+ tempdir, err := ioutil.TempDir("", "arvados-diagnostics")
+ if err != nil {
+ diag.errorf("error creating temp dir: %s", err)
+ return
+ }
+ defer os.RemoveAll(tempdir)
+
+ var imageSHA2 string
+ var dockerImageData []byte
+ if diag.dockerImage != "" || diag.priority < 1 {
+ // We won't be using the self-built docker image, so
+ // don't build it. But we will write the embedded
+ // "hello-world" image to our test collection to test
+ // upload/download, whether or not we're using it as a
+ // docker image.
+ dockerImageData = HelloWorldDockerImage
+
+ if diag.priority > 0 {
+ imageSHA2, err = getSHA2FromImageData(dockerImageData)
+ if err != nil {
+ diag.errorf("internal error/bug: %s", err)
+ return
+ }
+ }
+ } else if selfbin, err := os.Readlink("/proc/self/exe"); err != nil {
+ diag.errorf("readlink /proc/self/exe: %s", err)
+ return
+ } else if selfbindata, err := os.ReadFile(selfbin); err != nil {
+ diag.errorf("error reading %s: %s", selfbin, err)
+ return
+ } else {
+ selfbinSha := fmt.Sprintf("%x", sha256.Sum256(selfbindata))
+ tag := "arvados-client-diagnostics:" + selfbinSha[:9]
+ err := os.WriteFile(tempdir+"/arvados-client", selfbindata, 0777)
+ if err != nil {
+ diag.errorf("error writing %s: %s", tempdir+"/arvados-client", err)
+ return
+ }
+
+ dockerfile := "FROM " + diag.dockerImageFrom + "\n"
+ dockerfile += "RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install --yes --no-install-recommends libfuse2 ca-certificates && apt-get clean\n"
+ dockerfile += "COPY /arvados-client /arvados-client\n"
+ cmd := exec.Command("docker", "build", "--tag", tag, "-f", "-", tempdir)
+ cmd.Stdin = strings.NewReader(dockerfile)
+ cmd.Stdout = diag.stderr
+ cmd.Stderr = diag.stderr
+ err = cmd.Run()
+ if err != nil {
+ diag.errorf("error building docker image: %s", err)
+ return
+ }
+ checkversion, err := exec.Command("docker", "run", tag, "/arvados-client", "version").CombinedOutput()
+ if err != nil {
+ diag.errorf("docker image does not seem to work: %s", err)
+ return
+ }
+ diag.infof("arvados-client version: %s", checkversion)
+
+ buf, err := exec.Command("docker", "inspect", "--format={{.Id}}", tag).Output()
+ if err != nil {
+ diag.errorf("docker inspect --format={{.Id}} %s: %s", tag, err)
+ return
+ }
+ imageSHA2 = min64HexDigits.FindString(string(buf))
+ if len(imageSHA2) != 64 {
+ diag.errorf("docker inspect --format={{.Id}} output %q does not seem to contain sha256 digest", buf)
+ return
+ }
+
+ buf, err = exec.Command("docker", "save", tag).Output()
+ if err != nil {
+ diag.errorf("docker save %s: %s", tag, err)
+ return
+ }
+ diag.infof("docker image size is %d", len(buf))
+ dockerImageData = buf
+ }
+
+ tarfilename := "sha256:" + imageSHA2 + ".tar"
+