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remove.go
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remove.go
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package swarm
import (
"context"
"fmt"
"sort"
"strings"
"github.com/docker/cli/cli/command"
"github.com/docker/cli/cli/command/stack/options"
"github.com/docker/docker/api/types"
"github.com/docker/docker/api/types/swarm"
"github.com/docker/docker/api/types/versions"
apiclient "github.com/docker/docker/client"
"github.com/pkg/errors"
)
// RunRemove is the swarm implementation of docker stack remove
func RunRemove(ctx context.Context, dockerCli command.Cli, opts options.Remove) error {
client := dockerCli.Client()
var errs []string
for _, namespace := range opts.Namespaces {
services, err := getStackServices(ctx, client, namespace)
if err != nil {
return err
}
networks, err := getStackNetworks(ctx, client, namespace)
if err != nil {
return err
}
var secrets []swarm.Secret
if versions.GreaterThanOrEqualTo(client.ClientVersion(), "1.25") {
secrets, err = getStackSecrets(ctx, client, namespace)
if err != nil {
return err
}
}
var configs []swarm.Config
if versions.GreaterThanOrEqualTo(client.ClientVersion(), "1.30") {
configs, err = getStackConfigs(ctx, client, namespace)
if err != nil {
return err
}
}
if len(services)+len(networks)+len(secrets)+len(configs) == 0 {
fmt.Fprintf(dockerCli.Err(), "Nothing found in stack: %s\n", namespace)
continue
}
hasError := removeServices(ctx, dockerCli, services)
hasError = removeSecrets(ctx, dockerCli, secrets) || hasError
hasError = removeConfigs(ctx, dockerCli, configs) || hasError
hasError = removeNetworks(ctx, dockerCli, networks) || hasError
if hasError {
errs = append(errs, fmt.Sprintf("Failed to remove some resources from stack: %s", namespace))
continue
}
if !opts.Detach {
err = waitOnTasks(ctx, client, namespace)
if err != nil {
errs = append(errs, fmt.Sprintf("Failed to wait on tasks of stack: %s: %s", namespace, err))
}
}
}
if len(errs) > 0 {
return errors.Errorf(strings.Join(errs, "\n"))
}
return nil
}
func sortServiceByName(services []swarm.Service) func(i, j int) bool {
return func(i, j int) bool {
return services[i].Spec.Name < services[j].Spec.Name
}
}
func removeServices(
ctx context.Context,
dockerCli command.Cli,
services []swarm.Service,
) bool {
var hasError bool
sort.Slice(services, sortServiceByName(services))
for _, service := range services {
fmt.Fprintf(dockerCli.Out(), "Removing service %s\n", service.Spec.Name)
if err := dockerCli.Client().ServiceRemove(ctx, service.ID); err != nil {
hasError = true
fmt.Fprintf(dockerCli.Err(), "Failed to remove service %s: %s", service.ID, err)
}
}
return hasError
}
func removeNetworks(
ctx context.Context,
dockerCli command.Cli,
networks []types.NetworkResource,
) bool {
var hasError bool
for _, network := range networks {
fmt.Fprintf(dockerCli.Out(), "Removing network %s\n", network.Name)
if err := dockerCli.Client().NetworkRemove(ctx, network.ID); err != nil {
hasError = true
fmt.Fprintf(dockerCli.Err(), "Failed to remove network %s: %s", network.ID, err)
}
}
return hasError
}
func removeSecrets(
ctx context.Context,
dockerCli command.Cli,
secrets []swarm.Secret,
) bool {
var hasError bool
for _, secret := range secrets {
fmt.Fprintf(dockerCli.Out(), "Removing secret %s\n", secret.Spec.Name)
if err := dockerCli.Client().SecretRemove(ctx, secret.ID); err != nil {
hasError = true
fmt.Fprintf(dockerCli.Err(), "Failed to remove secret %s: %s", secret.ID, err)
}
}
return hasError
}
func removeConfigs(
ctx context.Context,
dockerCli command.Cli,
configs []swarm.Config,
) bool {
var hasError bool
for _, config := range configs {
fmt.Fprintf(dockerCli.Out(), "Removing config %s\n", config.Spec.Name)
if err := dockerCli.Client().ConfigRemove(ctx, config.ID); err != nil {
hasError = true
fmt.Fprintf(dockerCli.Err(), "Failed to remove config %s: %s", config.ID, err)
}
}
return hasError
}
var numberedStates = map[swarm.TaskState]int64{
swarm.TaskStateNew: 1,
swarm.TaskStateAllocated: 2,
swarm.TaskStatePending: 3,
swarm.TaskStateAssigned: 4,
swarm.TaskStateAccepted: 5,
swarm.TaskStatePreparing: 6,
swarm.TaskStateReady: 7,
swarm.TaskStateStarting: 8,
swarm.TaskStateRunning: 9,
swarm.TaskStateComplete: 10,
swarm.TaskStateShutdown: 11,
swarm.TaskStateFailed: 12,
swarm.TaskStateRejected: 13,
}
func terminalState(state swarm.TaskState) bool {
return numberedStates[state] > numberedStates[swarm.TaskStateRunning]
}
func waitOnTasks(ctx context.Context, client apiclient.APIClient, namespace string) error {
terminalStatesReached := 0
for {
tasks, err := getStackTasks(ctx, client, namespace)
if err != nil {
return fmt.Errorf("failed to get tasks: %w", err)
}
for _, task := range tasks {
if terminalState(task.Status.State) {
terminalStatesReached++
break
}
}
if terminalStatesReached == len(tasks) {
break
}
}
return nil
}