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git: Use VolumeHost.GetExec() to execute stuff in volume plugins

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This prepares volume plugins to run things in containers instead of running
them on the host.
This commit is contained in:
Jan Safranek
2017-08-31 12:13:59 +02:00
parent 5030391c07
commit c578542ad7
3 changed files with 73 additions and 136 deletions
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22
pkg/volume/git_repo/git_repo.go
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@@ -24,10 +24,10 @@ import (
"k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/types"
"k8s.io/kubernetes/pkg/util/mount"
utilstrings "k8s.io/kubernetes/pkg/util/strings"
"k8s.io/kubernetes/pkg/volume"
volumeutil "k8s.io/kubernetes/pkg/volume/util"
"k8s.io/utils/exec"
)
// This is the primary entrypoint for volume plugins.
@@ -100,7 +100,8 @@ func (plugin *gitRepoPlugin) NewMounter(spec *volume.Spec, pod *v1.Pod, opts vol
source: spec.Volume.GitRepo.Repository,
revision: spec.Volume.GitRepo.Revision,
target: spec.Volume.GitRepo.Directory,
exec: exec.New(),
mounter: plugin.host.GetMounter(plugin.GetPluginName()),
exec: plugin.host.GetExec(plugin.GetPluginName()),
opts: opts,
}, nil
}
@@ -149,7 +150,8 @@ type gitRepoVolumeMounter struct {
source string
revision string
target string
exec exec.Interface
mounter mount.Interface
exec mount.Exec
opts volume.VolumeOptions
}
@@ -195,7 +197,7 @@ func (b *gitRepoVolumeMounter) SetUpAt(dir string, fsGroup *int64) error {
if len(b.target) != 0 {
args = append(args, b.target)
}
if output, err := b.execCommand("git", args, dir); err != nil {
if output, err := b.execGit(args, dir); err != nil {
return fmt.Errorf("failed to exec 'git %s': %s: %v",
strings.Join(args, " "), output, err)
}
@@ -225,10 +227,10 @@ func (b *gitRepoVolumeMounter) SetUpAt(dir string, fsGroup *int64) error {
return fmt.Errorf("unexpected directory contents: %v", files)
}
if output, err := b.execCommand("git", []string{"checkout", b.revision}, subdir); err != nil {
if output, err := b.execGit([]string{"checkout", b.revision}, subdir); err != nil {
return fmt.Errorf("failed to exec 'git checkout %s': %s: %v", b.revision, output, err)
}
if output, err := b.execCommand("git", []string{"reset", "--hard"}, subdir); err != nil {
if output, err := b.execGit([]string{"reset", "--hard"}, subdir); err != nil {
return fmt.Errorf("failed to exec 'git reset --hard': %s: %v", output, err)
}
@@ -242,10 +244,10 @@ func (b *gitRepoVolumeMounter) getMetaDir() string {
return path.Join(b.plugin.host.GetPodPluginDir(b.podUID, utilstrings.EscapeQualifiedNameForDisk(gitRepoPluginName)), b.volName)
}
func (b *gitRepoVolumeMounter) execCommand(command string, args []string, dir string) ([]byte, error) {
cmd := b.exec.Command(command, args...)
cmd.SetDir(dir)
return cmd.CombinedOutput()
func (b *gitRepoVolumeMounter) execGit(args []string, dir string) ([]byte, error) {
// run git -C <dir> <args>
fullArgs := append([]string{"-C", dir}, args...)
return b.exec.Run("git", fullArgs...)
}
// gitRepoVolumeUnmounter cleans git repo volumes.