summaryrefslogtreecommitdiff
path: root/pkg/api/handlers/compat/networks.go
blob: 8734ba4059278a8451d6cdd79001e684a2b43154 (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
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
package compat

import (
	"encoding/json"
	"net"
	"net/http"
	"os"
	"syscall"
	"time"

	"github.com/containernetworking/cni/libcni"
	"github.com/containers/libpod/libpod"
	"github.com/containers/libpod/pkg/api/handlers/utils"
	"github.com/containers/libpod/pkg/domain/entities"
	"github.com/containers/libpod/pkg/domain/infra/abi"
	"github.com/containers/libpod/pkg/network"
	"github.com/docker/docker/api/types"
	dockerNetwork "github.com/docker/docker/api/types/network"
	"github.com/gorilla/schema"
	"github.com/pkg/errors"
)

func InspectNetwork(w http.ResponseWriter, r *http.Request) {
	runtime := r.Context().Value("runtime").(*libpod.Runtime)

	// FYI scope and version are currently unused but are described by the API
	// Leaving this for if/when we have to enable these
	//query := struct {
	//	scope   string
	//	verbose bool
	//}{
	//	// override any golang type defaults
	//}
	//decoder := r.Context().Value("decoder").(*schema.Decoder)
	//if err := decoder.Decode(&query, r.URL.Query()); err != nil {
	//	utils.Error(w, "Something went wrong.", http.StatusBadRequest, errors.Wrapf(err, "Failed to parse parameters for %s", r.URL.String()))
	//	return
	//}
	config, err := runtime.GetConfig()
	if err != nil {
		utils.InternalServerError(w, err)
		return
	}
	name := utils.GetName(r)
	_, err = network.InspectNetwork(config, name)
	if err != nil {
		// TODO our network package does not distinguish between not finding a
		// specific network vs not being able to read it
		utils.InternalServerError(w, err)
		return
	}
	report, err := getNetworkResourceByName(name, runtime)
	if err != nil {
		utils.InternalServerError(w, err)
		return
	}
	utils.WriteResponse(w, http.StatusOK, report)
}

func getNetworkResourceByName(name string, runtime *libpod.Runtime) (*types.NetworkResource, error) {
	var (
		ipamConfigs []dockerNetwork.IPAMConfig
	)
	config, err := runtime.GetConfig()
	if err != nil {
		return nil, err
	}
	containerEndpoints := map[string]types.EndpointResource{}
	// Get the network path so we can get created time
	networkConfigPath, err := network.GetCNIConfigPathByName(config, name)
	if err != nil {
		return nil, err
	}
	f, err := os.Stat(networkConfigPath)
	if err != nil {
		return nil, err
	}
	stat := f.Sys().(*syscall.Stat_t)
	cons, err := runtime.GetAllContainers()
	if err != nil {
		return nil, err
	}
	conf, err := libcni.ConfListFromFile(networkConfigPath)
	if err != nil {
		return nil, err
	}

	// No Bridge plugin means we bail
	bridge, err := genericPluginsToBridge(conf.Plugins, network.DefaultNetworkDriver)
	if err != nil {
		return nil, err
	}
	for _, outer := range bridge.IPAM.Ranges {
		for _, n := range outer {
			ipamConfig := dockerNetwork.IPAMConfig{
				Subnet:  n.Subnet,
				Gateway: n.Gateway,
			}
			ipamConfigs = append(ipamConfigs, ipamConfig)
		}
	}

	for _, con := range cons {
		data, err := con.Inspect(false)
		if err != nil {
			return nil, err
		}
		if netData, ok := data.NetworkSettings.Networks[name]; ok {
			containerEndpoint := types.EndpointResource{
				Name:        netData.NetworkID,
				EndpointID:  netData.EndpointID,
				MacAddress:  netData.MacAddress,
				IPv4Address: netData.IPAddress,
				IPv6Address: netData.GlobalIPv6Address,
			}
			containerEndpoints[con.ID()] = containerEndpoint
		}
	}
	report := types.NetworkResource{
		Name:       name,
		ID:         "",
		Created:    time.Unix(int64(stat.Ctim.Sec), int64(stat.Ctim.Nsec)), // nolint: unconvert
		Scope:      "",
		Driver:     network.DefaultNetworkDriver,
		EnableIPv6: false,
		IPAM: dockerNetwork.IPAM{
			Driver:  "default",
			Options: nil,
			Config:  ipamConfigs,
		},
		Internal:   false,
		Attachable: false,
		Ingress:    false,
		ConfigFrom: dockerNetwork.ConfigReference{},
		ConfigOnly: false,
		Containers: containerEndpoints,
		Options:    nil,
		Labels:     nil,
		Peers:      nil,
		Services:   nil,
	}
	return &report, nil
}

func genericPluginsToBridge(plugins []*libcni.NetworkConfig, pluginType string) (network.HostLocalBridge, error) {
	var bridge network.HostLocalBridge
	generic, err := findPluginByName(plugins, pluginType)
	if err != nil {
		return bridge, err
	}
	err = json.Unmarshal(generic, &bridge)
	return bridge, err
}

func findPluginByName(plugins []*libcni.NetworkConfig, pluginType string) ([]byte, error) {
	for _, p := range plugins {
		if pluginType == p.Network.Type {
			return p.Bytes, nil
		}
	}
	return nil, errors.New("unable to find bridge plugin")
}

func ListNetworks(w http.ResponseWriter, r *http.Request) {
	var (
		reports []*types.NetworkResource
	)
	runtime := r.Context().Value("runtime").(*libpod.Runtime)
	decoder := r.Context().Value("decoder").(*schema.Decoder)
	query := struct {
		Filters map[string][]string `schema:"filters"`
	}{
		// override any golang type defaults
	}
	if err := decoder.Decode(&query, r.URL.Query()); err != nil {
		utils.Error(w, "Something went wrong.", http.StatusBadRequest, errors.Wrapf(err, "Failed to parse parameters for %s", r.URL.String()))
		return
	}
	config, err := runtime.GetConfig()
	if err != nil {
		utils.InternalServerError(w, err)
		return
	}
	// TODO remove when filters are implemented
	if len(query.Filters) > 0 {
		utils.InternalServerError(w, errors.New("filters for listing networks is not implemented"))
		return
	}
	netNames, err := network.GetNetworkNamesFromFileSystem(config)
	if err != nil {
		utils.InternalServerError(w, err)
		return
	}
	for _, name := range netNames {
		report, err := getNetworkResourceByName(name, runtime)
		if err != nil {
			utils.InternalServerError(w, err)
		}
		reports = append(reports, report)
	}
	utils.WriteResponse(w, http.StatusOK, reports)
}

func CreateNetwork(w http.ResponseWriter, r *http.Request) {
	var (
		name          string
		networkCreate types.NetworkCreateRequest
	)
	runtime := r.Context().Value("runtime").(*libpod.Runtime)
	if err := json.NewDecoder(r.Body).Decode(&networkCreate); err != nil {
		utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "Decode()"))
		return
	}

	if len(networkCreate.Name) > 0 {
		name = networkCreate.Name
	}
	// At present I think we should just suport the bridge driver
	// and allow demand to make us consider more
	if networkCreate.Driver != network.DefaultNetworkDriver {
		utils.InternalServerError(w, errors.New("network create only supports the bridge driver"))
		return
	}
	ncOptions := entities.NetworkCreateOptions{
		Driver:   network.DefaultNetworkDriver,
		Internal: networkCreate.Internal,
	}
	if networkCreate.IPAM != nil && networkCreate.IPAM.Config != nil {
		if len(networkCreate.IPAM.Config) > 1 {
			utils.InternalServerError(w, errors.New("compat network create can only support one IPAM config"))
			return
		}

		if len(networkCreate.IPAM.Config[0].Subnet) > 0 {
			_, subnet, err := net.ParseCIDR(networkCreate.IPAM.Config[0].Subnet)
			if err != nil {
				utils.InternalServerError(w, err)
				return
			}
			ncOptions.Subnet = *subnet
		}
		if len(networkCreate.IPAM.Config[0].Gateway) > 0 {
			ncOptions.Gateway = net.ParseIP(networkCreate.IPAM.Config[0].Gateway)
		}
		if len(networkCreate.IPAM.Config[0].IPRange) > 0 {
			_, IPRange, err := net.ParseCIDR(networkCreate.IPAM.Config[0].IPRange)
			if err != nil {
				utils.InternalServerError(w, err)
				return
			}
			ncOptions.Range = *IPRange
		}
	}
	ce := abi.ContainerEngine{Libpod: runtime}
	_, err := ce.NetworkCreate(r.Context(), name, ncOptions)
	if err != nil {
		utils.InternalServerError(w, err)
	}
	report := types.NetworkCreate{
		CheckDuplicate: networkCreate.CheckDuplicate,
		Driver:         networkCreate.Driver,
		Scope:          networkCreate.Scope,
		EnableIPv6:     networkCreate.EnableIPv6,
		IPAM:           networkCreate.IPAM,
		Internal:       networkCreate.Internal,
		Attachable:     networkCreate.Attachable,
		Ingress:        networkCreate.Ingress,
		ConfigOnly:     networkCreate.ConfigOnly,
		ConfigFrom:     networkCreate.ConfigFrom,
		Options:        networkCreate.Options,
		Labels:         networkCreate.Labels,
	}
	utils.WriteResponse(w, http.StatusOK, report)
}

func RemoveNetwork(w http.ResponseWriter, r *http.Request) {
	runtime := r.Context().Value("runtime").(*libpod.Runtime)
	config, err := runtime.GetConfig()
	if err != nil {
		utils.InternalServerError(w, err)
		return
	}
	name := utils.GetName(r)
	exists, err := network.Exists(config, name)
	if err != nil {
		utils.InternalServerError(w, err)
		return
	}
	if !exists {
		utils.Error(w, "network not found", http.StatusNotFound, err)
		return
	}
	if err := network.RemoveNetwork(config, name); err != nil {
		utils.InternalServerError(w, err)
	}
	utils.WriteResponse(w, http.StatusNoContent, "")
}