mirror of https://github.com/helm/helm
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
111 lines
3.0 KiB
111 lines
3.0 KiB
/*
|
|
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 getter
|
|
|
|
import (
|
|
"bytes"
|
|
"fmt"
|
|
"os"
|
|
"os/exec"
|
|
"path/filepath"
|
|
"strings"
|
|
|
|
"github.com/pkg/errors"
|
|
|
|
"helm.sh/helm/v3/pkg/cli"
|
|
"helm.sh/helm/v3/pkg/plugin"
|
|
)
|
|
|
|
// collectPlugins scans for getter plugins.
|
|
// This will load plugins according to the cli.
|
|
func collectPlugins(settings *cli.EnvSettings) (Providers, error) {
|
|
plugins, err := plugin.FindPlugins(settings.PluginsDirectory)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
var result Providers
|
|
for _, plugin := range plugins {
|
|
for _, downloader := range plugin.Metadata.Downloaders {
|
|
result = append(result, Provider{
|
|
Schemes: downloader.Protocols,
|
|
New: NewPluginGetter(
|
|
downloader.Command,
|
|
settings,
|
|
plugin.Metadata.Name,
|
|
plugin.Dir,
|
|
),
|
|
})
|
|
}
|
|
}
|
|
return result, nil
|
|
}
|
|
|
|
// pluginGetter is a generic type to invoke custom downloaders,
|
|
// implemented in plugins.
|
|
type pluginGetter struct {
|
|
command string
|
|
settings *cli.EnvSettings
|
|
name string
|
|
base string
|
|
opts options
|
|
}
|
|
|
|
func (p *pluginGetter) setupOptionsEnv(env []string) []string {
|
|
env = append(env, fmt.Sprintf("HELM_PLUGIN_USERNAME=%s", p.opts.username))
|
|
env = append(env, fmt.Sprintf("HELM_PLUGIN_PASSWORD=%s", p.opts.password))
|
|
env = append(env, fmt.Sprintf("HELM_PLUGIN_PASS_CREDENTIALS_ALL=%t", p.opts.passCredentialsAll))
|
|
return env
|
|
}
|
|
|
|
// Get runs downloader plugin command
|
|
func (p *pluginGetter) Get(href string, options ...Option) (*bytes.Buffer, error) {
|
|
for _, opt := range options {
|
|
opt(&p.opts)
|
|
}
|
|
commands := strings.Split(p.command, " ")
|
|
argv := append(commands[1:], p.opts.certFile, p.opts.keyFile, p.opts.caFile, href)
|
|
prog := exec.Command(filepath.Join(p.base, commands[0]), argv...)
|
|
plugin.SetupPluginEnv(p.settings, p.name, p.base)
|
|
prog.Env = p.setupOptionsEnv(os.Environ())
|
|
buf := bytes.NewBuffer(nil)
|
|
prog.Stdout = buf
|
|
prog.Stderr = os.Stderr
|
|
if err := prog.Run(); err != nil {
|
|
if eerr, ok := err.(*exec.ExitError); ok {
|
|
os.Stderr.Write(eerr.Stderr)
|
|
return nil, errors.Errorf("plugin %q exited with error", p.command)
|
|
}
|
|
return nil, err
|
|
}
|
|
return buf, nil
|
|
}
|
|
|
|
// NewPluginGetter constructs a valid plugin getter
|
|
func NewPluginGetter(command string, settings *cli.EnvSettings, name, base string) Constructor {
|
|
return func(options ...Option) (Getter, error) {
|
|
result := &pluginGetter{
|
|
command: command,
|
|
settings: settings,
|
|
name: name,
|
|
base: base,
|
|
}
|
|
for _, opt := range options {
|
|
opt(&result.opts)
|
|
}
|
|
return result, nil
|
|
}
|
|
}
|