public HookResult runHook()

in src/main/java/com/googlesource/gerrit/plugins/hooks/HookTask.java [85:139]
47 lines of code
8 McCabe index (conditional complexity)

  public HookResult runHook() {
    HookResult result = null;
    String name = getName();
    try (Timer1.Context<String> timer = args.metrics.start(name)) {
      args.metrics.count(name);
      List<String> argv = new ArrayList<>(1 + args.get().size());
      argv.add(hook.toAbsolutePath().toString());
      argv.addAll(args.get());

      ProcessBuilder pb = new ProcessBuilder(argv);
      pb.redirectErrorStream(true);

      Map<String, String> env = pb.environment();
      env.put("GERRIT_SITE", sitePath.toAbsolutePath().toString());

      if (projectName != null) {
        try (Repository git = args.gitManager.openRepository(Project.nameKey(projectName))) {
          pb.directory(git.getDirectory());
          env.put("GIT_DIR", git.getDirectory().getAbsolutePath());
        }
      }

      ps = pb.start();
      ps.getOutputStream().close();
      String out = new String(ByteStreams.toByteArray(ps.getInputStream()), UTF_8);
      ps.waitFor();
      result = new HookResult(ps.exitValue(), out);
    } catch (InterruptedException iex) {
      // InterruptedException - timeout or cancel
      args.metrics.timeout(name);
      logger.atSevere().log("hook[%s] timed out: %s", name, iex.getMessage());
    } catch (Throwable err) {
      args.metrics.error(name);
      logger.atSevere().withCause(err).log("Error running hook %s", hook.toAbsolutePath());
    }

    if (result != null) {
      int exitValue = result.getExitValue();
      if (exitValue != 0) {
        logger.atSevere().log("hook[%s] exited with error status: %d", name, exitValue);
      }

      if (logger.atFine().isEnabled()) {
        try (BufferedReader br = new BufferedReader(new StringReader(result.getOutput()))) {
          br.lines()
              .filter(s -> !s.isEmpty())
              .forEach(line -> logger.atFine().log("hook[%s] output: %s", name, line));
        } catch (IOException iox) {
          logger.atSevere().withCause(iox).log("Error writing hook [%s] output", name);
        }
      }
    }

    return result;
  }