private JsonObject retrieveJWTToken()

in src/main/java/com/googlesource/gerrit/plugins/oauth/GoogleOAuthService.java [157:181]

• 25 lines of code
• 8 McCabe index (conditional complexity)

  private JsonObject retrieveJWTToken(OAuthToken token) throws IOException {
    JsonElement idToken = JSON.newGson().fromJson(token.getRaw(), JsonElement.class);
    if (idToken != null && idToken.isJsonObject()) {
      JsonObject idTokenObj = idToken.getAsJsonObject();
      JsonElement idTokenElement = idTokenObj.get("id_token");
      if (idTokenElement != null && !idTokenElement.isJsonNull()) {
        String payload;
        try {
          payload = decodePayload(idTokenElement.getAsString());
        } catch (UnsupportedEncodingException e) {
          throw new IOException(
              String.format(
                  "%s support is required to interact with JWTs", StandardCharsets.UTF_8.name()),
              e);
        }
        if (!Strings.isNullOrEmpty(payload)) {
          JsonElement tokenJsonElement = JSON.newGson().fromJson(payload, JsonElement.class);
          if (tokenJsonElement.isJsonObject()) {
            return tokenJsonElement.getAsJsonObject();
          }
        }
      }
    }
    return null;
  }