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protect.go
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protect.go
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package environment
import (
"context"
"testing"
"github.com/docker/docker/api/types"
"github.com/docker/docker/api/types/filters"
"github.com/docker/docker/api/types/volume"
"github.com/docker/docker/errdefs"
"go.opentelemetry.io/otel"
"gotest.tools/v3/assert"
)
var frozenImages = []string{"busybox:latest", "busybox:glibc", "hello-world:frozen", "debian:bullseye-slim"}
type protectedElements struct {
containers map[string]struct{}
images map[string]struct{}
networks map[string]struct{}
plugins map[string]struct{}
volumes map[string]struct{}
}
func newProtectedElements() protectedElements {
return protectedElements{
containers: map[string]struct{}{},
images: map[string]struct{}{},
networks: map[string]struct{}{},
plugins: map[string]struct{}{},
volumes: map[string]struct{}{},
}
}
// ProtectAll protects the existing environment (containers, images, networks,
// volumes, and, on Linux, plugins) from being cleaned up at the end of test
// runs
func ProtectAll(ctx context.Context, t testing.TB, testEnv *Execution) {
t.Helper()
ctx, span := otel.Tracer("").Start(ctx, "ProtectAll")
defer span.End()
ProtectContainers(ctx, t, testEnv)
ProtectImages(ctx, t, testEnv)
ProtectNetworks(ctx, t, testEnv)
ProtectVolumes(ctx, t, testEnv)
if testEnv.DaemonInfo.OSType == "linux" {
ProtectPlugins(ctx, t, testEnv)
}
}
// ProtectContainer adds the specified container(s) to be protected in case of
// clean
func (e *Execution) ProtectContainer(t testing.TB, containers ...string) {
t.Helper()
for _, container := range containers {
e.protectedElements.containers[container] = struct{}{}
}
}
// ProtectContainers protects existing containers from being cleaned up at the
// end of test runs
func ProtectContainers(ctx context.Context, t testing.TB, testEnv *Execution) {
t.Helper()
containers := getExistingContainers(ctx, t, testEnv)
testEnv.ProtectContainer(t, containers...)
}
func getExistingContainers(ctx context.Context, t testing.TB, testEnv *Execution) []string {
t.Helper()
client := testEnv.APIClient()
containerList, err := client.ContainerList(ctx, types.ContainerListOptions{
All: true,
})
assert.NilError(t, err, "failed to list containers")
var containers []string
for _, container := range containerList {
containers = append(containers, container.ID)
}
return containers
}
// ProtectImage adds the specified image(s) to be protected in case of clean
func (e *Execution) ProtectImage(t testing.TB, images ...string) {
t.Helper()
for _, image := range images {
e.protectedElements.images[image] = struct{}{}
}
}
// ProtectImages protects existing images and on linux frozen images from being
// cleaned up at the end of test runs
func ProtectImages(ctx context.Context, t testing.TB, testEnv *Execution) {
t.Helper()
images := getExistingImages(ctx, t, testEnv)
if testEnv.DaemonInfo.OSType == "linux" {
images = append(images, frozenImages...)
}
testEnv.ProtectImage(t, images...)
testEnv.ProtectImage(t, DanglingImageIdGraphDriver, DanglingImageIdSnapshotter)
}
func getExistingImages(ctx context.Context, t testing.TB, testEnv *Execution) []string {
t.Helper()
client := testEnv.APIClient()
imageList, err := client.ImageList(ctx, types.ImageListOptions{
All: true,
Filters: filters.NewArgs(filters.Arg("dangling", "false")),
})
assert.NilError(t, err, "failed to list images")
var images []string
for _, image := range imageList {
images = append(images, tagsFromImageSummary(image)...)
}
return images
}
func tagsFromImageSummary(image types.ImageSummary) []string {
var result []string
for _, tag := range image.RepoTags {
// Starting from API 1.43 no longer outputs the hardcoded <none>
// strings. But since the tests might be ran against a remote
// daemon/pre 1.43 CLI we must still be able to handle it.
if tag != "<none>:<none>" {
result = append(result, tag)
}
}
for _, digest := range image.RepoDigests {
if digest != "<none>@<none>" {
result = append(result, digest)
}
}
return result
}
// ProtectNetwork adds the specified network(s) to be protected in case of
// clean
func (e *Execution) ProtectNetwork(t testing.TB, networks ...string) {
t.Helper()
for _, network := range networks {
e.protectedElements.networks[network] = struct{}{}
}
}
// ProtectNetworks protects existing networks from being cleaned up at the end
// of test runs
func ProtectNetworks(ctx context.Context, t testing.TB, testEnv *Execution) {
t.Helper()
networks := getExistingNetworks(ctx, t, testEnv)
testEnv.ProtectNetwork(t, networks...)
}
func getExistingNetworks(ctx context.Context, t testing.TB, testEnv *Execution) []string {
t.Helper()
client := testEnv.APIClient()
networkList, err := client.NetworkList(ctx, types.NetworkListOptions{})
assert.NilError(t, err, "failed to list networks")
var networks []string
for _, network := range networkList {
networks = append(networks, network.ID)
}
return networks
}
// ProtectPlugin adds the specified plugin(s) to be protected in case of clean
func (e *Execution) ProtectPlugin(t testing.TB, plugins ...string) {
t.Helper()
for _, plugin := range plugins {
e.protectedElements.plugins[plugin] = struct{}{}
}
}
// ProtectPlugins protects existing plugins from being cleaned up at the end of
// test runs
func ProtectPlugins(ctx context.Context, t testing.TB, testEnv *Execution) {
t.Helper()
plugins := getExistingPlugins(ctx, t, testEnv)
testEnv.ProtectPlugin(t, plugins...)
}
func getExistingPlugins(ctx context.Context, t testing.TB, testEnv *Execution) []string {
t.Helper()
client := testEnv.APIClient()
pluginList, err := client.PluginList(ctx, filters.Args{})
// Docker EE does not allow cluster-wide plugin management.
if errdefs.IsNotImplemented(err) {
return []string{}
}
assert.NilError(t, err, "failed to list plugins")
var plugins []string
for _, plugin := range pluginList {
plugins = append(plugins, plugin.Name)
}
return plugins
}
// ProtectVolume adds the specified volume(s) to be protected in case of clean
func (e *Execution) ProtectVolume(t testing.TB, volumes ...string) {
t.Helper()
for _, vol := range volumes {
e.protectedElements.volumes[vol] = struct{}{}
}
}
// ProtectVolumes protects existing volumes from being cleaned up at the end of
// test runs
func ProtectVolumes(ctx context.Context, t testing.TB, testEnv *Execution) {
t.Helper()
volumes := getExistingVolumes(ctx, t, testEnv)
testEnv.ProtectVolume(t, volumes...)
}
func getExistingVolumes(ctx context.Context, t testing.TB, testEnv *Execution) []string {
t.Helper()
client := testEnv.APIClient()
volumeList, err := client.VolumeList(ctx, volume.ListOptions{})
assert.NilError(t, err, "failed to list volumes")
var volumes []string
for _, vol := range volumeList.Volumes {
volumes = append(volumes, vol.Name)
}
return volumes
}