// RunDaemon creates the docker container, pulling images if necessary, starts
// the container and returns the container information. It does not wait for
// the container to exit.
func RunDaemon(client dockerclient.Client, conf *dockerclient.ContainerConfig, name string) (*dockerclient.ContainerInfo, error) {
// attempts to create the contianer
id, err := client.CreateContainer(conf, name)
if err != nil {
// and pull the image and re-create if that fails
err = client.PullImage(conf.Image, nil)
if err != nil {
return nil, err
}
id, err = client.CreateContainer(conf, name)
if err != nil {
client.RemoveContainer(id, true, true)
return nil, err
}
}
// fetches the container information
info, err := client.InspectContainer(id)
if err != nil {
client.RemoveContainer(id, true, true)
return nil, err
}
// starts the container
err = client.StartContainer(id, &conf.HostConfig)
if err != nil {
client.RemoveContainer(id, true, true)
return nil, err
}
return info, err
}
func PullImage(client dockerclient.Client, service *Service, image string) error {
taglessRemote, tag := parsers.ParseRepositoryTag(image)
if tag == "" {
image = utils.ImageReference(taglessRemote, tags.DEFAULTTAG)
}
repoInfo, err := registry.ParseRepositoryInfo(taglessRemote)
if err != nil {
return err
}
authConfig := cliconfig.AuthConfig{}
if service.context.ConfigFile != nil && repoInfo != nil && repoInfo.Index != nil {
authConfig = registry.ResolveAuthConfig(service.context.ConfigFile, repoInfo.Index)
}
err = client.PullImage(image, &dockerclient.AuthConfig{
Username: authConfig.Username,
Password: authConfig.Password,
Email: authConfig.Email,
})
if err != nil {
logrus.Errorf("Failed to pull image %s: %v", image, err)
}
return err
}
func Start(client dockerclient.Client, conf *dockerclient.ContainerConfig, auth *dockerclient.AuthConfig, pull bool) (*dockerclient.ContainerInfo, error) {
// force-pull the image if specified.
if pull {
log.Printf("Pulling image %s", conf.Image)
client.PullImage(conf.Image, auth)
}
// attempts to create the contianer
id, err := client.CreateContainer(conf, "", auth)
if err != nil {
log.Printf("Pulling image %s", conf.Image)
// and pull the image and re-create if that fails
err = client.PullImage(conf.Image, auth)
if err != nil {
log.Errorf("Error pulling %s. %s\n", conf.Image, err)
return nil, err
}
id, err = client.CreateContainer(conf, "", auth)
if err != nil {
log.Errorf("Error creating %s. %s\n", conf.Image, err)
client.RemoveContainer(id, true, true)
return nil, err
}
}
// fetches the container information
info, err := client.InspectContainer(id)
if err != nil {
log.Errorf("Error inspecting %s. %s\n", conf.Image, err)
client.RemoveContainer(id, true, true)
return nil, err
}
// starts the container
err = client.StartContainer(id, &conf.HostConfig)
if err != nil {
log.Errorf("Error starting %s. %s\n", conf.Image, err)
}
return info, err
}
// ImageID returns the image ID for the given image name. If the imageName is
// not known, it will also attempt to pull the image as well.
func ImageID(d dockerclient.Client, imageName string, auth *dockerclient.AuthConfig) (string, error) {
id, err := imageIDFromList(d, imageName)
if err != nil {
return "", err
}
if id != "" {
return id, nil
}
if err := d.PullImage(imageName, auth); err != nil {
return "", stackerr.Wrap(err)
}
id, err = imageIDFromList(d, imageName)
if err != nil {
return "", err
}
if id != "" {
return id, nil
}
return "", stackerr.Newf("image named %q could not be identified", imageName)
}
func (e *engine) runJob(c context.Context, r *Task, updater *updater, client dockerclient.Client) error {
name := fmt.Sprintf("drone_build_%d_job_%d", r.Build.ID, r.Job.ID)
defer func() {
if r.Job.Status == model.StatusRunning {
r.Job.Status = model.StatusError
r.Job.Finished = time.Now().UTC().Unix()
r.Job.ExitCode = 255
}
if r.Job.Status == model.StatusPending {
r.Job.Status = model.StatusError
r.Job.Started = time.Now().UTC().Unix()
r.Job.Finished = time.Now().UTC().Unix()
r.Job.ExitCode = 255
}
updater.SetJob(c, r)
client.KillContainer(name, "9")
client.RemoveContainer(name, true, true)
}()
// marks the task as running
r.Job.Status = model.StatusRunning
r.Job.Started = time.Now().UTC().Unix()
// encode the build payload to write to stdin
// when launching the build container
in, err := encodeToLegacyFormat(r)
if err != nil {
log.Errorf("failure to marshal work. %s", err)
return err
}
// CREATE AND START BUILD
args := DefaultBuildArgs
if r.Build.Event == model.EventPull {
args = DefaultPullRequestArgs
}
args = append(args, "--")
args = append(args, string(in))
conf := &dockerclient.ContainerConfig{
Image: DefaultAgent,
Entrypoint: DefaultEntrypoint,
Cmd: args,
Env: e.envs,
HostConfig: dockerclient.HostConfig{
Binds: []string{"/var/run/docker.sock:/var/run/docker.sock"},
},
Volumes: map[string]struct{}{
"/var/run/docker.sock": struct{}{},
},
}
log.Infof("preparing container %s", name)
client.PullImage(conf.Image, nil)
_, err = docker.RunDaemon(client, conf, name)
if err != nil {
log.Errorf("error starting build container. %s", err)
return err
}
// UPDATE STATUS
err = updater.SetJob(c, r)
if err != nil {
log.Errorf("error updating job status as running. %s", err)
return err
}
// WAIT FOR OUTPUT
info, builderr := docker.Wait(client, name)
switch {
case info.State.ExitCode == 128:
r.Job.ExitCode = info.State.ExitCode
r.Job.Status = model.StatusKilled
case info.State.ExitCode == 130:
r.Job.ExitCode = info.State.ExitCode
r.Job.Status = model.StatusKilled
case builderr != nil:
r.Job.Status = model.StatusError
case info.State.ExitCode != 0:
r.Job.ExitCode = info.State.ExitCode
r.Job.Status = model.StatusFailure
default:
r.Job.Status = model.StatusSuccess
}
// send the logs to the datastore
var buf bytes.Buffer
rc, err := client.ContainerLogs(name, docker.LogOpts)
if err != nil && builderr != nil {
buf.WriteString("Error launching build")
buf.WriteString(builderr.Error())
} else if err != nil {
buf.WriteString("Error launching build")
buf.WriteString(err.Error())
log.Errorf("error opening connection to logs. %s", err)
return err
} else {
defer rc.Close()
stdcopy.StdCopy(&buf, &buf, io.LimitReader(rc, 5000000))
}
// update the task in the datastore
r.Job.Finished = time.Now().UTC().Unix()
err = updater.SetJob(c, r)
if err != nil {
log.Errorf("error updating job after completion. %s", err)
return err
}
err = updater.SetLogs(c, r, ioutil.NopCloser(&buf))
if err != nil {
log.Errorf("error updating logs. %s", err)
return err
}
log.Debugf("completed job %d with status %s.", r.Job.ID, r.Job.Status)
return nil
}