forked from docker/libcompose
/
service_create.go
189 lines (158 loc) · 5.55 KB
/
service_create.go
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
package service
import (
"fmt"
"strconv"
"strings"
"golang.org/x/net/context"
"github.com/Sirupsen/logrus"
"github.com/docker/docker/api/types"
containertypes "github.com/docker/docker/api/types/container"
"github.com/docker/libcompose/config"
composecontainer "github.com/docker/libcompose/docker/container"
"github.com/docker/libcompose/labels"
"github.com/docker/libcompose/project"
"github.com/docker/libcompose/project/events"
util "github.com/docker/libcompose/utils"
)
func (s *Service) createContainer(ctx context.Context, namer Namer, oldContainer string, configOverride *config.ServiceConfig, oneOff bool) (*composecontainer.Container, error) {
serviceConfig := s.serviceConfig
if configOverride != nil {
serviceConfig.Command = configOverride.Command
serviceConfig.Tty = configOverride.Tty
serviceConfig.StdinOpen = configOverride.StdinOpen
}
configWrapper, err := ConvertToAPI(serviceConfig, s.context.Context, s.clientFactory)
if err != nil {
return nil, err
}
configWrapper.Config.Image = s.imageName()
containerName, containerNumber := namer.Next()
configWrapper.Config.Labels[labels.SERVICE.Str()] = s.name
configWrapper.Config.Labels[labels.PROJECT.Str()] = s.project.Name
configWrapper.Config.Labels[labels.HASH.Str()] = config.GetServiceHash(s.name, serviceConfig)
configWrapper.Config.Labels[labels.ONEOFF.Str()] = strings.Title(strconv.FormatBool(oneOff))
configWrapper.Config.Labels[labels.NUMBER.Str()] = fmt.Sprintf("%d", containerNumber)
configWrapper.Config.Labels[labels.VERSION.Str()] = project.ComposeVersion
err = s.populateAdditionalHostConfig(configWrapper.HostConfig)
if err != nil {
return nil, err
}
// FIXME(vdemeester): oldContainer should be a Container instead of a string
client := s.clientFactory.Create(s)
if oldContainer != "" {
info, err := client.ContainerInspect(ctx, oldContainer)
if err != nil {
return nil, err
}
configWrapper.HostConfig.Binds = util.Merge(configWrapper.HostConfig.Binds, volumeBinds(configWrapper.Config.Volumes, &info))
}
logrus.Debugf("Creating container %s %#v", containerName, configWrapper)
// FIXME(vdemeester): long-term will be container.Create(…)
container, err := composecontainer.Create(ctx, client, containerName, configWrapper.Config, configWrapper.HostConfig, configWrapper.NetworkingConfig)
if err != nil {
return nil, err
}
s.project.Notify(events.ContainerCreated, s.name, map[string]string{
"name": containerName,
})
return container, nil
}
func (s *Service) populateAdditionalHostConfig(hostConfig *containertypes.HostConfig) error {
links, err := s.getLinks()
if err != nil {
return err
}
for _, link := range s.DependentServices() {
if !s.project.ServiceConfigs.Has(link.Target) {
continue
}
service, err := s.project.CreateService(link.Target)
if err != nil {
return err
}
containers, err := service.Containers(context.Background())
if err != nil {
return err
}
if link.Type == project.RelTypeIpcNamespace {
hostConfig, err = addIpc(hostConfig, service, containers, s.serviceConfig.Ipc)
} else if link.Type == project.RelTypeNetNamespace {
hostConfig, err = addNetNs(hostConfig, service, containers, s.serviceConfig.NetworkMode)
}
if err != nil {
return err
}
}
hostConfig.Links = []string{}
for k, v := range links {
hostConfig.Links = append(hostConfig.Links, strings.Join([]string{v, k}, ":"))
}
for _, v := range s.serviceConfig.ExternalLinks {
hostConfig.Links = append(hostConfig.Links, v)
}
return nil
}
// FIXME(vdemeester) this is temporary
func (s *Service) getLinks() (map[string]string, error) {
links := map[string]string{}
for _, link := range s.DependentServices() {
if !s.project.ServiceConfigs.Has(link.Target) {
continue
}
service, err := s.project.CreateService(link.Target)
if err != nil {
return nil, err
}
// FIXME(vdemeester) container should not know service
containers, err := service.Containers(context.Background())
if err != nil {
return nil, err
}
if link.Type == project.RelTypeLink {
addLinks(links, service, link, containers)
}
if err != nil {
return nil, err
}
}
return links, nil
}
func addLinks(links map[string]string, service project.Service, rel project.ServiceRelationship, containers []project.Container) {
for _, container := range containers {
if _, ok := links[rel.Alias]; !ok {
links[rel.Alias] = container.Name()
}
links[container.Name()] = container.Name()
}
}
func addIpc(config *containertypes.HostConfig, service project.Service, containers []project.Container, ipc string) (*containertypes.HostConfig, error) {
if len(containers) == 0 {
return nil, fmt.Errorf("Failed to find container for IPC %v", ipc)
}
id, err := containers[0].ID()
if err != nil {
return nil, err
}
config.IpcMode = containertypes.IpcMode("container:" + id)
return config, nil
}
func addNetNs(config *containertypes.HostConfig, service project.Service, containers []project.Container, networkMode string) (*containertypes.HostConfig, error) {
if len(containers) == 0 {
return nil, fmt.Errorf("Failed to find container for networks ns %v", networkMode)
}
id, err := containers[0].ID()
if err != nil {
return nil, err
}
config.NetworkMode = containertypes.NetworkMode("container:" + id)
return config, nil
}
func volumeBinds(volumes map[string]struct{}, container *types.ContainerJSON) []string {
result := make([]string, 0, len(container.Mounts))
for _, mount := range container.Mounts {
if _, ok := volumes[mount.Destination]; ok {
result = append(result, fmt.Sprint(mount.Source, ":", mount.Destination))
}
}
return result
}