs),
	)
	if !supportedRules.Has(string(groupOptions.Rule)) {
		allErrs = append(allErrs, field.NotSupported(fldPath.Child("rule"), groupOptions.Rule, supportedRules.List()))
	}

	for idx, rng := range groupOptions.Ranges {
		allErrs = append(allErrs, validateIDRanges(fldPath.Child("ranges").Index(idx), rng)...)
	}
	return allErrs
}

func ValidateJobSpec(spec *batch.JobSpec, fldPath *field.Path) field.ErrorList {
	allErrs := validateJobSpec(spec, fldPath)

	if spec.Selector == nil {
		allErrs = append(allErrs, field.Required(fldPath.Child("selector"), ""))
	} else {
		allErrs = append(allErrs, unversionedvalidation.ValidateLabelSelector(spec.Selector, fldPath.Child("selector"))...)
	}

	// Whether manually or automatically generated, the selector of the job must match the pods it will produce.
	if selector, err := metav1.LabelSelectorAsSelector(spec.Selector); err == nil {
		labels := labels.Set(spec.Template.Labels)
		if !selector.Matches(labels) {
			allErrs = append(allErrs, field.Invalid(fldPath.Child("template", "metadata", "labels"), spec.Template.Labels, "`selector` does not match template `labels`"))
		}
	}
	return allErrs
}

// validatePSPRunAsUser validates the RunAsUser fields of PodSecurityPolicy.
func validatePSPRunAsUser(fldPath *field.Path, runAsUser *extensions.RunAsUserStrategyOptions) field.ErrorList {
	allErrs := field.ErrorList{}

	// ensure the user strategy has a valid rule
	supportedRunAsUserRules := sets.NewString(string(extensions.RunAsUserStrategyMustRunAs),
		string(extensions.RunAsUserStrategyMustRunAsNonRoot),
		string(extensions.RunAsUserStrategyRunAsAny))
	if !supportedRunAsUserRules.Has(string(runAsUser.Rule)) {
		allErrs = append(allErrs, field.NotSupported(fldPath.Child("rule"), runAsUser.Rule, supportedRunAsUserRules.List()))
	}

	// validate range settings
	for idx, rng := range runAsUser.Ranges {
		allErrs = append(allErrs, validateIDRanges(fldPath.Child("ranges").Index(idx), rng)...)
	}

	return allErrs
}

func validateHorizontalPodAutoscalerSpec(autoscaler autoscaling.HorizontalPodAutoscalerSpec, fldPath *field.Path) field.ErrorList {
	allErrs := field.ErrorList{}
	if autoscaler.MinReplicas != nil && *autoscaler.MinReplicas < 1 {
		allErrs = append(allErrs, field.Invalid(fldPath.Child("minReplicas"), *autoscaler.MinReplicas, "must be greater than 0"))
	}
	if autoscaler.MaxReplicas < 1 {
		allErrs = append(allErrs, field.Invalid(fldPath.Child("maxReplicas"), autoscaler.MaxReplicas, "must be greater than 0"))
	}
	if autoscaler.MinReplicas != nil && autoscaler.MaxReplicas < *autoscaler.MinReplicas {
		allErrs = append(allErrs, field.Invalid(fldPath.Child("maxReplicas"), autoscaler.MaxReplicas, "must be greater than or equal to `minReplicas`"))
	}
	if autoscaler.TargetCPUUtilizationPercentage != nil && *autoscaler.TargetCPUUtilizationPercentage < 1 {
		allErrs = append(allErrs, field.Invalid(fldPath.Child("targetCPUUtilizationPercentage"), autoscaler.TargetCPUUtilizationPercentage, "must be greater than 0"))
	}
	if refErrs := ValidateCrossVersionObjectReference(autoscaler.ScaleTargetRef, fldPath.Child("scaleTargetRef")); len(refErrs) > 0 {
		allErrs = append(allErrs, refErrs...)
	}
	return allErrs
}