Files
helmfile/helmexec/exec.go
T
Justin Nauman 2e914c652a Relative path resolution changes
This aims to improve on relative, absolute and <repo>/<chart>
resolution for several of Helmfile manifest attributes as well as
command line arguments.

- Uusers may now utilize the `-f <filepath>` flag to reference
a helmfile manifest outside of their PWD and have relative paths
in the the `charts[*].values` and `charts[*].chart` attribute resolve
relative to the manfiest's location properly

- Values provided in the `--values` argument are no longer automatically
assumed as relative path references from PWD but instead are
conditionally joined with the PWD if it is determined they are relative
file paths

- Users may still signify a chart in the `.charts[*].chart` attribute
as they do now by having an explicit `<repo>/<chart>` value
2017-09-06 23:03:37 -05:00

95 lines
1.9 KiB
Go

package helmexec
import (
"fmt"
"io"
"io/ioutil"
"os"
"os/exec"
"strings"
)
const (
command = "helm"
)
type execer struct {
writer io.Writer
kubeContext string
extra []string
}
func NewHelmExec(writer io.Writer, kubeContext string) Interface {
return &execer{
writer: writer,
kubeContext: kubeContext,
}
}
func (helm *execer) SetExtraArgs(args ...string) {
helm.extra = args
}
func (helm *execer) AddRepo(name, repository string) error {
out, err := helm.exec("repo", "add", name, repository)
if helm.writer != nil {
helm.writer.Write(out)
}
return err
}
func (helm *execer) UpdateRepo() error {
out, err := helm.exec("repo", "update")
if helm.writer != nil {
helm.writer.Write(out)
}
return err
}
func (helm *execer) SyncChart(name, chart string, flags ...string) error {
out, err := helm.exec(append([]string{"upgrade", "--install", name, chart}, flags...)...)
if helm.writer != nil {
helm.writer.Write(out)
}
return err
}
func (helm *execer) DiffChart(name, chart string, flags ...string) error {
out, err := helm.exec(append([]string{"diff", name, chart}, flags...)...)
if helm.writer != nil {
helm.writer.Write(out)
}
return err
}
func (helm *execer) DeleteChart(name string) error {
out, err := helm.exec("delete", name)
if helm.writer != nil {
helm.writer.Write(out)
}
return err
}
func (helm *execer) exec(args ...string) ([]byte, error) {
dir, err := ioutil.TempDir("", "helmfile-exec")
if err != nil {
return nil, err
}
defer os.RemoveAll(dir)
cmdargs := args
if len(helm.extra) > 0 {
cmdargs = append(cmdargs, helm.extra...)
}
if helm.kubeContext != "" {
cmdargs = append(cmdargs, "--kube-context", helm.kubeContext)
}
if helm.writer != nil {
helm.writer.Write([]byte(fmt.Sprintf("exec: helm %s\n", strings.Join(cmdargs, " "))))
}
cmd := exec.Command(command, cmdargs...)
cmd.Dir = dir
return cmd.CombinedOutput()
}