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package environment // import "github.com/docker/docker/testutil/environment"
import (
"context"
"regexp"
"strings"
"testing"
"github.com/docker/docker/api/types"
"github.com/docker/docker/api/types/filters"
"github.com/docker/docker/client"
"gotest.tools/v3/assert"
)
// Clean the environment, preserving protected objects (images, containers, ...)
// and removing everything else. It's meant to run after any tests so that they don't
// depend on each others.
func (e *Execution) Clean(t testing.TB) {
t.Helper()
client := e.APIClient()
platform := e.OSType
if (platform != "windows") || (platform == "windows" && e.DaemonInfo.Isolation == "hyperv") {
unpauseAllContainers(t, client)
}
deleteAllContainers(t, client, e.protectedElements.containers)
deleteAllImages(t, client, e.protectedElements.images)
deleteAllVolumes(t, client, e.protectedElements.volumes)
deleteAllNetworks(t, client, platform, e.protectedElements.networks)
if platform == "linux" {
deleteAllPlugins(t, client, e.protectedElements.plugins)
}
}
func unpauseAllContainers(t testing.TB, client client.ContainerAPIClient) {
t.Helper()
ctx := context.Background()
containers := getPausedContainers(ctx, t, client)
if len(containers) > 0 {
for _, container := range containers {
err := client.ContainerUnpause(ctx, container.ID)
assert.Check(t, err, "failed to unpause container %s", container.ID)
}
}
}
func getPausedContainers(ctx context.Context, t testing.TB, client client.ContainerAPIClient) []types.Container {
t.Helper()
filter := filters.NewArgs()
filter.Add("status", "paused")
containers, err := client.ContainerList(ctx, types.ContainerListOptions{
Filters: filter,
Quiet: true,
All: true,
})
assert.Check(t, err, "failed to list containers")
return containers
}
var alreadyExists = regexp.MustCompile(`Error response from daemon: removal of container (\w+) is already in progress`)
func deleteAllContainers(t testing.TB, apiclient client.ContainerAPIClient, protectedContainers map[string]struct{}) {
t.Helper()
ctx := context.Background()
containers := getAllContainers(ctx, t, apiclient)
if len(containers) == 0 {
return
}
for _, container := range containers {
if _, ok := protectedContainers[container.ID]; ok {
continue
}
err := apiclient.ContainerRemove(ctx, container.ID, types.ContainerRemoveOptions{
Force: true,
RemoveVolumes: true,
})
if err == nil || client.IsErrNotFound(err) || alreadyExists.MatchString(err.Error()) || isErrNotFoundSwarmClassic(err) {
continue
}
assert.Check(t, err, "failed to remove %s", container.ID)
}
}
func getAllContainers(ctx context.Context, t testing.TB, client client.ContainerAPIClient) []types.Container {
t.Helper()
containers, err := client.ContainerList(ctx, types.ContainerListOptions{
Quiet: true,
All: true,
})
assert.Check(t, err, "failed to list containers")
return containers
}
func deleteAllImages(t testing.TB, apiclient client.ImageAPIClient, protectedImages map[string]struct{}) {
t.Helper()
images, err := apiclient.ImageList(context.Background(), types.ImageListOptions{})
assert.Check(t, err, "failed to list images")
ctx := context.Background()
for _, image := range images {
tags := tagsFromImageSummary(image)
if len(tags) == 0 {
removeImage(ctx, t, apiclient, image.ID)
continue
}
for _, tag := range tags {
if _, ok := protectedImages[tag]; !ok {
removeImage(ctx, t, apiclient, tag)
}
}
}
}
func removeImage(ctx context.Context, t testing.TB, apiclient client.ImageAPIClient, ref string) {
t.Helper()
_, err := apiclient.ImageRemove(ctx, ref, types.ImageRemoveOptions{
Force: true,
})
if client.IsErrNotFound(err) {
return
}
assert.Check(t, err, "failed to remove image %s", ref)
}
func deleteAllVolumes(t testing.TB, c client.VolumeAPIClient, protectedVolumes map[string]struct{}) {
t.Helper()
volumes, err := c.VolumeList(context.Background(), filters.Args{})
assert.Check(t, err, "failed to list volumes")
for _, v := range volumes.Volumes {
if _, ok := protectedVolumes[v.Name]; ok {
continue
}
err := c.VolumeRemove(context.Background(), v.Name, true)
// Docker EE may list volumes that no longer exist.
if isErrNotFoundSwarmClassic(err) {
continue
}
assert.Check(t, err, "failed to remove volume %s", v.Name)
}
}
func deleteAllNetworks(t testing.TB, c client.NetworkAPIClient, daemonPlatform string, protectedNetworks map[string]struct{}) {
t.Helper()
networks, err := c.NetworkList(context.Background(), types.NetworkListOptions{})
assert.Check(t, err, "failed to list networks")
for _, n := range networks {
if n.Name == "bridge" || n.Name == "none" || n.Name == "host" {
continue
}
if _, ok := protectedNetworks[n.ID]; ok {
continue
}
if daemonPlatform == "windows" && strings.ToLower(n.Name) == "nat" {
// nat is a pre-defined network on Windows and cannot be removed
continue
}
err := c.NetworkRemove(context.Background(), n.ID)
assert.Check(t, err, "failed to remove network %s", n.ID)
}
}
func deleteAllPlugins(t testing.TB, c client.PluginAPIClient, protectedPlugins map[string]struct{}) {
t.Helper()
plugins, err := c.PluginList(context.Background(), filters.Args{})
// Docker EE does not allow cluster-wide plugin management.
if client.IsErrNotImplemented(err) {
return
}
assert.Check(t, err, "failed to list plugins")
for _, p := range plugins {
if _, ok := protectedPlugins[p.Name]; ok {
continue
}
err := c.PluginRemove(context.Background(), p.Name, types.PluginRemoveOptions{Force: true})
assert.Check(t, err, "failed to remove plugin %s", p.ID)
}
}
// Swarm classic aggregates node errors and returns a 500 so we need to check
// the error string instead of just IsErrNotFound().
func isErrNotFoundSwarmClassic(err error) bool {
return err != nil && strings.Contains(strings.ToLower(err.Error()), "no such")
}
|
