public void onGitReferenceUpdated()

in java/com/googlesource/gerrit/plugins/supermanifest/SuperManifestRefUpdatedListener.java [289:330]
31 lines of code
7 McCabe index (conditional complexity)

  public void onGitReferenceUpdated(Event event) {
    if (event.getProjectName().equals(allProjectsName.get())) {
      if (event.getRefName().equals("refs/meta/config")) {
        try {
          // TODO: Remove, this is just band-aid.
          // Evict project cache because this is called before that eviction is done in core
          projectCache.evict(allProjectsName);
          updateConfiguration();
        } catch (NoSuchProjectException e) {
          throw new IllegalStateException(e);
        }
      }
      return;
    }
    if(RefNames.isNoteDbMetaRef(event.getRefName())) {
      // NoteDb meta ref updates never cause supermanifest updates.
      return;
    }

    List<ConfigEntry> relevantConfigs =
        findRelevantConfigs(event.getProjectName(), event.getRefName());
    for (ConfigEntry relevantConfig : relevantConfigs) {
      try {
        updateForConfig(relevantConfig, event.getRefName());
      } catch (ConfigInvalidException | IOException | GitAPIException e) {
        // We only want the trace up to here. We could recurse into the exception, but this at least
        // trims the very common jgit.gitrepo.RepoCommand.RemoteUnavailableException.
        StackTraceElement here = Thread.currentThread().getStackTrace()[1];
        e.setStackTrace(trimStack(e.getStackTrace(), here));

        // We are in an asynchronously called listener, so there is no user action to give
        // feedback to. We log the error, but it would be nice if we could surface these logs
        // somewhere.  Perhaps we could store these as commits in some special branch (but in
        // what repo?).
        StringWriter sw = new StringWriter();
        PrintWriter pw = new PrintWriter(sw);
        e.printStackTrace(pw);
        error(
            "update for %s (ref %s) failed: %s", relevantConfig.toString(), event.getRefName(), sw);
      }
    }
  }