66 lines
1.9 KiB
Go
66 lines
1.9 KiB
Go
/*
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Copyright 2021 The Flux authors
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package repository
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import (
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"fmt"
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"strings"
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helmreg "helm.sh/helm/v3/pkg/registry"
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)
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const (
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alias = "@"
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)
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var (
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// errInvalidDepURL is returned when the dependency URL is not supported
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errInvalidDepURL = fmt.Errorf("invalid dependency repository URL")
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// errInvalidAliasedDep is returned when the dependency URL is an alias
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errInvalidAliasedDep = fmt.Errorf("aliased repository dependency is not supported")
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)
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// NormalizeURL normalizes a ChartRepository URL by its scheme.
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func NormalizeURL(repositoryURL string) string {
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if repositoryURL == "" {
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return ""
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}
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if strings.Contains(repositoryURL, helmreg.OCIScheme) {
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return strings.TrimRight(repositoryURL, "/")
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}
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return strings.TrimRight(repositoryURL, "/") + "/"
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}
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// ValidateDepURL returns an error if the given depended repository URL declaration is not supported
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// The reason for this is that the dependency manager will not be able to resolve the alias declaration
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// e.g. repository: "@fantastic-charts"
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func ValidateDepURL(repositoryURL string) error {
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switch {
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case strings.HasPrefix(repositoryURL, helmreg.OCIScheme):
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return nil
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case strings.HasPrefix(repositoryURL, "https://") || strings.HasPrefix(repositoryURL, "http://"):
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return nil
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case strings.HasPrefix(repositoryURL, alias):
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return fmt.Errorf("%w: %s", errInvalidAliasedDep, repositoryURL)
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default:
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return fmt.Errorf("%w: %s", errInvalidDepURL, repositoryURL)
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}
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}
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