// createMainUnit
func createMainUnit(t *jobs.Task, sidekickUnitNames []string, engine engine.Engine, ctx generatorContext) (*sdunits.Unit, error) {
unit, err := createDefaultUnit(t,
unitName(t, unitKindMain, ctx.ScalingGroup),
unitDescription(t, "Main", ctx.ScalingGroup),
"service", unitKindMain, ctx)
if err != nil {
return nil, maskAny(err)
}
cmds, err := engine.CreateMainCmds(t, unit.ExecOptions.Environment, ctx.ScalingGroup)
if err != nil {
return nil, maskAny(err)
}
setupUnitFromCmds(unit, cmds)
switch t.Type {
case "oneshot":
unit.ExecOptions.IsOneshot = true
unit.ExecOptions.Restart = "on-failure"
case "proxy":
unit.ExecOptions.Restart = "always"
default:
unit.ExecOptions.Restart = "always"
}
// Additional service dependencies
unit.ExecOptions.Require(sidekickUnitNames...)
unit.ExecOptions.After(sidekickUnitNames...)
for _, name := range t.VolumesFrom {
other, err := t.Task(name)
if err != nil {
return nil, maskAny(err)
}
otherName := unitName(other, unitKindMain, ctx.ScalingGroup) + ".service"
unit.ExecOptions.Require(otherName)
unit.ExecOptions.After(otherName)
}
// Add metrics registration commands
if err := addMetricsRegistration(t, unit, ctx); err != nil {
return nil, maskAny(err)
}
// Add frontend registration commands
if err := addFrontEndRegistration(t, unit, ctx); err != nil {
return nil, maskAny(err)
}
return unit, nil
}
// createMainDockerCmdLine creates the `ExecStart` line for
// the main unit.
func (e *dockerEngine) createMainDockerCmdLine(t *jobs.Task, image string, env map[string]string, scalingGroup uint) (cmdline.Cmdline, error) {
serviceName := t.ServiceName()
cmd, err := e.createDockerCmd(env, t.Network)
if err != nil {
return cmd, maskAny(err)
}
cmd.Add(nil, "run", "--rm", fmt.Sprintf("--name %s", t.ContainerName(scalingGroup)))
if err := e.addDockerNetworkArgs(&cmd, env, t); err != nil {
return cmd, maskAny(err)
}
if len(t.Ports) > 0 {
for _, p := range t.Ports {
cmd.Add(env, fmt.Sprintf("-p %s", p))
}
} else {
cmd.Add(env, "-P")
}
for i, v := range t.Volumes {
if v.IsLocal() {
cmd.Add(env, fmt.Sprintf("-v %s", v))
} else if !v.IsLocal() {
cmd.Add(env, fmt.Sprintf("--volumes-from %s", createVolumeUnitContainerName(t, i, scalingGroup)))
}
}
for _, secret := range t.Secrets {
if ok, path := secret.TargetFile(); ok {
hostPath, err := secretFilePath(t, scalingGroup, secret)
if err != nil {
return cmdline.Cmdline{}, maskAny(err)
}
cmd.Add(env, fmt.Sprintf("-v %s:%s:ro", hostPath, path))
}
}
for _, name := range t.VolumesFrom {
other, err := t.Task(name)
if err != nil {
return cmdline.Cmdline{}, maskAny(err)
}
for i, v := range other.Volumes {
if !v.IsLocal() {
cmd.Add(env, fmt.Sprintf("--volumes-from %s", createVolumeUnitContainerName(other, i, scalingGroup)))
}
}
cmd.Add(env, fmt.Sprintf("--volumes-from %s", other.ContainerName(scalingGroup)))
}
envKeys := []string{}
for k := range t.Environment {
envKeys = append(envKeys, k)
}
sort.Strings(envKeys)
if e.options.EnvFile != "" {
cmd.Add(env, fmt.Sprintf("--env-file=%s", e.options.EnvFile))
}
for _, k := range envKeys {
cmd.Add(env, "-e "+strconv.Quote(fmt.Sprintf("%s=%s", k, t.Environment[k])))
}
if t.Secrets.AnyTargetEnviroment() {
cmd.Add(env, "--env-file="+secretEnvironmentPath(t, scalingGroup))
}
cmd.Add(env, fmt.Sprintf("-e SERVICE_NAME=%s", serviceName)) // Support registrator
for _, cap := range t.Capabilities {
cmd.Add(env, "--cap-add "+cap)
}
tcpLinkIndex := 0
for _, l := range t.Links {
targetName := l.Target.PrivateDomainName()
if l.Type.IsHTTP() {
cmd.Add(env, "--add-host")
cmd.Add(env, fmt.Sprintf("%s:${COREOS_PRIVATE_IPV4}", targetName))
} else {
linkContainerName := fmt.Sprintf("%s-pr%d", t.ContainerName(scalingGroup), tcpLinkIndex)
cmd.Add(env, fmt.Sprintf("--link %s:%s", linkContainerName, targetName))
tcpLinkIndex++
}
}
for _, arg := range t.LogDriver.CreateDockerLogArgs(e.options) {
cmd.Add(env, arg)
}
for _, arg := range t.DockerArgs {
cmd.Add(env, arg)
}
if t.User != "" {
cmd.Add(env, fmt.Sprintf("--user %s", t.User))
}
cmd.Add(nil, image)
if t.Type == "proxy" {
cmd.Add(nil, "sleep 36500d")
}
for _, arg := range t.Args {
cmd.Add(env, arg)
}
return cmd, nil
}
