public void init()

in hawtio-system/src/main/java/io/hawt/web/proxy/ProxyServlet.java [130:188]
49 lines of code
12 McCabe index (conditional complexity)

    public void init(ServletConfig servletConfig) throws ServletException {
        super.init(servletConfig);

        ConfigManager config = (ConfigManager) getServletContext().getAttribute(ConfigManager.CONFIG_MANAGER);

        enabled = !config.getBoolean(DISABLE_PROXY, false);
        if (!enabled) {
            LOG.info("Proxy servlet is disabled");
            // proxy servlet is disabled so won't run any further initialisation
            return;
        }

        String allowlistStr = config.get(PROXY_ALLOWLIST, servletConfig.getInitParameter(PROXY_ALLOWLIST));
        boolean probeLocal = config.getBoolean(LOCAL_ADDRESS_PROBING, true);
        allowlist = new ProxyAllowlist(allowlistStr, probeLocal);

        String doForwardIPString = servletConfig.getInitParameter(P_FORWARDEDFOR);
        if (doForwardIPString != null) {
            this.doForwardIP = Boolean.parseBoolean(doForwardIPString);
        }

        String doLogStr = servletConfig.getInitParameter(P_LOG);
        if (doLogStr != null) {
            this.doLog = Boolean.parseBoolean(doLogStr);
        }

        cookieStore = new BasicCookieStore();
        HttpClientBuilder httpClientBuilder = HttpClients.custom()
            .setDefaultCookieStore(cookieStore)
            .useSystemProperties();

        if (System.getProperty(PROXY_ACCEPT_SELF_SIGNED_CERTS) != null) {
            acceptSelfSignedCerts = Boolean.parseBoolean(System.getProperty(PROXY_ACCEPT_SELF_SIGNED_CERTS));
        } else if (System.getenv(PROXY_ACCEPT_SELF_SIGNED_CERTS_ENV) != null) {
            acceptSelfSignedCerts = Boolean.parseBoolean(System.getenv(PROXY_ACCEPT_SELF_SIGNED_CERTS_ENV));
        }

        if (acceptSelfSignedCerts) {
            try {
                SSLContextBuilder builder = new SSLContextBuilder();
                builder.loadTrustMaterial(null, (X509Certificate[] x509Certificates, String s) -> true);
                SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(
                    SSLUtil.createSSLContext(), SSLConnectionSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER);
                httpClientBuilder.setSSLSocketFactory(sslsf);
            } catch (NoSuchAlgorithmException e) {
                throw new ServletException(e);
            } catch (KeyStoreException e) {
                throw new ServletException(e);
            } catch (KeyManagementException e) {
                throw new ServletException(e);
            } catch (GeneralSecurityException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }

        proxyClient = httpClientBuilder.build();
    }