3a055cc2f5
This was done by running the following command twice: ```bash grep -Ri "github.com/jetstack/cert-manager" . | \ cut -d":" -f1 | \ sort | \ uniq | \ xargs sed -i "s/github.com\/jetstack\/cert-manager/github.com\/cert-manager\/cert-manager/" ``` Signed-off-by: Ashley Davis <ashley.davis@jetstack.io>
125 lines
3.4 KiB
Go
125 lines
3.4 KiB
Go
/*
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Copyright 2021 The cert-manager 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 configfile
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import (
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"fmt"
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"io/ioutil"
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"path/filepath"
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"k8s.io/apimachinery/pkg/runtime/serializer"
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config "github.com/cert-manager/cert-manager/internal/apis/config/webhook"
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"github.com/cert-manager/cert-manager/internal/apis/config/webhook/scheme"
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)
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// Filesystem is an interface used to mock out calls to ReadFile
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type Filesystem interface {
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ReadFile(filename string) ([]byte, error)
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}
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type realFS struct{}
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func (fs realFS) ReadFile(filename string) ([]byte, error) {
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return ioutil.ReadFile(filename)
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}
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// NewRealFS builds a Filesystem that wraps around `ioutil.ReadFile`.
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func NewRealFS() Filesystem {
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return realFS{}
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}
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type Loader interface {
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Load() (*config.WebhookConfiguration, error)
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}
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type fsLoader struct {
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fs Filesystem
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filename string
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codec *serializer.CodecFactory
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}
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var _ Loader = &fsLoader{}
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func (f *fsLoader) Load() (*config.WebhookConfiguration, error) {
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data, err := f.fs.ReadFile(f.filename)
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if err != nil {
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return nil, fmt.Errorf("failed to read webhook config file %q, error: %v", f.filename, err)
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}
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if len(data) == 0 {
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return nil, fmt.Errorf("webhook config file %q was empty", f.filename)
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}
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cfg, err := decodeWebhookConfiguration(f.codec, data)
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if err != nil {
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return nil, err
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}
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// make all paths absolute
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resolveRelativePaths(webhookConfigurationPathRefs(cfg), filepath.Dir(f.filename))
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return cfg, nil
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}
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func NewFSLoader(fs Filesystem, name string) (Loader, error) {
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_, webhookCodec, err := scheme.NewSchemeAndCodecs(serializer.EnableStrict)
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if err != nil {
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return nil, err
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}
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return &fsLoader{
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fs: fs,
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filename: name,
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codec: webhookCodec,
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}, nil
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}
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func resolveRelativePaths(paths []*string, root string) {
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for _, path := range paths {
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// leave empty paths alone, "no path" is a valid input
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// do not attempt to resolve paths that are already absolute
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if len(*path) > 0 && !filepath.IsAbs(*path) {
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*path = filepath.Join(root, *path)
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}
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}
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}
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func decodeWebhookConfiguration(codec *serializer.CodecFactory, data []byte) (*config.WebhookConfiguration, error) {
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obj, gvk, err := codec.UniversalDecoder().Decode(data, nil, nil)
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if err != nil {
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return nil, fmt.Errorf("failed to decode: %w", err)
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}
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internalObj, ok := obj.(*config.WebhookConfiguration)
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if !ok {
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return nil, fmt.Errorf("failed to cast object to WebhookConfiguration, unexpected type: %v", gvk)
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}
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return internalObj, nil
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}
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// webhookConfigurationPathRefs returns pointers to all the WebhookConfiguration fields that contain filepaths.
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// You might use this, for example, to resolve all relative paths against some common root before
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// passing the configuration to the application. This method must be kept up to date as new fields are added.
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func webhookConfigurationPathRefs(cfg *config.WebhookConfiguration) []*string {
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return []*string{
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&cfg.TLSConfig.Filesystem.KeyFile,
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&cfg.TLSConfig.Filesystem.CertFile,
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&cfg.KubeConfig,
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}
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}
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