protected GitHubOAuthConfig()

in github-oauth/src/main/java/com/googlesource/gerrit/plugins/github/oauth/GitHubOAuthConfig.java [75:127]
47 lines of code
1 McCabe index (conditional complexity)

  protected GitHubOAuthConfig(
      @GerritServerConfig Config config, CanonicalWebUrl canonicalWebUrl, AuthConfig authConfig) {
    this.config = config;
    this.canonicalWebUrl = canonicalWebUrl;

    httpHeader =
        Preconditions.checkNotNull(
            config.getString("auth", null, "httpHeader"),
            "HTTP Header for GitHub user must be provided");
    gitHubUrl =
        trimTrailingSlash(
            MoreObjects.firstNonNull(
                config.getString(CONF_SECTION, null, "url"), GITHUB_URL_DEFAULT));
    gitHubApiUrl =
        trimTrailingSlash(
            MoreObjects.firstNonNull(
                config.getString(CONF_SECTION, null, "apiUrl"), GITHUB_API_URL_DEFAULT));
    gitHubClientId =
        Preconditions.checkNotNull(
            config.getString(CONF_SECTION, null, "clientId"), "GitHub `clientId` must be provided");
    gitHubClientSecret =
        Preconditions.checkNotNull(
            config.getString(CONF_SECTION, null, "clientSecret"),
            "GitHub `clientSecret` must be provided");

    oauthHttpHeader = config.getString("auth", null, "httpExternalIdHeader");
    gitHubOAuthUrl = gitHubUrl + GITHUB_OAUTH_AUTHORIZE;
    gitHubOAuthAccessTokenUrl = gitHubUrl + GITHUB_OAUTH_ACCESS_TOKEN;
    logoutRedirectUrl = config.getString(CONF_SECTION, null, "logoutRedirectUrl");

    enabled = config.getString("auth", null, "type").equalsIgnoreCase(AuthType.HTTP.toString());
    scopes = getScopes(config);
    sortedScopesKeys =
        scopes.keySet().stream()
            .sorted(Comparator.comparing(ScopeKey::getSequence))
            .collect(Collectors.toList());

    fileUpdateMaxRetryCount = config.getInt(CONF_SECTION, "fileUpdateMaxRetryCount", 3);
    fileUpdateMaxRetryIntervalMsec =
        config.getInt(CONF_SECTION, "fileUpdateMaxRetryIntervalMsec", 3000);

    httpConnectionTimeout =
        TimeUnit.MILLISECONDS.convert(
            ConfigUtil.getTimeUnit(
                config, CONF_SECTION, null, "httpConnectionTimeout", 30, TimeUnit.SECONDS),
            TimeUnit.SECONDS);

    httpReadTimeout =
        TimeUnit.MILLISECONDS.convert(
            ConfigUtil.getTimeUnit(
                config, CONF_SECTION, null, "httpReadTimeout", 30, TimeUnit.SECONDS),
            TimeUnit.SECONDS);
  }