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Downward API hugepages 

Kubernetes-commit: 45bd6cb186c05eb3a6cdb2cc4927bbcb50a8ff74
This commit is contained in:
Derek Carr 2020-11-06 14:22:53 -05:00 committed by Kubernetes Publisher
parent 2c52ab8913
commit 74ecab5f7e
2 changed files with 48 additions and 2 deletions
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28
pkg/cmd/set/env/env_resolve.go vendored
View File

@ -199,7 +199,20 @@ func extractContainerResourceValue(fs *corev1.ResourceFieldSelector, container *
case "requests.ephemeral-storage":
return convertResourceEphemeralStorageToString(container.Resources.Requests.StorageEphemeral(), divisor)
}
// handle extended standard resources with dynamic names
// example: requests.hugepages-<pageSize> or limits.hugepages-<pageSize>
if strings.HasPrefix(fs.Resource, "requests.") {
resourceName := corev1.ResourceName(strings.TrimPrefix(fs.Resource, "requests."))
if IsHugePageResourceName(resourceName) {
return convertResourceHugePagesToString(container.Resources.Requests.Name(resourceName, resource.BinarySI), divisor)
}
}
if strings.HasPrefix(fs.Resource, "limits.") {
resourceName := corev1.ResourceName(strings.TrimPrefix(fs.Resource, "limits."))
if IsHugePageResourceName(resourceName) {
return convertResourceHugePagesToString(container.Resources.Limits.Name(resourceName, resource.BinarySI), divisor)
}
}
return "", fmt.Errorf("Unsupported container resource : %v", fs.Resource)
}
@ -217,6 +230,13 @@ func convertResourceMemoryToString(memory *resource.Quantity, divisor resource.Q
return strconv.FormatInt(m, 10), nil
}
// convertResourceHugePagesToString converts hugepages value to the format of divisor and returns
// ceiling of the value.
func convertResourceHugePagesToString(hugePages *resource.Quantity, divisor resource.Quantity) (string, error) {
m := int64(math.Ceil(float64(hugePages.Value()) / float64(divisor.Value())))
return strconv.FormatInt(m, 10), nil
}
// convertResourceEphemeralStorageToString converts ephemeral storage value to the format of divisor and returns
// ceiling of the value.
func convertResourceEphemeralStorageToString(ephemeralStorage *resource.Quantity, divisor resource.Quantity) (string, error) {
@ -269,3 +289,9 @@ func GetEnvVarRefString(from *corev1.EnvVarSource) string {
return "invalid valueFrom"
}
// IsHugePageResourceName returns true if the resource name has the huge page
// resource prefix.
func IsHugePageResourceName(name corev1.ResourceName) bool {
return strings.HasPrefix(string(name), corev1.ResourceHugePagesPrefix)
}

22
pkg/util/resource/resource.go
View File

@ -108,7 +108,20 @@ func ExtractContainerResourceValue(fs *corev1.ResourceFieldSelector, container *
case "requests.ephemeral-storage":
return convertResourceEphemeralStorageToString(container.Resources.Requests.StorageEphemeral(), divisor)
}
// handle extended standard resources with dynamic names
// example: requests.hugepages-<pageSize> or limits.hugepages-<pageSize>
if strings.HasPrefix(fs.Resource, "requests.") {
resourceName := corev1.ResourceName(strings.TrimPrefix(fs.Resource, "requests."))
if IsHugePageResourceName(resourceName) {
return convertResourceHugePagesToString(container.Resources.Requests.Name(resourceName, resource.BinarySI), divisor)
}
}
if strings.HasPrefix(fs.Resource, "limits.") {
resourceName := corev1.ResourceName(strings.TrimPrefix(fs.Resource, "limits."))
if IsHugePageResourceName(resourceName) {
return convertResourceHugePagesToString(container.Resources.Limits.Name(resourceName, resource.BinarySI), divisor)
}
}
return "", fmt.Errorf("Unsupported container resource : %v", fs.Resource)
}
@ -126,6 +139,13 @@ func convertResourceMemoryToString(memory *resource.Quantity, divisor resource.Q
return strconv.FormatInt(m, 10), nil
}
// convertResourceHugePagesToString converts hugepages value to the format of divisor and returns
// ceiling of the value.
func convertResourceHugePagesToString(hugePages *resource.Quantity, divisor resource.Quantity) (string, error) {
m := int64(math.Ceil(float64(hugePages.Value()) / float64(divisor.Value())))
return strconv.FormatInt(m, 10), nil
}
// convertResourceEphemeralStorageToString converts ephemeral storage value to the format of divisor and returns
// ceiling of the value.
func convertResourceEphemeralStorageToString(ephemeralStorage *resource.Quantity, divisor resource.Quantity) (string, error) {