X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/81dd4a91b279b3229fb359df6c5dbf07571083ac..4a919918a4ce37b5290793f02fa959db1c073590:/services/crunch-run/crunchrun.go

diff --git a/services/crunch-run/crunchrun.go b/services/crunch-run/crunchrun.go
index 7d933632c9..3261291b53 100644
--- a/services/crunch-run/crunchrun.go
+++ b/services/crunch-run/crunchrun.go
@@ -222,7 +222,14 @@ var brokenNodeHook *string = flag.String("broken-node-hook", "", "Script to run
 
 func (runner *ContainerRunner) runBrokenNodeHook() {
 	if *brokenNodeHook == "" {
-		runner.CrunchLog.Printf("No broken node hook provided, cannot mark node as broken.")
+		path := filepath.Join(lockdir, brokenfile)
+		runner.CrunchLog.Printf("Writing %s to mark node as broken", path)
+		f, err := os.OpenFile(path, os.O_CREATE|os.O_RDWR, 0700)
+		if err != nil {
+			runner.CrunchLog.Printf("Error writing %s: %s", path, err)
+			return
+		}
+		f.Close()
 	} else {
 		runner.CrunchLog.Printf("Running broken node hook %q", *brokenNodeHook)
 		// run killme script
@@ -980,7 +987,7 @@ func (runner *ContainerRunner) AttachStreams() (err error) {
 		go func() {
 			_, err := io.Copy(response.Conn, stdinRdr)
 			if err != nil {
-				runner.CrunchLog.Print("While writing stdin collection to docker container %q", err)
+				runner.CrunchLog.Printf("While writing stdin collection to docker container: %v", err)
 				runner.stop(nil)
 			}
 			stdinRdr.Close()
@@ -990,7 +997,7 @@ func (runner *ContainerRunner) AttachStreams() (err error) {
 		go func() {
 			_, err := io.Copy(response.Conn, bytes.NewReader(stdinJson))
 			if err != nil {
-				runner.CrunchLog.Print("While writing stdin json to docker container %q", err)
+				runner.CrunchLog.Printf("While writing stdin json to docker container: %v", err)
 				runner.stop(nil)
 			}
 			response.CloseWrite()
@@ -1736,6 +1743,11 @@ func main() {
 	cgroupParent := flag.String("cgroup-parent", "docker", "name of container's parent cgroup (ignored if -cgroup-parent-subsystem is used)")
 	cgroupParentSubsystem := flag.String("cgroup-parent-subsystem", "", "use current cgroup for given subsystem as parent cgroup for container")
 	caCertsPath := flag.String("ca-certs", "", "Path to TLS root certificates")
+	detach := flag.Bool("detach", false, "Detach from parent process and run in the background")
+	stdinEnv := flag.Bool("stdin-env", false, "Load environment variables from JSON message on stdin")
+	sleep := flag.Duration("sleep", 0, "Delay before starting (testing use only)")
+	kill := flag.Int("kill", -1, "Send signal to an existing crunch-run process for given UUID")
+	list := flag.Bool("list", false, "List UUIDs of existing crunch-run processes")
 	enableNetwork := flag.String("container-enable-networking", "default",
 		`Specify if networking should be enabled for container.  One of 'default', 'always':
     	default: only enable networking if container requests it.
@@ -1747,8 +1759,37 @@ func main() {
 	memprofile := flag.String("memprofile", "", "write memory profile to `file` after running container")
 	getVersion := flag.Bool("version", false, "Print version information and exit.")
 	flag.Duration("check-containerd", 0, "Ignored. Exists for compatibility with older versions.")
+
+	ignoreDetachFlag := false
+	if len(os.Args) > 1 && os.Args[1] == "-no-detach" {
+		// This process was invoked by a parent process, which
+		// has passed along its own arguments, including
+		// -detach, after the leading -no-detach flag.  Strip
+		// the leading -no-detach flag (it's not recognized by
+		// flag.Parse()) and ignore the -detach flag that
+		// comes later.
+		os.Args = append([]string{os.Args[0]}, os.Args[2:]...)
+		ignoreDetachFlag = true
+	}
+
 	flag.Parse()
 
+	if *stdinEnv && !ignoreDetachFlag {
+		// Load env vars on stdin if asked (but not in a
+		// detached child process, in which case stdin is
+		// /dev/null).
+		loadEnv(os.Stdin)
+	}
+
+	switch {
+	case *detach && !ignoreDetachFlag:
+		os.Exit(Detach(flag.Arg(0), os.Args, os.Stdout, os.Stderr))
+	case *kill >= 0:
+		os.Exit(KillProcess(flag.Arg(0), syscall.Signal(*kill), os.Stdout, os.Stderr))
+	case *list:
+		os.Exit(ListProcesses(os.Stdout, os.Stderr))
+	}
+
 	// Print version information if requested
 	if *getVersion {
 		fmt.Printf("crunch-run %s\n", version)
@@ -1756,6 +1797,7 @@ func main() {
 	}
 
 	log.Printf("crunch-run %s started", version)
+	time.Sleep(*sleep)
 
 	containerId := flag.Arg(0)
 
@@ -1829,3 +1871,21 @@ func main() {
 		log.Fatalf("%s: %v", containerId, runerr)
 	}
 }
+
+func loadEnv(rdr io.Reader) {
+	buf, err := ioutil.ReadAll(rdr)
+	if err != nil {
+		log.Fatalf("read stdin: %s", err)
+	}
+	var env map[string]string
+	err = json.Unmarshal(buf, &env)
+	if err != nil {
+		log.Fatalf("decode stdin: %s", err)
+	}
+	for k, v := range env {
+		err = os.Setenv(k, v)
+		if err != nil {
+			log.Fatalf("setenv(%q): %s", k, err)
+		}
+	}
+}