1package swarm
2
3import (
4	"context"
5	"fmt"
6	"sort"
7	"strings"
8
9	"github.com/docker/cli/cli/command"
10	"github.com/docker/cli/cli/command/stack/options"
11	"github.com/docker/docker/api/types"
12	"github.com/docker/docker/api/types/swarm"
13	"github.com/docker/docker/api/types/versions"
14	"github.com/pkg/errors"
15)
16
17// RunRemove is the swarm implementation of docker stack remove
18func RunRemove(dockerCli command.Cli, opts options.Remove) error {
19	client := dockerCli.Client()
20	ctx := context.Background()
21
22	var errs []string
23	for _, namespace := range opts.Namespaces {
24		services, err := getStackServices(ctx, client, namespace)
25		if err != nil {
26			return err
27		}
28
29		networks, err := getStackNetworks(ctx, client, namespace)
30		if err != nil {
31			return err
32		}
33
34		var secrets []swarm.Secret
35		if versions.GreaterThanOrEqualTo(client.ClientVersion(), "1.25") {
36			secrets, err = getStackSecrets(ctx, client, namespace)
37			if err != nil {
38				return err
39			}
40		}
41
42		var configs []swarm.Config
43		if versions.GreaterThanOrEqualTo(client.ClientVersion(), "1.30") {
44			configs, err = getStackConfigs(ctx, client, namespace)
45			if err != nil {
46				return err
47			}
48		}
49
50		if len(services)+len(networks)+len(secrets)+len(configs) == 0 {
51			fmt.Fprintf(dockerCli.Err(), "Nothing found in stack: %s\n", namespace)
52			continue
53		}
54
55		hasError := removeServices(ctx, dockerCli, services)
56		hasError = removeSecrets(ctx, dockerCli, secrets) || hasError
57		hasError = removeConfigs(ctx, dockerCli, configs) || hasError
58		hasError = removeNetworks(ctx, dockerCli, networks) || hasError
59
60		if hasError {
61			errs = append(errs, fmt.Sprintf("Failed to remove some resources from stack: %s", namespace))
62		}
63	}
64
65	if len(errs) > 0 {
66		return errors.Errorf(strings.Join(errs, "\n"))
67	}
68	return nil
69}
70
71func sortServiceByName(services []swarm.Service) func(i, j int) bool {
72	return func(i, j int) bool {
73		return services[i].Spec.Name < services[j].Spec.Name
74	}
75}
76
77func removeServices(
78	ctx context.Context,
79	dockerCli command.Cli,
80	services []swarm.Service,
81) bool {
82	var hasError bool
83	sort.Slice(services, sortServiceByName(services))
84	for _, service := range services {
85		fmt.Fprintf(dockerCli.Out(), "Removing service %s\n", service.Spec.Name)
86		if err := dockerCli.Client().ServiceRemove(ctx, service.ID); err != nil {
87			hasError = true
88			fmt.Fprintf(dockerCli.Err(), "Failed to remove service %s: %s", service.ID, err)
89		}
90	}
91	return hasError
92}
93
94func removeNetworks(
95	ctx context.Context,
96	dockerCli command.Cli,
97	networks []types.NetworkResource,
98) bool {
99	var hasError bool
100	for _, network := range networks {
101		fmt.Fprintf(dockerCli.Out(), "Removing network %s\n", network.Name)
102		if err := dockerCli.Client().NetworkRemove(ctx, network.ID); err != nil {
103			hasError = true
104			fmt.Fprintf(dockerCli.Err(), "Failed to remove network %s: %s", network.ID, err)
105		}
106	}
107	return hasError
108}
109
110func removeSecrets(
111	ctx context.Context,
112	dockerCli command.Cli,
113	secrets []swarm.Secret,
114) bool {
115	var hasError bool
116	for _, secret := range secrets {
117		fmt.Fprintf(dockerCli.Out(), "Removing secret %s\n", secret.Spec.Name)
118		if err := dockerCli.Client().SecretRemove(ctx, secret.ID); err != nil {
119			hasError = true
120			fmt.Fprintf(dockerCli.Err(), "Failed to remove secret %s: %s", secret.ID, err)
121		}
122	}
123	return hasError
124}
125
126func removeConfigs(
127	ctx context.Context,
128	dockerCli command.Cli,
129	configs []swarm.Config,
130) bool {
131	var hasError bool
132	for _, config := range configs {
133		fmt.Fprintf(dockerCli.Out(), "Removing config %s\n", config.Spec.Name)
134		if err := dockerCli.Client().ConfigRemove(ctx, config.ID); err != nil {
135			hasError = true
136			fmt.Fprintf(dockerCli.Err(), "Failed to remove config %s: %s", config.ID, err)
137		}
138	}
139	return hasError
140}
141