19166: Support `crunch-run -version`.

Arvados-DCO-1.1-Signed-off-by: Tom Clegg <tom@curii.com>

diff --git a/lib/crunchrun/crunchrun.go b/lib/crunchrun/crunchrun.go
index ff02257f2b36739ccd241f4d49e7c4aa4acb2c1c..0bf19083a2b20bf4ad2bfdc2d394cca845ddd313 100644 (file)
--- a/lib/crunchrun/crunchrun.go
+++ b/lib/crunchrun/crunchrun.go
@@ -1743,6 +1743,7 @@ func (command) RunCommand(prog string, args []string, stdin io.Reader, stdout, s
        runtimeEngine := flags.String("runtime-engine", "docker", "container runtime: docker or singularity")
        brokenNodeHook := flags.String("broken-node-hook", "", "script to run if node is detected to be broken (for example, Docker daemon is not running)")
        flags.Duration("check-containerd", 0, "Ignored. Exists for compatibility with older versions.")
+       version := flags.Bool("version", false, "Write version information to stdout and exit 0.")
 
        ignoreDetachFlag := false
        if len(args) > 0 && args[0] == "-no-detach" {
@@ -1758,6 +1759,9 @@ func (command) RunCommand(prog string, args []string, stdin io.Reader, stdout, s
 
        if ok, code := cmd.ParseFlags(flags, prog, args, "container-uuid", stderr); !ok {
                return code
+       } else if *version {
+               fmt.Fprintln(stdout, prog, cmd.Version.String())
+               return 0
        } else if !*list && flags.NArg() != 1 {
                fmt.Fprintf(stderr, "missing required argument: container-uuid (try -help)\n")
                return 2