mirror of
https://github.com/NVIDIA/nvidia-container-toolkit
synced 2024-11-28 06:52:34 +00:00
131 lines
3.2 KiB
Go
131 lines
3.2 KiB
Go
/**
|
|
# Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License");
|
|
# you may not use this file except in compliance with the License.
|
|
# You may obtain a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
# See the License for the specific language governing permissions and
|
|
# limitations under the License.
|
|
**/
|
|
|
|
package constraints
|
|
|
|
import (
|
|
"fmt"
|
|
"strings"
|
|
|
|
"golang.org/x/mod/semver"
|
|
)
|
|
|
|
// Property represents a property that is used to check requirements
|
|
//
|
|
//go:generate moq -stub -out property_mock.go . Property
|
|
type Property interface {
|
|
Name() string
|
|
Value() (string, error)
|
|
String() string
|
|
CompareTo(string) (int, error)
|
|
Validate(string) error
|
|
}
|
|
|
|
// NewStringProperty creates a string property based on the name-value pair
|
|
func NewStringProperty(name string, value string) Property {
|
|
p := stringProperty{
|
|
name: name,
|
|
value: value,
|
|
}
|
|
|
|
return p
|
|
}
|
|
|
|
// NewVersionProperty creates a property representing a semantic version based on the name-value pair
|
|
func NewVersionProperty(name string, value string) Property {
|
|
p := versionProperty{
|
|
stringProperty: stringProperty{
|
|
name: name,
|
|
value: value,
|
|
},
|
|
}
|
|
|
|
return p
|
|
}
|
|
|
|
// stringProperty represents a property that is used to check requirements
|
|
type stringProperty struct {
|
|
name string
|
|
value string
|
|
}
|
|
|
|
type versionProperty struct {
|
|
stringProperty
|
|
}
|
|
|
|
// Name returns a stringProperty's name
|
|
func (p stringProperty) Name() string {
|
|
return p.name
|
|
}
|
|
|
|
// Value returns a stringProperty's value or an error if this cannot be determined
|
|
func (p stringProperty) Value() (string, error) {
|
|
return p.value, nil
|
|
}
|
|
|
|
// CompareTo compares two strings to each other
|
|
func (p stringProperty) CompareTo(other string) (int, error) {
|
|
value := p.value
|
|
|
|
if value < other {
|
|
return -1, nil
|
|
}
|
|
|
|
if value > other {
|
|
return 1, nil
|
|
}
|
|
|
|
return 0, nil
|
|
}
|
|
|
|
// Validate returns nil for all input strings
|
|
func (p stringProperty) Validate(string) error {
|
|
return nil
|
|
}
|
|
|
|
// String returns the string representation of the name value combination
|
|
func (p stringProperty) String() string {
|
|
v, err := p.Value()
|
|
if err != nil {
|
|
return fmt.Sprintf("invalid %v: %v", p.name, err)
|
|
}
|
|
return fmt.Sprintf("%v=%v", p.name, v)
|
|
}
|
|
|
|
// CompareTo compares two versions to each other as semantic versions
|
|
func (p versionProperty) CompareTo(other string) (int, error) {
|
|
if err := p.Validate(other); err != nil {
|
|
return 0, fmt.Errorf("invailid value for %v: %v", p.name, err)
|
|
}
|
|
|
|
vValue := ensurePrefix(p.value, "v")
|
|
vOther := ensurePrefix(other, "v")
|
|
return semver.Compare(vValue, vOther), nil
|
|
}
|
|
|
|
// Validate checks whether the supplied value is a valid semantic version
|
|
func (p versionProperty) Validate(value string) error {
|
|
if !semver.IsValid(ensurePrefix(value, "v")) {
|
|
return fmt.Errorf("invailid value %v; expected a valid version string", value)
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func ensurePrefix(s string, prefix string) string {
|
|
return prefix + strings.TrimPrefix(s, prefix)
|
|
}
|