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257 lines
7.5 KiB
Go
257 lines
7.5 KiB
Go
// +build !windows
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package daemon // import "github.com/docker/docker/daemon"
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import (
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"encoding/json"
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"fmt"
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"reflect"
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"testing"
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containertypes "github.com/docker/docker/api/types/container"
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mounttypes "github.com/docker/docker/api/types/mount"
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"github.com/docker/docker/container"
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"github.com/docker/docker/volume"
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)
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func TestBackportMountSpec(t *testing.T) {
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d := Daemon{containers: container.NewMemoryStore()}
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c := &container.Container{
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State: &container.State{},
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MountPoints: map[string]*volume.MountPoint{
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"/apple": {Destination: "/apple", Source: "/var/lib/docker/volumes/12345678", Name: "12345678", RW: true, CopyData: true}, // anonymous volume
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"/banana": {Destination: "/banana", Source: "/var/lib/docker/volumes/data", Name: "data", RW: true, CopyData: true}, // named volume
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"/cherry": {Destination: "/cherry", Source: "/var/lib/docker/volumes/data", Name: "data", CopyData: true}, // RO named volume
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"/dates": {Destination: "/dates", Source: "/var/lib/docker/volumes/data", Name: "data"}, // named volume nocopy
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"/elderberry": {Destination: "/elderberry", Source: "/var/lib/docker/volumes/data", Name: "data"}, // masks anon vol
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"/fig": {Destination: "/fig", Source: "/data", RW: true}, // RW bind
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"/guava": {Destination: "/guava", Source: "/data", RW: false, Propagation: "shared"}, // RO bind + propagation
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"/kumquat": {Destination: "/kumquat", Name: "data", RW: false, CopyData: true}, // volumes-from
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// partially configured mountpoint due to #32613
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// specifically, `mp.Spec.Source` is not set
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"/honeydew": {
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Type: mounttypes.TypeVolume,
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Destination: "/honeydew",
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Name: "data",
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Source: "/var/lib/docker/volumes/data",
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Spec: mounttypes.Mount{Type: mounttypes.TypeVolume, Target: "/honeydew", VolumeOptions: &mounttypes.VolumeOptions{NoCopy: true}},
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},
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// from hostconfig.Mounts
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"/jambolan": {
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Type: mounttypes.TypeVolume,
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Destination: "/jambolan",
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Source: "/var/lib/docker/volumes/data",
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RW: true,
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Name: "data",
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Spec: mounttypes.Mount{Type: mounttypes.TypeVolume, Target: "/jambolan", Source: "data"},
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},
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},
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HostConfig: &containertypes.HostConfig{
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Binds: []string{
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"data:/banana",
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"data:/cherry:ro",
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"data:/dates:ro,nocopy",
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"data:/elderberry:ro,nocopy",
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"/data:/fig",
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"/data:/guava:ro,shared",
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"data:/honeydew:nocopy",
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},
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VolumesFrom: []string{"1:ro"},
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Mounts: []mounttypes.Mount{
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{Type: mounttypes.TypeVolume, Target: "/jambolan"},
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},
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},
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Config: &containertypes.Config{Volumes: map[string]struct{}{
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"/apple": {},
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"/elderberry": {},
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}},
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}
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d.containers.Add("1", &container.Container{
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State: &container.State{},
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ID: "1",
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MountPoints: map[string]*volume.MountPoint{
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"/kumquat": {Destination: "/kumquat", Name: "data", RW: false, CopyData: true},
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},
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HostConfig: &containertypes.HostConfig{
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Binds: []string{
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"data:/kumquat:ro",
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},
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},
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})
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type expected struct {
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mp *volume.MountPoint
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comment string
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}
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pretty := func(mp *volume.MountPoint) string {
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b, err := json.MarshalIndent(mp, "\t", " ")
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if err != nil {
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return fmt.Sprintf("%#v", mp)
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}
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return string(b)
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}
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for _, x := range []expected{
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{
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mp: &volume.MountPoint{
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Type: mounttypes.TypeVolume,
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Destination: "/apple",
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RW: true,
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Name: "12345678",
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Source: "/var/lib/docker/volumes/12345678",
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CopyData: true,
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Spec: mounttypes.Mount{
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Type: mounttypes.TypeVolume,
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Source: "",
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Target: "/apple",
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},
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},
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comment: "anonymous volume",
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},
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{
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mp: &volume.MountPoint{
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Type: mounttypes.TypeVolume,
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Destination: "/banana",
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RW: true,
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Name: "data",
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Source: "/var/lib/docker/volumes/data",
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CopyData: true,
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Spec: mounttypes.Mount{
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Type: mounttypes.TypeVolume,
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Source: "data",
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Target: "/banana",
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},
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},
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comment: "named volume",
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},
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{
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mp: &volume.MountPoint{
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Type: mounttypes.TypeVolume,
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Destination: "/cherry",
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Name: "data",
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Source: "/var/lib/docker/volumes/data",
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CopyData: true,
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Spec: mounttypes.Mount{
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Type: mounttypes.TypeVolume,
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Source: "data",
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Target: "/cherry",
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ReadOnly: true,
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},
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},
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comment: "read-only named volume",
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},
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{
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mp: &volume.MountPoint{
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Type: mounttypes.TypeVolume,
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Destination: "/dates",
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Name: "data",
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Source: "/var/lib/docker/volumes/data",
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Spec: mounttypes.Mount{
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Type: mounttypes.TypeVolume,
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Source: "data",
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Target: "/dates",
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ReadOnly: true,
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VolumeOptions: &mounttypes.VolumeOptions{NoCopy: true},
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},
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},
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comment: "named volume with nocopy",
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},
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{
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mp: &volume.MountPoint{
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Type: mounttypes.TypeVolume,
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Destination: "/elderberry",
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Name: "data",
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Source: "/var/lib/docker/volumes/data",
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Spec: mounttypes.Mount{
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Type: mounttypes.TypeVolume,
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Source: "data",
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Target: "/elderberry",
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ReadOnly: true,
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VolumeOptions: &mounttypes.VolumeOptions{NoCopy: true},
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},
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},
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comment: "masks an anonymous volume",
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},
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{
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mp: &volume.MountPoint{
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Type: mounttypes.TypeBind,
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Destination: "/fig",
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Source: "/data",
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RW: true,
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Spec: mounttypes.Mount{
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Type: mounttypes.TypeBind,
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Source: "/data",
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Target: "/fig",
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},
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},
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comment: "bind mount with read/write",
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},
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{
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mp: &volume.MountPoint{
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Type: mounttypes.TypeBind,
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Destination: "/guava",
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Source: "/data",
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RW: false,
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Propagation: "shared",
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Spec: mounttypes.Mount{
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Type: mounttypes.TypeBind,
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Source: "/data",
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Target: "/guava",
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ReadOnly: true,
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BindOptions: &mounttypes.BindOptions{Propagation: "shared"},
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},
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},
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comment: "bind mount with read/write + shared propagation",
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},
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{
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mp: &volume.MountPoint{
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Type: mounttypes.TypeVolume,
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Destination: "/honeydew",
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Source: "/var/lib/docker/volumes/data",
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RW: true,
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Propagation: "shared",
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Spec: mounttypes.Mount{
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Type: mounttypes.TypeVolume,
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Source: "data",
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Target: "/honeydew",
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VolumeOptions: &mounttypes.VolumeOptions{NoCopy: true},
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},
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},
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comment: "partially configured named volume caused by #32613",
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},
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{
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mp: &(*c.MountPoints["/jambolan"]), // copy the mountpoint, expect no changes
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comment: "volume defined in mounts API",
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},
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{
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mp: &volume.MountPoint{
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Type: mounttypes.TypeVolume,
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Destination: "/kumquat",
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Source: "/var/lib/docker/volumes/data",
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RW: false,
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Name: "data",
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Spec: mounttypes.Mount{
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Type: mounttypes.TypeVolume,
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Source: "data",
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Target: "/kumquat",
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ReadOnly: true,
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},
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},
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comment: "partially configured named volume caused by #32613",
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},
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} {
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mp := c.MountPoints[x.mp.Destination]
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d.backportMountSpec(c)
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if !reflect.DeepEqual(mp.Spec, x.mp.Spec) {
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t.Fatalf("%s\nexpected:\n\t%s\n\ngot:\n\t%s", x.comment, pretty(x.mp), pretty(mp))
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}
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}
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}
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