func (j *BuildImageRequest) Execute(resp jobs.Response) {
w := resp.SuccessWithWrite(jobs.ResponseAccepted, true, false)
fmt.Fprintf(w, "Processing build-image request:\n")
// TODO: download source, add bind-mount
unitName := containers.JobIdentifier(j.Name).UnitNameForBuild()
unitDescription := fmt.Sprintf("Builder for %s", j.Tag)
stdout, err := systemd.ProcessLogsForUnit(unitName)
if err != nil {
stdout = utils.EmptyReader
log.Printf("job_build_image: Unable to fetch build logs: %s, %+v", err.Error(), err)
}
defer stdout.Close()
conn, errc := systemd.NewConnection()
if errc != nil {
log.Print("job_build_image:", errc)
fmt.Fprintf(w, "Unable to watch start status", errc)
return
}
if err := conn.Subscribe(); err != nil {
log.Print("job_build_image:", err)
fmt.Fprintf(w, "Unable to watch start status", errc)
return
}
defer conn.Unsubscribe()
// make subscription global for efficiency
var (
changes <-chan map[string]*dbus.UnitStatus
errch <-chan error
)
if resp.StreamResult() {
changes, errch = conn.SubscribeUnitsCustom(1*time.Second, 2,
func(s1 *dbus.UnitStatus, s2 *dbus.UnitStatus) bool {
return true
},
func(unit string) bool {
return unit != unitName
})
}
fmt.Fprintf(w, "Running sti build unit: %s\n", unitName)
log.Printf("build_image: Running build %s", unitName)
var startCmd []string
if _, err := os.Stat(gearBinaryPath); err != nil {
log.Println("gear executable is not installed on system; using sti builder image")
startCmd = []string{
"/usr/bin/docker", "run",
"-rm",
"-v", "/run/docker.sock:/run/docker.sock",
"-t", buildImage,
"sti", "build", j.Source, j.BaseImage, j.Tag,
"-U", "unix:///run/docker.sock",
}
} else {
startCmd = []string{
gearBinaryPath, "build", j.Source, j.BaseImage, j.Tag,
}
}
if j.RuntimeImage != "" {
startCmd = append(startCmd, "--runtime-image")
startCmd = append(startCmd, j.RuntimeImage)
}
if j.Clean {
startCmd = append(startCmd, "--clean")
}
if j.Verbose {
startCmd = append(startCmd, "--debug")
}
if j.CallbackUrl != "" {
startCmd = append(startCmd, "--callbackUrl="+j.CallbackUrl)
}
log.Printf("build_image: Will execute %v", startCmd)
status, err := systemd.Connection().StartTransientUnit(
unitName,
"fail",
dbus.PropExecStart(startCmd, true),
dbus.PropDescription(unitDescription),
dbus.PropRemainAfterExit(true),
dbus.PropSlice("container-small.slice"),
)
if err != nil {
errType := reflect.TypeOf(err)
fmt.Fprintf(w, "Unable to start build container for this image due to (%s): %s\n", errType, err.Error())
return
} else if status != "done" {
fmt.Fprintf(w, "Build did not complete successfully: %s\n", status)
} else {
fmt.Fprintf(w, "Sti build is running\n")
}
if resp.StreamResult() {
go io.Copy(w, stdout)
wait:
for {
select {
case c := <-changes:
if changed, ok := c[unitName]; ok {
if changed.SubState != "running" {
fmt.Fprintf(w, "Build completed\n")
break wait
}
}
case err := <-errch:
fmt.Fprintf(w, "Error %+v\n", err)
case <-time.After(25 * time.Second):
log.Print("job_build_image:", "timeout")
break wait
}
}
}
}
func (j *runContainer) Execute(resp jobs.Response) {
command := j.UnitCommand()
unitName := containers.JobIdentifier(j.Name).UnitNameFor()
unitDescription := fmt.Sprintf("Execute image '%s': %s %s", j.Image, j.Command, strings.Join(command, " "))
var (
stdout io.ReadCloser
changes <-chan map[string]*dbus.UnitStatus
errch <-chan error
)
if resp.StreamResult() {
r, err := systemd.ProcessLogsForUnit(unitName)
if err != nil {
r = utils.EmptyReader
log.Printf("run_container: Unable to fetch container run logs: %s, %+v", err.Error(), err)
}
defer r.Close()
conn, errc := systemd.NewConnection()
if errc != nil {
log.Print("run_container:", errc)
return
}
if err := conn.Subscribe(); err != nil {
log.Print("run_container:", err)
return
}
defer conn.Unsubscribe()
// make subscription global for efficiency
c, ech := conn.SubscribeUnitsCustom(1*time.Second, 2,
func(s1 *dbus.UnitStatus, s2 *dbus.UnitStatus) bool {
return true
},
func(unit string) bool {
return unit != unitName
})
stdout = r
changes = c
errch = ech
}
log.Printf("run_container: Running container %s", unitName)
status, err := systemd.Connection().StartTransientUnit(
unitName,
"fail",
dbus.PropExecStart(command, true),
dbus.PropDescription(unitDescription),
dbus.PropRemainAfterExit(true),
dbus.PropSlice("container.slice"),
)
switch {
case err != nil:
errType := reflect.TypeOf(err)
resp.Failure(jobs.SimpleError{jobs.ResponseError, fmt.Sprintf("Unable to start container execution due to (%s): %s", errType, err.Error())})
return
case status != "done":
resp.Failure(jobs.SimpleError{jobs.ResponseError, fmt.Sprintf("Start did not complete successfully: %s", status)})
return
case stdout == nil:
resp.Success(jobs.ResponseOk)
return
}
w := resp.SuccessWithWrite(jobs.ResponseAccepted, true, false)
go io.Copy(w, stdout)
wait:
for {
select {
case c := <-changes:
if changed, ok := c[unitName]; ok {
if changed.SubState != "running" {
break wait
}
}
case err := <-errch:
fmt.Fprintf(w, "Error %+v\n", err)
case <-time.After(1 * time.Minute):
log.Print("run_container:", "timeout")
break wait
}
}
stdout.Close()
}