traefik/integration/vendor/github.com/libkermit/docker/create.go
2017-03-09 13:13:03 +01:00

78 lines
2 KiB
Go

package docker
import (
"fmt"
"math/rand"
"golang.org/x/net/context"
"github.com/docker/engine-api/types"
"github.com/docker/engine-api/types/container"
"github.com/docker/engine-api/types/strslice"
)
// Create lets you create a container with the specified image, and default
// configuration.
func (p *Project) Create(image string) (types.ContainerJSON, error) {
return p.CreateWithConfig(image, ContainerConfig{})
}
// CreateWithConfig lets you create a container with the specified image, and
// some custom simple configuration.
func (p *Project) CreateWithConfig(image string, containerConfig ContainerConfig) (types.ContainerJSON, error) {
err := p.ensureImageExists(image, false)
if err != nil {
return types.ContainerJSON{}, err
}
labels := mergeLabels(p.Labels, containerConfig.Labels)
config := &container.Config{
Image: image,
Labels: labels,
}
if len(containerConfig.Entrypoint) > 0 {
config.Entrypoint = strslice.StrSlice(containerConfig.Entrypoint)
}
if len(containerConfig.Cmd) > 0 {
config.Cmd = strslice.StrSlice(containerConfig.Cmd)
}
var containerName string
if containerConfig.Name != "" {
containerName = containerConfig.Name
} else {
containerName = fmt.Sprintf("kermit_%s", randSeq(10))
}
response, err := p.Client.ContainerCreate(context.Background(), config, &container.HostConfig{}, nil, containerName)
if err != nil {
return types.ContainerJSON{}, err
}
return p.Inspect(response.ID)
}
func mergeLabels(defaultLabels, additionnalLabels map[string]string) map[string]string {
labels := make(map[string]string, len(defaultLabels))
if len(additionnalLabels) > 0 {
for key, value := range additionnalLabels {
labels[key] = value
}
}
// default labels overrides additionnals
for key, value := range defaultLabels {
labels[key] = value
}
return labels
}
var letters = []rune("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ")
func randSeq(n int) string {
b := make([]rune, n)
for i := range b {
b[i] = letters[rand.Intn(len(letters))]
}
return string(b)
}