public void init()

in hawtio-system/src/main/java/io/hawt/web/auth/keycloak/KeycloakServlet.java [42:81]
31 lines of code
8 McCabe index (conditional complexity)

    public void init() {
        ConfigManager config = (ConfigManager) getServletContext().getAttribute(ConfigManager.CONFIG_MANAGER);

        authConfiguration = AuthenticationConfiguration.getConfiguration(getServletContext());
        keycloakEnabled = authConfiguration.isKeycloakEnabled();
        LOG.info("Keycloak integration is {}", this.keycloakEnabled ? "enabled" : "disabled");
        if (!keycloakEnabled) {
            return;
        }

        String keycloakConfigFile = config.get(KEYCLOAK_CLIENT_CONFIG, null);

        // JVM system properties can override always
        if (System.getProperty(HAWTIO_KEYCLOAK_CLIENT_CONFIG) != null) {
            keycloakConfigFile = System.getProperty(HAWTIO_KEYCLOAK_CLIENT_CONFIG);
        }

        if (keycloakConfigFile == null || keycloakConfigFile.length() == 0) {
            keycloakConfigFile = defaultKeycloakConfigLocation();
        }

        LOG.info("Will load keycloak config from location: {}", keycloakConfigFile);

        InputStream is = ServletHelpers.loadFile(keycloakConfigFile);
        if (is == null) {
            LOG.warn("Keycloak client configuration not found!");
        } else {
            try {
                BufferedReader reader = new BufferedReader(new InputStreamReader(is));
                String keycloakConfig = IOHelper.readFully(reader);

                // Minify for perf purposes
                this.keycloakConfig = keycloakConfig.replaceAll(" ", "").replaceAll(System.lineSeparator(), "");
            } catch (IOException ioe) {
                LOG.warn("Couldn't read keycloak configuration file", ioe);
            } finally {
                IOHelper.close(is, "keycloakInputStream", LOG);
            }
        }
    }