mirror of https://github.com/helm/helm
Joe Lanford
5 years ago
parent
68ee30b48c
commit
8a4b70b1e3
@ -0,0 +1,117 @@
|
||||
/*
|
||||
Copyright The Helm 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 values
|
||||
|
||||
import (
|
||||
"io/ioutil"
|
||||
"net/url"
|
||||
"os"
|
||||
"strings"
|
||||
|
||||
"github.com/pkg/errors"
|
||||
"sigs.k8s.io/yaml"
|
||||
|
||||
"helm.sh/helm/pkg/cli"
|
||||
"helm.sh/helm/pkg/getter"
|
||||
"helm.sh/helm/pkg/strvals"
|
||||
)
|
||||
|
||||
type Options struct {
|
||||
ValueFiles []string
|
||||
StringValues []string
|
||||
Values []string
|
||||
}
|
||||
|
||||
// MergeValues merges values from files specified via -f/--values and
|
||||
// directly via --set or --set-string, marshaling them to YAML
|
||||
func (opts *Options) MergeValues(settings cli.EnvSettings) (map[string]interface{}, error) {
|
||||
base := map[string]interface{}{}
|
||||
|
||||
// User specified a values files via -f/--values
|
||||
for _, filePath := range opts.ValueFiles {
|
||||
currentMap := map[string]interface{}{}
|
||||
|
||||
bytes, err := readFile(filePath, settings)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
if err := yaml.Unmarshal(bytes, ¤tMap); err != nil {
|
||||
return nil, errors.Wrapf(err, "failed to parse %s", filePath)
|
||||
}
|
||||
// Merge with the previous map
|
||||
base = mergeMaps(base, currentMap)
|
||||
}
|
||||
|
||||
// User specified a value via --set
|
||||
for _, value := range opts.Values {
|
||||
if err := strvals.ParseInto(value, base); err != nil {
|
||||
return nil, errors.Wrap(err, "failed parsing --set data")
|
||||
}
|
||||
}
|
||||
|
||||
// User specified a value via --set-string
|
||||
for _, value := range opts.StringValues {
|
||||
if err := strvals.ParseIntoString(value, base); err != nil {
|
||||
return nil, errors.Wrap(err, "failed parsing --set-string data")
|
||||
}
|
||||
}
|
||||
|
||||
return base, nil
|
||||
}
|
||||
|
||||
func mergeMaps(a, b map[string]interface{}) map[string]interface{} {
|
||||
out := make(map[string]interface{}, len(a))
|
||||
for k, v := range a {
|
||||
out[k] = v
|
||||
}
|
||||
for k, v := range b {
|
||||
if v, ok := v.(map[string]interface{}); ok {
|
||||
if bv, ok := out[k]; ok {
|
||||
if bv, ok := bv.(map[string]interface{}); ok {
|
||||
out[k] = mergeMaps(bv, v)
|
||||
continue
|
||||
}
|
||||
}
|
||||
}
|
||||
out[k] = v
|
||||
}
|
||||
return out
|
||||
}
|
||||
|
||||
// readFile load a file from stdin, the local directory, or a remote file with a url.
|
||||
func readFile(filePath string, settings cli.EnvSettings) ([]byte, error) {
|
||||
if strings.TrimSpace(filePath) == "-" {
|
||||
return ioutil.ReadAll(os.Stdin)
|
||||
}
|
||||
u, _ := url.Parse(filePath)
|
||||
p := getter.All(settings)
|
||||
|
||||
// FIXME: maybe someone handle other protocols like ftp.
|
||||
getterConstructor, err := p.ByScheme(u.Scheme)
|
||||
|
||||
if err != nil {
|
||||
return ioutil.ReadFile(filePath)
|
||||
}
|
||||
|
||||
getter, err := getterConstructor(getter.WithURL(filePath))
|
||||
if err != nil {
|
||||
return []byte{}, err
|
||||
}
|
||||
data, err := getter.Get(filePath)
|
||||
return data.Bytes(), err
|
||||
}
|
||||
Loading…
Reference in new issue