aboutsummaryrefslogtreecommitdiff
path: root/pkg/domain/infra/abi/network.go
blob: c7b12663c40289425d91f3edf2c5011f192d9789 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
package abi

import (
	"context"

	"github.com/containers/podman/v3/libpod/define"
	"github.com/containers/podman/v3/libpod/network/types"
	netutil "github.com/containers/podman/v3/libpod/network/util"
	"github.com/containers/podman/v3/pkg/domain/entities"
	"github.com/containers/podman/v3/pkg/util"
	"github.com/pkg/errors"
)

func (ic *ContainerEngine) NetworkList(ctx context.Context, options entities.NetworkListOptions) ([]types.Network, error) {
	filters, err := netutil.GenerateNetworkFilters(options.Filters)
	if err != nil {
		return nil, err
	}
	nets, err := ic.Libpod.Network().NetworkList(filters...)
	return nets, err
}

func (ic *ContainerEngine) NetworkInspect(ctx context.Context, namesOrIds []string, options entities.InspectOptions) ([]types.Network, []error, error) {
	var errs []error
	networks := make([]types.Network, 0, len(namesOrIds))
	for _, name := range namesOrIds {
		net, err := ic.Libpod.Network().NetworkInspect(name)
		if err != nil {
			if errors.Cause(err) == define.ErrNoSuchNetwork {
				errs = append(errs, errors.Wrapf(err, "network %s", name))
				continue
			} else {
				return nil, nil, errors.Wrapf(err, "error inspecting network %s", name)
			}
		}
		networks = append(networks, net)
	}
	return networks, errs, nil
}

func (ic *ContainerEngine) NetworkReload(ctx context.Context, names []string, options entities.NetworkReloadOptions) ([]*entities.NetworkReloadReport, error) {
	ctrs, err := getContainersByContext(options.All, options.Latest, names, ic.Libpod)
	if err != nil {
		return nil, err
	}

	reports := make([]*entities.NetworkReloadReport, 0, len(ctrs))
	for _, ctr := range ctrs {
		report := new(entities.NetworkReloadReport)
		report.Id = ctr.ID()
		report.Err = ctr.ReloadNetwork()
		// ignore errors for invalid ctr state and network mode when --all is used
		if options.All && (errors.Cause(report.Err) == define.ErrCtrStateInvalid ||
			errors.Cause(report.Err) == define.ErrNetworkModeInvalid) {
			continue
		}
		reports = append(reports, report)
	}

	return reports, nil
}

func (ic *ContainerEngine) NetworkRm(ctx context.Context, namesOrIds []string, options entities.NetworkRmOptions) ([]*entities.NetworkRmReport, error) {
	reports := make([]*entities.NetworkRmReport, 0, len(namesOrIds))

	for _, name := range namesOrIds {
		report := entities.NetworkRmReport{Name: name}
		containers, err := ic.Libpod.GetAllContainers()
		if err != nil {
			return reports, err
		}
		// We need to iterate containers looking to see if they belong to the given network
		for _, c := range containers {
			networks, err := c.Networks()
			// if container vanished or network does not exist, go to next container
			if errors.Is(err, define.ErrNoSuchNetwork) || errors.Is(err, define.ErrNoSuchCtr) {
				continue
			}
			if err != nil {
				return reports, err
			}
			if util.StringInSlice(name, networks) {
				// if user passes force, we nuke containers and pods
				if !options.Force {
					// Without the force option, we return an error
					return reports, errors.Wrapf(define.ErrNetworkInUse, "%q has associated containers with it. Use -f to forcibly delete containers and pods", name)
				}
				if c.IsInfra() {
					// if we have a infra container we need to remove the pod
					pod, err := ic.Libpod.GetPod(c.PodID())
					if err != nil {
						return reports, err
					}
					if err := ic.Libpod.RemovePod(ctx, pod, true, true, options.Timeout); err != nil {
						return reports, err
					}
				} else if err := ic.Libpod.RemoveContainer(ctx, c, true, true, options.Timeout); err != nil && errors.Cause(err) != define.ErrNoSuchCtr {
					return reports, err
				}
			}
		}
		if err := ic.Libpod.Network().NetworkRemove(name); err != nil {
			report.Err = err
		}
		reports = append(reports, &report)
	}
	return reports, nil
}

func (ic *ContainerEngine) NetworkCreate(ctx context.Context, network types.Network) (*types.Network, error) {
	if util.StringInSlice(network.Name, []string{"none", "host", "bridge", "private", "slirp4netns", "container", "ns"}) {
		return nil, errors.Errorf("cannot create network with name %q because it conflicts with a valid network mode", network.Name)
	}
	network, err := ic.Libpod.Network().NetworkCreate(network)
	if err != nil {
		return nil, err
	}
	return &network, nil
}

// NetworkDisconnect removes a container from a given network
func (ic *ContainerEngine) NetworkDisconnect(ctx context.Context, networkname string, options entities.NetworkDisconnectOptions) error {
	return ic.Libpod.DisconnectContainerFromNetwork(options.Container, networkname, options.Force)
}

func (ic *ContainerEngine) NetworkConnect(ctx context.Context, networkname string, options entities.NetworkConnectOptions) error {
	return ic.Libpod.ConnectContainerToNetwork(options.Container, networkname, options.PerNetworkOptions)
}

// NetworkExists checks if the given network exists
func (ic *ContainerEngine) NetworkExists(ctx context.Context, networkname string) (*entities.BoolReport, error) {
	_, err := ic.Libpod.Network().NetworkInspect(networkname)
	exists := true
	// if err is ErrNoSuchNetwork do not return it
	if errors.Is(err, define.ErrNoSuchNetwork) {
		exists = false
	} else if err != nil {
		return nil, err
	}
	return &entities.BoolReport{
		Value: exists,
	}, nil
}

// Network prune removes unused cni networks
func (ic *ContainerEngine) NetworkPrune(ctx context.Context, options entities.NetworkPruneOptions) ([]*entities.NetworkPruneReport, error) {
	cons, err := ic.Libpod.GetAllContainers()
	if err != nil {
		return nil, err
	}
	// Gather up all the non-default networks that the
	// containers want
	networksToKeep := make(map[string]bool)
	for _, c := range cons {
		nets, err := c.Networks()
		if err != nil {
			return nil, err
		}
		for _, n := range nets {
			networksToKeep[n] = true
		}
	}
	// ignore the default network, this one cannot be deleted
	networksToKeep[ic.Libpod.GetDefaultNetworkName()] = true

	// get all filters
	filters, err := netutil.GenerateNetworkPruneFilters(options.Filters)
	if err != nil {
		return nil, err
	}
	danglingFilterFunc := func(net types.Network) bool {
		for network := range networksToKeep {
			if network == net.Name {
				return false
			}
		}
		return true
	}
	filters = append(filters, danglingFilterFunc)
	nets, err := ic.Libpod.Network().NetworkList(filters...)
	if err != nil {
		return nil, err
	}

	pruneReport := make([]*entities.NetworkPruneReport, 0, len(nets))
	for _, net := range nets {
		pruneReport = append(pruneReport, &entities.NetworkPruneReport{
			Name:  net.Name,
			Error: ic.Libpod.Network().NetworkRemove(net.Name),
		})
	}
	return pruneReport, nil
}