78 lines
2.4 KiB
Go
78 lines
2.4 KiB
Go
/*
|
|
Copyright 2021 The Flux authors
|
|
|
|
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 repository
|
|
|
|
import (
|
|
"fmt"
|
|
"net/url"
|
|
"strings"
|
|
|
|
helmreg "helm.sh/helm/v3/pkg/registry"
|
|
)
|
|
|
|
const (
|
|
alias = "@"
|
|
)
|
|
|
|
var (
|
|
// errInvalidDepURL is returned when the dependency URL is not supported
|
|
errInvalidDepURL = fmt.Errorf("invalid dependency repository URL")
|
|
// errInvalidAliasedDep is returned when the dependency URL is an alias
|
|
errInvalidAliasedDep = fmt.Errorf("aliased repository dependency is not supported")
|
|
)
|
|
|
|
// NormalizeURL normalizes a ChartRepository URL by its scheme.
|
|
func NormalizeURL(repositoryURL string) (string, error) {
|
|
if repositoryURL == "" {
|
|
return "", nil
|
|
}
|
|
u, err := url.Parse(repositoryURL)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
|
|
if u.Scheme == helmreg.OCIScheme {
|
|
u.Path = strings.TrimRight(u.Path, "/")
|
|
// we perform the same operation on u.RawPath so that it will be a valid encoding
|
|
// of u.Path. This allows u.EscapedPath() (which is used in computing u.String()) to return
|
|
// the correct value when the path is url encoded.
|
|
// ref: https://pkg.go.dev/net/url#URL.EscapedPath
|
|
u.RawPath = strings.TrimRight(u.RawPath, "/")
|
|
return u.String(), nil
|
|
}
|
|
|
|
u.Path = strings.TrimRight(u.Path, "/") + "/"
|
|
u.RawPath = strings.TrimRight(u.RawPath, "/") + "/"
|
|
return u.String(), nil
|
|
}
|
|
|
|
// ValidateDepURL returns an error if the given depended repository URL declaration is not supported
|
|
// The reason for this is that the dependency manager will not be able to resolve the alias declaration
|
|
// e.g. repository: "@fantastic-charts"
|
|
func ValidateDepURL(repositoryURL string) error {
|
|
switch {
|
|
case strings.HasPrefix(repositoryURL, helmreg.OCIScheme):
|
|
return nil
|
|
case strings.HasPrefix(repositoryURL, "https://") || strings.HasPrefix(repositoryURL, "http://"):
|
|
return nil
|
|
case strings.HasPrefix(repositoryURL, alias):
|
|
return fmt.Errorf("%w: %s", errInvalidAliasedDep, repositoryURL)
|
|
default:
|
|
return fmt.Errorf("%w: %s", errInvalidDepURL, repositoryURL)
|
|
}
|
|
}
|