mirror of https://github.com/docker/cli.git
cli: add `--mount` to `docker run`
Signed-off-by: Akihiro Suda <suda.akihiro@lab.ntt.co.jp>
This commit is contained in:
Akihiro Suda
Vincent Demeester
parent
11d7f42b49
commit
3375ba2acd
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@ -0,0 +1,147 @@
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package opts
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import (
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"encoding/csv"
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"fmt"
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"strconv"
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"strings"
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mounttypes "github.com/docker/docker/api/types/mount"
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)
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// MountOpt is a Value type for parsing mounts
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type MountOpt struct {
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values []mounttypes.Mount
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}
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// Set a new mount value
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func (m *MountOpt) Set(value string) error {
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csvReader := csv.NewReader(strings.NewReader(value))
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fields, err := csvReader.Read()
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if err != nil {
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return err
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}
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mount := mounttypes.Mount{}
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volumeOptions := func() *mounttypes.VolumeOptions {
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if mount.VolumeOptions == nil {
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mount.VolumeOptions = &mounttypes.VolumeOptions{
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Labels: make(map[string]string),
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}
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}
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if mount.VolumeOptions.DriverConfig == nil {
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mount.VolumeOptions.DriverConfig = &mounttypes.Driver{}
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}
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return mount.VolumeOptions
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}
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bindOptions := func() *mounttypes.BindOptions {
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if mount.BindOptions == nil {
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mount.BindOptions = new(mounttypes.BindOptions)
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}
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return mount.BindOptions
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}
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setValueOnMap := func(target map[string]string, value string) {
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parts := strings.SplitN(value, "=", 2)
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if len(parts) == 1 {
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target[value] = ""
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} else {
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target[parts[0]] = parts[1]
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}
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}
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mount.Type = mounttypes.TypeVolume // default to volume mounts
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// Set writable as the default
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for _, field := range fields {
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parts := strings.SplitN(field, "=", 2)
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key := strings.ToLower(parts[0])
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if len(parts) == 1 {
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switch key {
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case "readonly", "ro":
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mount.ReadOnly = true
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continue
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case "volume-nocopy":
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volumeOptions().NoCopy = true
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continue
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}
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}
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if len(parts) != 2 {
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return fmt.Errorf("invalid field '%s' must be a key=value pair", field)
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}
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value := parts[1]
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switch key {
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case "type":
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mount.Type = mounttypes.Type(strings.ToLower(value))
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case "source", "src":
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mount.Source = value
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case "target", "dst", "destination":
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mount.Target = value
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case "readonly", "ro":
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mount.ReadOnly, err = strconv.ParseBool(value)
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if err != nil {
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return fmt.Errorf("invalid value for %s: %s", key, value)
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}
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case "bind-propagation":
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bindOptions().Propagation = mounttypes.Propagation(strings.ToLower(value))
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case "volume-nocopy":
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volumeOptions().NoCopy, err = strconv.ParseBool(value)
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if err != nil {
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return fmt.Errorf("invalid value for populate: %s", value)
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}
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case "volume-label":
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setValueOnMap(volumeOptions().Labels, value)
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case "volume-driver":
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volumeOptions().DriverConfig.Name = value
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case "volume-opt":
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if volumeOptions().DriverConfig.Options == nil {
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volumeOptions().DriverConfig.Options = make(map[string]string)
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}
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setValueOnMap(volumeOptions().DriverConfig.Options, value)
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default:
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return fmt.Errorf("unexpected key '%s' in '%s'", key, field)
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}
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}
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if mount.Type == "" {
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return fmt.Errorf("type is required")
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}
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if mount.Target == "" {
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return fmt.Errorf("target is required")
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}
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if mount.Type == mounttypes.TypeBind && mount.VolumeOptions != nil {
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return fmt.Errorf("cannot mix 'volume-*' options with mount type '%s'", mounttypes.TypeBind)
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}
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if mount.Type == mounttypes.TypeVolume && mount.BindOptions != nil {
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return fmt.Errorf("cannot mix 'bind-*' options with mount type '%s'", mounttypes.TypeVolume)
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}
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m.values = append(m.values, mount)
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return nil
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}
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// Type returns the type of this option
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func (m *MountOpt) Type() string {
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return "mount"
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}
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// String returns a string repr of this option
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func (m *MountOpt) String() string {
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mounts := []string{}
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for _, mount := range m.values {
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repr := fmt.Sprintf("%s %s %s", mount.Type, mount.Source, mount.Target)
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mounts = append(mounts, repr)
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}
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return strings.Join(mounts, ", ")
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}
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// Value returns the mounts
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func (m *MountOpt) Value() []mounttypes.Mount {
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return m.values
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}
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@ -0,0 +1,153 @@
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package opts
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import (
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"testing"
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mounttypes "github.com/docker/docker/api/types/mount"
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"github.com/docker/docker/pkg/testutil/assert"
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)
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func TestMountOptString(t *testing.T) {
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mount := MountOpt{
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values: []mounttypes.Mount{
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{
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Type: mounttypes.TypeBind,
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Source: "/home/path",
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Target: "/target",
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},
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{
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Type: mounttypes.TypeVolume,
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Source: "foo",
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Target: "/target/foo",
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},
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},
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}
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expected := "bind /home/path /target, volume foo /target/foo"
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assert.Equal(t, mount.String(), expected)
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}
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func TestMountOptSetBindNoErrorBind(t *testing.T) {
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for _, testcase := range []string{
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// tests several aliases that should have same result.
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"type=bind,target=/target,source=/source",
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"type=bind,src=/source,dst=/target",
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"type=bind,source=/source,dst=/target",
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"type=bind,src=/source,target=/target",
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} {
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var mount MountOpt
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assert.NilError(t, mount.Set(testcase))
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mounts := mount.Value()
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assert.Equal(t, len(mounts), 1)
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assert.Equal(t, mounts[0], mounttypes.Mount{
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Type: mounttypes.TypeBind,
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Source: "/source",
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Target: "/target",
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})
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}
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}
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func TestMountOptSetVolumeNoError(t *testing.T) {
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for _, testcase := range []string{
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// tests several aliases that should have same result.
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"type=volume,target=/target,source=/source",
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"type=volume,src=/source,dst=/target",
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"type=volume,source=/source,dst=/target",
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"type=volume,src=/source,target=/target",
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} {
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var mount MountOpt
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assert.NilError(t, mount.Set(testcase))
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mounts := mount.Value()
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assert.Equal(t, len(mounts), 1)
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assert.Equal(t, mounts[0], mounttypes.Mount{
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Type: mounttypes.TypeVolume,
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Source: "/source",
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Target: "/target",
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})
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}
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}
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// TestMountOptDefaultType ensures that a mount without the type defaults to a
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// volume mount.
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func TestMountOptDefaultType(t *testing.T) {
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var mount MountOpt
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assert.NilError(t, mount.Set("target=/target,source=/foo"))
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assert.Equal(t, mount.values[0].Type, mounttypes.TypeVolume)
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}
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func TestMountOptSetErrorNoTarget(t *testing.T) {
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var mount MountOpt
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assert.Error(t, mount.Set("type=volume,source=/foo"), "target is required")
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}
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func TestMountOptSetErrorInvalidKey(t *testing.T) {
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var mount MountOpt
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assert.Error(t, mount.Set("type=volume,bogus=foo"), "unexpected key 'bogus'")
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}
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func TestMountOptSetErrorInvalidField(t *testing.T) {
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var mount MountOpt
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assert.Error(t, mount.Set("type=volume,bogus"), "invalid field 'bogus'")
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}
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func TestMountOptSetErrorInvalidReadOnly(t *testing.T) {
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var mount MountOpt
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assert.Error(t, mount.Set("type=volume,readonly=no"), "invalid value for readonly: no")
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assert.Error(t, mount.Set("type=volume,readonly=invalid"), "invalid value for readonly: invalid")
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}
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func TestMountOptDefaultEnableReadOnly(t *testing.T) {
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var m MountOpt
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assert.NilError(t, m.Set("type=bind,target=/foo,source=/foo"))
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assert.Equal(t, m.values[0].ReadOnly, false)
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m = MountOpt{}
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assert.NilError(t, m.Set("type=bind,target=/foo,source=/foo,readonly"))
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assert.Equal(t, m.values[0].ReadOnly, true)
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m = MountOpt{}
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assert.NilError(t, m.Set("type=bind,target=/foo,source=/foo,readonly=1"))
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assert.Equal(t, m.values[0].ReadOnly, true)
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m = MountOpt{}
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assert.NilError(t, m.Set("type=bind,target=/foo,source=/foo,readonly=true"))
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assert.Equal(t, m.values[0].ReadOnly, true)
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m = MountOpt{}
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assert.NilError(t, m.Set("type=bind,target=/foo,source=/foo,readonly=0"))
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assert.Equal(t, m.values[0].ReadOnly, false)
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}
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func TestMountOptVolumeNoCopy(t *testing.T) {
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var m MountOpt
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assert.NilError(t, m.Set("type=volume,target=/foo,volume-nocopy"))
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assert.Equal(t, m.values[0].Source, "")
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m = MountOpt{}
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assert.NilError(t, m.Set("type=volume,target=/foo,source=foo"))
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assert.Equal(t, m.values[0].VolumeOptions == nil, true)
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m = MountOpt{}
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assert.NilError(t, m.Set("type=volume,target=/foo,source=foo,volume-nocopy=true"))
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assert.Equal(t, m.values[0].VolumeOptions != nil, true)
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assert.Equal(t, m.values[0].VolumeOptions.NoCopy, true)
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m = MountOpt{}
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assert.NilError(t, m.Set("type=volume,target=/foo,source=foo,volume-nocopy"))
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assert.Equal(t, m.values[0].VolumeOptions != nil, true)
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assert.Equal(t, m.values[0].VolumeOptions.NoCopy, true)
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m = MountOpt{}
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assert.NilError(t, m.Set("type=volume,target=/foo,source=foo,volume-nocopy=1"))
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assert.Equal(t, m.values[0].VolumeOptions != nil, true)
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assert.Equal(t, m.values[0].VolumeOptions.NoCopy, true)
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}
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func TestMountOptTypeConflict(t *testing.T) {
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var m MountOpt
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assert.Error(t, m.Set("type=bind,target=/foo,source=/foo,volume-nocopy=true"), "cannot mix")
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assert.Error(t, m.Set("type=volume,target=/foo,source=/foo,bind-propagation=rprivate"), "cannot mix")
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}
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