forked from ehazlett/shipyard
/
utils.go
183 lines (160 loc) · 3.76 KB
/
utils.go
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package citadel
import (
"fmt"
"strconv"
"strings"
"github.com/samalba/dockerclient"
)
type (
ImageInfo struct {
Name string
Tag string
}
)
func parsePortInformation(info *dockerclient.ContainerInfo, c *Container) error {
for pp, b := range info.NetworkSettings.Ports {
parts := strings.Split(pp, "/")
rawPort, proto := parts[0], parts[1]
for _, binding := range b {
port, err := strconv.Atoi(binding.HostPort)
if err != nil {
return err
}
containerPort, err := strconv.Atoi(rawPort)
if err != nil {
return err
}
c.Ports = append(c.Ports, &Port{
HostIp: binding.HostIp,
Proto: proto,
Port: port,
ContainerPort: containerPort,
})
}
}
// if we are running in host network mode look at the exposed ports on the image
// to find out what ports are being exposed
if info.HostConfig.NetworkMode == "host" {
for k := range info.Config.ExposedPorts {
var (
rawPort string
parts = strings.Split(k, "/")
proto = "tcp"
)
switch len(parts) {
case 2:
rawPort, proto = parts[0], parts[1]
default:
rawPort = parts[0]
}
port, err := strconv.Atoi(rawPort)
if err != nil {
return err
}
c.Ports = append(c.Ports, &Port{
Proto: proto,
Port: port,
})
}
}
return nil
}
func FromDockerContainer(id, image string, engine *Engine) (*Container, error) {
info, err := engine.client.InspectContainer(id)
if err != nil {
return nil, err
}
var (
cType = ""
state = "stopped"
networkMode = "bridge"
labels = []string{}
env = make(map[string]string)
)
for _, e := range info.Config.Env {
vals := strings.SplitN(e, "=", 2)
k, v := vals[0], vals[1]
switch k {
case "_citadel_type":
cType = v
case "_citadel_labels":
labels = strings.Split(v, ",")
case "HOME", "DEBIAN_FRONTEND", "PATH":
continue
default:
env[k] = v
}
}
if info.State.Running {
state = "running"
}
if m := info.HostConfig.NetworkMode; m != "" {
networkMode = m
}
volDefs := info.Config.Volumes
vols := []string{}
for k, _ := range volDefs {
vols = append(vols, k)
}
container := &Container{
ID: id,
Engine: engine,
Name: info.Name,
State: state,
Image: &Image{
Name: image,
Cpus: float64(info.Config.CpuShares) / 100.0 * engine.Cpus,
Cpuset: info.Config.Cpuset,
Memory: float64(info.Config.Memory / 1024 / 1024),
Volumes: vols,
Environment: env,
Entrypoint: info.Config.Entrypoint,
Hostname: info.Config.Hostname,
Domainname: info.Config.Domainname,
Type: cType,
Labels: labels,
NetworkMode: networkMode,
Publish: info.HostConfig.PublishAllPorts,
Privileged: info.HostConfig.Privileged,
RestartPolicy: RestartPolicy{
Name: info.HostConfig.RestartPolicy.Name,
MaximumRetryCount: info.HostConfig.RestartPolicy.MaximumRetryCount,
},
},
}
if err := parsePortInformation(info, container); err != nil {
return nil, err
}
container.Image.BindPorts = container.Ports
return container, nil
}
func ParseImageName(name string) *ImageInfo {
imageInfo := &ImageInfo{
Name: name,
Tag: "latest",
}
// image type (top-level / user)
switch {
case strings.Index(name, "/") == -1:
if strings.Index(name, ":") != -1 {
parts := strings.Split(name, ":")
imageInfo.Name = parts[0]
imageInfo.Tag = parts[1]
}
case strings.Index(name, "/") != -1:
parts := strings.Split(name, "/")
n := strings.Join(parts[:len(parts)-1], "/")
t := parts[len(parts)-1]
if strings.Index(t, ":") != -1 {
tparts := strings.Split(t, ":")
n = fmt.Sprintf("%s/%s", n, tparts[0])
t = tparts[1]
} else {
n = name
t = "latest"
}
imageInfo.Name = n
imageInfo.Tag = t
}
return imageInfo
}