/
docker.go
219 lines (173 loc) · 4.83 KB
/
docker.go
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package farmer
import (
"errors"
"os"
"strconv"
"strings"
"github.com/fsouza/go-dockerclient"
)
var dockerClient *docker.Client
func init() {
dockerClient, _ = docker.NewClient(os.Getenv("FARMER_DOCKER_API"))
}
func dockerCreateContainer(release *Release) error {
options := dockerCreateContainerOptions(release)
dockerEnsureVolumes(options.HostConfig)
container, err := dockerClient.CreateContainer(options)
if err != nil {
return err
}
release.ContainerID = container.ID
return dockerInspectContainer(release)
}
func dockerInspectContainer(release *Release) error {
container, err := dockerClient.InspectContainer(release.ContainerID)
if err != nil {
return err
}
release.Hostname = container.Config.Hostname
release.Image = container.Config.Image
release.IP = container.NetworkSettings.IPAddress
release.Ports = dockerExtractPortBindings(container.NetworkSettings.Ports)
return nil
}
func dockerStartContainer(release *Release) error {
err := dockerClient.StartContainer(
release.ContainerID, dockerCreateContainerOptions(release).HostConfig,
)
if err != nil {
return err
}
return dockerInspectContainer(release)
}
func dockerRunContainer(release *Release) error {
if release.Type != ProductionType {
dockerClient.RemoveContainer(docker.RemoveContainerOptions{
ID: release.containerName(),
RemoveVolumes: false,
Force: true,
})
}
if err := dockerCreateContainer(release); err != nil {
return err
}
if err := dockerStartContainer(release); err != nil {
dockerClient.RemoveContainer(docker.RemoveContainerOptions{
ID: release.ContainerID,
})
return err
}
return nil
}
func dockerExecOnContainer(release *Release, commands []string) error {
exec, err := dockerClient.CreateExec(docker.CreateExecOptions{
Container: release.ContainerID,
AttachStdin: false,
AttachStdout: true,
AttachStderr: true,
Tty: false,
Cmd: commands,
})
if err != nil {
return err
}
err = dockerClient.StartExec(exec.ID, docker.StartExecOptions{
Detach: false,
Tty: false,
OutputStream: release.Box.OutputStream,
ErrorStream: release.Box.ErrorStream,
})
if err != nil {
return err
}
inspectExec, err := dockerClient.InspectExec(exec.ID)
if err != nil {
return err
}
if inspectExec.ExitCode != 0 {
return errors.New("Exited with code " + strconv.Itoa(inspectExec.ExitCode))
}
return nil
}
func dockerRenameContainer(release *Release) error {
return dockerClient.RenameContainer(docker.RenameContainerOptions{
ID: release.ContainerID,
Name: release.containerName(),
})
}
func dockerDeleteContainer(release *Release) error {
return dockerClient.RemoveContainer(docker.RemoveContainerOptions{
ID: release.ContainerID,
RemoveVolumes: false,
Force: true,
})
}
func dockerCreateContainerOptions(release *Release) docker.CreateContainerOptions {
dockerConfig := &docker.Config{
Hostname: release.Box.Name,
Image: release.Image,
ExposedPorts: dockerReversePortBindings(release.Ports),
Env: release.Env,
}
dockerHostConfig := &docker.HostConfig{
Binds: []string{
release.CodeDirectory + ":" + release.Home,
release.ShareDirectory + ":/shared",
},
PublishAllPorts: true,
}
return docker.CreateContainerOptions{
Name: release.containerName(),
Config: dockerConfig,
HostConfig: dockerHostConfig,
}
}
func dockerPullImage(release *Release) error {
repository := strings.Split(release.Image, ":")[0]
tag := "latest"
if s := strings.Split(release.Image, ":"); len(s) > 1 {
tag = s[1]
}
return dockerClient.PullImage(docker.PullImageOptions{
OutputStream: release.Box.OutputStream,
Repository: repository,
Tag: tag,
}, docker.AuthConfiguration{})
}
func dockerCommitContainer(release *Release, tag string) (string, error) {
repoName := "farmer/box/" + release.Box.Name
_, err := dockerClient.CommitContainer(docker.CommitContainerOptions{
Container: release.containerName(),
Repository: repoName,
Tag: tag,
})
if err != nil {
return "", err
}
return repoName + ":" + tag, nil
}
func dockerEnsureVolumes(hostConfig *docker.HostConfig) {
for _, binding := range hostConfig.Binds {
paths := strings.Split(binding, ":")
os.MkdirAll(paths[0], 0777)
}
}
func dockerRemoveImage(image string) error {
return dockerClient.RemoveImage(image)
}
func dockerReversePortBindings(ports []string) map[docker.Port]struct{} {
portBindings := make(map[docker.Port]struct{})
for _, portAndProtocol := range ports {
var pp docker.Port
pp = docker.Port(portAndProtocol)
portBindings[pp] = struct{}{}
}
return portBindings
}
func dockerExtractPortBindings(ports map[docker.Port][]docker.PortBinding) []string {
var portBindings []string
for port, _ := range ports {
portBindings = append(portBindings, string(port))
}
return portBindings
}