public Response apply()

in src/main/java/com/googlesource/gerrit/plugins/lfs/PutLfsGlobalConfig.java [67:125]
56 lines of code
14 McCabe index (conditional complexity)

  public Response<LfsGlobalConfigInfo> apply(ProjectResource resource, LfsGlobalConfigInput input)
      throws RestApiException {
    adminView.validate(resource);
    Project.NameKey projectName = resource.getNameKey();

    if (input == null) {
      input = new LfsGlobalConfigInput();
    }

    LfsProjectsConfig config = lfsConfigFactory.getProjectsConfig();
    try (MetaDataUpdate md = metaDataUpdateFactory.get().create(projectName)) {
      try {
        config.load(md);
      } catch (ConfigInvalidException | IOException e) {
        throw new ResourceConflictException("Cannot read LFS config in " + projectName);
      }
      Config cfg = new Config();
      if (input.namespaces != null) {
        Set<String> backends = lfsConfigFactory.getGlobalConfig().getBackends().keySet();
        Set<Entry<String, LfsProjectConfigInfo>> namespaces = input.namespaces.entrySet();
        for (Map.Entry<String, LfsProjectConfigInfo> namespace : namespaces) {
          LfsProjectConfigInfo info = namespace.getValue();
          if (info.enabled != null) {
            cfg.setBoolean(pluginName, namespace.getKey(), KEY_ENABLED, info.enabled);
          }
          if (info.maxObjectSize != null) {
            cfg.setLong(pluginName, namespace.getKey(), KEY_MAX_OBJECT_SIZE, info.maxObjectSize);
          }
          if (info.readOnly != null) {
            cfg.setBoolean(pluginName, namespace.getKey(), KEY_READ_ONLY, info.readOnly);
          }
          if (!Strings.isNullOrEmpty(info.backend)) {
            if (!backends.contains(info.backend)) {
              throw new ResourceConflictException(
                  String.format(
                      "Namespace %s: backend %s does not exist", namespace, info.backend));
            }
            cfg.setString(pluginName, namespace.getKey(), KEY_BACKEND, info.backend);
          }
        }
      }
      config.setProjectConfig(cfg);
      try {
        config.commit(md);
      } catch (IOException e) {
        if (e.getCause() instanceof ConfigInvalidException) {
          throw new ResourceConflictException(
              "Cannot update LFS config in " + projectName + ": " + e.getCause().getMessage());
        }
        throw new ResourceConflictException("Cannot update LFS config in " + projectName);
      }
    } catch (RepositoryNotFoundException e) {
      throw new ResourceNotFoundException(projectName.get());
    } catch (IOException e) {
      throw new ResourceNotFoundException(projectName.get(), e);
    }

    return get.apply(resource);
  }