Function buildkitVersion

tests/integration.go:189–234

(t *testing.T, sb integration.Sandbox)

)

func buildkitVersion(t *testing.T, sb integration.Sandbox) string {
	bkversMu.Lock()
	defer bkversMu.Unlock()

	if bkvers == nil {
		bkvers = make(map[string]string)
	}

	ver, ok := bkvers[sb.Name()]
	if !ok {
		out, err := inspectCmd(sb, withArgs(sb.Address()))
		require.NoError(t, err, out)
		for line := range strings.SplitSeq(out, "\n") {
			if v, ok := strings.CutPrefix(line, "BuildKit version:"); ok {
				ver = strings.TrimSpace(v)
				bkvers[sb.Name()] = ver
			}
		}
		if ver == "" {
			t.Logf("BuildKit version not found in inspect output, extract it from the image.\n%s", out)
			undockBin, err := exec.LookPath("undock")
			require.NoError(t, err, "undock not found")

			destDir := t.TempDir()
			t.Cleanup(func() {
				os.RemoveAll(destDir)
			})

			cmd := exec.CommandContext(context.TODO(), undockBin, "--cachedir", "/root/.cache/undock", "--include", "/usr/bin/buildkitd", "--rm-dist", buildkitImage, destDir)
			require.NoErrorf(t, cmd.Run(), "failed to extract buildkitd binary from %q", buildkitImage)

			cmd = exec.CommandContext(context.TODO(), filepath.Join(destDir, "usr", "bin", "buildkitd"), "--version")
			out, err := cmd.CombinedOutput()
			require.NoErrorf(t, err, "failed to get BuildKit version from %q: %s", buildkitImage, string(out))

			v := strings.Fields(strings.TrimSpace(string(out)))
			if len(v) != 4 {
				require.Fail(t, "unexpected version format: "+strings.TrimSpace(string(out)))
			}
			ver = v[2]
			bkvers[sb.Name()] = ver
		}
	}

	return ver
}

func matchesBuildKitVersion(t *testing.T, sb integration.Sandbox, constraint string) bool {
	c, err := semver.NewConstraint(constraint)